PHD finger found in Set1 complex component SPP1; Set1C component SPP1, also called COMPASS component Spp1, or Complex proteins associated with set1 protein Spp1, or Suppressor of PRP protein 1, is a component of the COMPASS complex that links histone methylation to initiation of meiotic recombination. It induces double-strand break (DSB) formation by tethering to recombinationally cold regions. SPP1 interacts with H3K4me3 and Mer2, a protein required for DSB formation, to promote recruitment of potential meiotic DSB sites to the chromosomal axis. SPP1 contains a PHD finger, a zinc binding motif.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*.
gi 19075291 120 YCICQKPDDGSWMLGCDGCEDWFHGTCVNIPESYNDLTVQYFCPKC 165
Cdd:cd16039   1 YCICQKPDDGRWMIACDGCDEWYHFTCVNIPEADVELVDSFFCPPC 46

PHD finger found in Set1 complex component SPP1; Set1C component SPP1, also called COMPASS component Spp1, or Complex proteins associated with set1 protein Spp1, or Suppressor of PRP protein 1, is a component of the COMPASS complex that links histone methylation to initiation of meiotic recombination. It induces double-strand break (DSB) formation by tethering to recombinationally cold regions. SPP1 interacts with H3K4me3 and Mer2, a protein required for DSB formation, to promote recruitment of potential meiotic DSB sites to the chromosomal axis. SPP1 contains a PHD finger, a zinc binding motif.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*.
gi 19075291 120 YCICQKPDDGSWMLGCDGCEDWFHGTCVNIPESYNDLTVQYFCPKC 165
Cdd:cd16039   1 YCICQKPDDGRWMIACDGCDEWYHFTCVNIPEADVELVDSFFCPPC 46

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 19075291    120 YC-ICQKPDDGSWMLGCDGCEDWFHGTCVNIPESYNDLTVQYFCPKC 165
Cdd:smart00249   1 YCsVCGKPDDGGELLQCDGCDRWYHQTCLGPPLLEEEPDGKWYCPKC 47

PHD finger found in Set1 complex component SPP1; Set1C component SPP1, also called COMPASS component Spp1, or Complex proteins associated with set1 protein Spp1, or Suppressor of PRP protein 1, is a component of the COMPASS complex that links histone methylation to initiation of meiotic recombination. It induces double-strand break (DSB) formation by tethering to recombinationally cold regions. SPP1 interacts with H3K4me3 and Mer2, a protein required for DSB formation, to promote recruitment of potential meiotic DSB sites to the chromosomal axis. SPP1 contains a PHD finger, a zinc binding motif.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*.
gi 19075291 120 YCICQKPDDGSWMLGCDGCEDWFHGTCVNIPESYNDLTVQYFCPKC 165
Cdd:cd16039   1 YCICQKPDDGRWMIACDGCDEWYHFTCVNIPEADVELVDSFFCPPC 46

PHD finger found in CXXC-type zinc finger protein 1 (Cfp1); Cfp1, also termed CpG-binding protein, or PHD finger and CXXC domain-containing protein 1 (PCCX1), is a specificity factor that binds to unmethylated CpGs and links H3K4me3 with CpG islands (CGIs). It integrates both promoter CpG content and gene activity for accurate trimethylation of histone H3 Lys 4 (H3K4me3) deposition in embryonic stem cells. Moreover, Cfp1 is an essential component of the SETD1 histone H3K4 methyltransferase complex and functions as a critical regulator of histone methylation, cytosine methylation, cellular differentiation, and vertebrate development. Cfp1 contains a plant homeodomain (PHD) finger, a CXXC domain, and a CpG binding protein zinc finger C-terminal domain. Its CXXC domain selectively binds to non-methylated CpG islands, following by a preference for a guanosine nucleotide.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*.
gi 19075291 120 YCICQKPDDGSWMLGCDGCEDWFHGTCVNIPESYNDLTVQYFCPKC 165
Cdd:cd15553   1 YCICRSSDISRFMIGCDNCEEWYHGDCINITEKEAKAIKEWYCQQC 46

PHD finger found in PHD finger protein 3 (PHF3), and death-inducer obliterator variants Dido1, Dido2, and Dido3; PHF3 is a human homolog of yeast protein bypass of Ess1 (Bye1), a nuclear protein with a domain resembling the central domain in the transcription elongation factor TFIIS. It is ubiquitously expressed in normal tissues including brain, but its expression is significantly reduced or lost in glioblastomas. PHF3 contains an N-terminal plant homeodomain (PHD) finger, a central RNA polymerase II (Pol II)-binding TFIIS-like domain (TLD) domain, and a C-terminal Spen paralogue and orthologue C-terminal (SPOC) domain. This family also includes Dido gene encoding three alternative splicing variants (Dido1, 2, and 3), which have been implicated in a number of cellular processes such as apoptosis and chromosomal segregation, particularly in the hematopoietic system. Dido1 is important for maintaining embryonic stem (ES) cells and directly regulates the expression of pluripotency factors. It is the shortest isoform that contains only a highly conserved PHD finger responsible for the binding of histone H3 with a higher affinity for trimethylated lysine4 (H3K4me3). Gene Dido1 is a Bone morphogenetic protein (BMP) target gene and promotes BMP-induced melanoma progression. It also triggers apoptosis after nuclear translocation and caspase upregulation. Dido3 is the largest isoform and is ubiquitously expressed in all human tissues. It is dispensable for ES cell self-renewal and pluripotency, but is involved in the maintenance of stem cell genomic stability and tumorigenesis. Dido3 contains a PHD finger, a transcription elongation factor S-II subunit M (TFSIIM) domain, a SPOC module, and a long C-terminal region (CT) of unknown homology.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|
gi 19075291 120 YCICQKPDDGSWMLGCDGCEDWFHGTCVNIPESYNDLT----VQYFCPKC 165
Cdd:cd15552   1 YCICRKPHNNRFMICCDRCEEWFHGDCVGITEAQGKEMeeniEEYVCPKC 50

PHD finger found in transcription initiation factor TFIID subunit 3 (TAF3); TAF3 (also termed 140 kDa TATA box-binding protein-associated factor, TBP-associated factor 3, transcription initiation factor TFIID 140 kDa subunit (TAF140), or TAFII-140, is an integral component of TFIID) is a general initiation factor (GTF) that plays a key role in preinitiation complex (PIC) assembly through core promoter recognition. The interaction of H3K4me3 with TAF3 directs global TFIID recruitment to active genes, which regulates gene-selective functions of p53 in response to genotoxic stress. TAF3 is highly enriched in embryonic stem cells and is required for endoderm lineage differentiation and prevents premature specification of neuroectoderm and mesoderm. Moreover, TAF3, along with TRF3, forms a complex that is essential for myogenic differentiation. TAF3 contains a plant homeodomain (PHD) finger. This family also includes Drosophila melanogaster BIP2 (Bric-a-brac interacting protein 2) protein, which functions as an interacting partner of D. melanogaster p53 (Dmp53).

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*..
gi 19075291 120 YC-ICQKPDDGSWMLGCDGCEDWFHGTCVNIPESyNDLTVQYFCPKC 165
Cdd:cd15522   1 ICpICKKPDDGSPMIGCDECDDWYHWECVGITDE-PPEEDDWFCPKC 46

PHD finger found in death-inducer obliterator variants Dido1, Dido2, and Dido3; This family includes three alternative splicing variants (Dido1, 2, and 3) encoded by the Dido gene, which have been implicated in a number of cellular processes such as apoptosis and chromosomal segregation, particularly in the hematopoietic system. Dido1, also termed DIO-1, or death-associated transcription factor 1 (DATF-1), is important for maintaining embryonic stem (ES) cells and directly regulates the expression of pluripotency factors. It is the shortest isoform that contains only a highly conserved plant homeodomain (PHD) finger responsible for the binding of histone H3 with a higher affinity for trimethylated lysine 4 (H3K4me3). Gene Dido is a Bonemorphogenetic protein (BMP) target gene, which promotes BMP-induced melanoma progression. It also triggers apoptosis after nuclear translocation and caspase upregulation. Dido3 is the largest isoform ubiquitously expressed in all human tissues. It is dispensable for ES cell self-renewal and pluripotency, but involved in the maintenance of stem cell genomic stability and tumorigenesis. Dido3 contains a PHD finger, a transcription elongation factor S-II subunit M (TFSIIM) domain, aspen paralog and ortholog (SPOC) module, and a long C-terminal region (CT) of unknown homology. Its PHD finger interacts with H3K4me3.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|.
gi 19075291 119 LYCICQKPDDGSWMLGCDGCEDWFHGTCVNIPESYNDLTVQ----YFCPKC 165
Cdd:cd15639   4 LYCICRQPHNNRFMICCDRCEEWFHGDCVGITEARGRLLERngedYICPNC 54

PHD finger 2 found in Lysine-specific demethylase 5A (KDM5A); KDM5A (also termed Histone demethylase JARID1A, Jumonji/ARID domain-containing protein 1A, or Retinoblastoma-binding protein 2 (RBBP-2 or RBP2)) was originally identified as a retinoblastoma protein (Rb)-binding partner and its inactivation may be important for Rb to promote differentiation. It is involved in transcription through interacting with TBP, p107, nuclear receptors, Myc, Sin3/HDAC, Mad1, RBP-J, CLOCK, and BMAL1. KDM5A functions as a trimethylated histone H3 lysine 4 (H3K4me3) demethylase that belongs to the JARID subfamily within the JmjC proteins. It also displays DNA-binding activities that can recognize the specific DNA sequence CCGCCC. KDM5A contains the catalytic JmjC domain, JmjN, the BRIGHT domain, which is an AT-rich interacting domain (ARID), and a Cys5HisCys2 zinc finger, as well as three plant homeodomain (PHD) fingers. This model corresponds to the second PHD finger.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....*..
gi 19075291 120 YCICQKPDDGsWMLGCDGCEDWFHGTCVNIPESYNDLT-----------VQYFCPKC 165
Cdd:cd15606   1 YCICRKPFSG-FMLQCELCKDWFHSSCVPLPKSSSQKKggngsgqgakeLKFLCPLC 56

PHD finger found in mixed lineage leukemia 5 (MLL5); MLL5 is a histone methyltransferase that plays a key role in hematopoiesis, spermatogenesis and cell cycle progression. It contains a single plant homeodomain (PHD) finger followed by a catalytic SET domain. MLL5 can be recruited to E2F1-responsive promoters to stimulate H3K4 trimethylation and transcriptional activation by binding to the cell cycle regulator host cell factor (HCF-1), thereby facilitating the cell cycle G1 to S phase transition. It is also involved in mitotic fidelity and genomic integrity by modulating the stability of the chromosomal passenger complex (CPC) via the interaction with Borealin. Moreover, MLL5 is a component of a complex associated with retinoic acid receptor that requires GlcN Acylation of its SET domain in order to activate its histone lysine methyltransferase activity. It also participates in the camptothecin (CPT)-induced p53 activation. Furthermore, MLL5 indirectly regulates H3K4 methylation, represses cyclin A2 (CycA) expression, and promotes myogenic differentiation.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|
gi 19075291 121 CICQKPDDGSWMLGCDGCEDWFHGTCV-----NIPESyndltvqYFCPKC 165
Cdd:cd15550   2 CICGFEHDDGFMICCDKCSVWQHGDCMgidreNIPDS-------YLCEQC 44

PHD finger found in lysine-specific demethylase PHF2; PHF2, also termed GRC5, or PHD finger protein 2, is a histone lysine demethylase ubiquitously expressed in various tissues. It contains a plant homeodomain (PHD) finger and a JmjC domain and plays an important role in adipogenesis. The PHD finger domain can recognize trimethylated histone H3 lysine 4 (H3K4me3). PHF2 also has dimethylated histone H3 lysine 9(H3K9me2) demethylase activity and acts as a coactivator of several metabolism-related transcription factors. Moreover, it can demethylate ARID5B and further forms a complex with demethylated ARD5B to bind the promoter regions of target genes. The overexpression of PHF2 is involved in the progression of esophageal squamous cell carcinoma (ESCC).

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*..
gi 19075291 120 YCICQKPDDGS-WMLGCDGCEDWFHGTCVNIPESYNDLTVQYFCPKC 165
Cdd:cd15641   1 YCICRLPYDVTrFMIECDACKDWFHGSCVGVEEEEAPDIDIYHCPNC 47

PHD finger found in histone lysine demethylase PHF8; PHF8, also termed PHD finger protein 8, or KDM7B, is a monomethylated histone H4 lysine 20 (H4K20me1) demethylase that transcriptionally regulates many cell cycle genes. It also preferentially acts on H3K9me2 and H3K9me1. PHF8 is modulated by CDC20-containing anaphase-promoting complex (APC (cdc20)) and plays an important role in the G2/M transition. It acts as a critical molecular sensor for mediating retinoic acid (RA) treatment response in RAR alpha-fusion-induced leukemia. Moreover, PHF8 is essential for cytoskeleton dynamics and is associated with X-linked mental retardation. PHF8 contains an N-terminal plant homeodomain (PHD) finger followed by a JmjC domain. The PHD finger mediates binding to nucleosomes at active gene promoters and the JmjC domain catalyzes the demethylation of mono- or dimethyl-lysines.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*...
gi 19075291 119 LYCICQKPDDGS-WMLGCDGCEDWFHGTCVNIPESYNDLTVQYFCPKC 165
Cdd:cd15642   1 VYCLCRLPYDVTrFMIECDVCQDWFHGSCVGVEEEKAAEIDLYHCPNC 48

PHD finger found in the inhibitor of growth (ING) protein family; The ING family includes a group of tumor suppressors, ING1-5, which act as readers and writers of the histone epigenetic code, affecting DNA damage response, chromatin remodeling, cellular senescence, differentiation, cell cycle regulation and apoptosis. They may have a general role in mediating the cellular response to genotoxic stress through binding to and regulating the activities of histone acetyltransferase (HAT) and histone deacetylase (HDAC) chromatin remodeling complexes. All ING proteins contain an N-terminal ING domain and a C-terminal plant homeodomain (PHD) finger.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*....
gi 19075291 120 YCICQKPDDGSwMLGCDG--CE-DWFHGTCVNIPESYNDltvQYFCPKC 165
Cdd:cd15505   1 YCICNQVSYGE-MVACDNpnCPiEWFHFECVGLTAKPKG---KWYCPEC 45

PHD finger found in PHD finger protein 3 (PHF3); PHF3 is a human homolog of yeast protein bypass of Ess1 (Bye1), a nuclear protein with a domain resembling the central domain in the transcription elongation factor TFIIS. It is ubiquitously expressed in normal tissues including brain, but its expression is significantly reduced or lost in glioblastomas. PHF3 contains an N-terminal plant homeodomain (PHD) finger, a central RNA polymerase II (Pol II)-binding TFIIS-like domain (TLD) domain, and a C-terminal Spen paralogue and orthologue C-terminal (SPOC) domain.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*...
gi 19075291 122 ICQKPDDGSWMLGCDGCEDWFHGTCVNIP----ESYNDLTVQYFCPKC 165
Cdd:cd15638   4 FCKKPHGNRFMVGCGRCDDWFHGDCVGLSlsqaQQMEEEDKEYVCVKC 51

PHD finger found in Arabidopsis thaliana PHD finger protein MALE MEIOCYTE DEATH 1 (MMD1), PHD finger protein MALE STERILITY 1 (MS1), and similar proteins; MMD1 is a plant homeodomain (PHD) finger protein expressed in male meiocytes. It is encoded by the gene DUET, which is required for male meiotic chromosome organization and progression. MMD1 has been implicated in the regulation of gene expression during meiosis. The mmd1 mutation triggers cell death in male meiocytes. MS1 is a nuclear transcriptional activator that is important for tapetal development and pollen wall biosynthesis. It contains a Leu zipper-like domain and a PHD finger motif, both of which are essential for its function.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*.
gi 19075291 121 CICQ-KPDDGSWMLGCDGCEDWFHGTCVNIPESYNDLTVqYFCPKC 165
Cdd:cd15556   2 CSCGtRDDDGERMIACDVCEVWQHTRCVGIADNEEPPDH-FLCRRC 46

PHD finger 2 found in Lysine-specific demethylase 5C (KDM5C) and 5D (KDM5D); The family includes KDM5C and KDM5D, both of which belong to the JARID subfamily within the JmjC proteins. KDM5C (also termed Histone demethylase JARID1C, Jumonji/ARIDdomain-containing protein 1C, SmcX, or Xe169) is a H3K4 trimethyl-histone demethylase that catalyzes demethylation of H3K4me3 and H3K4me2 to H3K4me1. It plays a role in neuronal survival and dendrite development. KDM5C defects are associated with X-linked mental retardation (XLMR). KDM5D (also termed Histocompatibility Y antigen (H-Y), Histone demethylase JARID1D, Jumonji/ARID domain-containing protein 1D, or SmcY) is a male-specific antigen that shows a demethylase activity specific for di- and tri-methylated histone H3K4 (H3K4me3 and H3K4me2), and has a male-specific function as a histone H3K4 demethylase by recruiting a meiosis-regulatory protein, MSH5, to condensed DNA. KDM5D directly interacts with a polycomb-like protein Ring6a/MBLR, and plays a role in regulation of transcriptional initiation through H3K4 demethylation. Both KDM5C and KDM5D contain the catalytic JmjC domain, JmjN, the BRIGHT domain, which is an AT-rich interacting domain (ARID), and a Cys5HisCys2 zinc finger, as well as two plant homeodomain (PHD) fingers. This model corresponds to the second PHD finger.

                        10        20        30
                ....*....|....*....|....*....|.
gi 19075291 121 CIC-QKPDDGswMLGCDGCEDWFHGTCVNIP 150
Cdd:cd15608   2 CVCgQPPRPG--MLRCHLCQDWFHGGCVSFP 30

PHD finger 2 found in lysine-specific demethylase 5B (KDM5B); KDM5B (also termed Cancer/testis antigen 31 (CT31), Histone demethylase JARID1B, Jumonji/ARID domain-containing protein 1B (JARID1B), retinoblastoma-binding protein 2 homolog 1 (RBP2-H1 or RBBP2H1A), or PLU-1) is a member of the JARID subfamily within the JmjC proteins. It has a restricted expression pattern in the testis, ovary, and transiently in the mammary gland of the pregnant female and has been shown to be upregulated in breast cancer, prostate cancer, and lung cancer, suggesting a potential role in tumorigenesis. KDM5B acts as a histone demethylase that catalyzes the removal of trimethylation of lysine 4 on histone H3 (H3K4me3), induced by polychlorinated biphenyls (PCBs). It also mediates demethylation of H3K4me2 and H3K4me1. Moreover, KDM5B functions as a negative regulator of hematopoietic stem cell (HSC) self-renewal and progenitor cell activity. KDM5B has also been shown to interact with the DNA binding transcription factors BF-1 and PAX9, as well as TIEG1/KLF10 (transforming growth factor-beta inducible early gene-1/Kruppel-like transcription factor 10), and possibly function as a transcriptional corepressor. KDM5B contains the catalytic JmjC domain, JmjN, the BRIGHT domain, which is an AT-rich interacting domain (ARID), and a Cys5HisCys2 zinc finger, as well as three plant homeodomain (PHD) fingers. This model corresponds to the second PHD finger.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*
gi 19075291 121 CICQKPDDGSwMLGCDGCEDWFHGTCVNIPESYNDLTVqYFCPKC 165
Cdd:cd15607   2 CVCQKAPMAP-MIQCELCRDAFHSGCVTAPSDPQGPQA-WLCPQC 44

PHD finger 3 found in Schizosaccharomyces pombe Lid2 complex component Lid2p and similar proteins; Lid2p is a trimethyl H3K4 (H3K4me3) demethylase responsible for H3K4 hypomethylation in heterochromatin. It interacts with the histone lysine-9 methyltransferase, Clr4, through the Dos1/Clr8-Rik1 complex, and mediates H3K9 methylation and small RNA production. It also acts cooperatively with the histone modification enzymes Set1 and Lsd1, and plays an essential role in cross-talk between H3K4 and H3K9 methylation in euchromatin. Lid2p contains a JmjC domain, three PHD fingers and a JmjN domain. The family corresponds to the third PHD finger.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*.
gi 19075291 121 CICQKPDD-GSWMLGCDGCEDWFHGTCVNIPESYNDLTVQYFCPKC 165
Cdd:cd15520   2 CGCGEGFNiADRMIFCDRCERTVHLDCVGLSDRIVDSPSEFFCPEC 47

PHD domain found in Saccharomyces cerevisiae bypass of ESS1 protein 1 (Bye1p), the E3 Sumo Ligase SIZ1, and similar proteins; Yeast Bye1p is a nuclear transcription factor with a domain resembling the central domain in the transcription elongation factor TFIIS and plays an inhibitory role during transcription elongation. It functions as a multicopy suppressor of Ess1, a peptidyl-prolyl cis-trans isomerase involved in proline isomerization of the C-terminal domain (CTD) of RNA polymerase II (Pol II). Bye1p contains an N-terminal plant homeodomain (PHD) finger, a central Pol II-binding TFIIS-like domain (TLD) domain, and a C-terminal Spen paralogue and orthologue C-terminal (SPOC) domain. The PHD domain binds to a histone H3 tail peptide containing trimethylated lysine 4 (H3K4me3). The TLD domain is responsible for the association with chromatin. Plant SIZ1 protein is a SUMO (small ubiquitin-related modifier) E3 ligase that facilitates conjugation of SUMO to substrate target proteins (sumoylation) and belongs to the protein inhibitor of activated STAT (PIAS) protein family. It negatively regulates abscisic acid (ABA) signaling, which is dependent on the bZIP transcripton factor ABI5. It also modulates plant growth and plays a role in drought stress response likely through the regulation of gene expression. SIZ1 functions as a floral repressor that not only represses the salicylic acid (SA)-dependent pathway, but also promotes FLOWERING LOCUS C (FLC) expression by repressing FLOWERING LOCUS D (FLD) activity through sumoylation. SIZ1 contains a PHD finger, which specifically binds methylated histone H3 at lysine 4 and arginine 2.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*....
gi 19075291 121 CICQKPDDGSWMLGCDGCEDWFHGTCVNIPESYND----LTVQYFCPKC 165
Cdd:cd15570   2 CPCGSSMEDGSMIQCEGCKTWQHMDCVLIPDKPADglpeLPSKFYCELC 50

PHD finger found in PHD finger proteins PHF13 and PHF23; PHF13, also termed survival time-associated PHD finger protein in ovarian cancer 1 (SPOC1), is a novel plant homeodomain (PHD) finger-containing protein that shows strong expression in spermatogonia and ovarian cancer cells, modulates chromatin structure and mitotic chromosome condensation, and is important for proper cell division. It is also required for spermatogonial stem cell differentiation and sustained spermatogenesis. The overexpression of PHF13 associates with unresectable carcinomas and shorter survival in ovarian cancer. PHF23, also termed PHD-containing protein JUNE-1, is a hypothetical protein with a PHD finger. It is encoded by gene PHF23 that acts as a candidate fusion partner for the nucleoporin gene NUP98. The NUP98-PHF23 fusion results from a cryptic translocation t(11;17)(p15;p13) in acute myeloid leukemia (AML).

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*
gi 19075291 121 CICQKPDDGSWMLGCDGCEDWFHGTCVNIPESYndLTVQYFCPKC 165
Cdd:cd15546   2 CFCGKPFAGRPMIECSECLTWIHLSCAKIRKNN--VPEVFICQKC 44

PHD finger found in inhibitor of growth protein 3 (ING3) and similar proteins; ING3, also termed p47ING3, is one member of the inhibitor of growth (ING) family of type II tumor suppressors. It is ubiquitously expressed and has been implicated in transcription modulation, cell cycle control, and the induction of apoptosis. It is an important subunit of human NuA4 histone acetyltransferase complex, which regulates the acetylation of histones H2A and H4. Moreover, ING3 promotes ultraviolet (UV)-induced apoptosis through the Fas/caspase-8-dependent pathway in melanoma cells. It physically interacts with subunits of E3 ligase Skp1-Cullin-F-boxprotein complex (SCF complex) and is degraded by the SCF (F-box protein S-phase kinase-associated protein 2, Skp2)-mediated ubiquitin-proteasome system. It also acts as a suppression factor during tumorigenesis and progression of hepatocellular carcinoma (HCC). ING3 contains an N-terminal ING domain and a C-terminal plant homeodomain (PHD) finger.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*....
gi 19075291 120 YCICQKPDDGSwMLGCDG--CE-DWFHGTCVNIPESYNDltvQYFCPKC 165
Cdd:cd15585   1 YCICNQVSYGE-MVGCDNddCPiEWFHYGCVGLTEAPKG---KWYCPQC 45

PHD finger found in bromodomain adjacent to zinc finger domain protein 1A (BAZ1A); BAZ1A, also termed ATP-dependent chromatin-remodeling protein, or ATP-utilizing chromatin assembly and remodeling factor 1 (ACF1), or CHRAC subunit ACF1, or Williams syndrome transcription factor-related chromatin-remodeling factor 180 (WCRF180), or WALp1, is a subunit of the conserved imitation switch (ISWI)-family ATP-dependent chromatin assembly and remodeling factor (ACF)/chromatin accessibility complex (CHRAC) chromatin remodeling complex, which is required for DNA replication through heterochromatin. It alters the remodeling properties of the ATPase motor protein sucrose nonfermenting-2 homolog (SNF2H). Moreover, BAZ1A and its complexes play important roles in DNA double-strand break (DSB) repair. It is essential for averting improper gene expression during spermatogenesis. It also regulates transcriptional repression of vitamin D3 receptor-regulated genes. BAZ1A contains a WAC motif, a DDT domain, BAZ 1 and BAZ 2 motifs, a WAKZ (WSTF/Acf1/KIAA0314/ZK783.4) motif, a plant homeodomain (PHD) finger, and a bromodomain.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*....
gi 19075291 122 ICQKPDDGSWMLGCDGCEDWFHGTCVN-----IPESyndltvQYFCPKC 165
Cdd:cd15627   4 ICRRKGDAEKMLLCDGCDRGHHMYCLRpplkkVPEG------DWFCPDC 46

PHD finger 1 found in Schizosaccharomyces pombe Lid2 complex component Lid2p and similar proteins; Lid2p is a trimethyl H3K4 (H3K4me3) demethylase responsible for H3K4 hypomethylation in heterochromatin. It interacts with the histone lysine-9 methyltransferase, Clr4, through the Dos1/Clr8-Rik1 complex, and mediates H3K9 methylation and small RNA production. It also acts cooperatively with the histone modification enzymes Set1 and Lsd1 and plays an essential role in cross-talk between H3K4 and H3K9 methylation in euchromatin. Lid2p contains a JmjC domain, three PHD fingers and a JmjN domain. This model corresponds to the first PHD finger.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|...
gi 19075291 123 CQKPDDGSWMLGCDGCEDWFHGTCVNIPESYNdLTVQYFCPKC 165
Cdd:cd15519   5 CGLDDNEGEVLLCDGCDAEYHTSCLDPPLGEI-PPGTWFCPSC 46

PHD finger found in bromodomain adjacent to zinc finger domain protein 2A (BAZ2A) and 2B (BAZ2B); BAZ2A, also termed transcription termination factor I-interacting protein 5 (TTF-I-interacting protein 5, or Tip5), or WALp3, is an epigenetic regulator. It has been implicated in epigenetic rRNA gene silencing, as the large subunit of the SNF2h-containing chromatin-remodeling complex NoRC that induces nucleosome sliding in an ATP- and histone H4 tail-dependent fashion. BAZ2A has also been shown to be broadly overexpressed in prostate cancer, to regulate numerous protein-coding genes and to cooperate with EZH2 (enhancer of zeste homolog 2) to maintain epigenetic silencing at genes repressed in prostate cancer metastasis. Its overexpression is tightly associated with a prostate cancer subtype displaying CpG island methylator phenotype (CIMP) in tumors and with prostate cancer recurrence in patients. BAZ2B, also termed WALp4, is a bromodomain-containing protein whose biological role is still elusive. It shows high sequence similarly with BAZ2A. Both BAZ2A and BAZ2B contain a TAM (TIP5/ARBP/MBD) domain, a DDT domain, four AT-hooks, BAZ 1 and BAZ 2 motifs, a WAKZ (WSTF/Acf1/KIAA0314/ZK783.4) motif, a plant homeodomain (PHD) finger, and a bromodomain. BAZ2B also harbors an extra Apolipophorin-III like domain in its N-terminal region.

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gi 19075291 120 YC-ICQKPDDGSWMLGCDGCEDWFHGTCV-----NIPESyndltvQYFCPKC 165
Cdd:cd15545   1 SCqICRSGDNEDQLLLCDGCDRGYHTYCFkpkmtNVPEG------DWFCPEC 46

PHD finger 1 found in Drosophila melanogaster protein little imaginal discs (Lid) and similar proteins; Drosophila melanogaster Lid, also termed Retinoblastoma-binding protein 2 homolog, is identified genetically as a trithorax group (trxG) protein that is a Drosophila homolog of the human protein JARID1A/kdm5A, a member of the JARID subfamily within the JmjC proteins. Lid functions as a JmjC-dependent trimethyl histone H3K4 (H3K4me3) demethylase, which is required for dMyc-induced cell growth. It positively regulates Hox gene expression in S2 cells. Lid contains the catalytic JmjC domain, JmjN, the BRIGHT domain, which is an AT-rich interacting domain (ARID), and a Cys5HisCys2 zinc finger, as well as three plant homeodomain (PHD) fingers. This model corresponds to the first PHD finger of Lid.

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gi 19075291 122 ICQKPDDGSWMLGCDGCEDWFHGTCVnIPESYNDLTVQYFCPKC 165
Cdd:cd15605   4 TCGRGDGEESMLLCDGCDDSYHTFCL-LPPLSEVPKGDWRCPKC 46

PHD finger found in inhibitor of growth protein 4 (ING4); ING4, also termed p29ING4, is one member of the inhibitor of growth (ING) family of type II tumor suppressors. It acts as an E3 ubiquitin ligase to induce ubiquitination of the p65 subunit of NF-kappaB and inhibit the transactivation of NF-kappaB target genes. It also induces apoptosis through a p53 dependent pathway, including increasing p53 acetylation, inhibiting Mdm2-mediated degradation of p53 and enhancing the expression of p53 responsive genes both at the transcriptional and post-translational levels. Moreover, ING4 can inhibit the translation of proto-oncogene MYC by interacting with AUF1. It also regulates other transcription factors, such as hypoxia-inducible factor (HIF). In addition, ING4 associates with histone acetyltransferase (HAT) complexes containing MOZ (monocytic leukemia zinc finger protein)/MORF (MOZ-related factor) and HBO1, and further directs the MOZ/MORF and HBO1 complexes to chromatin. ING4 contains an N-terminal ING histone-binding domain and a C-terminal plant homeodomain (PHD) finger.

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gi 19075291 120 YCICQKPDDGSwMLGCDGCE---DWFHGTCVNIPESYNDltvQYFCPKCTE 167
Cdd:cd15684   2 YCLCHQVSYGE-MIGCDNPDcsiEWFHFACVGLTTKPRG---KWFCPRCSQ 48

PHD finger found in ubiquitin-like PHD and RING finger domain-containing protein UHRF1 and UHRF2; UHRF1 is a unique chromatin effector protein that integrates the recognition of both histone PTMs and DNA methylation. It is essential for cell proliferation and plays a critical role in the development and progression of many human carcinomas, such as laryngeal squamous cell carcinoma (LSCC), gastric cancer (GC), esophageal squamous cell carcinoma (ESCC), colorectal cancer, prostate cancer, and breast cancer. UHRF1 acts as a transcriptional repressor through its binding to histone H3 when it is unmodified at Arg2. Its overexpression in human lung fibroblasts results in downregulation of expression of the tumour suppressor pRB. It also plays a role in transcriptional repression of the cell cycle regulator p21. Moreover, UHRF1-dependent repression of transcription factors can facilitate the G1-S transition. It interacts with Tat-interacting protein of 60 kDa (TIP60) and induces degradation-independent ubiquitination of TIP60. It is also an N-methylpurine DNA glycosylase (MPG)-interacting protein that binds MPG in a p53 status-independent manner in the DNA base excision repair (BER) pathway. In addition, UHRF1 functions as an epigenetic regulator that is important for multiple aspects of epigenetic regulation, including maintenance of DNA methylation patterns and recognition of various histone modifications. UHRF2 was originally identified as a ubiquitin ligase acting as a small ubiquitin-like modifier (SUMO) E3 ligase that enhances zinc finger protein 131 (ZNF131) SUMOylation but does not enhance ZNF131 ubiquitination. It also ubiquitinates PCNP, a PEST-containing nuclear protein. Moreover, UHRF2 functions as a nuclear protein involved in cell-cycle regulation and has been implicated in tumorigenesis. It interacts with cyclins, CDKs, p53, pRB, PCNA, HDAC1, DNMTs, G9a, methylated histone H3 lysine 9, and methylated DNA. It interacts with the cyclin E-CDK2 complex, ubiquitinates cyclins D1 and E1, induces G1 arrest, and is involved in the G1/S transition regulation. Furthermore, UHRF2 is a direct transcriptional target of the transcription factor E2F-1 in the induction of apoptosis. It recruits HDAC1 and binds to methyl-CpG. UHRF2 also participates in the maturation of Hepatitis B virus (HBV) by interacting with the HBV core protein and promoting its degradation. Both UHRF1 and UHRF2 contain an N-terminal ubiquitin-like domain (UBL), a tandem Tudor domain (TTD), a plant homeodomain (PHD) finger, a SET- and RING-associated (SRA) domain, and a C-terminal RING finger.

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gi 19075291 121 CICQKPDDGSWMLGCDGCEDWFHGTCVNIPESYNDLTVQYFCPKC 165
Cdd:cd15525   3 HVCGGKQDPEKQLLCDECDMAYHLYCLDPPLTSLPDDDEWYCPDC 47