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1i01

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[[Image:1i01.jpg|left|200px]]
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[[Image:1i01.png|left|200px]]
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==Overview==
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{{ABSTRACT_11669613}}
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The structure of beta-ketoacyl-[acyl carrier protein] reductase (FabG) from Escherichia coli was determined via the multiwavelength anomalous diffraction technique using a selenomethionine-labeled crystal containing 88 selenium sites in the asymmetric unit. The comparison of the E. coli FabG structure with the homologous Brassica napus FabG.NADP(+) binary complex reveals that cofactor binding causes a substantial conformational change in the protein. This conformational change puts all three active-site residues (Ser 138, Tyr 151, and Lys 155) into their active configurations and provides a structural mechanism for allosteric communication between the active sites in the homotetramer. FabG exhibits negative cooperative binding of NADPH, and this effect is enhanced by the presence of acyl carrier protein (ACP). NADPH binding also increases the affinity and decreases the maximum binding of ACP to FabG. Thus, unlike other members of the short-chain dehydrogenase/reductase superfamily, FabG undergoes a substantial conformational change upon cofactor binding that organizes the active-site triad and alters the affinity of the other substrate-binding sites in the tetrameric enzyme.
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==About this Structure==
==About this Structure==
1I01 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. The following page contains interesting information on the relation of 1I01 with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb90_1.html Fatty Acid Synthase]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1I01 OCA].
1I01 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. The following page contains interesting information on the relation of 1I01 with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb90_1.html Fatty Acid Synthase]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1I01 OCA].
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==Reference==
 
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Structure of beta-ketoacyl-[acyl carrier protein] reductase from Escherichia coli: negative cooperativity and its structural basis., Price AC, Zhang YM, Rock CO, White SW, Biochemistry. 2001 Oct 30;40(43):12772-81. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11669613 11669613]
 
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Fatty Acid Synthase]]
[[Category: Fatty Acid Synthase]]
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[[Category: White, S W.]]
[[Category: White, S W.]]
[[Category: Rossman fold]]
[[Category: Rossman fold]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 19:25:01 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Jun 26 17:31:34 2008''

Revision as of 14:31, 26 June 2008

Image:1i01.png

Template:STRUCTURE 1i01

CRYSTAL STRUCTURE OF BETA-KETOACYL [ACYL CARRIER PROTEIN] REDUCTASE FROM E. COLI.


Template:ABSTRACT 11669613

About this Structure

1I01 is a Single protein structure of sequence from Escherichia coli. The following page contains interesting information on the relation of 1I01 with [Fatty Acid Synthase]. Full crystallographic information is available from OCA.

Page seeded by OCA on Thu Jun 26 17:31:34 2008

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