» Articles » PMID: 12640139

Coactivator-dependent Acetylation Stabilizes Members of the SREBP Family of Transcription Factors

Overview
Journal Mol Cell Biol
Specialty Cell Biology
Date 2003 Mar 18
PMID 12640139
Citations 107
Authors
Affiliations
Soon will be listed here.
Abstract

Members of the SREBP family of transcription factors control cholesterol and lipid homeostasis and play important roles during adipocyte differentiation. The transcriptional activity of SREBPs is dependent on the coactivators p300 and CBP. We now present evidence that SREBPs are acetylated by the intrinsic acetyltransferase activity of p300 and CBP. In SREBP1a, the acetylated lysine residue resides in the DNA-binding domain of the protein. Coexpression with p300 dramatically increases the expression of both SREBP1a and SREBP2, and this effect is dependent on the acetyltransferase activity of p300, indicating that acetylation of SREBPs regulates their stability. Indeed, acetylation or mutation of the acetylated lysine residue in SREBP1a stabilizes the protein. We demonstrate that the acetylated residue in SREBP1a is also targeted by ubiquitination and that acetylation inhibits this process. Thus, our studies define acetylation-dependent stabilization of transcription factors as a novel mechanism for coactivators to regulate gene expression.

Citing Articles

SLC13A2 promotes hepatocyte metabolic remodeling and liver regeneration by enhancing de novo cholesterol biosynthesis.

Shi L, Chen H, Zhang Y, An D, Qin M, Yu W EMBO J. 2025; 44(5):1442-1463.

PMID: 39824985 PMC: 11876347. DOI: 10.1038/s44318-025-00362-y.


Dual Inhibition of CDK4/6 and CDK7 Suppresses Triple-Negative Breast Cancer Progression via Epigenetic Modulation of SREBP1-Regulated Cholesterol Metabolism.

Yang Y, Liao J, Pan Z, Meng J, Zhang L, Shi W Adv Sci (Weinh). 2024; 12(5):e2413103.

PMID: 39656925 PMC: 11791979. DOI: 10.1002/advs.202413103.


Roles of posttranslational modifications in lipid metabolism and cancer progression.

Feng T, Zhang H, Zhou Y, Zhu Y, Shi S, Li K Biomark Res. 2024; 12(1):141.

PMID: 39551780 PMC: 11571667. DOI: 10.1186/s40364-024-00681-y.


Identification of Potential New Genes Related to the SREBP Pathway in .

Venegas M, Duran A, Campusano S, Barahona S, Sepulveda D, Baeza M Biomolecules. 2024; 14(7).

PMID: 39062491 PMC: 11274570. DOI: 10.3390/biom14070778.


Calorie restriction and calorie-restriction mimetics activate chaperone-mediated autophagy.

Jafari M, Macho-Gonzalez A, Diaz A, Lindenau K, Santiago-Fernandez O, Zeng M Proc Natl Acad Sci U S A. 2024; 121(26):e2317945121.

PMID: 38889154 PMC: 11214046. DOI: 10.1073/pnas.2317945121.


References
1.
Foretz M, Guichard C, Ferre P, Foufelle F . Sterol regulatory element binding protein-1c is a major mediator of insulin action on the hepatic expression of glucokinase and lipogenesis-related genes. Proc Natl Acad Sci U S A. 1999; 96(22):12737-42. PMC: 23076. DOI: 10.1073/pnas.96.22.12737. View

2.
Naar A, Beaurang P, Robinson K, Oliner J, Avizonis D, Scheek S . Chromatin, TAFs, and a novel multiprotein coactivator are required for synergistic activation by Sp1 and SREBP-1a in vitro. Genes Dev. 1998; 12(19):3020-31. PMC: 317191. DOI: 10.1101/gad.12.19.3020. View

3.
Sartorelli V, Puri P, Hamamori Y, Ogryzko V, Chung G, Nakatani Y . Acetylation of MyoD directed by PCAF is necessary for the execution of the muscle program. Mol Cell. 2000; 4(5):725-34. DOI: 10.1016/s1097-2765(00)80383-4. View

4.
Suzuki T, Kimura A, Nagai R, Horikoshi M . Regulation of interaction of the acetyltransferase region of p300 and the DNA-binding domain of Sp1 on and through DNA binding. Genes Cells. 2000; 5(1):29-41. DOI: 10.1046/j.1365-2443.2000.00302.x. View

5.
Cardinaux J, Notis J, Zhang Q, Vo N, Craig J, Fass D . Recruitment of CREB binding protein is sufficient for CREB-mediated gene activation. Mol Cell Biol. 2000; 20(5):1546-52. PMC: 85336. DOI: 10.1128/MCB.20.5.1546-1552.2000. View