Goodell E W, Schwarz U
J Bacteriol. 1985 Apr;162(1):391-7. doi: 10.1128/jb.162.1.391-397.1985.
Escherichia coli W7 cells were found to release three different muropeptides into the culture medium: tetrapeptide (L-Ala-D-Glu-meso-diaminopimelic acid-D-Ala), tripeptide (L-Ala-D-Glu-meso-diaminopimelic acid), and a previously undescribed dipeptide (meso-diaminopimelic acid-D-Ala). From the rate of release of these three peptides, it was calculated that 6 to 8% of the murein in the sacculus was lost per generation.
发现大肠杆菌W7细胞会向培养基中释放三种不同的胞壁肽:四肽(L-丙氨酸-D-谷氨酸-内消旋二氨基庚二酸-D-丙氨酸)、三肽(L-丙氨酸-D-谷氨酸-内消旋二氨基庚二酸)和一种此前未描述过的二肽(内消旋二氨基庚二酸-D-丙氨酸)。根据这三种肽的释放速率计算得出,每一代中,细胞壁中6%至8%的胞壁质会流失。