Abstract:
:Acyl carrier protein (ACP) of Escherichia coli is a small acidic protein which functions as carrier of growing acyl chains during their biosynthesis and as donor of acyl chains during transfer to target molecules. This unique ACP of E. coli is expressed constitutively. In more complex bacteria, multiple ACPs are present, indicating a channeling of pools of multi-carbon units into different biosynthetic routes. In rhizobia, for example, besides the constitutive ACP (AcpP) involved in the biosynthesis and transfer of common fatty acids, three specialized ACPs have been reported: (1) the flavonoid-inducible nodulation protein NodF, (2) AcpXL that transfers 27-hydroxyoctacosanoic acid to a sugar backbone during lipid A biosynthesis, and (3) the RkpF protein which is required for the biosynthesis of rhizobial capsular polysaccharides. All three of those specialized rhizobial ACPs are required for the biosynthesis of cell-surface molecules that play a role in establishing the symbiotic relationship between rhizobia and their legume hosts. Surprisingly, the recently sequenced genomes from Mesorhizobium loti and Sinorhizobium meliloti suggest even more candidates for ACPs in rhizobia.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Geiger O,López-Lara IMdoi
10.1111/j.1574-6968.2002.tb11075.xkeywords:
subject
Has Abstractpub_date
2002-03-05 00:00:00pages
153-62issue
2eissn
0378-1097issn
1574-6968pii
S0378109702004780journal_volume
208pub_type
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