high mobility group (HMG)-box found in group C SRY-related high-mobility group (HMG) box (Sox) transcription factors; SoxC transcription factors includes three members: SOX4, SOX11 and SOX12. They play key roles, often in redundancy, in multiple developmental pathways, including neurogenesis and skeletogenesis. SOX-4 is a transcriptional activator that promotes neuronal differentiation both in the adult and embryonic neural progenitors. It binds with high affinity to the T-cell enhancer motif 5'-AACAAAG-3' motif. SOX-4 is abnormally expressed in various cancers. SOX-11 is a neural transcriptional factor involved in precursor survival, neuronal fate determination, migration and morphogenesis. SOX-12, also called SOX-22, is a transcription factor essential for embryonic development and cell fate determination. It binds to the sequence 5'-AACAAT-3'.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 4507163   58 HIKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYKYRPRKK 133
Cdd:cd22029   1 HIKRPMNAFMVWSQIERRKIMEQQPDMHNAEISKRLGKRWKLLSDSEKIPFIEEAERLRLLHMQEYPDYKYRPRKK 76

high mobility group (HMG)-box found in group C SRY-related high-mobility group (HMG) box (Sox) transcription factors; SoxC transcription factors includes three members: SOX4, SOX11 and SOX12. They play key roles, often in redundancy, in multiple developmental pathways, including neurogenesis and skeletogenesis. SOX-4 is a transcriptional activator that promotes neuronal differentiation both in the adult and embryonic neural progenitors. It binds with high affinity to the T-cell enhancer motif 5'-AACAAAG-3' motif. SOX-4 is abnormally expressed in various cancers. SOX-11 is a neural transcriptional factor involved in precursor survival, neuronal fate determination, migration and morphogenesis. SOX-12, also called SOX-22, is a transcription factor essential for embryonic development and cell fate determination. It binds to the sequence 5'-AACAAT-3'.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 4507163   58 HIKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYKYRPRKK 133
Cdd:cd22029   1 HIKRPMNAFMVWSQIERRKIMEQQPDMHNAEISKRLGKRWKLLSDSEKIPFIEEAERLRLLHMQEYPDYKYRPRKK 76

high mobility group;

                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 4507163      58 HIKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYK 127
Cdd:smart00398   1 KPKRPMSAFMLFSQENRAKIKAENPDLSNAEISKKLGERWKLLSEEEKAPYEEKAKKDKERYEEEMPEYK 70

high mobility group protein; Provisional

                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 4507163    60 KRPMNAFMVWSQIERRKIMEQSPDMHN--AEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDY 126
Cdd:PTZ00199  24 KRALSAYMFFAKEKRAEIIAENPELAKdvAAVGKMVGEAWNKLSEEEKAPYEKKAQEDKVRYEKEKAEY 92

high mobility group (HMG)-box found in group C SRY-related high-mobility group (HMG) box (Sox) transcription factors; SoxC transcription factors includes three members: SOX4, SOX11 and SOX12. They play key roles, often in redundancy, in multiple developmental pathways, including neurogenesis and skeletogenesis. SOX-4 is a transcriptional activator that promotes neuronal differentiation both in the adult and embryonic neural progenitors. It binds with high affinity to the T-cell enhancer motif 5'-AACAAAG-3' motif. SOX-4 is abnormally expressed in various cancers. SOX-11 is a neural transcriptional factor involved in precursor survival, neuronal fate determination, migration and morphogenesis. SOX-12, also called SOX-22, is a transcription factor essential for embryonic development and cell fate determination. It binds to the sequence 5'-AACAAT-3'.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 4507163   58 HIKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYKYRPRKK 133
Cdd:cd22029   1 HIKRPMNAFMVWSQIERRKIMEQQPDMHNAEISKRLGKRWKLLSDSEKIPFIEEAERLRLLHMQEYPDYKYRPRKK 76

high mobility group (HMG)-box found in sex determining region Y (SRY)-box 4 (SOX4) and similar proteins; SOX-4 is a transcriptional activator that promotes neuronal differentiation both in the adult and embryonic neural progenitors. It binds with high affinity to the T-cell enhancer motif 5'-AACAAAG-3' motif. SOX-4 is abnormally expressed in various cancers. SOX-4 belongs to group C SRY-related high-mobility group (HMG) box (Sox) transcription factors.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 4507163   57 GHIKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYKYRPRKKVK 135
Cdd:cd22036   1 GHIKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYKYRPRKKVK 79

high mobility group (HMG)-box found in sex-determining region Y (SRY)-box (SOX) family transcription factors; The SOX gene family of transcription factors are characterized by the evolutionarily conserved SRY-type HMG box, which is a DNA binding domain that binds the minor groove of DNA on a common consensus site, (A/T)(A/T)CAA(A/T)G but with different levels of efficiency. Members include SRY and its homologs identified in mammals that can be subdivided into 8 groups (A, B1, B2, C, D, E, F, G, H). They are involved in embryonic development, regulating processes such as cell differentiation, maintenance of stemness, sex determination, and development of the central nervous, haematopoietic and other organ systems. The SOX gene family has a crucial role in carcinogenesis and cancer progression.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 4507163   58 HIKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYKYRPRK 132
Cdd:cd22004   1 HIKRPMNAFMVWSQQERKKIAKQNPKLHNSEISKILGKEWKKLTEEEKRPYVEEAERLREEHKKEYPDYKYRPRR 75

high mobility group (HMG)-box found in group E SRY-related high-mobility group (HMG) box (Sox) transcription factors; SoxE transcription factors includes three members: Sox8, Sox9, and Sox10. They function as important transcriptional regulators of neural differentiation and nervous system development. They regulate mammalian development directing sex determination, gliogenesis, pancreas specification and neural crest development. SOX-8 is specifically expressed by M cells in the intestinal epithelium. It acts as a transcription factor necessary for the maintenance of spermatogenesis. It may play a role in central nervous system, limb and facial development. SOX-9 is involved in cell differentiation, sex determination, and tumorigenesis. It plays a role in chondrocyte differentiation and skeletal development. SOX-10 plays a central role in the development of melanocytes and glial cells from neural crest precursors.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 4507163   58 HIKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYKYRPRK 132
Cdd:cd22031   1 HVKRPMNAFMVWAQAARRKLADQYPHLHNAELSKTLGKLWRLLSESEKRPFIEEAERLRVQHKKDHPDYKYQPRR 75

high mobility group (HMG)-box found in group F SRY-related high-mobility group (HMG) box (Sox) transcription factors; SoxF transcription factors includes three members: Sox7, Sox17, and Sox18. They regulate endothelial cell fate as well as development and differentiation of the developing heart, blood cells, and lymphatic vessels.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 4507163   58 HIKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYKYRPRKK 133
Cdd:cd22032   1 RIRRPMNAFMVWAKDERKRLADENPDLHNAELSKMLGKKWKSLSLAEKRPFVEEAERLRVQHMQDYPNYKYRPRRR 76

high mobility group (HMG)-box found in sex determining region Y (SRY)-box 7 (SOX7) and similar proteins; SOX-7 is an endothelial-associated transcription factor that acts as a tumor suppressor in a number of cancer types. It binds the DNA sequence 5'-AACAAT-3'. SOX-7 belongs to the group F of SRY-related high-mobility group (HMG) box (Sox) transcription factors.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 4507163   59 IKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYKYRPRKK 133
Cdd:cd22046  12 IRRPMNAFMVWAKDERKRLAVQNPDLHNAELSKMLGKSWKALTPSQKRPYVEEAERLRVQHMQDYPNYKYRPRRK 86

high mobility group (HMG)-box found in sex determining region Y (SRY)-box 18 (SOX18) and similar proteins; SOX-18 is a transcription factor involved in the development of cardiovascular and lymphatic vessels during embryonic development. It binds to the consensus sequence 5'-AACAAAG-3' and is able to trans-activate transcription via this site. SOX-18 belongs to the group F of SRY-related high-mobility group (HMG) box (Sox) transcription factors.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 4507163   59 IKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYKYRPRKK 133
Cdd:cd22048   4 IRRPMNAFMVWAKDERKRLAQQNPDLHNAVLSKMLGQSWKSLSAAEKRPFVEEAERLRVQHLQDHPNYKYRPRRK 78

high mobility group (HMG)-box found in sex-determining region Y protein (SRY) and similar proteins; SRY, also called testis-determining factor, is a transcriptional regulator that controls a genetic switch in male development. It promotes DNA bending and is also involved in pre-mRNA splicing. The SRY HMG box recognizes DNA by partial intercalation in the minor groove. It binds to the DNA consensus sequence 5'-[AT]AACAA[AT]-3'. SRY is the only member of group A SRY-related high-mobility group (HMG) box (Sox) transcription factors.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 4507163   59 IKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYKYRPRKKVK 135
Cdd:cd22034   5 VKRPMNAFIVWSRDQRRKMALENPRMRNSEISKQLGYQWKMLTEAEKWPFFQEAQKLQAMHREKYPNYKYRPRRKAK 81

HMG (high mobility group) box;

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 4507163     59 IKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDY 126
Cdd:pfam00505   1 PKRPMSAFFLFSKEQRAKLKAENPGLKNAEISKILGEKWKALSEEEKKPYEEKAEKEKARYEKEHPEY 68

high mobility group (HMG)-box found in Saccharomyces cerevisiae repressor ROX1 and similar proteins; This family includes class I members of the HMG-box superfamily of DNA-binding proteins, including Saccharomyces cerevisiae repressor ROX1, Schizosaccharomyces pombe mating-type M-specific polypeptide Mc (mat-Mc), Schizosaccharomyces pombe transcription factor ste11, Podospora anserina MAT+ sexual cell fertilization-promoting factor (FPR1), Podospora anserina sporulation minus regulator 2 (SMR2) and Candida albicans repressor of filamentous growth 1 (RFG1). These proteins contain a single HMG box, and bind the minor groove of DNA in a highly sequence-specific manner. ROX1, also called heme-dependent repression factor, or hypoxic function repressor, is a transcription factor that represses the expression of HEM13, COX5B, ANB1, CYC7 or AAC3. It binds to the DNA sequence 5'-RRRTAACAAGAG-3'. mat-Mc belongs to the mating type protein family, which contains sequence specific DNA-binding proteins that act as master switches in yeast differentiation by controlling gene expression in a cell type-specific fashion. mat-Mc is a positive regulator of MFM genes and is required for conjugation and efficient meiosis. Its HMG box recognizes the DNA sequence 5'-AACAAAG-3'. Ste11 is a key transcription factor for sexual development. It activates the transcription of the matp, matm, mei2, mfm, ste6 and rgs1 genes. It binds specifically to a DNA fragment carrying a 10-base motif 5'-TTCTTTGTTY-3'. FPR1 controls fertilization, probably by determining the mating type. SMR2 is a transcription factor that is required for post-fertilization events. It is required for the developmental events that occur in the female organ after fertilization. RFG1 is a transcription regulator that functions in both the positive and negative regulation of filamentous growth, depending upon environmental conditions.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 4507163   59 IKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYKYRP 130
Cdd:cd01389   1 IPRPPNAFILFRKEKHKQLRAQNPGLTNSEISKIIGKMWKNLSEEEKEPYKELAEEEKEEHKLKYPDYKYQP 72

high mobility group (HMG)-box domain superfamily; The High Mobility Group (HMG)-box is found in a variety of eukaryotic chromosomal proteins and transcription factors. HMGs bind to the minor groove of DNA and have been classified by DNA binding preferences. Two phylogenetically distinct groups of Class I proteins bind DNA in a sequence specific fashion and contain a single HMG box. One group (SOX-TCF) includes transcription factors, TCF-1, -3, -4, and also SRY and LEF-1, which bind four-way DNA junctions and duplex DNA targets. The second group (MATA) includes fungal mating type gene products MC, MATA1 and Ste11. Class II and III proteins (HMGB-UBF) bind DNA in a non-sequence specific fashion and contain two or more tandem HMG boxes. Class II members include non-histone chromosomal proteins, HMG1 and HMG2, which bind to bent or distorted DNA such as four-way DNA junctions, synthetic DNA cruciforms, kinked cisplatin-modified DNA, DNA bulges, cross-overs in supercoiled DNA, and can cause looping of linear DNA. Class III members include nucleolar and mitochondrial transcription factors, UBF and mtTF1, which bind four-way DNA junctions.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*....
gi 4507163   61 RPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKH 119
Cdd:cd00084   1 RPLSAYLLFSKEKRPKLKKENPDLSFTEISKLLGERWKELSEEEKQPYEEKAKEDKERY 59

high mobility group (HMG)-box found in structure-specific recognition protein 1 (SSRP1) and similar proteins; SSRP1, also called FACT complex subunit SSRP1, chromatin-specific transcription elongation factor 80 kDa subunit, facilitates chromatin transcription complex 80 kDa subunit (FACT 80 kDa subunit or FACTp80), facilitates chromatin transcription complex subunit SSRP1, recombination signal sequence recognition protein 1, or T160, is a factor that facilitates transcript elongation through nucleosomes. It is a component of the FACT complex, a general chromatin factor that acts to reorganize nucleosomes. The FACT complex is involved in multiple processes that require DNA as a template such as mRNA elongation, DNA replication, and DNA repair.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 4507163   61 RPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYK 127
Cdd:cd21994   1 RPMSAYMLWLNENREKIKKENPGISVTEISKKAGEIWKELDEEDKEKWEQKAEKAKERYDKAMKEYK 67

high mobility group (HMG)-box found in HMG box-containing protein 1 (HBP1) and similar proteins; HBP1, also called HMG box transcription factor 1, or high mobility group box transcription factor 1, is a transcriptional repressor that binds to the promoter region of target genes. It plays a role in the regulation of the cell cycle and the Wnt pathway. HBP1 binds preferentially to the sequence 5'-TTCATTCATTCA-3'.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPD 125
Cdd:cd21988   1 KRPMNAFMLFAKKYRVEYTQMHPGKDNRAISVILGDRWKKMKNEERRVYTLEAKALAEEHKRLHPD 66

second high mobility group (HMG)-box found in the high mobility group protein B (HMGB) family; HMGB proteins are chromatin-associated nuclear proteins that act as architectural factors in nucleoprotein structures, which regulate DNA-dependent processes including transcription. In mammals, four family members are present: HMGB1, HMGB2, HMGB3 and HMGB4. They regulate the expression of a wide range of genes through architectural remodeling of the chromatin structure. HMGB1, also called high mobility group protein 1 (HMG-1), is a prototypical alarmin or damage-associated molecular pattern (DAMP) molecule when released from cells. It plays important roles in the regulation of a wide range of processes, including transcription, replication, DNA repair, and nucleosome formation, in the nucleus. It also plays multiple roles in regulating inflammation and responses to cell and tissue stress. HMGB2, also called high mobility group protein 2 (HMG-2), has been implicated in numerous cellular processes, including proliferation, differentiation, apoptosis, and tumor growth. It acts as a chromatin-associated nonhistone protein involved in transcriptional regulation and nucleic-acid-mediated innate immune responses in mammalian. It binds DNA to stabilize nucleosomes and promote transcription. HMGB3, also called high mobility group protein 2a (HMG-2a), or high mobility group protein 4 (HMG-4), is an X-linked member of HMGB family and functions as a universal sentinel for nucleic acid-mediated innate immune responses. HMGB3 has been implicated in the regulation of cellular proliferation and differentiation, as well as inflammatory response. HMGB4 is expressed by neuronal cells and affects the expression of genes involved in neural differentiation. It is a factor that regulates chromatin and expression of neuronal differentiation markers. The family also includes high mobility group protein B1 pseudogene 1 (HMGB1P1) and nuclear auto-antigen Sp-100. HMGB1P1, also called putative high mobility group protein B1-like 1 (HMGB1L1), or putative high mobility group protein 1-like 1 (HMG-1L1), is an HMG-box containing protein that binds preferentially single-stranded DNA and unwinds double-stranded DNA. Sp-100, also called nuclear dot-associated Sp100 protein, or speckled 100 kDa. It is a tumor suppressor that is a major constituent of the promyelocytic leukemia (PML) bodies, a subnuclear organelle involved in many physiological processes including cell growth, differentiation and apoptosis. Through the regulation of ETS1, Sp-100 may play a role in angiogenesis, controlling endothelial cell motility and invasion. It may also play roles in the regulation of telomeres lengthening, TP53-mediated transcription, FAS-mediated apoptosis, etc. In addition, the family includes Drosophila melanogaster high mobility group protein DSP1 (dDSP1) and similar proteins. dDSP1, also called protein dorsal switch 1, is a Drosophila HMG1 protein that binds preferentially single-stranded DNA and unwinds double-stranded DNA. It converts Dorsal and nuclear factor (NF)-kappa B from transcriptional activators to repressors. Members of the HMGB family contain two HMG-box domains. This model corresponds to the second one.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYK 127
Cdd:cd21979   4 KRPPSAFFLFCSEHRPKIKGEHPGLSIGDVAKKLGEMWNNTSAKDKQPYEKKAAKLKEKYEKDIAAYR 71

first high mobility group (HMG)-box found in Saccharomyces cerevisiae intrastrand cross-link recognition protein (Ixr1) and similar proteins; Ixr1, also called structure-specific recognition protein (SSRP), is a homolog of the yeast mitochondrial regulator ABF2. It binds to platinated DNA and confers sensitivity to the anticancer drug cisplatin. Ixr1 contains two HMG-box domains. This model corresponds to the first one.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQ-SPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYK 127
Cdd:cd22011   2 KRPSSAYFLFSQEIRKNLKSQgSPEEKVPELSKRAAEQWRSLTLAEKQPYYDEVEVLKKQYDVEKEEYE 70

high mobility group (HMG)-box found in Saccharomyces cerevisiae non-histone chromosomal proteins NHP6A, NHP6B and similar proteins; This subfamily includes Saccharomyces cerevisiae high-mobility-group proteins NHP6A and its closely related paralog NHP6B. NHP6A and NHP6B seem to be functionally redundant. They are DNA-binding proteins that induce severe bending of DNA and are required for DNA-binding by the FACT complex, a general chromatin factor that acts to reorganize nucleosomes. They augment the fidelity of transcription by RNA polymerase III independently of any role in the FACT complex. They may also play essential roles in transcriptional initiation fidelity of some but not all tRNA genes.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAER 114
Cdd:cd01390  15 KRGLSAYMFFSQDNREKVKEENPDATFGEVGKLLGEKWKELSEEEKAPYEEKAAK 69

high mobility group (HMG)-box found in Arabidopsis thaliana high mobility group B protein 1 (HMGB1) and similar proteins; This subfamily contains a group of Arabidopsis thaliana HMGB family proteins, including HMGB1, 2, 3, 4, 5, 7, 12 and 14. They bind preferentially to double-stranded DNA. HMGB1 modulates general plant growth and stress tolerance and confers sensitivity to salt and genotoxic (methyl methanesulfonate, MMS) stresses. HMGB2 and HMGB5 confer sensitivity to salt and drought stresses. HMGB7 is required for karyogamy during female gametophyte development, when the two polar nuclei fuse to form the diploid central cell nucleus. Members of this subfamily contain only one HMG-box domain.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*....
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLK 118
Cdd:cd22005   1 KRPPTAFFLFLADFRKTYKKKNPDKSVKAVGKAAGEKWKSMSDEEKAPYVEKAEKEKAE 59

high mobility group (HMG)-box found in Arabidopsis thaliana FACT complex subunit SSRP1 and similar proteins; SSRP1, also called facilitates chromatin transcription complex subunit SSRP1, high mobility group B protein 8, nucleosome/chromatin assembly factor group D 08 (or D 8), protein NUCLEAR FUSION DEFECTIVE 8, or recombination signal sequence recognition protein 1, is a component of the FACT complex, a general chromatin factor that acts to reorganize nucleosomes. The FACT complex is involved in multiple processes that require DNA as a template such as mRNA elongation, DNA replication, and DNA repair. SSRP1 may bind specifically to double-stranded DNA. It is required for karyogamy during female gametophyte development, when the two polar nuclei fuse to form the diploid central cell nucleus. SSRP1 contains only one HMG-box domain.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYK 127
Cdd:cd22013  10 KRALSGFMFFSLMERENLKKEKPGISFGEVGKVLGEKWKNMSADDKAPYEAKAQVDKERYKKEMSGYK 77

HMG-box domain; This short 71 residue domain is an HMG-box domain. HMG-box domains mediate re-modelling of chromatin-structure. Mammalian HMG-box proteins are of two types: those that are non-sequence-specific DNA-binding proteins with two HMG-box domains and a long highly acidic C-tail; and a diverse group of sequence-specific transcription factor-proteins with either a single HMG-box or up to six copies, and no acidic C-tail.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 4507163     60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDY 126
Cdd:pfam09011   5 KRARNAYAFFVQEMIPEHKRQNPVIGFAEVSKLCSERWKNLSEEEKEKYEEMAKEDKNRYDREMGTY 71

high mobility group (HMG)-box found in high mobility group protein 20B (HMG20B) and similar proteins; HMG20B, also called SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily E member 1-related, SMARCE1-related protein (SMARCE1R), BRCA2-associated factor 35 (BRAF35), HMG box-containing protein 20B, HMG domain-containing protein 2 (HMGXB2), HMG domain-containing protein HMGX2, Sox-like transcriptional factor, or structural DNA-binding protein BRAF35, is a DNA binding factor that acts as a repressor of erythroid differentiation. It is required for correct progression through the G2 phase of the cell cycle and entry into mitosis. It is also required for RCOR1/CoREST mediated repression of neuronal specific gene promoters. HMG20B is a core subunit of the Lys-specific demethylase 1/REST co-repressor 1 (LSD1-CoREST) histone demethylase complex.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYK 127
Cdd:cd22018   3 KAPVTGYVRFLNERREQIRTQHPDLPFPEITKMLGAEWSKLQPHEKQRYLDEAERDKQQYMKELREYQ 70

first high mobility group (HMG)-box found in Arabidopsis thaliana high mobility group B protein 6 (HMGB6) and similar proteins; HMGB6, also called nucleosome/chromatin assembly factor group D 06 (or D 6), WRKY transcription factor 53 (WRKY53), or WRKY DNA-binding protein 53, is a master regulator of age-induced leaf senescence. It acts in a complex transcription factor signaling network regulating senescence specific gene expression; hydrogen peroxide might be involved in signal transduction. The subfamily also includes Arabidopsis thaliana HMGB13 (also known as nucleosome/chromatin assembly factor group D 13). Both HMGB6 and HMGB13 contain three HMG-box domains. This model corresponds to the first one.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHM 120
Cdd:cd22006   1 KKPKTAYFLWCKDQREEVKKENPNADFSEVSKILGAKWKNLSEEEKKPYEEKYKEEKEKYL 61

third high mobility group (HMG)-box found in Arabidopsis thaliana high mobility group B protein 6 (HMGB6) and similar proteins; HMGB6, also called nucleosome/chromatin assembly factor group D 06 (or D 6), WRKY transcription factor 53 (WRKY53), or WRKY DNA-binding protein 53, is a master regulator of age-induced leaf senescence. It acts in a complex transcription factor signaling network regulating senescence specific gene expression; hydrogen peroxide might be involved in signal transduction. The subfamily also includes Arabidopsis thaliana HMGB13 (also known as nucleosome/chromatin assembly factor group D 13). Both HMGB6 and HMGB13 contain three HMG-box domains. This model corresponds to the third one.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKHMADYPDYK 127
Cdd:cd22008  11 KKPASSYLLFGKEYRKKLQEERPGANNATVTALISLKWKELGEEEKQVYNDKAAVLMEKYKKEVEEYN 78

high mobility group (HMG)-box found in HMG domain-containing protein 4 (HMGXB4) and similar proteins; HMGXB4, also called HMG box-containing protein 4, high mobility group protein 2-like 1 (HMG2L1), or protein HMGBCG, is a non-histone chromosomal protein that negatively regulates Wnt/beta-catenin signaling during development. It plays a role in the hematopoietic system.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERLRLKH 119
Cdd:cd21982   2 KKNMSAYQVFCKEYRVSIVAEHPGIDFGELSKKLAEVWKQLPEKDKLVWKQKAQYLQHKQ 61

high mobility group (HMG)-box found in Saccharomyces cerevisiae high mobility group protein 1 (HMO1) and similar proteins; HMO1, also called high spontaneous mutagenesis protein 2 (HSM2), is a DNA-binding protein that is probably part of the rDNA transcription apparatus. It acts synergetically with the RPA49 subunit of RNA polymerase I during rDNA transcription. It may participate in mutagenesis control.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*....
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPF 108
Cdd:cd22015   2 KKPLTPYFAFSNHVRPQLKAERPKASPTEIAEEISERWANLSDEEKQLW 50

high mobility group (HMG)-box found in PMS1 protein homolog 1 (PMS1) and similar proteins; PMS1, also called DNA mismatch repair protein PMS1, is probably involved in the repair of mismatches in DNA.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*.
gi 4507163   59 IKRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAER 114
Cdd:cd21985   2 IRKPMSASALFEQETRPQFLAENPKASLQDITLKIEERWKNLSEEEKKKYEEKAAK 57

high mobility group (HMG)-box found in protein polybromo-1 (PB1) and similar proteins; PB1, also called BRG1-associated factor 180 (BAF180), or polybromo-1D, is a subunit of the PBAF (polybromo/Brg1-associated factor) chromatin-remodeling complex required for kinetochore localization during mitosis and the transcription of estrogen-responsive genes. It is involved in transcriptional activation and repression of select genes by chromatin remodeling. It acts as a negative regulator of cell proliferation.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*.
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAERL 115
Cdd:cd21984   1 KRNPSGYILFSSEVRKSIKAENPDYSFGEISRLVGTEWRNLPAEKKAEYEERAQKQ 56

first high mobility group (HMG)-box found in upstream-binding factor 1 (UBF1) and similar proteins; UBF1, also called UBTF, nucleolar transcription factor 1, or auto-antigen NOR-90, is a nucleolar transcription factor that recognizes the ribosomal RNA gene promoter and activates transcription mediated by RNA polymerase I through cooperative interactions with the transcription factor SL1/TIF-IB complex. It binds specifically to the upstream control element. UBF1 contains six HMG-box domains. This model corresponds to the first one. This model also includes the first HMG-box domain of upstream-binding factor 1-like protein 1 (UBTFL1), which contains two HMG-box domains.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 4507163   60 KRPMNAFMVWSQIERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFIREAErlrlKHMADYPDYKYRPRK 132
Cdd:cd21998   5 KKPLTPYFRFFMEKRAKYAKKHPEMSNLELTKILSKKYKELPEKKKQKYIQDYE----KEKEEYEQKMARFRE 73

first high mobility group (HMG)-box found in mitochondrial transcription factor A (TFA) and similar proteins; TFA, also called TFAM, mitochondrial transcription factor 1 (TF1), transcription factor 6 (TCF-6), or transcription factor 6-like 2, binds to the mitochondrial light strand promoter and functions in mitochondrial transcription regulation. It is a component of the mitochondrial transcription initiation complex, composed of at least TFB2M, TFAM and POLRMT that is required for basal transcription of mitochondrial DNA. TFA is required for accurate and efficient promoter recognition by the mitochondrial RNA polymerase. It can unwind DNA. It bends the mitochondrial light strand promoter DNA into a U-turn shape via its HMG boxes. TFA is required for maintenance of normal levels of mitochondrial DNA and may play a role in organizing and compacting mitochondrial DNA. TFA contains two HMG-box domains. This model corresponds to the first one.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 4507163   60 KRPMNAFMVWSQiERRKIMEQSPDMHNAEISKRLGKRWKLLKDSDKIPFiREAERlrlkhmADYPDYK 127
Cdd:cd21986   2 KRPLSPYLRFYR-EQLPSFPAQNPDATTDLSKRIGERWRELPDSQKKKY-QDAYK------AEWQKYK 61