3kov

From Proteopedia

(Difference between revisions)

Revision as of 08:38, 1 November 2017

Structure of MEF2A bound to DNA reveals a completely folded MADS-box/MEF2 domain that recognizes DNA and recruits transcription co-factors

Structural highlights

3kov is a 8 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	MEF2A, MEF2 (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[MEF2A_HUMAN] Defects in MEF2A are a cause of coronary artery disease, autosomal dominant, type 1 (ADCAD1) [MIM:608320]. A common heart disease characterized by reduced or absent blood flow in one or more of the arteries that encircle and supply the heart. Its most important complication is acute myocardial infarction.

Function

[MEF2A_HUMAN] Transcriptional activator which binds specifically to the MEF2 element, 5'-YTA[AT](4)TAR-3', found in numerous muscle-specific genes. Also involved in the activation of numerous growth factor- and stress-induced genes. Mediates cellular functions not only in skeletal and cardiac muscle development, but also in neuronal differentiation and survival. Plays diverse roles in the control of cell growth, survival and apoptosis via p38 MAPK signaling in muscle-specific and/or growth factor-related transcription. In cerebellar granule neurons, phosphorylated and sumoylated MEF2A represses transcription of NUR77 promoting synaptic differentiation.^[1] ^[2] ^[3] ^[4] ^[5] ^[6] ^[7]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Myocyte enhancer factor 2 (MEF2) regulates specific gene expression in diverse developmental programs and adaptive responses. MEF2 recognizes DNA and interacts with transcription cofactors through a highly conserved N-terminal domain referred to as the MADS-box/MEF2 domain. Here we present the crystal structure of the MADS-box/MEF2 domain of MEF2A bound to DNA. In contrast to previous structural studies showing that the MEF2 domain of MEF2A is partially unstructured, the present study reveals that the MEF2 domain participates with the MADS-box in both dimerization and DNA binding as a single domain. The sequence divergence at and immediately following the C-terminal end of the MEF2 domain may allow different MEF2 dimers to recognize different DNA sequences in the flanking regions. The current structure also suggests that the ligand-binding pocket previously observed in the Cabin1-MEF2B-DNA complex and the HDAC9 (histone deacetylase 9)-MEF2B-DNA complex is not induced by cofactor binding but rather preformed by intrinsic folding. However, the structure of the ligand-binding pocket does undergo subtle but significant conformational changes upon cofactor binding. On the basis of these observations, we generated a homology model of MEF2 bound to a myocardin family protein, MASTR, that acts as a potent coactivator of MEF2-dependent gene expression. The model shows excellent shape and chemical complementarity at the binding interface and is consistent with existing mutagenesis data. The apo structure presented here can also serve as a target for virtual screening and soaking studies of small molecules that can modulate the function of MEF2 as research tools and therapeutic leads.

Structure of the MADS-box/MEF2 domain of MEF2A bound to DNA and its implication for myocardin recruitment.,Wu Y, Dey R, Han A, Jayathilaka N, Philips M, Ye J, Chen L J Mol Biol. 2010 Mar 26;397(2):520-33. Epub 2010 Feb 2. PMID:20132824^[8]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Zhao M, New L, Kravchenko VV, Kato Y, Gram H, di Padova F, Olson EN, Ulevitch RJ, Han J. Regulation of the MEF2 family of transcription factors by p38. Mol Cell Biol. 1999 Jan;19(1):21-30. PMID:9858528
↑ Okamoto S, Li Z, Ju C, Scholzke MN, Mathews E, Cui J, Salvesen GS, Bossy-Wetzel E, Lipton SA. Dominant-interfering forms of MEF2 generated by caspase cleavage contribute to NMDA-induced neuronal apoptosis. Proc Natl Acad Sci U S A. 2002 Mar 19;99(6):3974-9. PMID:11904443 doi:10.1073/pnas.022036399
↑ Gong X, Tang X, Wiedmann M, Wang X, Peng J, Zheng D, Blair LA, Marshall J, Mao Z. Cdk5-mediated inhibition of the protective effects of transcription factor MEF2 in neurotoxicity-induced apoptosis. Neuron. 2003 Apr 10;38(1):33-46. PMID:12691662
↑ Zhu B, Ramachandran B, Gulick T. Alternative pre-mRNA splicing governs expression of a conserved acidic transactivation domain in myocyte enhancer factor 2 factors of striated muscle and brain. J Biol Chem. 2005 Aug 5;280(31):28749-60. Epub 2005 Apr 15. PMID:15834131 doi:10.1074/jbc.M502491200
↑ Riquelme C, Barthel KK, Liu X. SUMO-1 modification of MEF2A regulates its transcriptional activity. J Cell Mol Med. 2006 Jan-Mar;10(1):132-44. PMID:16563226
↑ Hietakangas V, Anckar J, Blomster HA, Fujimoto M, Palvimo JJ, Nakai A, Sistonen L. PDSM, a motif for phosphorylation-dependent SUMO modification. Proc Natl Acad Sci U S A. 2006 Jan 3;103(1):45-50. Epub 2005 Dec 21. PMID:16371476 doi:10.1073/pnas.0503698102
↑ Shalizi A, Gaudilliere B, Yuan Z, Stegmuller J, Shirogane T, Ge Q, Tan Y, Schulman B, Harper JW, Bonni A. A calcium-regulated MEF2 sumoylation switch controls postsynaptic differentiation. Science. 2006 Feb 17;311(5763):1012-7. PMID:16484498 doi:10.1126/science.1122513
↑ Wu Y, Dey R, Han A, Jayathilaka N, Philips M, Ye J, Chen L. Structure of the MADS-box/MEF2 domain of MEF2A bound to DNA and its implication for myocardin recruitment. J Mol Biol. 2010 Mar 26;397(2):520-33. Epub 2010 Feb 2. PMID:20132824 doi:10.1016/j.jmb.2010.01.067

1 Structural highlights
2 Disease
3 Function
4 Evolutionary Conservation
5 Publication Abstract from PubMed
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3kov"

@@ Line 1: / Line 1: @@
 ==Structure of MEF2A bound to DNA reveals a completely folded MADS-box/MEF2 domain that recognizes DNA and recruits transcription co-factors==
 <StructureSection load='3kov' size='340' side='right' caption='[[3kov]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[3kov]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KOV OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3KOV FirstGlance]. <br>
 </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MEF2A, MEF2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3kov FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kov OCA], [http://pdbe.org/3kov PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3kov RCSB], [http://www.ebi.ac.uk/pdbsum/3kov PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3kov FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kov OCA], [http://pdbe.org/3kov PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3kov RCSB], [http://www.ebi.ac.uk/pdbsum/3kov PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3kov ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 41: / Line 42: @@
 [[Category: Wu, Y]]
 [[Category: Ye, J]]
+[[Category: Acetylation]]
 [[Category: Activator]]
+[[Category: Alternative splicing]]
 [[Category: Apoptosis]]
 [[Category: Developmental protein]]
@@ Line 58: / Line 61: @@
 [[Category: Transcription regulation]]
 [[Category: Transcription-dna complex]]
+[[Category: Ubl conjugation]]

3kov

From Proteopedia

Revision as of 08:38, 1 November 2017

Structure of MEF2A bound to DNA reveals a completely folded MADS-box/MEF2 domain that recognizes DNA and recruits transcription co-factors

Structural highlights

Disease

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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