title: [Analysis on metabolic flux shift during guanosine fermentation].
abstract: Taking the typical metabolic control product-guanosine as an example, the method of metabolic flux shift investigation based on process multi-levels parameter correlation analysis was established. The metabolic pathway, multi-parameter correlation, accumulation of amino acid and organic acid during guanosine fermentation process were integratively analyzed. The metabolic flux shift from HMP to EMP was ascertained, which was assumed to be caused by the accumulation of ammonium ion. The subsequent optimization based on controlling flux distribution between EMP and HMP did improve the yield by 35% when the metabolic flux shift was prevented.
authors.affiliation: State Key Laboratory of Bioreactor Engineering, ECUST, National Engineering Research Center for Biotechnology, Shanghai 200237, China.
authors.forename: Xian-Peng
authors.initials: XP
authors.lastname: Cai
authors.forename: Shuang-Xi
authors.initials: SX
authors.lastname: Chen
authors.forename: Ju
authors.initials: J
authors.lastname: Chu
authors.forename: Ying-Ping
authors.initials: YP
authors.lastname: Zhuang
authors.forename: Si-Liang
authors.initials: SL
authors.lastname: Zhang
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D000641:Ammonia / Q000378:metabolism; D005285:Fermentation; D006151:Guanosine / Q000378:metabolism*
chemical_list: D000596:Amino Acids; D006151:Guanosine; D000641:Ammonia