PMID- 10097092 OWN - NLM STAT- MEDLINE DCOM- 19990512 LR - 20230331 IS - 0027-8424 (Print) IS - 1091-6490 (Electronic) IS - 0027-8424 (Linking) VI - 96 IP - 7 DP - 1999 Mar 30 TI - Factor-specific modulation of CREB-binding protein acetyltransferase activity. PG - 3652-7 AB - CREB-binding proteins (CBP) and p300 are essential transcriptional coactivators for a large number of regulated DNA-binding transcription factors, including CREB, nuclear receptors, and STATs. CBP and p300 function in part by mediating the assembly of multiprotein complexes that contain additional cofactors such as p300/CBP interacting protein (p/CIP), a member of the p160/SRC family of coactivators, and the p300/CBP associated factor p/CAF. In addition to serving as molecular scaffolds, CBP and p300 each possess intrinsic acetyltransferase activities that are required for their function as coactivators. Here we report that the adenovirus E1A protein inhibits the acetyltransferase activity of CBP on binding to the C/H3 domain, whereas binding of CREB, or a CREB/E1A fusion protein to the KIX domain, fails to inhibit CBP acetyltransferase activity. Surprisingly, p/CIP can either inhibit or stimulate CBP acetyltransferase activity depending on the specific substrate evaluated and the functional domains present in the p/CIP protein. While the CBP interaction domain of p/CIP inhibits acetylation of histones H3, H4, or high mobility group by CBP, it enhances acetylation of other substrates, such as Pit-1. These observations suggest that the acetyltransferase activities of CBP/p300 and p/CAF can be differentially modulated by factors binding to distinct regions of CBP/p300. Because these interactions are likely to result in differential effects on the coactivator functions of CBP/p300 for different classes of transcription factors, regulation of CBP/p300 acetyltransferase activity may represent a mechanism for integration of diverse signaling pathways. FAU - Perissi, V AU - Perissi V AD - Howard Hughes Medical Institute, University of California at San Diego, La Jolla, CA 92093-0648, USA. FAU - Dasen, J S AU - Dasen JS FAU - Kurokawa, R AU - Kurokawa R FAU - Wang, Z AU - Wang Z FAU - Korzus, E AU - Korzus E FAU - Rose, D W AU - Rose DW FAU - Glass, C K AU - Glass CK FAU - Rosenfeld, M G AU - Rosenfeld MG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - 0 (Adenovirus E1A Proteins) RN - 0 (Cyclic AMP Response Element-Binding Protein) RN - 0 (Histones) RN - 0 (Nuclear Proteins) RN - 0 (Recombinant Fusion Proteins) RN - 0 (Recombinant Proteins) RN - 0 (Trans-Activators) RN - EC 2.3.1.- (Acetyltransferases) RN - EC 2.3.1.48 (CREB-Binding Protein) RN - EC 2.3.1.48 (Crebbp protein, rat) SB - IM MH - Acetylation MH - Acetyltransferases/*metabolism MH - Adenovirus E1A Proteins/*metabolism MH - Animals MH - Binding Sites MH - CREB-Binding Protein MH - Cell Line MH - Cyclic AMP Response Element-Binding Protein/metabolism MH - Fibroblasts MH - Histones/metabolism MH - Kinetics MH - Nuclear Proteins/*metabolism MH - Rats MH - Recombinant Fusion Proteins/biosynthesis MH - Recombinant Proteins/metabolism MH - Substrate Specificity MH - Trans-Activators/*metabolism MH - Transfection PMC - PMC22349 EDAT- 1999/03/31 00:00 MHDA- 1999/03/31 00:01 PMCR- 1999/09/30 CRDT- 1999/03/31 00:00 PHST- 1999/03/31 00:00 [pubmed] PHST- 1999/03/31 00:01 [medline] PHST- 1999/03/31 00:00 [entrez] PHST- 1999/09/30 00:00 [pmc-release] AID - 0472 [pii] AID - 10.1073/pnas.96.7.3652 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 1999 Mar 30;96(7):3652-7. doi: 10.1073/pnas.96.7.3652.