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1acb

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[[Image:1acb.gif|left|200px]]
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{{STRUCTURE_1acb| PDB=1acb | SCENE= }}
{{STRUCTURE_1acb| PDB=1acb | SCENE= }}
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'''CRYSTAL AND MOLECULAR STRUCTURE OF THE BOVINE ALPHA-CHYMOTRYPSIN-EGLIN C COMPLEX AT 2.0 ANGSTROMS RESOLUTION'''
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===CRYSTAL AND MOLECULAR STRUCTURE OF THE BOVINE ALPHA-CHYMOTRYPSIN-EGLIN C COMPLEX AT 2.0 ANGSTROMS RESOLUTION===
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==Overview==
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The crystal structure of the complex between bovine alpha-chymotrypsin and the leech (Hirudo medicinalis) protein proteinase inhibitor eglin c has been refined at 2.0 A resolution to a crystallographic R-factor of 0.167. The structure of the complex includes 2290 protein and 143 solvent atoms. Eglin c is bound to the cognate enzyme through interactions involving 11 residues of the inhibitor (sites P5-P4' in the reactive site loop, P10' and P23') and 17 residues from chymotrypsin. Binding of eglin c to the enzyme causes a contained hinge-bending movement around residues P4 and P4' of the inhibitor. The tertiary structure of chymotrypsin is little affected, with the exception of the 10-13 region, where an ordered structure for the polypeptide chain is observed. The overall binding mode is consistent with those found in other serine proteinase-protein-inhibitor complexes, including those from different inhibition families. Contained, but significant differences are observed in the establishment of intramolecular hydrogen bonds and polar interactions stabilizing the structure of the intact inhibitor, if the structure of eglin c in its complex with chymotrypsin is compared with that of other eglin c-serine proteinase complexes.
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(as it appears on PubMed at http://www.pubmed.gov), where 1583684 is the PubMed ID number.
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{{ABSTRACT_PUBMED_1583684}}
==About this Structure==
==About this Structure==
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[[Category: Pugliese, L.]]
[[Category: Pugliese, L.]]
[[Category: Schnebli, H P.]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 10:05:52 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 16:34:33 2008''

Revision as of 13:34, 30 June 2008

Image:1acb.png

Template:STRUCTURE 1acb

CRYSTAL AND MOLECULAR STRUCTURE OF THE BOVINE ALPHA-CHYMOTRYPSIN-EGLIN C COMPLEX AT 2.0 ANGSTROMS RESOLUTION

Template:ABSTRACT PUBMED 1583684

About this Structure

1ACB is a Protein complex structure. Full crystallographic information is available from OCA.

Reference

Crystal and molecular structure of the bovine alpha-chymotrypsin-eglin c complex at 2.0 A resolution., Frigerio F, Coda A, Pugliese L, Lionetti C, Menegatti E, Amiconi G, Schnebli HP, Ascenzi P, Bolognesi M, J Mol Biol. 1992 May 5;225(1):107-23. PMID:1583684

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