1pvq

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{{STRUCTURE_1pvq| PDB=1pvq | SCENE= }}
{{STRUCTURE_1pvq| PDB=1pvq | SCENE= }}
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'''BASIS FOR A SWITCH IN SUBSTRATE SPECIFICITY: CRYSTAL STRUCTURE OF SELECTED VARIANT OF CRE SITE-SPECIFIC RECOMBINASE, LNSGG BOUND TO THE ENGINEERED RECOGNITION SITE LOXM7'''
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===BASIS FOR A SWITCH IN SUBSTRATE SPECIFICITY: CRYSTAL STRUCTURE OF SELECTED VARIANT OF CRE SITE-SPECIFIC RECOMBINASE, LNSGG BOUND TO THE ENGINEERED RECOGNITION SITE LOXM7===
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==Overview==
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The basis for the altered DNA specificities of two Cre recombinase variants, obtained by mutation and selection, was revealed by their cocrystal structures. The proteins share similar substitutions but differ in their preferences for the natural LoxP substrate and an engineered substrate that is inactive with wild-type Cre, LoxM7. One variant preferentially recombines LoxM7 and contacts the substituted bases through a hydrated network of novel interlocking protein-DNA contacts. The other variant recognizes both LoxP and LoxM7 utilizing the same DNA backbone contact but different base contacts, facilitated by an unexpected DNA shift. Assisted by water, novel interaction networks can arise from few protein substitutions, suggesting how new DNA binding specificities might evolve. The contributions of macromolecular plasticity and water networks in specific DNA recognition observed here present a challenge for predictive schemes.
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(as it appears on PubMed at http://www.pubmed.gov), where 14652076 is the PubMed ID number.
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{{ABSTRACT_PUBMED_14652076}}
==About this Structure==
==About this Structure==
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[[Category: Dna]]
[[Category: Dna]]
[[Category: Recombinase]]
[[Category: Recombinase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 05:32:28 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 04:18:10 2008''

Revision as of 01:18, 28 July 2008

Image:1pvq.png

Template:STRUCTURE 1pvq

BASIS FOR A SWITCH IN SUBSTRATE SPECIFICITY: CRYSTAL STRUCTURE OF SELECTED VARIANT OF CRE SITE-SPECIFIC RECOMBINASE, LNSGG BOUND TO THE ENGINEERED RECOGNITION SITE LOXM7

Template:ABSTRACT PUBMED 14652076

About this Structure

1PVQ is a Protein complex structure of sequences from Enterobacteria phage p1. Full crystallographic information is available from OCA.

Reference

A specificity switch in selected cre recombinase variants is mediated by macromolecular plasticity and water., Baldwin EP, Martin SS, Abel J, Gelato KA, Kim H, Schultz PG, Santoro SW, Chem Biol. 2003 Nov;10(11):1085-94. PMID:14652076

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