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1hnh

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Revision as of 09:11, 10 January 2018

CRYSTAL STRUCTURE OF BETA-KETOACYL-ACP SYNTHASE III + DEGRADED FORM OF ACETYL-COA

Structural highlights

1hnh is a 1 chain structure with sequence from "bacillus_coli"_migula_1895 "bacillus coli" migula 1895. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:	,
Related:	1hn9, 1hnd, 1hnj, 1hnk
Activity:	[acyl-carrier-protein_synthase_I Beta-ketoacyl-[acyl-carrier-protein] synthase I], with EC number 2.3.1.41
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[FABH_ECOLI] Catalyzes the condensation reaction of fatty acid synthesis by the addition to an acyl acceptor of two carbons from malonyl-ACP. Catalyzes the first condensation reaction which initiates fatty acid synthesis and may therefore play a role in governing the total rate of fatty acid production. Possesses both acetoacetyl-ACP synthase and acetyl transacylase activities. Has some substrate specificity for acetyl-CoA. Its substrate specificity determines the biosynthesis of straight-chain of fatty acids instead of branched-chain.[HAMAP-Rule:MF_01815]

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

beta-Ketoacyl-acyl carrier protein synthase III (FabH) is a condensing enzyme that plays central roles in fatty acid biosynthesis. Three-dimensional structures of E. coli FabH in the presence and absence of ligands have been refined to 1.46 A resolution. The structures of improved accuracy revealed detailed interactions involved in ligand binding. These structures also provided new insights into the FabH mechanism, e.g. the possible role of a water or hydroxyl anion in Cys112 deprotonation. A structure of the apo enzyme uncovered large conformational changes in the active site, exemplified by the disordering of four essential loops (84-86, 146-152, 185-217 and 305-307) and the movement of catalytic residues (Cys112 and His244). The disordering of the loops leads to greater than 50 % reduction in the FabH dimer interface, suggesting a dynamic nature for an unusually large portion of the dimer interface. The existence of a large solvent-accessible channel in the dimer interface as well as two cis-peptides (cis-Pro88 and cis-Phe308) in two of the disordered loops may explain the observed structural instabilities.

Refined structures of beta-ketoacyl-acyl carrier protein synthase III.,Qiu X, Janson CA, Smith WW, Head M, Lonsdale J, Konstantinidis AK J Mol Biol. 2001 Mar 16;307(1):341-56. PMID:11243824^[1]

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

References

↑ Qiu X, Janson CA, Smith WW, Head M, Lonsdale J, Konstantinidis AK. Refined structures of beta-ketoacyl-acyl carrier protein synthase III. J Mol Biol. 2001 Mar 16;307(1):341-56. PMID:11243824 doi:10.1006/jmbi.2000.4457

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1hnh"

@@ Line 1: / Line 1: @@
 ==CRYSTAL STRUCTURE OF BETA-KETOACYL-ACP SYNTHASE III + DEGRADED FORM OF ACETYL-COA==
 <StructureSection load='1hnh' size='340' side='right' caption='[[1hnh]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
@@ Line 7: / Line 8: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1hn9|1hn9]], [[1hnd|1hnd]], [[1hnj|1hnj]], [[1hnk|1hnk]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Beta-ketoacyl-[acyl-carrier-protein]_synthase_I Beta-ketoacyl-[acyl-carrier-protein] synthase I], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.3.1.41 2.3.1.41] </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=1hnh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1hnh OCA], [http://pdbe.org/1hnh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1hnh RCSB], [http://www.ebi.ac.uk/pdbsum/1hnh 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=1hnh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1hnh OCA], [http://pdbe.org/1hnh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1hnh RCSB], [http://www.ebi.ac.uk/pdbsum/1hnh PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1hnh ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 15: / Line 16: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/hn/1hnh_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/hn/1hnh_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 30: / Line 31: @@
 </div>
 <div class="pdbe-citations 1hnh" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Acyl carrier protein synthase|Acyl carrier protein synthase]]
 == References ==
 <references/>

1hnh

From Proteopedia

Revision as of 09:11, 10 January 2018

CRYSTAL STRUCTURE OF BETA-KETOACYL-ACP SYNTHASE III + DEGRADED FORM OF ACETYL-COA

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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