3ubm

<StructureSection load='3ubm' size='340' side='right' caption='[[3ubm]], [[Resolution|resolution]] 1.99&Aring;' scene=''>

<table><tr><td colspan='2'>[[3ubm]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Acetobacter_aceti Acetobacter aceti]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3UBM OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3UBM FirstGlance]. <br>

</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=COA:COENZYME+A'>COA</scene><br>

<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">uctB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=435 Acetobacter aceti])</td></tr>

<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3ubm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ubm OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3ubm RCSB], [http://www.ebi.ac.uk/pdbsum/3ubm PDBsum]</span></td></tr>

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== Publication Abstract from PubMed ==

Bacterial formyl-CoA:oxalate CoA-transferase (FCOCT) and oxalyl-CoA decarboxylase work in tandem to perform a proton-consuming decarboxylation that has been suggested to have a role in generalized acid resistance. FCOCT is the product of uctB in the acidophilic acetic acid bacterium Acetobacter aceti. As expected for an acid-resistance factor, UctB remains folded at the low pH values encountered in the A. aceti cytoplasm. A comparison of crystal structures of FCOCTs and related proteins revealed few features in UctB that would distinguish it from non-acidophilic proteins and thereby account for its acid stability properties, other than a strikingly featureless electrostatic surface. The apparently neutral surface is a result of a "speckled" charge decoration, in which charged surface residues are surrounded by compensating charges but do not form salt bridges. A quantitative comparison among orthologues identified a pattern of residue substitution in UctB that may be a consequence of selection for protein stability by constant exposure to acetic acid. We suggest that this surface charge pattern, which is a distinctive feature of A. aceti proteins, creates a stabilizing electrostatic network without stiffening the protein or compromising protein-solvent interactions.

 

Formyl-coenzyme A (CoA): Oxalate CoA-transferase from the acidophile Acetobacter aceti has a distinctive electrostatic surface and inherent acid stability.,Mullins EA, Starks CM, Francois JA, Sael L, Kihara D, Kappock TJ Protein Sci. 2012 Feb 28. doi: 10.1002/pro.2054. PMID:22374910<ref>PMID:22374910</ref>

 

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

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<references/>

[[Category: Kappock, T J.]]

[[Category: Mullins, E A.]]

[[Category: Starks, C M.]]

[[Category: Transferase]]