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1ys1

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[[Image:1ys1.gif|left|200px]]
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{{STRUCTURE_1ys1| PDB=1ys1 | SCENE= }}
{{STRUCTURE_1ys1| PDB=1ys1 | SCENE= }}
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'''Burkholderia cepacia lipase complexed with hexylphosphonic acid (R)-2-methyl-3-phenylpropyl ester'''
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===Burkholderia cepacia lipase complexed with hexylphosphonic acid (R)-2-methyl-3-phenylpropyl ester===
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==Overview==
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Synthetic chemists often exploit the high enantioselectivity of lipases to prepare pure enantiomers of primary alcohols, but the molecular basis for this enantioselectivity is unknown. The crystal structures of two phosphonate transition-state analogs bound to Burkholderia cepacia lipase reveal this molecular basis for a typical primary alcohol: 2-methyl-3-phenyl-1-propanol. The enantiomeric alcohol moieties adopt surprisingly similar orientations, with only subtle differences that make it difficult to predict how to alter enantioselectivity. These structures, along with a survey of previous structures of enzyme bound enantiomers, reveal that binding of enantiomers does not involve an exchange of two substituent positions as most researchers assumed. Instead, the enantiomers adopt mirror-image packing, where three of the four substituents at the stereocenter lie in similar positions. The fourth substituent, hydrogen, points in opposite directions.
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(as it appears on PubMed at http://www.pubmed.gov), where 15850979 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15850979}}
==About this Structure==
==About this Structure==
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[[Category: Ca2+ ion]]
[[Category: Ca2+ ion]]
[[Category: Cis peptide leu 234]]
[[Category: Cis peptide leu 234]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 16:42:40 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 17:05:29 2008''

Revision as of 14:05, 28 July 2008

Image:1ys1.png

Template:STRUCTURE 1ys1

Burkholderia cepacia lipase complexed with hexylphosphonic acid (R)-2-methyl-3-phenylpropyl ester

Template:ABSTRACT PUBMED 15850979

About this Structure

1YS1 is a Single protein structure of sequence from Burkholderia cepacia. Full crystallographic information is available from OCA.

Reference

Mirror-image packing in enantiomer discrimination molecular basis for the enantioselectivity of B.cepacia lipase toward 2-methyl-3-phenyl-1-propanol., Mezzetti A, Schrag JD, Cheong CS, Kazlauskas RJ, Chem Biol. 2005 Apr;12(4):427-37. PMID:15850979

Page seeded by OCA on Mon Jul 28 17:05:29 2008

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