Abstract
The Saccharomyces cerevisiae respiratory supercomplex factor 2 (Rcf2) is a 224-residue protein located in the mitochondrial inner membrane where it is involved in the formation of supercomplexes composed of cytochrome bc1 and cytochrome c oxidase. We previously demonstrated that Rcf2 forms a dimer in dodecylphosphocholine micelles, and here we report the solution NMR structure of this Rcf2 dimer. Each Rcf2 monomer has two soluble ? helices and five putative transmembrane (TM) ? helices, including an unexpectedly charged TM helix at the C terminus, which mediates dimer formation. The NOE contacts indicate the presence of inter-monomer salt bridges and hydrogen bonds at the dimer interface, which stabilize the Rcf2 dimer structure. Moreover, NMR chemical shift change mapping upon lipid titrations as well as molecular dynamics analysis reveal possible structural changes upon embedding Rcf2 into a native lipid environment. Our results contribute to the understanding of respiratory supercomplex formation and regulation.
PMID: 32905793 [PubMed - as supplied by publisher]
Solution NMR structure of yeast Rcf1, a protein involved in respiratory supercomplex formation [Biophysics and Computational Biology]
Solution NMR structure of yeast Rcf1, a protein involved in respiratory supercomplex formation
Shu Zhou, Pontus Pettersson, Jingȷing Huang, Johannes Sȷoholm, Dan Sȷostrand, Regis Pomes, Martin Hogbom, Peter Brzezinski, Lena Maler, Pia Adelroth...
Date: 2018-03-20
The Saccharomyces cerevisiae respiratory supercomplex factor 1 (Rcf1) protein is located in the mitochondrial inner membrane where it is involved in formation of supercomplexes composed of respiratory complexes III and IV. We report the solution structure of Rcf1, which forms a dimer in...
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[NMR paper] Solution NMR structure of yeast Rcf1, a protein involved in respiratory supercomplex formation.
Solution NMR structure of yeast Rcf1, a protein involved in respiratory supercomplex formation.
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Proc Natl Acad Sci U S A. 2018 Mar 05;:
Authors: Zhou S, Pettersson P, Huang J, Sjöholm J, Sjöstrand D, Pomès R, Högbom M, Brzezinski P, Mäler L, Ädelroth P
Abstract
The Saccharomyces cerevisiae respiratory supercomplex factor 1 (Rcf1) protein is located in the mitochondrial inner membrane where it is involved in...
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http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/bichaw/0/bichaw.ahead-of-print/bi301171u/aop/images/medium/bi-2012-01171u_0004.gif
Biochemistry
DOI: 10.1021/bi301171u
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