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1rj5

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{{STRUCTURE_1rj5| PDB=1rj5 | SCENE= }}
{{STRUCTURE_1rj5| PDB=1rj5 | SCENE= }}
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'''Crystal Structure of the Extracellular Domain of Murine Carbonic Anhydrase XIV'''
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===Crystal Structure of the Extracellular Domain of Murine Carbonic Anhydrase XIV===
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==Overview==
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Carbonic anhydrase (CA) XIV is the most recently identified mammalian carbonic anhydrase isozyme, and its presence has been demonstrated in a number of tissues. Full-length CA XIV is a transmembrane protein composed of an extracellular catalytic domain, a single transmembrane helix, and a short intracellular polypeptide segment. The amino acid sequence identity of human CA XIV relative to the other membrane-associated isozymes (CA IV, CA IX, and CA XII) is 34-46%. We report here the expression and purification of both the full-length enzyme and a truncated, secretory form of murine CA XIV. Both forms of this isozyme are highly active, and both show an abrogation of activity in the presence of 0.2% SDS, in contrast to the behavior of murine CA IV. We also report the crystal structure of the extracellular domain of murine CA XIV at 2.8 A resolution and of an enzyme-acetazolamide complex at 2.9 A resolution. The structure shows a monomeric glycoprotein with a topology similar to that of other mammalian CA isozymes. Based on the x-ray crystallographic results, we compare and contrast known structures of membrane-associated CA isozymes to rationalize the structural elements responsible for the SDS resistance of CA IV and to discuss prospects for the design of selective inhibitors of membrane-associated CA isozymes.
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{{ABSTRACT_PUBMED_14660577}}
==About this Structure==
==About this Structure==
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[[Category: Beta-sheet]]
[[Category: Beta-sheet]]
[[Category: Zinc enzyme]]
[[Category: Zinc enzyme]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 07:33:25 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 16:23:11 2008''

Revision as of 13:23, 27 July 2008

Image:1rj5.png

Template:STRUCTURE 1rj5

Crystal Structure of the Extracellular Domain of Murine Carbonic Anhydrase XIV

Template:ABSTRACT PUBMED 14660577

About this Structure

1RJ5 is a Single protein structure of sequence from Mus musculus. Full crystallographic information is available from OCA.

Reference

Expression, assay, and structure of the extracellular domain of murine carbonic anhydrase XIV: implications for selective inhibition of membrane-associated isozymes., Whittington DA, Grubb JH, Waheed A, Shah GN, Sly WS, Christianson DW, J Biol Chem. 2004 Feb 20;279(8):7223-8. Epub 2003 Dec 3. PMID:14660577

Page seeded by OCA on Sun Jul 27 16:23:11 2008

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