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MNAT1

Protein FULL name:

CDK-activating kinase assembly factor MAT1 isoform 1 [Homo sapiens].


MNAT1 (Homo sapiens) is product of expression of MNAT1 gene.


MNAT1 is involved in:

DDS in Homo sapiens
     


Keywords:



FUNCTION: Stabilizes the cyclin H-CDK7 complex to form a functional CDK-activating kinase (CAK) enzymatic complex. CAK activates the cyclin-associated kinases CDK1, CDK2, CDK4 and CDK6 by threonine phosphorylation. CAK complexed to the core-TFIIH basal transcription factor activates RNA polymerase II by serine phosphorylation of the repetitive C-terminus domain (CTD) of its large subunit (POLR2A), allowing its escape from the promoter and elongation of the transcripts. Involved in cell cycle control and in RNA transcription by RNA polymerase II.

SUBUNIT: Associates primarily with CDK7 and cyclin H to form the CAK complex. CAK can further associate with the core-TFIIH to form the TFIIH basal transcription factor.

INTERACTION: P51946:CCNH; NbExp=1; IntAct=EBI-716139, EBI-741406;

SUBCELLULAR LOCATION: Nucleus.

TISSUE SPECIFICITY: Highest levels in colon and testis. Moderate levels are present thymus, prostate, ovary, and small intestine. The lowest levels are found in spleen and leukocytes.

SIMILARITY: Contains 1 RING-type zinc finger.

SIMILARITY: Contains 1 UIM (ubiquitin-interacting motif) repeat.

WEB RESOURCE: Name=NIEHS-SNPs; [LINK]


This protein can be a part of a given complexes:
NCBI GenPept GI number(s): 4505225
Species: Homo sapiens

Links to other databases:

Database ID Link
Uniprot P51948 P51948
PFAM: - P51948 (Link - using uniprot id)
InterPro: - P51948 (Link - using uniprot id)
CATH: - -
SCOP: - -
PDB: - -


Protein sequence:
MDDQGCPRCKTTKYRNPSLKLMVNVCGHTLCESCVDLLFVRGAGNCPECG
TPLRKSNFRVQLFEDPTVDKEVEIRKKVLKIYNKREEDFPSLREYNDFLE
EVEEIVFNLTNNVDLDNTKKKMEIYQKENKDVIQKNKLKLTREQEELEEA
LEVERQENEQRRLFIQKEEQLQQILKRKNKQAFLDELESSDLPVALLLAQ
HKDRSTQLEMQLEKPKPVKPVTFSTGIKMGQHISLAPIHKLEEALYEYQP
LQIETYGPHVPELEMLGRLGYLNHVRAASPQDLAGGYTSSLACHRALQDA
FSGLFWQPS

MNAT1 (Homo sapiens) belongs to following protein families:
References:

Title Authors Journal
In vitro assembly of a functional human CDK7-cyclin H complex requires MAT1, a novel 36 kDa RING finger protein. Tassan JP, Jaquenoud M, Fry AM, Frutiger S, Hughes GJ, Nigg EA EMBO J Nov. 15, 1995
Molecular cloning of CDK7-associated human MAT1, a cyclin-dependent kinase-activating kinase (CAK) assembly factor. Yee A, Nichols MA, Wu L, Hall FL, Kobayashi R, Xiong Y Cancer Res Dec. 15, 1995
Immunoaffinity purification and functional characterization of human transcription factor IIH and RNA polymerase II from clonal cell lines that conditionally express epitope-tagged subunits of the multiprotein complexes. Kershnar E, Wu SY, Chiang CM J Biol Chem Dec. 18, 1998
Reconstitution of the transcription factor TFIIH: assignment of functions for the three enzymatic subunits, XPB, XPD, and cdk7. Tirode F, Busso D, Coin F, Egly JM Mol Cell Feb. 1, 1999
Solution structure of the N-terminal domain of the human TFIIH MAT1 subunit: new insights into the RING finger family. Gervais V, Busso D, Wasielewski E, Poterszman A, Egly JM, Thierry JC, Kieffer B J Biol Chem March 9, 2001
The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J Genome Res Oct. 1, 2004
Kinase-selective enrichment enables quantitative phosphoproteomics of the kinome across the cell cycle. Daub H, Olsen JV, Bairlein M, Gnad F, Oppermann FS, Korner R, Greff Z, Keri G, Stemmann O, Mann M Mol Cell Aug. 8, 2008
Lys-N and trypsin cover complementary parts of the phosphoproteome in a refined SCX-based approach. Gauci S, Helbig AO, Slijper M, Krijgsveld J, Heck AJ, Mohammed S Anal Chem June 1, 2009
Large-scale proteomics analysis of the human kinome. Oppermann FS, Gnad F, Olsen JV, Hornberger R, Greff Z, Keri G, Mann M, Daub H Mol Cell Proteomics July 1, 2009


Last modification of this entry: Oct. 13, 2010.

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