1kuh

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[[Image:1kuh.gif|left|200px]]<br /><applet load="1kuh" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:1kuh.gif|left|200px]]
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caption="1kuh, resolution 1.6&Aring;" />
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'''ZINC PROTEASE FROM STREPTOMYCES CAESPITOSUS'''<br />
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{{Structure
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|PDB= 1kuh |SIZE=350|CAPTION= <scene name='initialview01'>1kuh</scene>, resolution 1.6&Aring;
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|SITE= <scene name='pdbsite=ZIN:Zn+Coordination'>ZIN</scene>
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|LIGAND= <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene> and <scene name='pdbligand=CA:CALCIUM ION'>CA</scene>
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|ACTIVITY=
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|GENE=
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}}
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'''ZINC PROTEASE FROM STREPTOMYCES CAESPITOSUS'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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1KUH is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Streptomyces_caespitosus Streptomyces caespitosus] with <scene name='pdbligand=ZN:'>ZN</scene> and <scene name='pdbligand=CA:'>CA</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Known structural/functional Site: <scene name='pdbsite=ZIN:Zn+Coordination'>ZIN</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KUH OCA].
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1KUH is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Streptomyces_caespitosus Streptomyces caespitosus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KUH OCA].
==Reference==
==Reference==
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Structure of the zinc endoprotease from Streptomyces caespitosus., Kurisu G, Kinoshita T, Sugimoto A, Nagara A, Kai Y, Kasai N, Harada S, J Biochem. 1997 Feb;121(2):304-8. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=9089404 9089404]
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Structure of the zinc endoprotease from Streptomyces caespitosus., Kurisu G, Kinoshita T, Sugimoto A, Nagara A, Kai Y, Kasai N, Harada S, J Biochem. 1997 Feb;121(2):304-8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9089404 9089404]
[[Category: Single protein]]
[[Category: Single protein]]
[[Category: Streptomyces caespitosus]]
[[Category: Streptomyces caespitosus]]
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[[Category: metalloproteinase]]
[[Category: metalloproteinase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 13:38:04 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:22:15 2008''

Revision as of 10:22, 20 March 2008


PDB ID 1kuh

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, resolution 1.6Å
Sites:
Ligands: and
Coordinates: save as pdb, mmCIF, xml



ZINC PROTEASE FROM STREPTOMYCES CAESPITOSUS


Overview

A zinc endoprotease produced by Streptomyces caespitosus (ScNP) specifically hydrolyzes the peptide bond at the imino side of aromatic residues and is the smallest protease found to date. Although ScNP carries the zinc-binding sequence HEXXH, its primary structure of 132 amino acid residues differs from those of other known zinc metalloendoproteases. X-ray structural analysis of ScNP at 1.6 A resolution revealed that despite a lack of sequence homology, the common topological feature of main-chain folding and a beta-turn containing methionine, which is a feature of the zinc metalloendoprotease superfamily of metzincins, is conserved in ScNP. The zinc atom of ScNP is tetrahedrally ligated by the two histidines in the HEXXH sequence, an aspartate residue and a water molecule. Thus, ScNP represents a novel subfamily of metzincins with a HEXXHXXGXXD zinc-binding sequence. A plausible substrate recognition pocket to which aromatic residues bind is located near the catalytic zinc ion.

About this Structure

1KUH is a Single protein structure of sequence from Streptomyces caespitosus. Full crystallographic information is available from OCA.

Reference

Structure of the zinc endoprotease from Streptomyces caespitosus., Kurisu G, Kinoshita T, Sugimoto A, Nagara A, Kai Y, Kasai N, Harada S, J Biochem. 1997 Feb;121(2):304-8. PMID:9089404

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