An Escherichia coli cyoE gene homologue in thermophilic Bacillus PS3 encodes a thermotolerant heme O synthase.

Abstract:

:The cyoE gene of the Escherichia coli bo-type quinol oxidase operon (cyoABCDE) has been previously shown to encode heme O synthase. To demonstrate a catalytic role of a cyoE homologue (the caaE gene) in the gene cluster for caa3-type cytochrome c oxidase of thermophilic Bacillus PS3, we have carried out genetic complementation analysis using the chimeric operon cyoABCD-caaE and heme O synthase assay using the CaaE-overproduced E. coli membranes. We found that the caaE gene encodes a thermotolerant heme O synthase which provides an intermediate for heme A biosynthesis.

journal_name

FEBS Lett

journal_title

FEBS letters

authors

Saiki K,Mogi T,Ishizuka M,Anraku Y

doi

10.1016/0014-5793(94)00889-2

subject

Has Abstract

pub_date

1994-09-12 00:00:00

pages

385-8

issue

3

eissn

0014-5793

issn

1873-3468

pii

0014-5793(94)00889-2

journal_volume

351

pub_type

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