Changes in murein composition during the cell cycle of Caulobacter crescentus.

: The amino acid and muropeptide compositions of murein (peptidoglycan) isolated from populations of Caulobacter crescentus predominantly composed of swarmer or stalked cells were determined and compared with the structure of murein sacculi obtained from a population of unsegregated cells. It appears that in spite of vast morphological alterations in the course of the cell cycle, the murein composition of the various cell types is not markedly different.