SAND domain; The DNA binding activity of two proteins has been mapped to the SAND domain. The conserved KDWK motif is necessary for DNA binding, and it appears to be important for dimerization. This region is also found in the putative transcription factor RegA from the multicellular green alga Volvox cateri. This region of RegA is known as the VARL domain.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1622852368 316 DFQAPLLPVTCGGVKGILHKEKLKQGSFLKCIQTEDgNWFTPGEFETKGGYARSKNWKLSVRCGGWPLQRLMKEGSL 392
Cdd:pfam01342   1 DFDSPVLPVTCGAAKGLLHKKKFKQGISGKCIQNED-SWLTPKEFEIEGGKASSKDWKRSIRCGGKPLRELIEKGLL 76

SAND domain; The DNA binding activity of two proteins has been mapped to the SAND domain. The conserved KDWK motif is necessary for DNA binding, and it appears to be important for dimerization. This region is also found in the putative transcription factor RegA from the multicellular green alga Volvox cateri. This region of RegA is known as the VARL domain.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1622852368 316 DFQAPLLPVTCGGVKGILHKEKLKQGSFLKCIQTEDgNWFTPGEFETKGGYARSKNWKLSVRCGGWPLQRLMKEGSL 392
Cdd:pfam01342   1 DFDSPVLPVTCGAAKGLLHKKKFKQGISGKCIQNED-SWLTPKEFEIEGGKASSKDWKRSIRCGGKPLRELIEKGLL 76

PHD finger found in the Sp100/Sp140 family of nuclear body components; The Sp100/Sp140 family includes nuclear body proteins SP100, SP140, and similar proteins. Sp110, also termed interferon-induced protein 41/75, or speckled 110 kDa, or transcriptional coactivator Sp110, is a leukocyte-specific component of the nuclear body. It may function as a nuclear hormone receptor transcriptional coactivator that may play a role in inducing differentiation of myeloid cells. It is also involved in resisting intracellular pathogens and functions as an important drug target for preventing intracellular pathogen diseases, such as tuberculosis, hepatic veno-occlusive disease, and intracellular cancers. Sp110 gene polymorphisms may be associated with susceptibility to tuberculosis in Chinese population. Sp110 contains a Sp100-like domain, a SAND domain, a plant homeodomain (PHD) finger, and a bromodomain (BRD). SP140, also termed lymphoid-restricted homolog of Sp100 (LYSp100), or nuclear autoantigen Sp-140, or speckled 140 kDa, is an interferon inducible nuclear leukocyte-specific protein involved in primary biliary cirrhosis and a risk factor in chronic lymphocytic leukemia. It is also implicated in innate immune response to human immunodeficiency virus type 1 (HIV-1) by binding to the virus's viral infectivity factor (Vif) protein. Sp140 contains a nuclear localization signal, a dimerization domain (HSR or CARD domain), a SAND domain, a PHD finger, and a BRD.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 1622852368 424 ECEVCRDGGELFCCDTCSRVFHEDCHIAPVETERTPWSCIFC 465
Cdd:cd15626     1 KCEVCGQEGKLFCCCTCSRVFHEDCHIPPVEAQRSPWSCTFC 42

PHD zinc finger; The plant homeodomain (PHD) finger is a C4HC3 zinc-finger-like motif found in nuclear proteins thought to be involved in epigenetics and chromatin-mediated transcriptional regulation. The PHD finger binds two zinc ions using the so-called 'cross-brace' motif and is thus structurally related to the RING finger and the FYVE finger. It is not yet known if PHD fingers have a common molecular function. Several reports suggest that it can function as a protein-protein interacton domain and it was recently demonstrated that the PHD finger of p300 can cooperate with the adjacent BROMO domain in nucleosome binding in vitro. Other reports suggesting that the PHD finger is a ubiquitin ligase have been refuted as these domains were RING fingers misidentified as PHD fingers.

                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*.
gi 1622852368  425 CEVCR---DGGELFCCDTCSRVFHEDCHIAPVETE--RTPWSCIFC 465
Cdd:smart00249   2 CSVCGkpdDGGELLQCDGCDRWYHQTCLGPPLLEEepDGKWYCPKC 47

SAND domain; The DNA binding activity of two proteins has been mapped to the SAND domain. The conserved KDWK motif is necessary for DNA binding, and it appears to be important for dimerization. This region is also found in the putative transcription factor RegA from the multicellular green alga Volvox cateri. This region of RegA is known as the VARL domain.

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1622852368 316 DFQAPLLPVTCGGVKGILHKEKLKQGSFLKCIQTEDgNWFTPGEFETKGGYARSKNWKLSVRCGGWPLQRLMKEGSL 392
Cdd:pfam01342   1 DFDSPVLPVTCGAAKGLLHKKKFKQGISGKCIQNED-SWLTPKEFEIEGGKASSKDWKRSIRCGGKPLRELIEKGLL 76

PHD finger found in the Sp100/Sp140 family of nuclear body components; The Sp100/Sp140 family includes nuclear body proteins SP100, SP140, and similar proteins. Sp110, also termed interferon-induced protein 41/75, or speckled 110 kDa, or transcriptional coactivator Sp110, is a leukocyte-specific component of the nuclear body. It may function as a nuclear hormone receptor transcriptional coactivator that may play a role in inducing differentiation of myeloid cells. It is also involved in resisting intracellular pathogens and functions as an important drug target for preventing intracellular pathogen diseases, such as tuberculosis, hepatic veno-occlusive disease, and intracellular cancers. Sp110 gene polymorphisms may be associated with susceptibility to tuberculosis in Chinese population. Sp110 contains a Sp100-like domain, a SAND domain, a plant homeodomain (PHD) finger, and a bromodomain (BRD). SP140, also termed lymphoid-restricted homolog of Sp100 (LYSp100), or nuclear autoantigen Sp-140, or speckled 140 kDa, is an interferon inducible nuclear leukocyte-specific protein involved in primary biliary cirrhosis and a risk factor in chronic lymphocytic leukemia. It is also implicated in innate immune response to human immunodeficiency virus type 1 (HIV-1) by binding to the virus's viral infectivity factor (Vif) protein. Sp140 contains a nuclear localization signal, a dimerization domain (HSR or CARD domain), a SAND domain, a PHD finger, and a BRD.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 1622852368 424 ECEVCRDGGELFCCDTCSRVFHEDCHIAPVETERTPWSCIFC 465
Cdd:cd15626     1 KCEVCGQEGKLFCCCTCSRVFHEDCHIPPVEAQRSPWSCTFC 42

PHD finger 1 found in PHD finger protein 12 (PHF12); PHF12, also termed PHD factor 1 (Pf1), is a plant homeodomain (PHD) zinc finger-containing protein that bridges the transducin-like enhancer of split (TLE) corepressor to the mSin3A-histone deacetylase (HDAC)-complex, and further represses transcription at targeted genes. PHF12 also interacts with MRG15 (mortality factor-related genes on chromosome 15), a member of the mortality factor (MORF) family of proteins implicated in regulating cellular senescence. PHF12 contains two plant-homeodomain (PHD) zinc fingers followed by a polybasic region. The PHD fingers function downstream of phosphoinositide signaling triggered by the interaction between polybasic regions and phosphoinositides. This model corresponds to the first PHD finger.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 1622852368 425 CEVCRDGGELFCCDTCSRVFHEDCHIAPVETERTP---WSCIFC 465
Cdd:cd15533     2 CDSCGEGGDLLCCDRCPASFHLQCCNPPLDEEDLPpgeWLCHRC 45

PHD finger found in transcriptional intermediary factor 1 delta (TIF1delta); TIF1delta, also termed tripartite motif-containing protein 66 (TRIM66), is a novel heterochromatin protein 1 (HP1)-interacting member of the transcriptional intermediary factor1 (TIF1) family expressed by elongating spermatids. Like other TIF1 proteins, TIF1delta displays a potent trichostatin A (TSA)-sensitive repression function; TSA is a specific inhibitor of histone deacetylases. Moreover, TIF1delta plays an important role in heterochromatin-mediated gene silencing during postmeiotic phases of spermatogenesis. It functions as a negative regulator of postmeiotic genes acting through HP1 isotype gamma (HP1gamma) complex formation and centromere association. TIF1delta contains an N-terminal RBCC (RING finger, B-box zinc-fingers, coiled-coil), a plant homeodomain (PHD) finger, followed by a bromodomain in the C-terminal region.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*..
gi 1622852368 421 NLDECEVCRDGGELFCCDTCSRVFHEDCHI-APVETERTPWSCIFCR 466
Cdd:cd15625     1 NEDFCAVCLNGGELLCCDRCPKVFHLSCHVpALLSFPVGEWVCTLCR 47

PHD finger found in transcription intermediary factor 1-alpha (TIF1-alpha); TIF1-alpha, also termed tripartite motif-containing protein 24 (TRIM24), or E3 ubiquitin-protein ligase TRIM24, or RING finger protein 82, belongs to the TRIM/RBCC protein family. It interacts specifically and in a ligand-dependent manner with the ligand binding domain (LBD) of several nuclear receptors (NRs), including retinoid X (RXR), retinoic acid (RAR), vitamin D3 (VDR), estrogen (ER), and progesterone (PR) receptors. It also associates with heterochromatin-associated factors HP1alpha, MOD1 (HP1beta) and MOD2 (HP1gamma), as well as vertebrate Kruppel-type (C2H2) zinc finger proteins that contain transcriptional silencing domain KRAB. TIF1-alpha is a ligand-dependent co-repressor of retinoic acid receptor (RAR) that interacts with multiple nuclear receptors in vitro via an LXXLL motif, and further acts as a gatekeeper of liver carcinogenesis. It also functions as an E3-ubiquitin ligase targeting p53 and is broadly associated with chromatin silencing. Moreover, it is a chromatin regulator that recognizes specific, combinatorial histone modifications through its C-terminal plant homeodomain (PHD)-Bromodomain (Bromo) region. In addition, it interacts with chromatin and estrogen receptor to activate estrogen-dependent genes associated with cellular proliferation and tumor development. TIF1-alpha contains an N-terminal RBCC (RING finger, B-box zinc-fingers, coiled-coil), a plant homeodomain (PHD) finger, followed by a bromodomain in the C-terminal region.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 1622852368 425 CEVCRDGGELFCCDTCSRVFHEDCHIAPVET-ERTPWSCIFC 465
Cdd:cd15622     2 CAVCQNGGELLCCEKCPKVFHLSCHVPTLMNfPSGEWICTFC 43

PHD finger found in PHD finger protein 21A (PHF21A); PHF21A (also termed BHC80a or BRAF35-HDAC complex protein BHC80) along with HDAC1/2, CtBP1, CoREST, and BRAF35, is associated with LSD1, a lysine (K)-specific histone demethylase. It inhibits LSD1-mediated histone demethylation in vitro. PHF21A is predominantly present in the central nervous system and spermatogenic cells and is one of the six components of BRAF-HDAC complex (BHC) involved in REST-dependent transcriptional repression of neuron-specific genes in non-neuronal cells. It acts as a scaffold protein in BHC in neuronal as well as non-neuronal cells and also plays a role in spermatogenesis. PHF21A contains a C-terminal plant homeodomain (PHD) finger that is responsible for the binding directly to each of five other components of BHC, and of organizing BHC mediating transcriptional repression.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 1622852368 425 CEVCRDGGELFCCDTCSRVFHEDCHIAPVETERT-PWSCIFC 465
Cdd:cd15523     2 CSVCRKSGELLMCDTCSLVYHLDCLDPPLKTIPKgMWICPKC 43

PHD finger 1 found in class II Chromodomain-Helicase-DNA binding (CHD) proteins; Class II CHD proteins includes chromodomain-helicase-DNA-binding protein CHD3, CHD4, and CHD5, which are nuclear and ubiquitously expressed chromatin remodelling ATPases generally associated with histone deacetylases (HDACs). They are involved in DNA Double Strand Break (DSB) signaling, DSB repair and/or p53-dependent pathways such as apoptosis and senescence, as well as in the maintenance of genomic stability, and/or cancer prevention. They function as subunits of the Nucleosome Remodelling and Deacetylase (NuRD) complex, which is generally associated with gene repression, heterochromatin formation, and overall chromatin compaction. In contrast to the class I CHD enzymes (CHD1 and CHD2), class II CHD proteins lack identifiable DNA-binding domains, but possess a C-terminal coiled-coil region. Moreover, in addition to the tandem chromodomains and a helicase domain, they all harbor tandem plant homeodomain (PHD) zinc fingers involved in the recognition of methylated histone tails. This model corresponds to the first PHD finger.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 1622852368 425 CEVCRDGGELFCCDTCSRVFHEDChIAPvETERTP---WSCIFC 465
Cdd:cd15531     2 CEVCQQGGEIILCDTCPRAYHLVC-LDP-ELEKAPegkWSCPHC 43

ADDz domain found in ATRX (alpha-thalassemia/mental retardation, X-linked); ADDz_ATRX is a PHD-like zinc finger domain of ATRX, which belongs to the SNF2 family of chromatin remodeling proteins. ATRX is a large chromatin-associated nuclear protein with two domains, ADDz_ATRX at the N-terminus, followed by a C-terminal ATPase/helicase domain. The ADDz_ATRX domain recognizes a specific methylated histone, and this interaction is required for heterochromatin localization of the ATRX protein. Missense mutations in either of the two ATRX domains lead to the X-linked alpha-thalassemia and mental retardation syndrome; however the mutations in the ADDz_ATRX domain produce a more severe disease phenotype that may also relate to disturbing unknown functions or interaction sites of this domain. The ADDz domain is also present in chromatin-associated proteins cytosine-5-methyltransferase 3 (Dnmt3); it is a PHD-like zinc finger motif that contains two parts, a C2-C2 and a PHD-like zinc finger. PHD zinc finger domains have been identified in more than 40 proteins that are mainly involved in chromatin mediated transcriptional control; the classical PHD zinc finger has a C4-H-C3 motif that spans about 50-80 amino acids. In ADDz, the conserved histidine residue of the PHD finger is replaced by a cysteine, and an additional zinc finger C2-C2 like motif is located about twenty residues upstream of the C4-C-C3 motif.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1622852368 424 ECEVCRDGGELFCCDTCSRVFHEDC---HIAPVETERT----PWSCIFCR 466
Cdd:cd11726    52 YCRWCGQGGDLICCDFCPNVFCKKCikrNLGRAELSRIeesdKWKCFVCD 101

PHD finger 5 found in nuclear receptor-binding SET domain-containing (NSD) proteins; The nuclear receptor binding SET domain (NSD) protein is a family of three HMTases, NSD1, NSD2/MMSET/WHSC1, and NSD3/WHSC1L1, that are critical in maintaining chromatin integrity. Reducing NSD activity through specific lysine-HMTase inhibitors appears promising to help suppress cancer growth. NSD proteins have specific mono- and dimethylase activities for H3K36, and they play non-redundant roles during development. NSD1 plays a role in several pathologies, including but not limited to Sotos and Weaver syndromes, acute myeloid leukemia, breast cancer, neuroblastoma, and glioblastoma formation. NSD2 is involved in cancer cell proliferation, survival, and tumor growth, by mediating constitutive NF-kappaB signaling via the cytokine autocrine loop. NSD3 is amplified in human breast cancer cell lines. Moreover, translocation resulting in NUP98 fusion to NSD3 leads to the development of acute myeloid leukemia. NSD proteins contain a catalytic suppressor of variegation, enhancer of zeste and trithorax (SET) domain, two proline-tryptophan-tryptophan-proline (PWWP) domains, five plant homeodomain (PHD) fingers, and an NSD-specific Cys-His rich domain (Cys5HisCysHis). This model corresponds to the fifth PHD finger.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|.
gi 1622852368 424 ECEVCRDGGELFCCD--TCSRVFHEDChIAPVETERTPWSC 462
Cdd:cd15568     1 ECFRCGDGGDLVLCDfkGCPKVYHLSC-LGLEKPPGGKWIC 40

PHD finger 1 found in Saccharomyces cerevisiae transcriptional regulatory protein Rco1 and similar proteins; Rco1 is a component of the Rpd3S histone deacetylase complex that plays an important role at actively transcribed genes. Rco1 contains two plant homeodomain (PHD) fingers, which are required for the methylation of histone H3 lysine 36 (H3K36) nucleosome recognition by Rpd3S. This model corresponds to the first PHD finger.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 1622852368 425 CEVCRDGGELFCCDTCSRVFHEDCHIAPVETERTP---WSCIFC 465
Cdd:cd15535     2 CSACGGYGSFLCCDGCPRSFHFSCLDPPLEEDNLPddeWFCNEC 45

PHD finger 2 found in monocytic leukemia zinc-finger protein (MOZ) and its factor (MORF); MOZ, also termed histone acetyltransferase KAT6A, YBF2/SAS3, SAS2 and TIP60 protein 3 (MYST-3), or runt-related transcription factor-binding protein 2, or zinc finger protein 220, is a MYST-type histone acetyltransferase (HAT) that functions as a coactivator for acute myeloid leukemia 1 protein (AML1)- and p53-dependent transcription. It possesses intrinsic HAT activity to acetylate both itself and lysine (K) residues on histone H2B, histone H3 (K14) and histone H4 (K5, K8, K12 and K16) in vitro and H3K9 in vivo. MOZ-related factor (MORF), also termed MOZ2, or histone acetyltransferase KAT6B, or MOZ, YBF2/SAS3, SAS2 and TIP60 protein 4 (MYST4), is a ubiquitously expressed transcriptional regulator with intrinsic HAT activity. It can interact with the Runt-domain transcription factor Runx2 and form a tetrameric complex with BRPFs, ING5, and EAF6. Both MOZ and MORF are catalytic subunits of HAT complexes that are required for normal developmental programs, such as hematopoiesis, neurogenesis, and skeletogenesis, and are also implicated in human leukemias. MOZ is also the catalytic subunit of a tetrameric inhibitor of growth 5 (ING5) complex, which specifically acetylates nucleosomal histone H3K14. Moreover, MOZ and MORF are involved in regulating transcriptional activation mediated by Runx2 (or Cbfa1), a Runt-domain transcription factor known to play important roles in T cell lymphomagenesis and bone development, and its homologs. MOZ contains a linker histone 1 and histone 5 domains and two plant homeodomain (PHD) fingers. In contrast, MORF contains an N-terminal region containing two PHD fingers, a putative HAT domain, an acidic region, and a C-terminal Ser/Met-rich domain. The family corresponds to the first PHD finger.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*
gi 1622852368 425 CEVCRDGGE---LFCCDTCSRVFHEDCHIAPVETERT-PWSCIFC 465
Cdd:cd15527     2 CSVCQDSGNadnLLFCDACDKGFHMECHDPPLTRMPKgKWVCQIC 46

PHD finger 4 found in nuclear receptor-binding SET domain-containing (NSD) proteins; The nuclear receptor binding SET domain (NSD) protein is a family of three HMTases, NSD1, NSD2/MMSET/WHSC1, and NSD3/WHSC1L1, that are critical in maintaining chromatin integrity. Reducing NSD activity through specific lysine-HMTase inhibitors appears promising to help suppress cancer growth. NSD proteins have specific mono- and dimethylase activities for H3K36, and they play non-redundant roles during development. NSD1 plays a role in several pathologies, including but not limited to Sotos and Weaver syndromes, acute myeloid leukemia, breast cancer, neuroblastoma, and glioblastoma formation. NSD2 is involved in cancer cell proliferation, survival, and tumor growth, by mediating constitutive NF-kappaB signaling via the cytokine autocrine loop. NSD3 is amplified in human breast cancer cell lines. Moreover, translocation resulting in NUP98 fusion to NSD3 leads to development of acute myeloid leukemia. NSD proteins contain a catalytic suppressor of variegation, enhancer of zeste and trithorax (SET) domain, two proline-tryptophan-tryptophan-proline (PWWP) domains, five plant homeodomain (PHD) fingers, and an NSD-specific Cys-His rich domain (Cys5HisCysHis). This model corresponds to the fourth PHD finger.

                          10        20
                  ....*....|....*....|....
gi 1622852368 425 CEVCRDGGELFCCDTCSRVFHEDC 448
Cdd:cd15567     2 CFICSEGGSLICCESCPASFHPEC 25

PHD finger 1 found in bromodomain and PHD finger-containing transcription factor (BPTF); BPTF, also termed nucleosome-remodeling factor subunit BPTF, or fetal Alz-50 clone 1 protein (FAC1), or fetal Alzheimer antigen, functions as a transcriptional regulator that exhibits altered expression and subcellular localization during neuronal development and neurodegenerative diseases such as Alzheimer's disease. It interacts with the human orthologue of the Kelch-like Ech-associated protein (Keap1). Its function and subcellular localization can be regulated by Keap1. Moreover, BPTF is a novel DNA-binding protein that recognizes the DNA sequence CACAACAC and represses transcription through this site in a phosphorylation-dependent manner. Furthermore, BPTF interacts with the Myc-associated zinc finger protein (ZF87/MAZ) and alters its transcriptional activity, which has been implicated in gene regulation in neurodegeneration. Some family members contain two or three plant homeodomain (PHD) fingers, which may be involved in complex formation with histone H3 trimethylated at K4 (H3K4me3). This family corresponds to the first PHD finger.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 1622852368 425 CEVCRDGGELFCCDTCSRVFHEDCHIAPVETERTP-WSCIFC 465
Cdd:cd15559     2 CRVCHKLGDLLCCETCSAVYHLECVDPPLEEVPEEdWQCEVC 43

PHD finger 1 found in polycomb repressive complex 2 (PRC2)-associated polycomb-like (PCL) family proteins MTF2, PHF19, and similar proteins; The family includes two PCL family proteins, metal-response element-binding transcription factor 2 (MTF2/PCL2) and PHF19/PCL3, which are homologs of PHD finger protein1 (PHF1). PCL family proteins are accessory components of the polycomb repressive complex 2 (PRC2) core complex and all contain an N-terminal Tudor domain followed by two PHD fingers, and a C-terminal MTF2 domain. They specifically recognize tri-methylated H3K36 (H3K36me3) through their N-terminal Tudor domains. The interaction between their Tudor domains and H3K36me3 is critical for both the targeting and spreading of PRC2 into active chromatin regions and for the maintenance of optimal repression of poised developmental genes where PCL proteins, H3K36me3, and H3K27me3 coexist. Moreover, unlike other PHD finger-containing proteins, the first PHD fingers of PCL proteins do not display histone H3K4 binding affinity and they do not affect the Tudor domain binding to histones. This model corresponds to the first PHD finger.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1622852368 425 CEVC-----RDGGELFCCDTCSRVFHEDCHIAPVETE----RTPWSCIFC 465
Cdd:cd15499     2 CSICggaeaRDGNEILICDKCDKGYHQLCHSPKVRTSplegDEKWFCSRC 51

PHD finger found in PHD finger protein 21B (PHF21B); PHF21B is a plant homeodomain (PHD) finger-containing protein whose biological function remains unclear. It shows high sequence similarity with PHF21A, which is associated with LSD1, a lysine (K)-specific histone demethylase and inhibits LSD1-mediated histone demethylation in vitro. PHD fingers can recognize the unmodified and modified histone H3 tail, and some have been found to interact with non-histone proteins.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 1622852368 425 CEVCRDGGELFCCDTCSRVFHEDCHIAPVET-ERTPWSCIFC 465
Cdd:cd15524     2 CAACKRGGNLQPCGTCPRAYHLDCLDPPLKTaPKGVWVCPKC 43

PHD finger 4 found in nuclear receptor-binding SET domain-containing protein 1 (NSD1); NSD1, also termed H3 Lysine-36 and H4 Lysine-20 specific histone-lysine N-methyltransferase, or androgen receptor coactivator 267 kDa protein, or androgen receptor-associated protein of 267 kDa, or H3-K36-HMTase H4-K20-HMTase, or Lysine N-methyltransferase 3B (KMT3B), or NR-binding SET domain-containing protein, is a lysine methyltransferase that preferentially methylates H3 on Lysine36 (H3-K36) and H4 on Lysine20 (H4-K20), which is primarily associated with active transcription. It plays a role in several pathologies, including but not limited to Sotos and Weaver syndromes, acute myeloid leukemia, breast cancer, neuroblastoma, and glioblastoma formation. It can alter transcription by interacting with the protein NSD1-interacting zinc finger protein 1 (NIZP1). It also mitigates caspase-1 activation by listeriolysin o (LLO) in macrophages, and requires functional LLO for the regulation of IL-1beta secretion. Moreover, NSD1 regulates RNA polymerase II (RNAP II) recruitment to bone morphogenetic protein 4 (BMP4). NSD1 contains a catalytic suppressor of variegation, enhancer of zeste and trithorax (SET) domain, two proline-tryptophan-tryptophan-proline (PWWP) domains, five plant homeodomain (PHD) fingers, and an NSD-specific Cys-His rich domain (Cys5HisCysHis). The SET domain is responsible for histone methyltransferase activity. The PWWP and PHD fingers are involved in protein-protein interactions. This model corresponds to the fourth PHD finger.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|.
gi 1622852368 425 CEVCRDGGELFCCDTCSRVFHEDChiAPVETERTPWSCIFC 465
Cdd:cd15656     2 CFVCSEGGSLLCCESCPAAFHREC--LNIDMPEGSWYCNDC 40

PHD finger found in Arabidopsis thaliana pathogenesis-related homeodomain protein (PRHA) and similar proteins; PRHA is a homeodomain protein encoded by a single-copy Arabidopsis thaliana homeobox gene, prha. It shows the capacity to bind to TAATTG core sequence elements but requires additional adjacent bases for high-affinity binding. PRHA contains a plant homeodomain (PHD) finger, a homeodomain, peptide repeats and a putative leucine zipper dimerization domain.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 1622852368 428 CRDGGELFCCD-TCSRVFHEDCHIAPVETERTP-----WSCIFC 465
Cdd:cd15504    10 ASPDNDILLCDgGCNRAYHQKCLEPPLLTEDIPpedegWLCPLC 53