PMID- 10024883 OWN - NLM STAT- MEDLINE DCOM- 19990312 LR - 20190915 IS - 1097-2765 (Print) IS - 1097-2765 (Linking) VI - 3 IP - 1 DP - 1999 Jan TI - A novel human SRB/MED-containing cofactor complex, SMCC, involved in transcription regulation. PG - 97-108 AB - A novel human complex that can either repress activator-dependent transcription mediated by PC4, or, at limiting TFIIH, act synergistically with PC4 to enhance activator-dependent transcription has been purified. This complex contains homologs of a subset of yeast mediator/holoenzyme components (including SRB7, SRB10, SRB11, MED6, and RGR1), homologs of other yeast transcriptional regulatory factors (SOH1 and NUT2), and, significantly, some components (TRAP220, TRAP170/hRGR1, and TRAP100) of a human thyroid hormone receptor-associated coactivator complex. The complex shows direct activator interactions but, unlike yeast mediator, can act independently of the RNA polymerase II CTD. These findings demonstrate both positive and negative functional capabilities for the human complex, emphasize novel (CTD-independent) regulatory mechanisms, and link the complex to other human coactivator complexes. FAU - Gu, W AU - Gu W AD - Laboratory of Biochemistry and Molecular Biology, Rockefeller University, New York, New York 10021, USA. FAU - Malik, S AU - Malik S FAU - Ito, M AU - Ito M FAU - Yuan, C X AU - Yuan CX FAU - Fondell, J D AU - Fondell JD FAU - Zhang, X AU - Zhang X FAU - Martinez, E AU - Martinez E FAU - Qin, J AU - Qin J FAU - Roeder, R G AU - Roeder RG LA - eng SI - GENBANK/AF135802 PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Mol Cell JT - Molecular cell JID - 9802571 RN - 0 (Fungal Proteins) RN - 0 (IFRD2 protein, human) RN - 0 (Immediate-Early Proteins) RN - 0 (MED6 protein, S cerevisiae) RN - 0 (MED6 protein, human) RN - 0 (Mediator Complex) RN - 0 (Membrane Proteins) RN - 0 (NUT2 protein, S cerevisiae) RN - 0 (Nuclear Proteins) RN - 0 (RGR1 protein, S cerevisiae) RN - 0 (Repressor Proteins) RN - 0 (Saccharomyces cerevisiae Proteins) RN - 0 (Trans-Activators) RN - 0 (Transcription Factors) RN - 0 (Transcription Factors, TFII) SB - IM EIN - Mol Cell 1999 Apr;3(4):following 541 MH - Cloning, Molecular MH - Fungal Proteins/chemistry/genetics MH - Humans MH - Immediate-Early Proteins MH - Mediator Complex MH - Membrane Proteins MH - Molecular Sequence Data MH - Nuclear Proteins/chemistry/genetics MH - Repressor Proteins/chemistry/*genetics MH - Saccharomyces cerevisiae/genetics MH - *Saccharomyces cerevisiae Proteins MH - Sequence Analysis MH - Sequence Homology, Amino Acid MH - Trans-Activators/genetics MH - *Transcription Factors MH - Transcription Factors, TFII/chemistry/*genetics MH - Transcriptional Activation/genetics EDAT- 1999/02/20 00:00 MHDA- 1999/02/20 00:01 CRDT- 1999/02/20 00:00 PHST- 1999/02/20 00:00 [pubmed] PHST- 1999/02/20 00:01 [medline] PHST- 1999/02/20 00:00 [entrez] AID - S1097-2765(00)80178-1 [pii] AID - 10.1016/s1097-2765(00)80178-1 [doi] PST - ppublish SO - Mol Cell. 1999 Jan;3(1):97-108. doi: 10.1016/s1097-2765(00)80178-1.