细胞内细胞外Fermentation已糖转运蛋白葡萄糖EMP途径果糖CH-CO-COOH(丙酮酸)TPP乙醛途径CH,-CO-COOH-TPP(活性丙酮酸)丙酮酸脱羧酶CO,CO,WCH,CHO-TPP(活性乙醛)TPPCH,-CHO(乙醛)NADH,乙醇脱氢酶NADCHCH,OH乙醇4W(乙醇)
Fermentation 乙醛途径
2.3 其它已糖的发酵CH,OHHOCH,2.3.1 Fructose (果糖HOOHHHOHFructoseATP已糖激酶hexokinaseADP4-O,POCHCH,OH0HOHOHHOHFructose-6phosphateGlycolysis
2.3 其它已糖的发酵 2.3.1 Fructose(果糖) 已糖激酶
FermentationofGalactose(半乳糖)CH,OHCH,OHCH,OHADPATPHOOHOOHHH11HHHOOHLOHOHHgalactokinaseHOPOFHOUridineOHeHOHOHOHO-UDP-glucoseGalactoseGalactose-l-phosphate/3UDP-galactose-galactose-1-phosphateauridylyl transferase4-epimeraseNAD+CH,OHCH,OHH00HO4SFHOOOHOHHOPOSHOHOP0O-UridineHOHHOHOOGlucose-1-phosphate (GiP)UDP-galactosephosphoglucomutaseCH,OPOeHGlycolysisOHOHHOHOHGlucose-6-phosphate(G6P)
Fermentation of Galactose(半乳糖)
2.3 其它已糖的发酵2.3.3Mannose.(甘露糖)CHOHCHOPOADPATPHF0H0.H-2OPOCH20CH,OH12HHOH HOOH HOKHHOhexokinasephosphomannoseHOOHHOOHOHisomeraseCHOHHHHHFructose-6-phosphate (F6P)MannoseMannose-6-phosphate已糖激酶磷酸甘露糖异构酶
2.3.3 Mannose.(甘露糖) 已糖激酶 磷酸甘露糖异构酶 2.3 其它已糖的发酵
2.4酒精发酵的副产物2.4.1 甘油的聚集有SO,存在时,与乙醛反应,不能产生乙醇;磷酸二羟丙酮(DHAP)就成为电子的最后受体,还原为3-磷酸甘油,它再脱磷酸生成甘油CH2OH3-phyosphoglycerolCH2OH3-phosphoglycerolCH2OHdehydrogenaseesteraseC-OCH-OHCH-OHCH2OPO3' NADH +H* NAD*Po,2CH2OPO:2CH20H磷酸二羟丙酮甘油3-磷酸甘油3-磷酸甘油脱氢酶3-磷酸甘油酯酶
2.4 酒精发酵的副产物 2.4.1 甘油的聚集 有SO2存在时,与乙醛反应,不能产生乙醇;磷酸二羟丙酮 (DHAP)就成为电子的最后受体,还原为3-磷酸甘油,它再 脱磷酸生成甘油 磷酸二羟丙酮 3-磷酸甘油 甘油 3-磷酸甘油脱氢酶 3-磷酸甘油酯酶 CH2OH C O CH2OPO3 2- CH2OH CH2OPO3 2- CH OH CH2OH CH OH CH2OH 3-phyosphoglycerol dehydrogenase 3-phosphoglycerol esterase NAD NADH H + + + PO3 2-