1dtd

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{{STRUCTURE_1dtd| PDB=1dtd | SCENE= }}
{{STRUCTURE_1dtd| PDB=1dtd | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE COMPLEX BETWEEN THE LEECH CARBOXYPEPTIDASE INHIBITOR AND THE HUMAN CARBOXYPEPTIDASE A2 (LCI-CPA2)'''
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===CRYSTAL STRUCTURE OF THE COMPLEX BETWEEN THE LEECH CARBOXYPEPTIDASE INHIBITOR AND THE HUMAN CARBOXYPEPTIDASE A2 (LCI-CPA2)===
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==Overview==
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Leech carboxypeptidase inhibitor (LCI) is a novel protein inhibitor present in the medicinal leech Hirudo medicinalis. The structures of LCI free and bound to carboxypeptidase A2 (CPA2)have been determined by NMR and X-ray crystallography, respectively. The LCI structure defines a new protein motif that comprises a five-stranded antiparallel beta-sheet and one short alpha-helix. This structure is preserved in the complex with human CPA2 in the X-ray structure, where the contact regions between the inhibitor and the protease are defined. The C-terminal tail of LCI becomes rigid upon binding the protease as shown in the NMR relaxation studies, and it interacts with the carboxypeptidase in a substrate-like manner. The homology between the C-terminal tails of LCI and the potato carboxypeptidase inhibitor represents a striking example of convergent evolution dictated by the target protease. These new structures are of biotechnological interest since they could elucidate the control mechanism of metallo-carboxypeptidases and could be used as lead compounds for the search of fibrinolytic drugs.
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(as it appears on PubMed at http://www.pubmed.gov), where 10742178 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10742178}}
==About this Structure==
==About this Structure==
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[[Category: Carboxypeptidase a2]]
[[Category: Carboxypeptidase a2]]
[[Category: Leech carboxypeptidase inhibitor]]
[[Category: Leech carboxypeptidase inhibitor]]
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Revision as of 20:35, 30 June 2008

Image:1dtd.png

Template:STRUCTURE 1dtd

CRYSTAL STRUCTURE OF THE COMPLEX BETWEEN THE LEECH CARBOXYPEPTIDASE INHIBITOR AND THE HUMAN CARBOXYPEPTIDASE A2 (LCI-CPA2)

Template:ABSTRACT PUBMED 10742178

About this Structure

1DTD is a Protein complex structure of sequences from Hirudo medicinalis and Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure of a novel leech carboxypeptidase inhibitor determined free in solution and in complex with human carboxypeptidase A2., Reverter D, Fernandez-Catalan C, Baumgartner R, Pfander R, Huber R, Bode W, Vendrell J, Holak TA, Aviles FX, Nat Struct Biol. 2000 Apr;7(4):322-8. PMID:10742178

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