1q3h: Difference between revisions

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[[Image:1q3h.gif|left|200px]]
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{{STRUCTURE_1q3h|  PDB=1q3h  |  SCENE=  }}  
{{STRUCTURE_1q3h|  PDB=1q3h  |  SCENE=  }}  


'''mouse CFTR NBD1 with AMP.PNP'''
===mouse CFTR NBD1 with AMP.PNP===




==Overview==
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Cystic fibrosis transmembrane conductance regulator (CFTR) is an ATP-binding cassette (ABC) transporter that functions as a chloride channel. Nucleotide-binding domain 1 (NBD1), one of two ABC domains in CFTR, also contains sites for the predominant CF-causing mutation and, potentially, for regulatory phosphorylation. We have determined crystal structures for mouse NBD1 in unliganded, ADP- and ATP-bound states, with and without phosphorylation. This NBD1 differs from typical ABC domains in having added regulatory segments, a foreshortened subdomain interconnection, and an unusual nucleotide conformation. Moreover, isolated NBD1 has undetectable ATPase activity and its structure is essentially the same independent of ligand state. Phe508, which is commonly deleted in CF, is exposed at a putative NBD1-transmembrane interface. Our results are consistent with a CFTR mechanism, whereby channel gating occurs through ATP binding in an NBD1-NBD2 nucleotide sandwich that forms upon displacement of NBD1 regulatory segments.
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{{ABSTRACT_PUBMED_14685259}}


==About this Structure==
==About this Structure==
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[[Category: Lewis, H A.]]
[[Category: Lewis, H A.]]
[[Category: Abc transporter nucleotide binding domain]]
[[Category: Abc transporter nucleotide binding domain]]
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Revision as of 15:19, 29 July 2008

File:1q3h.png

Template:STRUCTURE 1q3h

mouse CFTR NBD1 with AMP.PNPmouse CFTR NBD1 with AMP.PNP

Template:ABSTRACT PUBMED 14685259

About this StructureAbout this Structure

1Q3H is a Single protein structure of sequence from Mus musculus. Full crystallographic information is available from OCA.

ReferenceReference

Structure of nucleotide-binding domain 1 of the cystic fibrosis transmembrane conductance regulator., Lewis HA, Buchanan SG, Burley SK, Conners K, Dickey M, Dorwart M, Fowler R, Gao X, Guggino WB, Hendrickson WA, Hunt JF, Kearins MC, Lorimer D, Maloney PC, Post KW, Rajashankar KR, Rutter ME, Sauder JM, Shriver S, Thibodeau PH, Thomas PJ, Zhang M, Zhao X, Emtage S, EMBO J. 2004 Jan 28;23(2):282-93. Epub 2003 Dec 18. PMID:14685259

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