FIG. 2.

Incorporation of radiolabelled substrates into cyanelle lipid-linked peptidoglycan precursors by cyanelle envelope membranes. (a) Incorporation of UDP-N-acetyl-[U-¹⁴C]glucosamine; (b) incorporation of [1,4-¹⁴C]putrescine. Standard deviations are derived from two or more experiments with the exception of experimental results marked with asterisks, which were not repeated. The amount of radioactivity incorporated into lipid precursors in the standard assay (100%) was about 600 and 1,500 cpm for [1,4-¹⁴C]putrescine and UDP-N-acetyl-[U-¹⁴C]glucosamine, respectively. UDPMPP, UDP-N-acetylmuramyl pentapeptide; UDPMTP, UDP-N-acetylmuramyl tripeptide; UnP, undecaprenol phosphate; UDPG, UDP-N-acetylglucosamine; Cad, cadaverine; Orn, ornithine; NAP, N-acetylputrescine; w/o, without.