1dtd

<StructureSection load='1dtd' size='340' side='right' caption='[[1dtd]], [[Resolution|resolution]] 1.65&Aring;' scene=''>

<table><tr><td colspan='2'>[[1dtd]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Hirudo_medicinalis Hirudo medicinalis] and [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DTD OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DTD FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GLU:GLUTAMIC+ACID'>GLU</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Peptidyl-dipeptidase_A Peptidyl-dipeptidase A], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.15.1 3.4.15.1] </span></td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1dtd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dtd OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1dtd RCSB], [http://www.ebi.ac.uk/pdbsum/1dtd PDBsum]</span></td></tr>

<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dt/1dtd_consurf.spt"</scriptWhenChecked>

</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].

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== Publication Abstract from PubMed ==

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.

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<ref>PMID:10742178</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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*[[Carboxypeptidase|Carboxypeptidase]]

[[Category: Peptidyl-dipeptidase A]]

[[Category: Aviles, F X]]

[[Category: Bode, W]]

[[Category: Fernandez-Catalan, C]]

[[Category: Holak, T A]]

[[Category: Reverter, D]]

[[Category: Leech carboxypeptidase inhibitor]]