A1 Refereed original research article in a scientific journal

AtCYP20-2 is an auxiliary protein of the chloroplast NAD(P)H dehydrogenase complex




AuthorsSirpio S, Holmstrom M, Battchikova N, Aro EM

PublisherELSEVIER SCIENCE BV

Publication year2009

Journal:FEBS Letters

Journal name in sourceFEBS LETTERS

Journal acronymFEBS LETT

Volume583

Issue14

First page 2355

Last page2358

Number of pages4

ISSN0014-5793

DOIhttps://doi.org/10.1016/j.febslet.2009.06.031


Abstract
AtCYP20-2 is one of 16 immunophilins in thylakoid lumen. The presence of the isomerase domain in AtCYP20-2, an enrichment of AtCYP20-2 in the stroma membranes and it's co-migration with NAD(P)H dehydrogenase (NDH) in native gels provide evidence that AtCYP20-2 is an auxiliary protein of NDH. When different NDH mutants were studied, AtCYP20-2 was found to be strongly reduced especially in mutants deficient in the membrane domain of NDH, thus suggesting a role in the assembly of NDH hydrophobic domain. Lack of AtCYP20-2, however, did not lead to severe malfunction of NDH, indicating redundancy in the function of lumenal immunophilins. (C) 2009 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.



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