1pda: Difference between revisions

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[[Image:1pda.jpg|left|200px]]
{{Seed}}
[[Image:1pda.png|left|200px]]


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{{STRUCTURE_1pda|  PDB=1pda  |  SCENE=  }}  
{{STRUCTURE_1pda|  PDB=1pda  |  SCENE=  }}  


'''STRUCTURE OF PORPHOBILINOGEN DEAMINASE REVEALS A FLEXIBLE MULTIDOMAIN POLYMERASE WITH A SINGLE CATALYTIC SITE'''
===STRUCTURE OF PORPHOBILINOGEN DEAMINASE REVEALS A FLEXIBLE MULTIDOMAIN POLYMERASE WITH A SINGLE CATALYTIC SITE===




==Overview==
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The three-domain structure of porphobilinogen deaminase, a key enzyme in the biosynthetic pathway of tetrapyrroles, has been defined by X-ray analysis at 1.9 A resolution. Two of the domains structurally resemble the transferrins and periplasmic binding proteins. The dipyrromethane cofactor is covalently linked to domain 3 but is bound by extensive salt-bridges and hydrogen-bonds within the cleft between domains 1 and 2, at a position corresponding to the binding sites for small-molecule ligands in the analogous proteins. The X-ray structure and results from site-directed mutagenesis provide evidence for a single catalytic site. Interdomain flexibility may aid elongation of the polypyrrole product in the active-site cleft of the enzyme.
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{{ABSTRACT_PUBMED_1522882}}


==About this Structure==
==About this Structure==
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[[Category: Wood, S P.]]
[[Category: Wood, S P.]]
[[Category: Woodcock, S C.]]
[[Category: Woodcock, S C.]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 04:57:30 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 12:54:56 2008''

Revision as of 09:55, 29 July 2008

File:1pda.png

Template:STRUCTURE 1pda

STRUCTURE OF PORPHOBILINOGEN DEAMINASE REVEALS A FLEXIBLE MULTIDOMAIN POLYMERASE WITH A SINGLE CATALYTIC SITE

Template:ABSTRACT PUBMED 1522882

About this Structure

1PDA is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.

Reference

Structure of porphobilinogen deaminase reveals a flexible multidomain polymerase with a single catalytic site., Louie GV, Brownlie PD, Lambert R, Cooper JB, Blundell TL, Wood SP, Warren MJ, Woodcock SC, Jordan PM, Nature. 1992 Sep 3;359(6390):33-9. PMID:1522882

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