first calponin homology (CH) domain found in the alpha-actinin family; The alpha-actinin (ACTN) family includes alpha-actinin-1, -2, -3, and -4. They are F-actin cross-linking proteins which are thought to anchor actin to a variety of intracellular structures. ACTN1 mutations cause congenital macrothrombocytopenia. ACTN2 mutations are associated with cardiomyopathies, as well as skeletal muscle disorder. ACTN3 is critical in anchoring the myofibrillar actin filaments and plays a key role in muscle contraction. ACTN4 is associated with cell motility and cancer invasion. It is probably involved in vesicular trafficking via its association with the CART complex, which is necessary for efficient transferrin receptor recycling but not for epidermal growth factor receptor (EGFR) degradation. Members of this family contain two copies of the CH domain. This model corresponds to the first CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789   3 HMEKQQRKTFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLAKPERGKMRVHKISNVNKALDFIASKGVKL 82
Cdd:cd21214    1 AWEKQQRKTFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLPKPERGKMRFHKIANVNKALDFIASKGVKL 80

                         90       100
                 ....*....|....*....|....*
gi 114793789  83 VSIGAEEIVDGNVKMTLGMIWTIIL 107
Cdd:cd21214   81 VSIGAEEIVDGNLKMTLGMIWTIIL 105

first calponin homology (CH) domain found in the alpha-actinin family; The alpha-actinin (ACTN) family includes alpha-actinin-1, -2, -3, and -4. They are F-actin cross-linking proteins which are thought to anchor actin to a variety of intracellular structures. ACTN1 mutations cause congenital macrothrombocytopenia. ACTN2 mutations are associated with cardiomyopathies, as well as skeletal muscle disorder. ACTN3 is critical in anchoring the myofibrillar actin filaments and plays a key role in muscle contraction. ACTN4 is associated with cell motility and cancer invasion. It is probably involved in vesicular trafficking via its association with the CART complex, which is necessary for efficient transferrin receptor recycling but not for epidermal growth factor receptor (EGFR) degradation. Members of this family contain two copies of the CH domain. This model corresponds to the first CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789   3 HMEKQQRKTFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLAKPERGKMRVHKISNVNKALDFIASKGVKL 82
Cdd:cd21214    1 AWEKQQRKTFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLPKPERGKMRFHKIANVNKALDFIASKGVKL 80

                         90       100
                 ....*....|....*....|....*
gi 114793789  83 VSIGAEEIVDGNVKMTLGMIWTIIL 107
Cdd:cd21214   81 VSIGAEEIVDGNLKMTLGMIWTIIL 105

Calponin homology (CH) domain; The CH domain is found in both cytoskeletal proteins and signal transduction proteins. The CH domain is involved in actin binding in some members of the family. However in calponins there is evidence that the CH domain is not involved in its actin binding activity. Most member proteins have from two to four copies of the CH domain, however some proteins such as calponin have only a single copy.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789  120 SAKEGLLLWCQRKTAPYK-NVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKD--DPLTNLNTAFDVAEKYLDIPKM 196
Cdd:pfam00307   2 ELEKELLRWINSHLAEYGpGVRVTNFTTDLRDGLALCALLNKLAPGLVDKKKLNKSefDKLENINLALDVAEKKLGVPKV 81

                          90       100       110
                  ....*....|....*....|....*....|.
gi 114793789  197 L-DAEDIVgtaRPDEKAIMTYVSSFYHAFSG 226
Cdd:pfam00307  82 LiEPEDLV---EGDNKSVLTYLASLFRRFQA 109

Calponin homology domain; Actin binding domains present in duplicate at the N-termini of spectrin-like proteins (including dystrophin, alpha-actinin). These domains cross-link actin filaments into bundles and networks. A calponin homology domain is predicted in yeasst Cdc24p.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789   123 EGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKD----DPLTNLNTAFDVAEKYLDIPKMLD 198
Cdd:smart00033   1 KTLLRWVNSLLAEYDKPPVTNFSSDLKDGVALCALLNSLSPGLVDKKKVAASlsrfKKIENINLALSFAEKLGGKVVLFE 80

                           90       100
                   ....*....|....*....|..
gi 114793789   199 AEDIVgTARPDEKAIMTYVSSF 220
Cdd:smart00033  81 PEDLV-EGPKLILGVIWTLISL 101

Ca2+-binding actin-bundling protein fimbrin/plastin (EF-Hand superfamily) [Cytoskeleton];

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789  10 KTFTAWCNSHLrkAGTQIENIEEDFRDGLKLMLLLEVISGE-----RLAK--PERG--KMRVHKISNVNKALDFIASKGV 80
Cdd:COG5069  382 RVFTFWLNSLD--VSPEITNLFGDLRDQLILLQALSKKLMPmtvthKLVKkqPASGieENRFKAFENENYAVDLGITEGF 459

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789  81 KLVSIGAEEIVDGNvKMTLGMIWTiILRFAIQDISVEETSAKEGL----LLWC----------QRKTAPYKNVNIQNFHI 146
Cdd:COG5069  460 SLVGIKGLEILDGI-RLKLTLVWQ-VLRSNTALFNHVLKKDGCGLsdsdLCAWlgslglkgdkEEGIRSFGDPAGSVSGV 537

                        170       180       190
                 ....*....|....*....|....*....|....*....
gi 114793789 147 SWKDglgfcaLIHRHRPELIDYgklrkdDPLTNLNTAFD 185
Cdd:COG5069  538 FYLD------VLKGIHSELVDY------DLVTRGFTEFD 564

second calponin homology (CH) domain found in the alpha-actinin family; The alpha-actinin (ACTN) family includes alpha-actinin-1, -2, -3, and -4. They are F-actin cross-linking proteins which are thought to anchor actin to a variety of intracellular structures. ACTN1 mutations cause congenital macrothrombocytopenia. ACTN2 mutations are associated with cardiomyopathies, as well as skeletal muscle disorder. ACTN3 is critical in anchoring the myofibrillar actin filaments and plays a key role in muscle contraction. ACTN4 is associated with cell motility and cancer invasion. It is probably involved in vesicular trafficking via its association with the CART complex, which is necessary for efficient transferrin receptor recycling but not for epidermal growth factor receptor (EGFR) degradation. Members of this family contain two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 111 IQDISVEETSAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKY 190
Cdd:cd21216    1 IQDISVEELSAKEGLLLWCQRKTAPYKNVNVQNFHTSWKDGLAFCALIHRHRPDLLDYDKLRKDDPRENLNLAFDVAEKH 80

                         90       100       110
                 ....*....|....*....|....*....|....*
gi 114793789 191 LDIPKMLDAEDIVGTARPDEKAIMTYVSSFYHAFS 225
Cdd:cd21216   81 LDIPKMLDAEDIVNTPRPDERSVMTYVSCYYHAFA 115

second calponin homology (CH) domain found in alpha-actinin-3; Alpha-actinin-3 (ACTN3), also called alpha-actinin skeletal muscle isoform 3, is an F-actin cross-linking protein which is thought to anchor actin to a variety of intracellular structures. ACTN3 is a bundling protein. It is critical in anchoring the myofibrillar actin filaments and plays a key role in muscle contraction. It contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 111 IQDISVEETSAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKY 190
Cdd:cd21289    1 IQDISVEETSAKEGLLLWCQRKTAPYRNVNVQNFHTSWKDGLALCALIHRHRPDLIDYAKLRKDDPIGNLNTAFEVAEKY 80

                         90       100       110
                 ....*....|....*....|....*....|....*....
gi 114793789 191 LDIPKMLDAEDIVGTARPDEKAIMTYVSSFYHAFSGAQE 229
Cdd:cd21289   81 LDIPKMLDAEDIVNTPKPDEKAIMTYVSCFYHAFAGAEQ 119

second calponin homology (CH) domain found in alpha-actinin-2; Alpha-actinin-2 (ACTN2), also called alpha-actinin skeletal muscle isoform 2, is an F-actin cross-linking protein which is thought to anchor actin to a variety of intracellular structures. ACTN2 is a bundling protein. Its mutations are associated with cardiomyopathies, as well as skeletal muscle disorder. It contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 111 IQDISVEETSAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKY 190
Cdd:cd21288    1 IQDISVEETSAKEGLLLWCQRKTAPYRNVNIQNFHTSWKDGLGLCALIHRHRPDLIDYSKLNKDDPIGNINLAMEIAEKH 80

                         90       100       110
                 ....*....|....*....|....*....|....*....
gi 114793789 191 LDIPKMLDAEDIVGTARPDEKAIMTYVSSFYHAFSGAQE 229
Cdd:cd21288   81 LDIPKMLDAEDIVNTPKPDERAIMTYVSCFYHAFAGAEQ 119

second calponin homology (CH) domain found in the beta spectrin family; The beta spectrin family includes beta-I, -II, -III, -IV and -V spectrins. Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. Beta-I spectrin, also called spectrin beta chain, erythrocytic (SPTB), may be involved in anaemia pathogenesis. Beta-II spectrin, also called spectrin beta chain, non-erythrocytic 1 (SPTBN1), or fodrin beta chain, is a component of fodrin, which is the general spectrin-like protein that seems to be involved in secretion. Fodrin interacts with calmodulin in a calcium-dependent manner and is thus a candidate for the calcium-dependent movement of the cytoskeleton at the membrane. Beta-IV spectrin is also called spectrin, non-erythroid beta chain 3 (SPTBN3) or spectrin beta chain, non-erythrocytic 4 (SPTBN4). Its mutation associates with congenital myopathy, neuropathy, and central deafness. Beta-III spectrin is also called spectrin beta chain, non-erythrocytic 2 (SPTBN2), or spinocerebellar ataxia 5 protein (SCA5). Beta-V spectrin, also called spectrin beta chain, non-erythrocytic 5 (SPTBN5), is a mammalian ortholog of Drosophila beta H spectrin. Beta-III and Beta-V spectrins may play crucial roles as longer actin-membrane cross-linkers or fulfill the need for greater extensible flexibility than can be provided by the other smaller conventional spectrins. Members of this family contain two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 120 SAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDA 199
Cdd:cd21194    2 SAKDALLLWCQRKTAGYPGVNIQNFTTSWRDGLAFNALIHAHRPDLIDYNRLDPNDHLGNLNNAFDVAEQELGIAKLLDA 81

                         90       100
                 ....*....|....*....|....*
gi 114793789 200 EDiVGTARPDEKAIMTYVSSFYHAF 224
Cdd:cd21194   82 ED-VDVARPDEKSIMTYVASYYHYF 105

second calponin homology (CH) domain found in the beta-I spectrin-like subfamily; The beta-I spectrin-like family includes beta-I, -II, -III and -IV spectrins. Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. Beta-I spectrin, also called spectrin beta chain, erythrocytic (SPTB), may be involved in anaemia pathogenesis. Beta-II spectrin, also called spectrin beta chain, non-erythrocytic 1 (SPTBN1), or fodrin beta chain, is a component of fodrin, which is the general spectrin-like protein that seems to be involved in secretion. Fodrin interacts with calmodulin in a calcium-dependent manner and is thus a candidate for the calcium-dependent movement of the cytoskeleton at the membrane. Beta-III spectrin, also called spectrin beta chain, non-erythrocytic 2 (SPTBN2), or spinocerebellar ataxia 5 protein (SCA5), may play a crucial role as a longer actin-membrane cross-linker or fulfill the need for greater extensible flexibility than can be provided by the other smaller conventional spectrins. Beta-IV spectrin is also called spectrin, non-erythroid beta chain 3 (SPTBN3) or spectrin beta chain, non-erythrocytic 4 (SPTBN4). Its mutation associates with congenital myopathy, neuropathy, and central deafness. Members of this subfamily contain two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 120 SAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDA 199
Cdd:cd21248    2 SAKDALLLWCQMKTAGYPNVNVRNFTTSWRDGLAFNALIHKHRPDLIDYDKLSKSNALYNLQNAFNVAEQKLGLTKLLDP 81

                         90       100
                 ....*....|....*....|....*
gi 114793789 200 EDiVGTARPDEKAIMTYVSSFYHAF 224
Cdd:cd21248   82 ED-VNVEQPDEKSIITYVVTYYHYF 105

second calponin homology (CH) domain found in spectrin beta chain, erythrocytic (SPTB) and similar proteins; Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. SPTB, also called beta-I spectrin, may be involved in anaemia pathogenesis. SPTB contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 117 EETSAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKM 196
Cdd:cd21319    2 ETRSAKDALLLWCQMKTAGYPNVNVTNFTSSWKDGLAFNALIHKHRPDLVDFGKLKKSNARHNLEHAFNVAERQLGITKL 81

                         90       100
                 ....*....|....*....|....*....
gi 114793789 197 LDAEDIVgTARPDEKAIMTYVSSFYHAFS 225
Cdd:cd21319   82 LDPEDVF-TENPDEKSIITYVVAFYHYFS 109

first calponin homology (CH) domain found in the plectin/dystonin/MACF1 family; This family includes plectin, dystonin and microtubule-actin cross-linking factor 1, isoforms 1/2/3/5 (MACF1). Plectin, also called PCN, PLTN, hemidesmosomal protein 1 (HD1), or plectin-1, is a structural component of muscle. It interlinks intermediate filaments with microtubules and microfilaments, and anchors intermediate filaments to desmosomes or hemidesmosomes. It could also bind muscle proteins such as actin to membrane complexes in muscle. Dystonin, also called 230 kDa bullous pemphigoid antigen, 230/240 kDa bullous pemphigoid antigen, bullous pemphigoid antigen 1 (BPA or BPAG1), dystonia musculorum protein, or hemidesmosomal plaque protein, is a cytoskeletal linker protein that acts as an integrator of intermediate filaments, actin, and microtubule cytoskeleton networks. It is required for anchoring either intermediate filaments to the actin cytoskeleton in neural and muscle cells, or keratin-containing intermediate filaments to hemidesmosomes in epithelial cells. MACF1, also called 620 kDa actin-binding protein (ABP620), actin cross-linking family protein 7 (ACF7), macrophin-1, or trabeculin-alpha, is a large protein containing numerous spectrin and leucine-rich repeat (LRR) domains. It facilitates actin-microtubule interactions at the cell periphery and couples the microtubule network to cellular junctions. Members of this family contain two copies of the CH domain. This model corresponds to the first CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789   8 QRKTFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLAKpERGKMRVHKISNVNKALDFIASKGVKLVSIGA 87
Cdd:cd21188    4 QKKTFTKWVNKHLIKARRRVVDLFEDLRDGHNLISLLEVLSGESLPR-ERGRMRFHRLQNVQTALDFLKYRKIKLVNIRA 82

                         90       100
                 ....*....|....*....|..
gi 114793789  88 EEIVDGNVKMTLGMIWTIILRF 109
Cdd:cd21188   83 EDIVDGNPKLTLGLIWTIILHF 104

first calponin homology (CH) domain found in the beta-I spectrin-like subfamily; The beta-I spectrin-like family includes beta-I, -II, -III and -IV spectrins. Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. Beta-I spectrin, also called spectrin beta chain, erythrocytic (SPTB), may be involved in anaemia pathogenesis. Beta-II spectrin, also called spectrin beta chain, non-erythrocytic 1 (SPTBN1), or fodrin beta chain, is a component of fodrin, which is the general spectrin-like protein that seems to be involved in secretion. Fodrin interacts with calmodulin in a calcium-dependent manner and is thus a candidate for the calcium-dependent movement of the cytoskeleton at the membrane. Beta-III spectrin, also called spectrin beta chain, non-erythrocytic 2 (SPTBN2), or spinocerebellar ataxia 5 protein (SCA5), may play a crucial role as a longer actin-membrane cross-linker or fulfill the need for greater extensible flexibility than can be provided by the other smaller conventional spectrins. Beta-IV spectrin is also called spectrin, non-erythroid beta chain 3 (SPTBN3) or spectrin beta chain, non-erythrocytic 4 (SPTBN4). Its mutation associates with congenital myopathy, neuropathy, and central deafness. Members of this subfamily contain two copies of the CH domain. This model corresponds to the first CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789   1 AGHMEKQQRKTFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLAKPERGKMRVHKISNVNKALDFIASKGV 80
Cdd:cd21246   10 ADEREAVQKKTFTKWVNSHLARVGCRINDLYTDLRDGRMLIKLLEVLSGERLPKPTKGKMRIHCLENVDKALQFLKEQRV 89

                         90       100
                 ....*....|....*....|....*...
gi 114793789  81 KLVSIGAEEIVDGNVKMTLGMIWTIILR 108
Cdd:cd21246   90 HLENMGSHDIVDGNHRLTLGLIWTIILR 117

second calponin homology (CH) domain found in spectrin beta chain, non-erythrocytic 2 (SPTBN2) and similar proteins; Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. SPTBN2, also called beta-III spectrin, or spinocerebellar ataxia 5 protein (SCA5), probably plays an important role in the neuronal membrane skeleton. Mutations in SPTBN2 is associated with spinocerebellar ataxia type 5. SPTBN2 contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 117 EETSAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKM 196
Cdd:cd21321    2 EKKSAKDALLLWCQMKTAGYPNVNVHNFTTSWRDGLAFNAIVHKHRPDLIDFETLKKSNAHYNLQNAFNVAEKELGLTKL 81

                         90       100
                 ....*....|....*....|....*....
gi 114793789 197 LDAEDiVGTARPDEKAIMTYVSSFYHAFS 225
Cdd:cd21321   82 LDPED-VNVDQPDEKSIITYVATYYHYFS 109

second calponin homology (CH) domain found in spectrin beta chain, non-erythrocytic 4 (SPTBN4) and similar proteins; Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. SPTBN4, also called beta-IV spectrin, or spectrin, non-erythroid beta chain 3 (SPTBN3), is a novel spectrin isolated as an interactor of the receptor tyrosine phosphatase-like protein ICA512. Its mutation associates with congenital myopathy, neuropathy, and central deafness. SPTBN4 contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 106 ILRFAIQDiSVEETSAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFD 185
Cdd:cd21322    4 VIKIETED-NRETRSAKDALLLWCQMKTAGYPEVNIQNFTTSWRDGLAFNALIHRHRPDLIDFSKLTKSNATYNLQQAFN 82

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|
gi 114793789 186 VAEKYLDIPKMLDAEDiVGTARPDEKAIMTYVSSFYHAFS 225
Cdd:cd21322   83 TAEQHLGLTKLLDPED-VNMEAPDEKSIITYVVSFYHYFS 121

first calponin homology (CH) domain found in spectrin beta chain, non-erythrocytic 4 (SPTBN4) and similar proteins; Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. SPTBN4, also called beta-IV spectrin, or spectrin, non-erythroid beta chain 3 (SPTBN3), is a novel spectrin isolated as an interactor of the receptor tyrosine phosphatase-like protein ICA512. Its mutation associates with congenital myopathy, neuropathy, and central deafness. SPTBN4 contains two copies of the CH domain. This model corresponds to the first CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789   1 AGHMEKQQRKTFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLAKPERGKMRVHKISNVNKALDFIASKGV 80
Cdd:cd21318   32 ADEREAVQKKTFTKWVNSHLARVPCRINDLYTDLRDGYVLTRLLEVLSGEQLPKPTRGRMRIHSLENVDKALQFLKEQRV 111

                         90       100
                 ....*....|....*....|....*...
gi 114793789  81 KLVSIGAEEIVDGNVKMTLGMIWTIILR 108
Cdd:cd21318  112 HLENVGSHDIVDGNHRLTLGLIWTIILR 139

second calponin homology (CH) domain found in spectrin beta chain, non-erythrocytic 1 (SPTBN1) and similar proteins; Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. SPTBN1, also called beta-II spectrin, fodrin beta chain, or spectrin, non-erythroid beta chain 1, is also a component of fodrin, which is the general spectrin-like protein that seems to be involved in secretion. Fodrin interacts with calmodulin in a calcium-dependent manner and is thus a candidate for the calcium-dependent movement of the cytoskeleton at the membrane. SPTBN1 contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 120 SAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDA 199
Cdd:cd21320    2 SAKDALLLWCQMKTAGYPNVNIHNFTTSWRDGMAFNALIHKHRPDLIDFDKLKKSNAHYNLQNAFNLAEQHLGLTKLLDP 81

                         90       100
                 ....*....|....*....|....*.
gi 114793789 200 EDiVGTARPDEKAIMTYVSSFYHAFS 225
Cdd:cd21320   82 ED-ISVDHPDEKSIITYVVTYYHYFS 106

first calponin homology (CH) domain found in synaptic nuclear envelope protein 1 and similar proteins; Synaptic nuclear envelope protein 1 (SYNE-1), also called nesprin-1, enaptin, KASH domain-containing protein 1 (KASH1), myocyte nuclear envelope protein 1 (MYNE-1), or nuclear envelope spectrin repeat protein 1, is a multi-isomeric modular protein which forms a linking network between organelles and the actin cytoskeleton to maintain subcellular spatial organization. SYNE-1 also acts as a component of the LINC (LInker of Nucleoskeleton and Cytoskeleton) complex, which is involved in the connection between the nuclear lamina and the cytoskeleton. SYNE-1 contains two copies of the CH domain. This model corresponds to the first CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789   5 EKQQRKTFTAWCNSHL--RKAGTQIENIEEDFRDGLKLMLLLEVISGERLAKpERGKM--RVHKISNVNKALDFIASKGV 80
Cdd:cd21241    3 ERVQKKTFTNWINSYLakRKPPMKVEDLFEDIKDGTKLLALLEVLSGEKLPC-EKGRRlkRVHFLSNINTALKFLESKKI 81

                         90       100       110
                 ....*....|....*....|....*....|..
gi 114793789  81 KLVSIGAEEIVDGNVKMTLGMIWTIILRFAIQ 112
Cdd:cd21241   82 KLVNINPTDIVDGKPSIVLGLIWTIILYFQIE 113

second calponin homology (CH) domain found in synaptic nuclear envelope protein 1 (SYNE-1) and similar proteins; SYNE-1, also called nesprin-1, enaptin, KASH domain-containing protein 1 (KASH1), myocyte nuclear envelope protein 1 (MYNE-1), or nuclear envelope spectrin repeat protein 1, is a multi-isomeric modular protein which forms a linking network between organelles and the actin cytoskeleton to maintain subcellular spatial organization. SYNE-1 also acts as a component of the LINC (LInker of Nucleoskeleton and Cytoskeleton) complex, which is involved in the connection between the nuclear lamina and the cytoskeleton. SYNE-1 contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 119 TSAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLD 198
Cdd:cd21243    4 GGAKKALLKWVQNAAAKRFGIEVKDFGPSWRDGVAFNAIIHSIRPDLVDMESLKRRSNRENLETAFTVAEKELGIPRLLD 83

                         90       100
                 ....*....|....*....|....*.
gi 114793789 199 AEDiVGTARPDEKAIMTYVSSFYHAF 224
Cdd:cd21243   84 PED-VDVDKPDEKSIMTYVAQFLKKY 108

calponin homology (CH) domain found in MICAL-like protein 1; MICAL-like protein 1 (MICAL-L1), also called molecule interacting with Rab13 (MIRab13), is a probable lipid-binding protein with higher affinity for phosphatidic acid, a lipid enriched in recycling endosome membranes. It is a tubular endosomal membrane hub that connects Rab35 and Arf6 with Rab8a. It may be involved in a late step of receptor-mediated endocytosis regulating endocytosed-EGF receptor trafficking. Alternatively, it may regulate slow endocytic recycling of endocytosed proteins back to the plasma membrane. MICAL-L1 may indirectly play a role in neurite outgrowth. It contains a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 121 AKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDAE 200
Cdd:cd21252    1 ARRALQAWCRRQCEGYPGVEIRDLSSSFRDGLAFCAILHRHRPDLIDFDSLSKDNVYENNRLAFEVAERELGIPALLDPE 80

                         90       100
                 ....*....|....*....|....*
gi 114793789 201 DIVGTARPDEKAIMTYVSSFYHAFS 225
Cdd:cd21252   81 DMVSMKVPDCLSIMTYVSQYYNHFS 105

first calponin homology (CH) domain found in dystonin and similar proteins; Dystonin, also called 230 kDa bullous pemphigoid antigen, 230/240 kDa bullous pemphigoid antigen, bullous pemphigoid antigen 1 (BPA or BPAG1), dystonia musculorum protein, or hemidesmosomal plaque protein, is a cytoskeletal linker protein that acts as an integrator of intermediate filaments, actin, and microtubule cytoskeleton networks. It is required for anchoring either intermediate filaments to the actin cytoskeleton in neural and muscle cells, or keratin-containing intermediate filaments to hemidesmosomes in epithelial cells. Dystonin contains two copies of the CH domain. This model corresponds to the first CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789   5 EKQQRKTFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLAKpERGKMRVHKISNVNKALDFIASKGVKLVS 84
Cdd:cd21236   15 DKVQKKTFTKWINQHLMKVRKHVNDLYEDLRDGHNLISLLEVLSGDTLPR-EKGRMRFHRLQNVQIALDYLKRRQVKLVN 93

                         90       100       110
                 ....*....|....*....|....*....|..
gi 114793789  85 IGAEEIVDGNVKMTLGMIWTIILRFAIQDISV 116
Cdd:cd21236   94 IRNDDITDGNPKLTLGLIWTIILHFQISDIHV 125

calponin homology (CH) domain found in the smoothelin family; The smoothelin family includes smoothelin and smoothelin-like proteins. Smoothelins are actin-binding cytoskeletal proteins that are abundantly expressed in healthy visceral (smoothelin-A) and vascular (smoothelin-B) smooth muscle. SMTNL1, also called calponin homology-associated smooth muscle protein (CHASM), plays a role in the regulation of contractile properties of both striated and smooth muscles. It can bind to calmodulin and tropomyosin. When it is unphosphorylated, SMTNL1 may inhibit myosin dephosphorylation. SMTNL2 is highly expressed in skeletal muscle and could be associated with differentiating myocytes. Members of this family contain a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 120 SAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDA 199
Cdd:cd21200    1 SIKQMLLEWCQAKTRGYEHVDITNFSSSWSDGMAFCALIHHFFPDAFDYSSLDPKNRRKNFELAFSTAEELADIAPLLEV 80

                         90       100
                 ....*....|....*....|....*..
gi 114793789 200 EDIVGTA-RPDEKAIMTYVSSFYHAFS 225
Cdd:cd21200   81 EDMVRMGnRPDWKCVFTYVQSLYRHLR 107

second calponin homology (CH) domain found in cortexillin; Cortexillins are actin-bundling proteins that play a critical role in regulating cell morphology and actin cytoskeleton reorganization. They play a major role in cytokinesis and contain two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 123 EGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDAEDi 202
Cdd:cd21226    3 DGLLAWCRQTTEGYDGVNITSFKSSFNDGRAFLALLHAYDPELFKQAAIEQMDAEARLNLAFDFAEKKLGIPKLLEAED- 81

                         90       100
                 ....*....|....*....|..
gi 114793789 203 VGTARPDEKAIMTYVSSFYHAF 224
Cdd:cd21226   82 VMTGNPDERSIVLYTSLFYHAF 103

calponin homology (CH) domain found in smoothelin-B and similar proteins; Smoothelins are actin-binding cytoskeletal proteins that are abundantly expressed in healthy visceral (smoothelin-A) and vascular (smoothelin-B) smooth muscle. The human SMTN gene encodes smoothelin-A and smoothelin-B. This model corresponds to the single CH domain of smoothelin-B. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 120 SAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDA 199
Cdd:cd21259    1 SIKQMLLDWCRAKTRGYENVDIQNFSSSWSDGMAFCALVHNFFPEAFDYSQLSPQNRRHNFEVAFSSAEKHADCPQLLDV 80

                         90       100
                 ....*....|....*....|..
gi 114793789 200 EDIVGTARPDEKAIMTYVSSFY 221
Cdd:cd21259   81 EDMVRMREPDWKCVYTYIQEFY 102

calponin homology (CH) domain found in the EH domain-binding protein (EHBP) family; The EHBP family includes EHBP1 and EHBP1-like protein (EHBP1L1). EHBP1 is a regulator of endocytic recycling and may play a role in actin reorganization by linking clathrin-mediated endocytosis to the actin cytoskeleton. It may act as an effector of small GTPases, including RAB-10 (Rab10), and play a role in vesicle trafficking. EHBP1 is associated with aggressive prostate cancer and insulin-stimulated trafficking and cell migration. EHBP1L1 may also act as Rab effector protein and play a role in vesicle trafficking. It coordinates Rab8 and Bin1 to regulate apical-directed transport in polarized epithelial cells. Members of this family contain a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 120 SAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKyLDIPKMLDA 199
Cdd:cd21198    1 SSGQDLLEWCQEVTKGYRGVKITNLTTSWRNGLAFCAILHHFRPDLIDFSSLSPHDIKENCKLAFDAAAK-LGIPRLLDP 79

                         90       100
                 ....*....|....*....|....*.
gi 114793789 200 EDIVGTARPDEKAIMTYVSSFYHAFS 225
Cdd:cd21198   80 ADMVLLSVPDKLSVMTYLHQIRAHFT 105

first calponin homology (CH) domain found in dystrophin and similar proteins; Dystrophin, encoded by the DMD gene, is a large, submembrane cytoskeletal protein that is the main component of the dystrophin-glycoprotein complex (DGC) in skeletal muscles. It links the transmembrane DGC to the actin cytoskeleton through binding strongly to the cytoplasmic tail of beta-dystroglycan, the transmembrane subunit of a highly O-glycosylated cell-surface protein. It is involved in maintaining the structural integrity of cells, as well as in the formation of the blood-brain barrier (BBB). Mutations in dystrophin lead to Duchenne muscular dystrophy (DMD). Moreover, dystrophin deficiency is associated with abnormal cerebral diffusion and perfusion, as well as in acute Trypanosoma cruzi infection. The dystrophin subfamily has been characterized by a compact cluster of domains comprising four EF-hand-like motifs and a ZZ-domain, followed by a looser region with two coiled-coils. These domains are believed to be involved in protein-protein interactions. In addition, dystrophin contains two syntrophin binding sites (SBSs) and a long N-terminal extension that comprises two actin-binding calponin homology (CH) domains, approximately 24 spectrin repeats (SRs) and a WW domain. This model corresponds to the first CH domain.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789   5 EKQQRKTFTAWCNSHLRKAGTQ-IENIEEDFRDGLKLMLLLEVISGERLAKpERGKMRVHKISNVNKALDFIASKGVKLV 83
Cdd:cd21231    4 EDVQKKTFTKWINAQFAKFGKPpIEDLFTDLQDGRRLLELLEGLTGQKLVK-EKGSTRVHALNNVNKALQVLQKNNVDLV 82

                         90       100
                 ....*....|....*....|....*....
gi 114793789  84 SIGAEEIVDGNVKMTLGMIWTIILRFAIQ 112
Cdd:cd21231   83 NIGSADIVDGNHKLTLGLIWSIILHWQVK 111

calponin homology (CH) domain found in molecule interacting with CasL protein 2; MICAL-2 is a nuclear [F-actin]-monooxygenase that promotes depolymerization of F-actin by mediating oxidation of specific methionine residues on actin to form methionine-sulfoxide, resulting in actin filament disassembly and preventing repolymerization. In the absence of actin, it also functions as a NADPH oxidase producing H(2)O(2). MICAL-2 acts as a key regulator of the serum response factor (SRF) signaling pathway elicited by nerve growth factor and serum. It mediates oxidation and subsequent depolymerization of nuclear actin, leading to the increased MKL1/MRTF-A presence in the nucleus, promoting SRF:MKL1/MRTF-A-dependent gene transcription. MICAL-2 contains a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 114793789 125 LLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDAEDIVG 204
Cdd:cd21250    9 LLTWCQKQTEGYQNVNVTDLTTSWKSGLALCAIIHRFRPELIDFDSLNEDDAVKNNQLAFDVAEREFGIPPVTTGKEMAS 88

                         90       100
                 ....*....|....*....|..
gi 114793789 205 TARPDEKAIMTYVSSFYHAFSG 226
Cdd:cd21250   89 AEEPDKLSMVMYLSKFYELFRG 110