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Biochim Biophys Acta. 1996 Dec 5;1298(2):141-7.

Sequence analysis of an operon of a NAD(P)-reducing nickel hydrogenase from the cyanobacterium Synechocystis sp. PCC 6803 gives additional evidence for direct coupling of the enzyme to NAD(P)H-dehydrogenase (complex I).

Author information

1
Philipps-Universit├Ąt, Marburg, Germany.

Abstract

The sequence of a NAD(P)-reducing hydrogenase operon of Synechocystis sp. PCC 6803 containing genes for a small and a large hydrogenase subunit and six additional ORFs was determined. Until now only 11 of the 14 polypeptides of the NADH-dehydrogenase of E. coli were found in Synechocystis. By sequence homologies we suggest that the missing subunits of the peripheral part of the dehydrogenase, containing most of the FeS-clusters, are encoded by three ORFs of this operon. This hypothesis is discussed in relation to the NAD(P)-reducing hydrogenase of Synechocystis.

PMID:
8980640
DOI:
10.1016/s0167-4838(96)00176-8
[Indexed for MEDLINE]

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