Benzoate mediates the simultaneous repression of anaerobic 4-methylbenzoate and succinate utilization in Magnetospirillum sp. strain pMbN1.

ABSTRACT:

Background

At high concentrations of organic substrates, microbial utilization of preferred substrates (i.e., supporting fast growth) often results in diauxic growth with hierarchical substrate depletion. Unlike the carbon catabolite repression-mediated discriminative utilization of carbohydrates, the substrate preferences of non-carbohydrate-utilizing bacteria for environmentally relevant compound classes (e.g., aliphatic or aromatic acids) are rarely investigated. The denitrifying alphaproteobacterium Magnetospirillum sp. strain pMbN1 anaerobically degrades a wide variety of aliphatic and aromatic compounds and is unique for anaerobic degradation of 4-methylbenzoate. The latter proceeds via a distinct reaction sequence analogous to the central anaerobic benzoyl-CoA pathway to int

SUBMITTER: Lahme S 

PROVIDER: S-EPMC4268860 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature