1loo

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
-
[[Image:1loo.jpg|left|200px]]
+
{{Seed}}
 +
[[Image:1loo.png|left|200px]]
<!--
<!--
Line 9: Line 10:
{{STRUCTURE_1loo| PDB=1loo | SCENE= }}
{{STRUCTURE_1loo| PDB=1loo | SCENE= }}
-
'''Crystal Structure of the Mouse-Muscle Adenylosuccinate Synthetase Ligated with GTP'''
+
===Crystal Structure of the Mouse-Muscle Adenylosuccinate Synthetase Ligated with GTP===
-
==Overview==
+
<!--
-
Prokaryotes have a single form of adenylosuccinate synthetase that controls the committed step of AMP biosynthesis, but vertebrates have two isozymes of the synthetase. The basic isozyme, which predominates in muscle, participates in the purine nucleotide cycle, has an active site conformation different from that of the Escherichia coli enzyme, and exhibits significant differences in ligand recognition. Crystalline complexes presented here of the recombinant basic isozyme from mouse show the following. GTP alone binds to the active site without inducing a conformational change. IMP in combination with an acetate anion induces major conformational changes and organizes the active site for catalysis. IMP, in the absence of GTP, binds to the GTP pocket of the synthetase. The combination of GTP and IMP results in the formation of a stable complex of 6-phosphoryl-IMP and GDP in the presence or absence of hadacidin. The response of the basic isozyme to GTP alone differs from that of synthetases from plants, and yet the conformation of the mouse basic and E. coli synthetases in their complexes with GDP, 6-phosphoryl-IMP, and hadacidin are nearly identical. Hence, reported differences in ligand recognition among synthetases probably arise from conformational variations observed in partially ligated enzymes.
+
The line below this paragraph, {{ABSTRACT_PUBMED_12004071}}, adds the Publication Abstract to the page
 +
(as it appears on PubMed at http://www.pubmed.gov), where 12004071 is the PubMed ID number.
 +
-->
 +
{{ABSTRACT_PUBMED_12004071}}
==About this Structure==
==About this Structure==
Line 30: Line 34:
[[Category: Ligase]]
[[Category: Ligase]]
[[Category: Purine biosynthesis]]
[[Category: Purine biosynthesis]]
-
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 00:07:32 2008''
+
 
 +
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 21:36:19 2008''

Revision as of 18:36, 2 July 2008

Image:1loo.png

Template:STRUCTURE 1loo

Crystal Structure of the Mouse-Muscle Adenylosuccinate Synthetase Ligated with GTP

Template:ABSTRACT PUBMED 12004071

About this Structure

1LOO is a Single protein structure of sequence from Mus musculus. Full crystallographic information is available from OCA.

Reference

IMP, GTP, and 6-phosphoryl-IMP complexes of recombinant mouse muscle adenylosuccinate synthetase., Iancu CV, Borza T, Fromm HJ, Honzatko RB, J Biol Chem. 2002 Jul 26;277(30):26779-87. Epub 2002 May 9. PMID:12004071

Page seeded by OCA on Wed Jul 2 21:36:19 2008

Proteopedia Page Contributors and Editors (what is this?)

OCA

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