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2cbz

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[[Image:2cbz.gif|left|200px]]
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{{STRUCTURE_2cbz| PDB=2cbz | SCENE= }}
{{STRUCTURE_2cbz| PDB=2cbz | SCENE= }}
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'''STRUCTURE OF THE HUMAN MULTIDRUG RESISTANCE PROTEIN 1 NUCLEOTIDE BINDING DOMAIN 1'''
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===STRUCTURE OF THE HUMAN MULTIDRUG RESISTANCE PROTEIN 1 NUCLEOTIDE BINDING DOMAIN 1===
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==Overview==
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Human multidrug resistance protein 1 (MRP1) is a membrane protein that belongs to the ATP-binding cassette (ABC) superfamily of transport proteins. MRP1 contributes to chemotherapy failure by exporting a wide range of anti-cancer drugs when over expressed in the plasma membrane of cells. Here, we report the first high-resolution crystal structure of human MRP1-NBD1. Drug efflux requires energy resulting from hydrolysis of ATP by nucleotide binding domains (NBDs). Contrary to the prokaryotic NBDs, the extremely low intrinsic ATPase activity of isolated MRP1-NBDs allowed us to obtain the structure of wild-type NBD1 in complex with Mg2+/ATP. The structure shows that MRP1-NBD1 adopts a canonical fold, but reveals an unexpected non-productive conformation of the catalytic site, providing an explanation for the low intrinsic ATPase activity of NBD1 and new hypotheses on the cooperativity of ATPase activity between NBD1 and NBD2 upon heterodimer formation.
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The line below this paragraph, {{ABSTRACT_PUBMED_16697012}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 16697012 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16697012}}
==About this Structure==
==About this Structure==
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[[Category: Nucleotide-binding domain]]
[[Category: Nucleotide-binding domain]]
[[Category: Transport]]
[[Category: Transport]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 21:43:25 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 13:45:06 2008''

Revision as of 10:45, 28 July 2008

Image:2cbz.png

Template:STRUCTURE 2cbz

STRUCTURE OF THE HUMAN MULTIDRUG RESISTANCE PROTEIN 1 NUCLEOTIDE BINDING DOMAIN 1

Template:ABSTRACT PUBMED 16697012

About this Structure

2CBZ is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure of the human multidrug resistance protein 1 nucleotide binding domain 1 bound to Mg2+/ATP reveals a non-productive catalytic site., Ramaen O, Leulliot N, Sizun C, Ulryck N, Pamlard O, Lallemand JY, Tilbeurgh H, Jacquet E, J Mol Biol. 2006 Jun 16;359(4):940-9. Epub 2006 May 2. PMID:16697012

Page seeded by OCA on Mon Jul 28 13:45:06 2008

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