3apr: Difference between revisions

Revision as of 12:32, 28 July 2008

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File:3apr.png

Template:STRUCTURE 3apr

BINDING OF A REDUCED PEPTIDE INHIBITOR TO THE ASPARTIC PROTEINASE FROM RHIZOPUS CHINENSIS. IMPLICATIONS FOR A MECHANISM OF ACTIONBINDING OF A REDUCED PEPTIDE INHIBITOR TO THE ASPARTIC PROTEINASE FROM RHIZOPUS CHINENSIS. IMPLICATIONS FOR A MECHANISM OF ACTION

Template:ABSTRACT PUBMED 3313384

About this StructureAbout this Structure

3APR is a Single protein structure. Full crystallographic information is available from OCA.

ReferenceReference

Binding of a reduced peptide inhibitor to the aspartic proteinase from Rhizopus chinensis: implications for a mechanism of action., Suguna K, Padlan EA, Smith CW, Carlson WD, Davies DR, Proc Natl Acad Sci U S A. 1987 Oct;84(20):7009-13. PMID:3313384

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Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA

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 {{STRUCTURE_3apr|  PDB=3apr  |  SCENE=  }}
-'''BINDING OF A REDUCED PEPTIDE INHIBITOR TO THE ASPARTIC PROTEINASE FROM RHIZOPUS CHINENSIS. IMPLICATIONS FOR A MECHANISM OF ACTION'''
+===BINDING OF A REDUCED PEPTIDE INHIBITOR TO THE ASPARTIC PROTEINASE FROM RHIZOPUS CHINENSIS. IMPLICATIONS FOR A MECHANISM OF ACTION===
-==Overview==
+<!--
-A peptide inhibitor, having the sequence D-His-Pro-Phe-His-Phe psi [CH2-NH]Phe-Val-Tyr, with a reduced bond between the two adjacent phenylalanines, has been diffused into crystals of the aspartic proteinase from Rhizopus chinensis (rhizopuspepsin, EC 3.4.23.6). X-ray diffraction data to 1.8-A resolution have been collected on the complex, which has been subjected to restrained least-squares refinement to an R-factor (R equals the sum of the absolute value of the difference between the observed and calculated structure factor amplitudes divided by the sum of the observed structure factor amplitudes) of 14.7%. The inhibitor lies within the major groove of the enzyme and is clearly defined with the exception of the amino-terminal D-histidine and the carboxyl-terminal tyrosine. The reduced peptide bond is located in the active site with close contacts to the two catalytic aspartyl groups. The active-site water molecule that is held between the two carboxyl groups is displaced by the inhibitor, as are a number of other water molecules seen in the binding groove of the native enzyme. A mechanism of action for this class of enzymes is proposed from these results.
+The line below this paragraph, {{ABSTRACT_PUBMED_3313384}}, adds the Publication Abstract to the page
+(as it appears on PubMed at http://www.pubmed.gov), where 3313384 is the PubMed ID number.
+-->
+{{ABSTRACT_PUBMED_3313384}}
 ==About this Structure==
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 [[Category: Davies, D R.]]
 [[Category: Suguna, K.]]
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