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Interactions between subunits a and b in the rotary ATP synthase as determined by cross-linking

Abstract:
The interaction of the membrane traversing stator subunits a and b of the rotary ATP synthase was probed by substitution of a single Cys into each subunit with subsequent Cu2+ catalyzed cross-linking. Extensive interaction between the transmembrane (TM) region of one b subunit and TM2 of subunit a was indicated by cross-linking with 6 Cys pairs introduced into these regions. Additional disulfide cross-linking was observed between the N-terminus of subunit b and the periplasmic loop connecting TM4 and TM5 of subunit a. Finally, benzophenone-4-maleimide derivatized Cys in the 2–3 periplasmic loop of subunit a were shown to cross-link with the periplasmic N-terminal region of subunit b. These experiments help to define the juxtaposition of subunits b and a in the ATP synthase.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.febslet.2013.02.012

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author


Publisher:
Elsevier
Journal:
FEBS Letters More from this journal
Volume:
587
Issue:
7
Pages:
892-897
Publication date:
2013-02-14
Acceptance date:
2013-02-14
DOI:
EISSN:
1873-3468
ISSN:
0014-5793
Pmid:
23416299


Language:
English
Keywords:
Pubs id:
389271
Local pid:
pubs:389271
Deposit date:
2023-07-28

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