This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.


1a0g

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
-
[[Image:1a0g.gif|left|200px]]
+
{{Seed}}
 +
[[Image:1a0g.png|left|200px]]
<!--
<!--
Line 9: Line 10:
{{STRUCTURE_1a0g| PDB=1a0g | SCENE= }}
{{STRUCTURE_1a0g| PDB=1a0g | SCENE= }}
-
'''L201A MUTANT OF D-AMINO ACID AMINOTRANSFERASE COMPLEXED WITH PYRIDOXAMINE-5'-PHOSPHATE'''
+
===L201A MUTANT OF D-AMINO ACID AMINOTRANSFERASE COMPLEXED WITH PYRIDOXAMINE-5'-PHOSPHATE===
-
==Overview==
+
<!--
-
The leucine-to-alanine mutation at residue 201 of D-amino acid aminotransferase provides a unique enzyme which gradually loses its activity while catalyzing the normal transamination; the co-enzyme form is converted from pyridoxal 5'-phosphate to pyridoxamine 5'-phosphate upon the inactivation [Kishimoto,K., Yoshimura,T., Esaki,N., Sugio,S., Manning,J.M. and Soda,K. (1995) J. Biochem., 117, 691-696]. Crystal structures of both co-enzyme forms of the mutant enzyme have been determined at 2.0 A resolution: they are virtually identical, and are quite similar to that of the wild-type enzyme. Significant differences in both forms of the mutant are localized only on the bound co-enzyme, the side chains of Lys145 and Tyr31, and a water molecule sitting on the putative substrate binding site. Detailed comparisons of the structures of the mutant, together with that of the pyridoxamine-5'-phosphate form of the wild-type enzyme, imply that Leu201 would play a crucial role in the transamination reaction by keeping the pyridoxyl ring in the proper location without disturbing its oscillating motion, although the residue seems to not be especially important for the structural integrity of the enzyme.
+
The line below this paragraph, {{ABSTRACT_PUBMED_9749913}}, adds the Publication Abstract to the page
 +
(as it appears on PubMed at http://www.pubmed.gov), where 9749913 is the PubMed ID number.
 +
-->
 +
{{ABSTRACT_PUBMED_9749913}}
==About this Structure==
==About this Structure==
Line 37: Line 41:
[[Category: Pyridoxal-5'-phosphate]]
[[Category: Pyridoxal-5'-phosphate]]
[[Category: Transferase]]
[[Category: Transferase]]
-
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 09:37:30 2008''
+
 
 +
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 15:43:30 2008''

Revision as of 12:43, 30 June 2008

Image:1a0g.png

Template:STRUCTURE 1a0g

L201A MUTANT OF D-AMINO ACID AMINOTRANSFERASE COMPLEXED WITH PYRIDOXAMINE-5'-PHOSPHATE

Template:ABSTRACT PUBMED 9749913

About this Structure

1A0G is a Single protein structure of sequence from Bacillus sp.. Full crystallographic information is available from OCA.

Reference

Crystal structures of L201A mutant of D-amino acid aminotransferase at 2.0 A resolution: implication of the structural role of Leu201 in transamination., Sugio S, Kashima A, Kishimoto K, Peisach D, Petsko GA, Ringe D, Yoshimura T, Esaki N, Protein Eng. 1998 Aug;11(8):613-9. PMID:9749913

Page seeded by OCA on Mon Jun 30 15:43:30 2008

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1a0g"
Personal tools