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1e5m

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Revision as of 08:04, 13 December 2017

Beta ketoacyl acyl carrier protein synthase II (KASII) from Synechocystis sp.

Structural highlights

1e5m is a 1 chain structure with sequence from Aphanocapsa sp. (strain n-1). Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
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

[FABF_SYNY3] Catalyzes the condensation reaction of fatty acid synthesis by the addition to an acyl acceptor of two carbons from malonyl-ACP. Has a preference for short chain acid substrates.

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

Condensing enzymes, catalyzing the formation of carbon-carbon bonds in several biosynthetic pathways, have lately been recognized as potential drug targets against cancer and tuberculosis, as crucial for combinatorial biosynthesis of antibiotics and related compounds, and as determinants of plant oil composition. beta-Ketoacyl-ACP synthases (KAS) are the condensing enzymes present in the fatty acid biosynthesis pathway and are able to elongate an acyl chain bound to either co-enzyme A (CoA) or acyl carrier protein (ACP) with a two-carbon unit derived from malonyl-ACP. Several isoforms of KAS with different substrate specificity are present in most species. We have determined the crystal structure of KAS II from Synechocystis sp. PCC 6803 to 1.54 A resolution giving a detailed description of the active site geometry. In order to analyze the structure-function relationships in this class of enzymes in more detail, we have compared all presently known three-dimensional structures of condensing enzymes from different pathways. The comparison reveals that these enzymes can be divided into three structural and functional classes. This classification can be related to variations in the catalytic mechanism and the set of residues in the catalytic site, e.g. due to differences in the nature of the second substrate providing the two-carbon elongation unit. The variation in the acyl-carrier (ACP or CoA) specificity might also be connected to this classification and residues involved in ACP binding in structure class 2 can be suggested based on the comparison. Finally, the two subunits in the dimer contribute differently to formation of the substrate binding-pocket in the three structural classes.

The crystal structure of beta-ketoacyl-acyl carrier protein synthase II from Synechocystis sp. at 1.54 A resolution and its relationship to other condensing enzymes.,Moche M, Dehesh K, Edwards P, Lindqvist Y J Mol Biol. 2001 Jan 19;305(3):491-503. PMID:11152607^[1]

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

References

↑ Moche M, Dehesh K, Edwards P, Lindqvist Y. The crystal structure of beta-ketoacyl-acyl carrier protein synthase II from Synechocystis sp. at 1.54 A resolution and its relationship to other condensing enzymes. J Mol Biol. 2001 Jan 19;305(3):491-503. PMID:11152607 doi:10.1006/jmbi.2000.4272

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/1e5m"

@@ Line 1: / Line 1: @@
-==BETA KETOACYL ACYL CARRIER PROTEIN SYNTHASE II (KASII) FROM SYNECHOCYSTIS SP.==
+==Beta ketoacyl acyl carrier protein synthase II (KASII) from Synechocystis sp.==
 <StructureSection load='1e5m' size='340' side='right' caption='[[1e5m]], [[Resolution|resolution]] 1.54&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1e5m]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Aphanocapsa_sp._(strain_n-1) Aphanocapsa sp. (strain n-1)]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1E5M OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1E5M FirstGlance]. <br>
 </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=1e5m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1e5m OCA], [http://pdbe.org/1e5m PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1e5m RCSB], [http://www.ebi.ac.uk/pdbsum/1e5m 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=1e5m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1e5m OCA], [http://pdbe.org/1e5m PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1e5m RCSB], [http://www.ebi.ac.uk/pdbsum/1e5m PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1e5m ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 12: / Line 13: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/e5/1e5m_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/e5/1e5m_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 27: / Line 28: @@
 </div>
 <div class="pdbe-citations 1e5m" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Acyl carrier protein synthase|Acyl carrier protein synthase]]
 == References ==
 <references/>

1e5m

From Proteopedia

Revision as of 08:04, 13 December 2017

Beta ketoacyl acyl carrier protein synthase II (KASII) from Synechocystis sp.

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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