Reviewed,
UniProtKB/Swiss-Prot Q96RN5 (MED15_HUMAN)
Last modified
July 7, 2009.
Version 78.
History...
Clusters with 100%,
90%,
50% identity |
Documents (5) |
Third-party data |
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Names and origin
| Protein names | Recommended name: Mediator of RNA polymerase II transcription subunit 15 Alternative name(s): Mediator complex subunit 15 Positive cofactor 2 glutamine/Q-rich-associated protein Short name=PC2 glutamine/Q-rich-associated protein TPA-inducible gene 1 protein Short name=TIG-1 Activator-recruited cofactor 105 kDa component Short name=ARC105 CTG repeat protein 7a Trinucleotide repeat-containing gene 7 protein | ||||
| Gene names |
| ||||
| Organism | Homo sapiens (Human) [Complete proteome] | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
Protein attributes
| Sequence length | 788 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is not processed. |
| Protein existence | Evidence at protein level. |
General annotation (Comments)
| Function | Component of the Mediator complex, a coactivator involved in the regulated transcription of nearly all RNA polymerase II-dependent genes. Mediator functions as a bridge to convey information from gene-specific regulatory proteins to the basal RNA polymerase II transcription machinery. Mediator is recruited to promoters by direct interactions with regulatory proteins and serves as a scaffold for the assembly of a functional preinitiation complex with RNA polymerase II and the general transcription factors. Required for cholesterol-dependent gene regulation. Positively regulates the Nodal signaling pathway. Ref.8 Ref.11 Ref.12 |
| Subunit structure | Component of the Mediator complex, which is composed of MED1, MED4, MED6, MED7, MED8, MED9, MED10, MED11, MED12, MED13, MED13L, MED14, MED15, MED16, MED17, MED18, MED19, MED20, MED21, MED22, MED23, MED24, MED25, MED26, MED27, MED29, MED30, MED31, CCNC, CDK8 and CDC2L6/CDK11. The MED12, MED13, CCNC and CDK8 subunits form a distinct module termed the CDK8 module. Mediator containing the CDK8 module is less active than Mediator lacking this module in supporting transcriptional activation. Individual preparations of the Mediator complex lacking one or more distinct subunits have been variously termed ARC, CRSP, DRIP, PC2, SMCC and TRAP. Interacts with SMAD2, SMAD3, SREBF1 and SREBF2. Ref.8 Ref.12 |
| Subcellular location | |
| Tissue specificity | Expressed in all tissues examined, including heart, brain, lung, spleen, thymus, pancreas, blood leukocyte and placenta. However, the level of expression varied, with highest expression in the placenta and peripheral blood and lowest in the pancreas and kidney. Ref.1 |
| Induction | By 12-O-tetradecanoylphorbol-13-acetate (TPA). Ref.1 |
| Polymorphism | The poly-Gln region from amino acids 235-262 of PCQAP is polymorphic. There are from 15 to 18 repeats in the Italian population. |
| Sequence similarities | Belongs to the Mediator complex subunit 15 family. |
| Sequence caution | The sequence AAC12944.1 differs from that shown. Reason: Frameshift at positions 13, 600 and 749. The sequence BAB85034.1 differs from that shown. Reason: Miscellaneous discrepancy. Several sequencing errors. |
Ontologies
| Keywords | |
|---|---|
| Biological process | Transcription Transcription regulation |
| Cellular component | Cytoplasm Nucleus |
| Coding sequence diversity | Alternative splicing Polymorphism Triplet repeat expansion |
| Molecular function | Activator |
| PTM | Phosphoprotein |
| Technical term | 3D-structure Complete proteome Direct protein sequencing |
| Gene Ontology (GO) | |
| Biological process | regulation of transcription from RNA polymerase II promoter Inferred from electronic annotation. Source: InterPro transcriptionInferred from electronic annotation. Source: UniProtKB-KW |
| Cellular component | Golgi apparatus Inferred from direct assay. Source: HPA mediator complexInferred from electronic annotation. Source: InterPro |
| Molecular function | RNA polymerase II transcription mediator activity Inferred from electronic annotation. Source: InterPro protein binding Ref.12Inferred from physical interaction. Source: IntAct |
| Complete GO annotation... | |
Binary interactions
With | Entry | #Exp. | IntAct | Notes |
|---|---|---|---|---|
| CREB1 | P16220 | 1 | EBI-394506,EBI-711855 | |
| MYB | P10242 | 1 | EBI-394506,EBI-298355 | |
| sbp-1 | Q9XX00 | 1 | EBI-394506,EBI-321652 | From a different organism. |
| SREBF1 | P36956-1 | 4 | EBI-394506,EBI-948328 |
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q96RN5-1) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 (identifier: Q96RN5-2) The sequence of this isoform differs from the canonical sequence as follows: 385-424: Missing. | ||||||
| Isoform 3 (identifier: Q96RN5-3) The sequence of this isoform differs from the canonical sequence as follows: 80-151: DPMNALQSLTGGPAAGAAGIGMPPRGPGQSLGGMGSLGAMGQPMSLSGQPPPGTSGMAPHSMAVVSTATPQT → A 385-424: Missing. | ||||||
| Note: No experimental confirmation available. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||||||||
Molecule processing | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 788 | 788 | Mediator of RNA polymerase II transcription subunit 15 | PRO_0000058264 | |||||||||||
Regions | |||||||||||||||
| Region | 9 – 73 | 65 | Interaction with SREBF1 | ||||||||||||
| Motif | 547 – 564 | 18 | Nuclear localization signal Potential | ||||||||||||
| Compositional bias | 161 – 174 | 14 | Poly-Gln | ||||||||||||
| Compositional bias | 178 – 193 | 16 | Poly-Gln | ||||||||||||
| Compositional bias | 205 – 218 | 14 | Poly-Gln | ||||||||||||
| Compositional bias | 226 – 239 | 14 | Poly-Gln | ||||||||||||
| Compositional bias | 243 – 262 | 20 | Poly-Gln | ||||||||||||
| Compositional bias | 266 – 515 | 250 | Pro-rich | ||||||||||||
| Compositional bias | 360 – 367 | 8 | Poly-Gln | ||||||||||||
| Compositional bias | 449 – 456 | 8 | Poly-Pro | ||||||||||||
| Compositional bias | 602 – 611 | 10 | Poly-Pro | ||||||||||||
Amino acid modifications | |||||||||||||||
| Modified residue | 603 | 1 | Phosphothreonine Ref.13 | ||||||||||||
Natural variations | |||||||||||||||
| Alternative sequence | 80 – 151 | 72 | DPMNA…ATPQT → A in isoform 3. | VSP_013024 | |||||||||||
| Alternative sequence | 385 – 424 | 40 | Missing in isoform 2 and isoform 3. | VSP_003922 | |||||||||||
| Natural variant | 261 – 262 | 2 | Missing | VAR_013136 | |||||||||||
Experimental info | |||||||||||||||
| Mutagenesis | 42 | 1 | E → A: Abrogates interaction with SREBF1. Ref.12 | ||||||||||||
| Mutagenesis | 58 | 1 | L → D: Abrogates interaction with SREBF1. Ref.12 | ||||||||||||
| Mutagenesis | 60 | 1 | A → D: Abrogates interaction with SREBF1. Ref.12 | ||||||||||||
| Sequence conflict | 12 | 1 | S → R in AAC12944. Ref.1 | ||||||||||||
| Sequence conflict | 116 | 1 | L → F in AAC12944. Ref.1 | ||||||||||||
| Sequence conflict | 154 | 1 | Q → H in BAC03446. Ref.3 | ||||||||||||
| Sequence conflict | 161 | 1 | Q → R in BAB85034. Ref.3 | ||||||||||||
| Sequence conflict | 185 – 186 | 2 | QQ → EL in AAB91443. Ref.6 | ||||||||||||
| Sequence conflict | 186 – 187 | 2 | Missing in CAG30423. Ref.4 | ||||||||||||
| Sequence conflict | 218 | 1 | Missing in CAG30423. Ref.4 | ||||||||||||
| Sequence conflict | 232 – 287 | 56 | Missing in BAB85034. Ref.3 | ||||||||||||
| Sequence conflict | 265 | 1 | Q → E in AAC12944. Ref.1 | ||||||||||||
| Sequence conflict | 265 | 1 | Q → E in AAB91443. Ref.6 | ||||||||||||
| Sequence conflict | 572 – 573 | 2 | IL → GI in AAB91443. Ref.6 | ||||||||||||
| Sequence conflict | 685 | 1 | L → V in BAB85034. Ref.3 | ||||||||||||
Secondary structure | |||||||||||||||
Helix Strand Turn | |||||||||||||||
| Helix | 13 – 30 | 18 | |||||||||||||
| Helix | 38 – 48 | 11 | |||||||||||||
| Helix | 52 – 71 | 20 | |||||||||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "A novel glutamine-rich putative transcriptional adaptor protein (TIG-1), preferentially expressed in placental and bone-marrow tissues." Abraham S., Solomon W.B. Gene 255:389-400(2000) [PubMed: 11024300] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2), SUBCELLULAR LOCATION, TISSUE SPECIFICITY, INDUCTION. Tissue: Megakaryocyte and Placenta. |
| [2] | "Isolation and characterization of a novel gene from the DiGeorge chromosomal region that encodes for a mediator subunit." Berti L., Mittler G., Przemeck G.K.H., Stelzer G., Guenzler B., Amati F., Conti E., Dallapiccola B., Hrabe' de Angelis M., Novelli G., Meisterernst M. Genomics 74:320-332(2001) [PubMed: 11414760] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2), POLYMORPHISM OF POLY-GLN REGION. Tissue: Cervix carcinoma. |
| [3] | "Complete sequencing and characterization of 21,243 full-length human cDNAs." Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. Sugano S.Nat. Genet. 36:40-45(2004) [PubMed: 14702039] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 1 AND 2). Tissue: Hepatoma and Spleen. |
| [4] | "A genome annotation-driven approach to cloning the human ORFeome." Collins J.E., Wright C.L., Edwards C.A., Davis M.P., Grinham J.A., Cole C.G., Goward M.E., Aguado B., Mallya M., Mokrab Y., Huckle E.J., Beare D.M., Dunham I. Genome Biol. 5:RESEARCH84.1-RESEARCH84.11(2004) [PubMed: 15461802] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 3). |
| [5] | "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed: 15489334] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2), NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 405-788 (ISOFORM 1). Tissue: Eye and Kidney. |
| [6] | "cDNAs with long CAG trinucleotide repeats from human brain." Margolis R.L., Abraham M.R., Gatchell S.B., Li S.-H., Kidwai A.S., Breschel T.S., Stine O.C., Callahan C., McInnis M.G., Ross C.A. Hum. Genet. 100:114-122(1997) [PubMed: 9225980] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 185-573 (ISOFORM 2). Tissue: Brain cortex. |
| [7] | "Composite co-activator ARC mediates chromatin-directed transcriptional activation." Naeaer A.M., Beaurang P.A., Zhou S., Abraham S., Solomon W.B., Tjian R. Nature 398:828-832(1999) [PubMed: 10235267] [Abstract] Cited for: IDENTIFICATION IN ARC COMPLEX, PROTEIN SEQUENCE OF 39-48 AND 525-536. |
| [8] | "A component of the ARC/Mediator complex required for TGF beta/Nodal signalling." Kato Y., Habas R., Katsuyama Y., Naeaer A.M., He X. Nature 418:641-646(2002) [PubMed: 12167862] [Abstract] Cited for: FUNCTION, INTERACTION WITH SMAD1; SMAD2 AND SMAD3. |
| [9] | "A set of consensus mammalian mediator subunits identified by multidimensional protein identification technology." Sato S., Tomomori-Sato C., Parmely T.J., Florens L., Zybailov B., Swanson S.K., Banks C.A.S., Jin J., Cai Y., Washburn M.P., Conaway J.W., Conaway R.C. Mol. Cell 14:685-691(2004) [PubMed: 15175163] [Abstract] Cited for: IDENTIFICATION BY MASS SPECTROMETRY, IDENTIFICATION IN THE MEDIATOR COMPLEX. |
| [10] | "MED1/TRAP220 exists predominantly in a TRAP/Mediator subpopulation enriched in RNA polymerase II and is required for ER-mediated transcription." Zhang X., Krutchinsky A., Fukuda A., Chen W., Yamamura S., Chait B.T., Roeder R.G. Mol. Cell 19:89-100(2005) [PubMed: 15989967] [Abstract] Cited for: IDENTIFICATION BY MASS SPECTROMETRY, IDENTIFICATION IN THE MEDIATOR COMPLEX, ASSOCIATION OF THE MEDIATOR COMPLEX WITH RNA POLYMERASE II. |
| [11] | "Genome-wide location of the coactivator mediator: binding without activation and transient Cdk8 interaction on DNA." Andrau J.-C., van de Pasch L., Lijnzaad P., Bijma T., Koerkamp M.G., van de Peppel J., Werner M., Holstege F.C.P. Mol. Cell 22:179-192(2006) [PubMed: 16630888] [Abstract] Cited for: FUNCTION. |
| [12] | "An ARC/Mediator subunit required for SREBP control of cholesterol and lipid homeostasis." Yang F., Vought B.W., Satterlee J.S., Walker A.K., Jim Sun Z.-Y., Watts J.L., DeBeaumont R., Saito R.M., Hyberts S.G., Yang S., Macol C., Iyer L., Tjian R., van den Heuvel S., Hart A.C., Wagner G., Naeaer A.M. Nature 442:700-704(2006) [PubMed: 16799563] [Abstract] Cited for: FUNCTION, INTERACTION WITH SREBF1 AND SREBF2, MUTAGENESIS OF GLU-42; LEU-58 AND ALA-60. |
| [13] | "A quantitative atlas of mitotic phosphorylation." Dephoure N., Zhou C., Villen J., Beausoleil S.A., Bakalarski C.E., Elledge S.J., Gygi S.P. Proc. Natl. Acad. Sci. U.S.A. 105:10762-10767(2008) [PubMed: 18669648] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT THR-603, MASS SPECTROMETRY. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AF056191 mRNA. Translation: AAC12944.1. Frameshift. AF328769 mRNA. Translation: AAK58423.1. AK074268 mRNA. Translation: BAB85034.1. Sequence problems. AK090465 mRNA. Translation: BAC03446.1. Different initiation. CR456537 mRNA. Translation: CAG30423.1. BC007529 mRNA. Translation: AAH07529.1. BC013985 mRNA. Translation: AAH13985.1. U80745 mRNA. Translation: AAB91443.1. | |||||||||||||
| IPI | IPI00107693. IPI00220307. IPI00554734. | ||||||||||||
| RefSeq | NP_001003891.1. NP_056973.2. | ||||||||||||
| UniGene | Hs.517421 | ||||||||||||
3D structure databases | |||||||||||||
| |||||||||||||
| ModBase | Search... | ||||||||||||
Protein-protein interaction databases | |||||||||||||
| IntAct | Q96RN5. 18 interactions. | ||||||||||||
PTM databases | |||||||||||||
| PhosphoSite | Q96RN5. | ||||||||||||
Proteomic databases | |||||||||||||
| PRIDE | Q96RN5. | ||||||||||||
Genome annotation databases | |||||||||||||
| Ensembl | ENSG00000099917. Homo sapiens. [Contig view] | ||||||||||||
| GeneID | 51586. | ||||||||||||
| KEGG | hsa:51586. | ||||||||||||
| UCSC | uc002zsp.1. human. uc002zsq.1. human. | ||||||||||||
Organism-specific databases | |||||||||||||
| GeneCards | GC22P019191. | ||||||||||||
| H-InvDB | HIX0016260. HIX0030455. | ||||||||||||
| HGNC | HGNC:14248. MED15. | ||||||||||||
| HPA | HPA003179. | ||||||||||||
| MIM | 607372. gene. | ||||||||||||
| PharmGKB | PA33088. | ||||||||||||
| GenAtlas | Search... | ||||||||||||
Phylogenomic databases | |||||||||||||
| HOVERGEN | Q96RN5. | ||||||||||||
| OMA | Q96RN5. PGQMLYT. | ||||||||||||
Enzyme and pathway databases | |||||||||||||
| Pathway_Interaction_DB | smad2_3nuclearpathway. Regulation of nuclear SMAD2/3 signaling. | ||||||||||||
| Reactome | REACT_71. Gene Expression. | ||||||||||||
Gene expression databases | |||||||||||||
| ArrayExpress | Q96RN5. | ||||||||||||
| Bgee | Q96RN5. | ||||||||||||
| CleanEx | HS_MED15. | ||||||||||||
| GermOnline | ENSG00000099917. Homo sapiens. | ||||||||||||
Family and domain databases | |||||||||||||
| InterPro | IPR019087. Mediator_Med15_met. [Graphical view] | ||||||||||||
| Pfam | PF09606. ARC105_Med_act. 1 hit. [Graphical view] | ||||||||||||
| ProtoNet | Search... | ||||||||||||
Other Resources | |||||||||||||
| NextBio | 55423. | ||||||||||||
| SOURCE | Search... | ||||||||||||
Entry information
| Entry name | MED15_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q96RN5 Secondary accession number(s): O15413 Q9P1T3 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation project | HPI (Human Proteome Initiative) | ||||||||
Relevant documents
| Human chromosome 22 Human chromosome 22: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| PDB cross-references Index of Protein Data Bank (PDB) cross-references |
| SIMILARITY comments Index of protein domains and families |

Clusters with


