Fig. 4From: N-glycolyl chondroitin synthesis using metabolically engineered E. coliLC–MS/MS MRM result for chondroitin control and N-glycolyl chondroitin sample. a Chondroitin control has a clear peak (MRM transition pair 572/396) for CN but no peak for Gc-CN (588/412). b N-glycolyl chondroitin sample both have clear peaks (572/396) for chondroitin and Gc-CN (588/412)Back to article page