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Conserved domains on  [gi|6323124|ref|NP_013196|]
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Ioc2p [Saccharomyces cerevisiae S288C]

Protein Classification

PHD finger domain-containing protein( domain architecture ID 366290)

PHD (plant homeodomain) finger domain-containing protein

Gene Ontology:  GO:0008270|GO:0005515
PubMed:  16297627|21514168

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
PHD_SF super family cl22851
PHD finger superfamily; The PHD finger superfamily includes a canonical plant homeodomain (PHD) ...
556-584 1.57e-03

PHD finger superfamily; The PHD finger superfamily includes a canonical plant homeodomain (PHD) finger typically characterized as Cys4HisCys3, and a non-canonical extended PHD finger, characterized as Cys2HisCys5HisCys2His. Variations include the RAG2 PHD finger characterized by Cys3His2Cys2His and the PHD finger 5 found in nuclear receptor-binding SET domain-containing proteins characterized by Cys4HisCys2His. The PHD finger is also termed LAP (leukemia-associated protein) motif or TTC (trithorax consensus) domain. Single or multiple copies of PHD fingers have been found in a variety of eukaryotic proteins involved in the control of gene transcription and chromatin dynamics. PHD fingers can recognize the unmodified and modified histone H3 tail, and some have been found to interact with non-histone proteins. They also function as epigenome readers controlling gene expression through molecular recruitment of multi-protein complexes of chromatin regulators and transcription factors. The PHD finger domain SF is structurally similar to the RING and FYVE_like superfamilies.


The actual alignment was detected with superfamily member cd15550:

Pssm-ID: 473978 [Multi-domain]  Cd Length: 44  Bit Score: 36.91  E-value: 1.57e-03
                        10        20
                ....*....|....*....|....*....
gi 6323124  556 ITEDTETDLFnnrpLICCDHCYRWQHWEC 584
Cdd:cd15550   3 ICGFEHDDGF----MICCDKCSVWQHGDC 27
 
Name Accession Description Interval E-value
PHD_MLL5 cd15550
PHD finger found in mixed lineage leukemia 5 (MLL5); MLL5 is a histone methyltransferase that ...
556-584 1.57e-03

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.


Pssm-ID: 277025 [Multi-domain]  Cd Length: 44  Bit Score: 36.91  E-value: 1.57e-03
                        10        20
                ....*....|....*....|....*....
gi 6323124  556 ITEDTETDLFnnrpLICCDHCYRWQHWEC 584
Cdd:cd15550   3 ICGFEHDDGF----MICCDKCSVWQHGDC 27
PHD smart00249
PHD zinc finger; The plant homeodomain (PHD) finger is a C4HC3 zinc-finger-like motif found in ...
570-584 8.81e-03

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.


Pssm-ID: 214584 [Multi-domain]  Cd Length: 47  Bit Score: 34.88  E-value: 8.81e-03
                           10
                   ....*....|....*
gi 6323124     570 LICCDHCYRWQHWEC 584
Cdd:smart00249  14 LLQCDGCDRWYHQTC 28
 
Name Accession Description Interval E-value
PHD_MLL5 cd15550
PHD finger found in mixed lineage leukemia 5 (MLL5); MLL5 is a histone methyltransferase that ...
556-584 1.57e-03

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.


Pssm-ID: 277025 [Multi-domain]  Cd Length: 44  Bit Score: 36.91  E-value: 1.57e-03
                        10        20
                ....*....|....*....|....*....
gi 6323124  556 ITEDTETDLFnnrpLICCDHCYRWQHWEC 584
Cdd:cd15550   3 ICGFEHDDGF----MICCDKCSVWQHGDC 27
PHD_PHF3_like cd15552
PHD finger found in PHD finger protein 3 (PHF3), and death-inducer obliterator variants Dido1, ...
566-584 4.01e-03

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.


Pssm-ID: 277027  Cd Length: 50  Bit Score: 35.84  E-value: 4.01e-03
                        10
                ....*....|....*....
gi 6323124  566 NNRPLICCDHCYRWQHWEC 584
Cdd:cd15552   9 NNRFMICCDRCEEWFHGDC 27
PHD smart00249
PHD zinc finger; The plant homeodomain (PHD) finger is a C4HC3 zinc-finger-like motif found in ...
570-584 8.81e-03

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.


Pssm-ID: 214584 [Multi-domain]  Cd Length: 47  Bit Score: 34.88  E-value: 8.81e-03
                           10
                   ....*....|....*
gi 6323124     570 LICCDHCYRWQHWEC 584
Cdd:smart00249  14 LLQCDGCDRWYHQTC 28
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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