MlpA, a lipoprotein required for normal development of Myxococcus xanthus.
AUTOR(ES)
Hanlon, W A
RESUMO
The mlpA gene encoding a 236-residue polypeptide has been identified immediately downstream of the oar gene of Myxococcus xanthus (M. Martinez-Canamero, J. Munoz-Dorado, E. Farez-Vidal, M. Inouye, and S. Inouye, J. Bacteriol. 175:4756-4763, 1993). The amino-terminal 21 residues of MlpA encode a typical prokaryotic signal sequence with a putative lipoprotein cleavage site. When expressed in Escherichia coli in the presence of [2-3H]glycerol, 3H-labeled MlpA had a molecular mass of 33 kDa and was found to be associated with the membrane fraction. Globomycin, an inhibitor of signal peptidase II, caused a shift in the mobility of E. coli-expressed MlpA to 35 kDa. Subsequently, a mlpA disruption strain (oar+) was constructed and found to have delayed fruiting body formation (by approximately 36 h), with significantly larger fruiting bodies being produced compared with those of the wild-type strain. Nevertheless, spore yields for the two strains were identical after 120 h of development. These data indicate that MlpA, the lipoprotein identified in M. xanthus, is required for normal fruiting body formation.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=177594Documentos Relacionados
- Propionyl coenzyme A carboxylase is required for development of Myxococcus xanthus.
- Oar, a 115-kilodalton membrane protein required for development of Myxococcus xanthus.
- Methylation of macromolecules during development in Myxococcus xanthus.
- Role of autocide AMI in development of Myxococcus xanthus.
- Release of a cell surface protein during development of Myxococcus xanthus.