High levels of glycolipid and low levels of phospholipid in a marine caulobacter.
AUTOR(ES)
De Siervo, A J
RESUMO
Studies of the lipid composition of the marine bacterium Caulobacter halobacteroides revealed the presence of glycolipid as the predominant lipid constituent. The presence of minor amounts of phospholipid was confirmed with the incorporation of 14C- and 32P-labeled compounds. Other marine caulobacters had similar lipid compositions. Five chromatographically separable glycolipids were detected, two of which were identified as mono- and diglycosyldiglycerides. Glycolipid constituted 90 to 99% of the total extractable lipid based on 14C-acetate incorporation into six marine caulobacter strains. In addition, comparisons were made with the lipid extracts of the nonmarine Caulobacter crescentus and Micrococcus lysodeikticus, which contain substantial amounts of phospholipid. Studies of lipid composition during growth showed the maximum amount of phospholipid during early logarithmic growth (2.9%) with a decrease to 0.3% in the early stationary phase. The finding of a group of organisms in which phospholipid is not a major constituent of the lipid fraction is unique and generates many questions about the lipid requirements for membrane structure and function.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=214306Documentos Relacionados
- Identification of genes affecting production of the adhesive holdfast of a marine caulobacter.
- An Escherichia coli chemoreceptor gene is temporally controlled in Caulobacter.
- Pilus-dependent, double-stranded DNA bacteriophage for Caulobacter.
- Effect of cis-platinum(II)diamminodichloride on cell division of Hyphomicrobium and Caulobacter.
- Cell cycle regulation and cell type-specific localization of the FtsZ division initiation protein in Caulobacter.