1fno: Difference between revisions

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[[Image:1fno.gif|left|200px]]
{{Seed}}
[[Image:1fno.png|left|200px]]


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{{STRUCTURE_1fno|  PDB=1fno  |  SCENE=  }}  
{{STRUCTURE_1fno|  PDB=1fno  |  SCENE=  }}  


'''PEPTIDASE T (TRIPEPTIDASE)'''
===PEPTIDASE T (TRIPEPTIDASE)===




==Overview==
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The structure of peptidase T, or tripeptidase, was determined by multiple wavelength anomalous dispersion (MAD) methodology and refined to 2.4 A resolution. Peptidase T comprises two domains; a catalytic domain with an active site containing two metal ions, and a smaller domain formed through a long insertion into the catalytic domain. The two metal ions, presumably zinc, are separated by 3.3 A, and are coordinated by five carboxylate and histidine ligands. The molecular surface of the active site is negatively charged. Peptidase T has the same basic fold as carboxypeptidase G2. When the structures of the two enzymes are superimposed, a number of homologous residues, not evident from the sequence alone, could be identified. Comparison of the active sites of peptidase T, carboxypeptidase G2, Aeromonas proteolytica aminopeptidase, carboxypeptidase A and leucine aminopeptidase reveals a common structural framework with interesting similarities and differences in the active sites and in the zinc coordination. A putative binding site for the C-terminal end of the tripeptide substrate was found at a peptidase T specific fingerprint sequence motif.
The line below this paragraph, {{ABSTRACT_PUBMED_11856302}}, adds the Publication Abstract to the page
(as it appears on PubMed at http://www.pubmed.gov), where 11856302 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11856302}}


==About this Structure==
==About this Structure==
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[[Category: Protease]]
[[Category: Protease]]
[[Category: Zinc]]
[[Category: Zinc]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 16:32:51 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 03:38:05 2008''

Revision as of 00:38, 1 July 2008

File:1fno.png

Template:STRUCTURE 1fno

PEPTIDASE T (TRIPEPTIDASE)

Template:ABSTRACT PUBMED 11856302

About this Structure

1FNO is a Single protein structure of sequence from Salmonella typhimurium. Full crystallographic information is available from OCA.

Reference

Structure of peptidase T from Salmonella typhimurium., Hakansson K, Miller CG, Eur J Biochem. 2002 Jan;269(2):443-50. PMID:11856302

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