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1hkl

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[[Image:1hkl.gif|left|200px]]
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{{Seed}}
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[[Image:1hkl.png|left|200px]]
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{{STRUCTURE_1hkl| PDB=1hkl | SCENE= }}
{{STRUCTURE_1hkl| PDB=1hkl | SCENE= }}
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'''FREE AND LIGANDED FORM OF AN ESTEROLYTIC CATALYTIC ANTIBODY'''
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===FREE AND LIGANDED FORM OF AN ESTEROLYTIC CATALYTIC ANTIBODY===
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==Overview==
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The crystal structure of the esterase catalytic antibody 48G7 has been determined in the presence of hapten at 2.0 A resolution and in the absence of hapten at 2.7 A resolution. The root-mean-square difference between the two structures is 0.6 A for the variable domain and 0.7 A for the constant domain. Comparison of the active site shows that no significant changes occur upon hapten binding as main-chain and side-chain displacements are negligible. Complex formation occurs as hapten fits into a pre-formed pocket about 10 A deep. Although 151 water molecules were modeled into the 48G7-hapten structure, none are bound in the active site. Comparison of the 48G7 structures with those of other published ester hydrolysis antibodies illustrates an emerging theme used by esterolytic antibodies in binding their (nitro-)phenyl haptens and in hydrolysing their cognate esters and carbonates: hapten is bound with the aryl end buried deep in the binding pocket, and the phosphonate moiety is responsible for the majority of the binding energy to the antibody-hapten interaction.
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The line below this paragraph, {{ABSTRACT_PUBMED_9159478}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 9159478 is the PubMed ID number.
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{{ABSTRACT_PUBMED_9159478}}
==About this Structure==
==About this Structure==
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[[Category: Fab]]
[[Category: Fab]]
[[Category: Immunoglobulin]]
[[Category: Immunoglobulin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 18:56:58 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 08:19:13 2008''

Revision as of 05:19, 1 July 2008

Image:1hkl.png

Template:STRUCTURE 1hkl

FREE AND LIGANDED FORM OF AN ESTEROLYTIC CATALYTIC ANTIBODY

Template:ABSTRACT PUBMED 9159478

About this Structure

1HKL is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Crystal structures of the free and liganded form of an esterolytic catalytic antibody., Wedemayer GJ, Wang LH, Patten PA, Schultz PG, Stevens RC, J Mol Biol. 1997 May 2;268(2):390-400. PMID:9159478

Page seeded by OCA on Tue Jul 1 08:19:13 2008

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