2l8r

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[[Image:2l8r.png|left|200px]]
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==Solution structure of human protein C6orf130 in complex with ADP-ribose==
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<StructureSection load='2l8r' size='340' side='right' caption='[[2l8r]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
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== Structural highlights ==
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[[2l8r]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2L8R OCA]. <br>
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<b>Related:</b> [[2jyc|2jyc]], [[2lgr|2lgr]]<br>
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<b>Activity:</b> <span class='plainlinks'>[http://en.wikipedia.org/wiki/Glucokinase Glucokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.2 2.7.1.2] </span><br>
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== Publication Abstract from PubMed ==
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Post-translational modification of proteins/histones by lysine acylation has profound effects on the physiological function of modified proteins. Deacylation by NAD(+)-dependent sirtuin reactions yields as a product O-acyl-ADP-ribose, which has been implicated as a signaling molecule in modulating cellular processes. Macrodomain-containing proteins are reported to bind NAD(+)-derived metabolites. Here, we describe the structure and function of an orphan macrodomain protein, human C6orf130. This unique 17-kDa protein is a stand-alone macrodomain protein that occupies a distinct branch in the phylogenic tree. We demonstrate that C6orf130 catalyzes the efficient deacylation of O-acetyl-ADP-ribose, O-propionyl-ADP-ribose, and O-butyryl-ADP-ribose to produce ADP-ribose (ADPr) and acetate, propionate, and butyrate, respectively. Using NMR spectroscopy, we solved the structure of C6orf130 in the presence and absence of ADPr. The structures showed a canonical fold with a deep ligand (ADPr)-binding cleft. Structural comparisons of apo-C6orf130 and the ADPr-C6orf130 complex revealed fluctuations of the beta(5)-alpha(4) loop that covers the bound ADPr, suggesting that the beta(5)-alpha(4) loop functions as a gate to sequester substrate and offer flexibility to accommodate alternative substrates. The ADPr-C6orf130 complex identified amino acid residues involved in substrate binding and suggested residues that function in catalysis. Site-specific mutagenesis and steady-state kinetic analyses revealed two critical catalytic residues, Ser-35 and Asp-125. We propose a catalytic mechanism for deacylation of O-acyl-ADP-ribose by C6orf130 and discuss the biological implications in the context of reversible protein acylation at lysine residues.
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Orphan Macrodomain Protein (Human C6orf130) Is an O-Acyl-ADP-ribose Deacylase: SOLUTION STRUCTURE AND CATALYTIC PROPERTIES.,Peterson FC, Chen D, Lytle BL, Rossi MN, Ahel I, Denu JM, Volkman BF J Biol Chem. 2011 Oct 14;286(41):35955-65. Epub 2011 Aug 17. PMID:21849506<ref>PMID:21849506</ref>
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The line below this paragraph, containing "STRUCTURE_2l8r", creates the "Structure Box" on the page.
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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or leave the SCENE parameter empty for the default display.
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{{STRUCTURE_2l8r| PDB=2l8r | SCENE= }}
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===Solution structure of human protein C6orf130 in complex with ADP-ribose===
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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== References ==
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<references/>
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The line below this paragraph, {{ABSTRACT_PUBMED_21849506}}, adds the Publication Abstract to the page
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</StructureSection>
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(as it appears on PubMed at http://www.pubmed.gov), where 21849506 is the PubMed ID number.
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{{ABSTRACT_PUBMED_21849506}}
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==About this Structure==
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[[2l8r]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2L8R OCA].
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==Reference==
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<ref group="xtra">PMID:021849506</ref><references group="xtra"/>
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: CESG, Center for Eukaryotic Structural Genomics.]]
[[Category: CESG, Center for Eukaryotic Structural Genomics.]]

Revision as of 08:35, 30 April 2014

Solution structure of human protein C6orf130 in complex with ADP-ribose

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