Defining a direction: electron transfer and catalysis in Escherichia coli complex II enzymes.
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ABSTRACT:
SUBMITTER: Maklashina E
PROVIDER: S-EPMC3615059 | biostudies-literature | 2013 May
REPOSITORIES: biostudies-literature
Publications
Defining a direction: electron transfer and catalysis in Escherichia coli complex II enzymes.
Maklashina Elena E Cecchini Gary G Dikanov Sergei A SA
Biochimica et biophysica acta 20130208 5
There are two homologous membrane-bound enzymes in Escherichia coli that catalyze reversible conversion between succinate/fumarate and quinone/quinol. Succinate:ubiquinone reductase (SQR) is a component of aerobic respiratory chains, whereas quinol:fumarate reductase (QFR) utilizes menaquinol to reduce fumarate in a final step of anaerobic respiration. Although, both protein complexes are capable of supporting bacterial growth on either minimal succinate or fumarate media, the enzymes are more p ...[more]
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