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1ma3
From Proteopedia
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| - | [[Image:1ma3.gif|left|200px]] | + | [[Image:1ma3.gif|left|200px]] |
| - | + | ||
| - | '''Structure of a Sir2 enzyme bound to an acetylated p53 peptide''' | + | {{Structure |
| + | |PDB= 1ma3 |SIZE=350|CAPTION= <scene name='initialview01'>1ma3</scene>, resolution 2.0Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene> and <scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC ACID'>MES</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= SIR2-Af2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2234 Archaeoglobus fulgidus]) | ||
| + | }} | ||
| + | |||
| + | '''Structure of a Sir2 enzyme bound to an acetylated p53 peptide''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1MA3 is a [ | + | 1MA3 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Archaeoglobus_fulgidus Archaeoglobus fulgidus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MA3 OCA]. |
==Reference== | ==Reference== | ||
| - | Structure of a Sir2 enzyme bound to an acetylated p53 peptide., Avalos JL, Celic I, Muhammad S, Cosgrove MS, Boeke JD, Wolberger C, Mol Cell. 2002 Sep;10(3):523-35. PMID:[http:// | + | Structure of a Sir2 enzyme bound to an acetylated p53 peptide., Avalos JL, Celic I, Muhammad S, Cosgrove MS, Boeke JD, Wolberger C, Mol Cell. 2002 Sep;10(3):523-35. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12408821 12408821] |
[[Category: Archaeoglobus fulgidus]] | [[Category: Archaeoglobus fulgidus]] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
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[[Category: enzyme-substrate complex]] | [[Category: enzyme-substrate complex]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:40:53 2008'' |
Revision as of 10:40, 20 March 2008
| |||||||
| , resolution 2.0Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | and | ||||||
| Gene: | SIR2-Af2 (Archaeoglobus fulgidus) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Structure of a Sir2 enzyme bound to an acetylated p53 peptide
Contents |
Overview
Sir2 proteins are NAD(+)-dependent protein deacetylases that play key roles in transcriptional regulation, DNA repair, and life span regulation. The structure of an archaeal Sir2 enzyme, Sir2-Af2, bound to an acetylated p53 peptide reveals that the substrate binds in a cleft in the enzyme, forming an enzyme-substrate beta sheet with two flanking strands in Sir2-Af2. The acetyl-lysine inserts into a conserved hydrophobic tunnel that contains the active site histidine. Comparison with other structures of Sir2 enzymes suggests that the apoenzyme undergoes a conformational change upon substrate binding. Based on the Sir2-Af2 substrate complex structure, mutations were made in the other A. fulgidus sirtuin, Sir2-Af1, that increased its affinity for the p53 peptide.
Disease
Known diseases associated with this structure: Adrenal cortical carcinoma OMIM:[191170], Breast cancer OMIM:[191170], Colorectal cancer OMIM:[191170], Hepatocellular carcinoma OMIM:[191170], Histiocytoma OMIM:[191170], Li-Fraumeni syndrome OMIM:[191170], Multiple malignancy syndrome OMIM:[191170], Nasopharyngeal carcinoma OMIM:[191170], Osteosarcoma OMIM:[191170], Pancreatic cancer OMIM:[191170], Thyroid carcinoma OMIM:[191170]
About this Structure
1MA3 is a Protein complex structure of sequences from Archaeoglobus fulgidus. Full crystallographic information is available from OCA.
Reference
Structure of a Sir2 enzyme bound to an acetylated p53 peptide., Avalos JL, Celic I, Muhammad S, Cosgrove MS, Boeke JD, Wolberger C, Mol Cell. 2002 Sep;10(3):523-35. PMID:12408821
Page seeded by OCA on Thu Mar 20 12:40:53 2008
