PMID- 20060537 OWN - NLM STAT- MEDLINE DCOM- 20100413 LR - 20201217 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1217 IP - 8 DP - 2010 Feb 19 TI - On-line identification of 4''-isovalerylspiramycin I in the genetic engineered strain of S. spiramyceticus F21 by liquid chromatography with electrospray ionization tandem mass spectrometry, ultraviolet absorbance detection and nuclear magnetic resonance spectrometry. PG - 1419-24 LID - 10.1016/j.chroma.2009.12.072 [doi] AB - LC-hyphenated techniques were applied to the on-line identification of isovalerylspiramycin I (isp I), a spiramycin-like macrolide in the crude extract of fermentation broth from a genetically engineered strain of S. spiramyceticus F21. In the structural characterization of the large molecular secondary metabolite of isp I, LC-DAD-UV-ESI-MS(n) analysis played a crucial role, and stop-flow LC-(1)H NMR measurement, with bitespiramycin used as reference, was a valuable complement approach. This rational approach proved to be an efficient means for the rapid and accurate structural determination of known microbial secondary metabolites, by which targeted isolation of component(s) of interest can be subsequently performed for further biological and pharmacological studies in drug development. CI - Copyright 2009 Elsevier B.V. All rights reserved. FAU - Li, Jingyan AU - Li J AD - Key Laboratory of Biotechnology of Antibiotics, Ministry of Health, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100050, China. FAU - Ma, Chunyan AU - Ma C FAU - Wang, Hongyuan AU - Wang H FAU - Wang, Yinghong AU - Wang Y FAU - Wu, Linzhuan AU - Wu L FAU - Wang, Yiguang AU - Wang Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Validation Study DEP - 20100104 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 8025-81-8 (Spiramycin) RN - K5E0V85NB9 (carrimycin) SB - IM MH - Chromatography, Liquid/economics/*methods MH - Magnetic Resonance Spectroscopy/economics/*methods MH - Sensitivity and Specificity MH - Spectrometry, Mass, Electrospray Ionization/economics/*methods MH - Spiramycin/*analogs & derivatives/analysis MH - Streptomyces/*chemistry/genetics MH - Tandem Mass Spectrometry/economics/methods MH - Time Factors EDAT- 2010/01/12 06:00 MHDA- 2010/04/14 06:00 CRDT- 2010/01/12 06:00 PHST- 2009/04/22 00:00 [received] PHST- 2009/11/26 00:00 [revised] PHST- 2009/12/22 00:00 [accepted] PHST- 2010/01/12 06:00 [entrez] PHST- 2010/01/12 06:00 [pubmed] PHST- 2010/04/14 06:00 [medline] AID - S0021-9673(09)01922-0 [pii] AID - 10.1016/j.chroma.2009.12.072 [doi] PST - ppublish SO - J Chromatogr A. 2010 Feb 19;1217(8):1419-24. doi: 10.1016/j.chroma.2009.12.072. Epub 2010 Jan 4.