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1jj7

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{{STRUCTURE_1jj7| PDB=1jj7 | SCENE= }}
{{STRUCTURE_1jj7| PDB=1jj7 | SCENE= }}
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'''Crystal Structure of the C-terminal ATPase domain of human TAP1'''
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===Crystal Structure of the C-terminal ATPase domain of human TAP1===
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==Overview==
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The transporter associated with antigen processing (TAP) is an ABC transporter formed of two subunits, TAP1 and TAP2, each of which has an N-terminal membrane-spanning domain and a C-terminal ABC ATPase domain. We report the structure of the C-terminal ABC ATPase domain of TAP1 (cTAP1) bound to ADP. cTAP1 forms an L-shaped molecule with two domains, a RecA-like domain and a small alpha-helical domain. The diphosphate group of ADP interacts with the P-loop as expected. Residues thought to be involved in gamma-phosphate binding and hydrolysis show flexibility in the ADP-bound state as evidenced by their high B-factors. Comparisons of cTAP1 with other ABC ATPases from the ABC transporter family as well as ABC ATPases involved in DNA maintenance and repair reveal key regions and residues specific to each family. Three ATPase subfamilies are identified which have distinct adenosine recognition motifs, as well as distinct subdomains that may be specific to the different functions of each subfamily. Differences between TAP1 and TAP2 in the nucleotide-binding site may be related to the observed asymmetry during peptide transport.
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(as it appears on PubMed at http://www.pubmed.gov), where 11532960 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11532960}}
==Disease==
==Disease==
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[[Category: Helical domain]]
[[Category: Helical domain]]
[[Category: P-loop]]
[[Category: P-loop]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 21:17:18 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 20:19:37 2008''

Revision as of 17:19, 1 July 2008

Image:1jj7.png

Template:STRUCTURE 1jj7

Contents

Crystal Structure of the C-terminal ATPase domain of human TAP1

Template:ABSTRACT PUBMED 11532960

Disease

Known disease associated with this structure: Bare lymphocyte syndrome, type I OMIM:[170260], Bare lymphocyte syndrome, type I OMIM:[170260]

About this Structure

1JJ7 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure of the ABC ATPase domain of human TAP1, the transporter associated with antigen processing., Gaudet R, Wiley DC, EMBO J. 2001 Sep 3;20(17):4964-72. PMID:11532960

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