磷酸甘露糖异构酶 (PMI)
磷酸甘露糖异构酶 (PMI) 通过催化甘露糖-6-磷酸 (Man-6-P) 转化为果糖-6-磷酸 (Fru-6-P), 或者使这两种糖之间以可逆方式相互转化, 在抗坏血酸 (AsA,也称为维生素 C)的生物合成中起着至关重要的作用。虽然植物中 AsA 生物合成的主要途径涉及 L-半乳糖途径，但 PMI 通过调节 GDP-甘露糖的可用性间接做出贡献, GDP-甘露糖是该途径中的关键前体。
Phosphomannose Isomerase(PMI)
Phosphomannose isomerase (PMI) plays a crucial role in the biosynthesis of ascorbic acid (AsA), also known as vitamin C, by catalyzing the conversion of mannose-6-phosphate (Man-6-P) to fructose-6-phosphate (Fru-6-P) or, alternatively, enabling the interconversion between these two sugars in a reversible manner. While the primary pathway for AsA biosynthesis in plants involves the L-galactose pathway, PMI contributes indirectly by regulating the availability of GDP-mannose, a key precursor in the pathway.
| 拟南芥(Arabidopsis thaliana) | AtPMI |
| 番茄(Solanum Lycopersicum) | SLPMI1(Solyc02g063220.3.1);SLPMI2(Solyc06g060100.3.1);SLPMI3(Solyc02g086090.4.1) |
| 葡萄(Vitis vinifera) | VvPMI(XP_034707777.1) |
| 中华猕猴桃'红阳' (Actinidia chinensis cv 'Hongyang') |
AcPMI1(Actinidia26306.t1);AcPMI2(Actinidia36324.t1);AcPMI3(Actinidia17639.t1) |
| 中华猕猴桃'Red5' (Actinidia chinensis cv 'Red5') |
AcPMI1(Acc03996.1);AcPMI2(Acc02238.1);AcPMI3(Acc30850.1) |
| 中华猕猴桃'东红' (Actinidia chinensis cv 'Donghong') |
AcPMI1(Ach03g04970DH);AcPMI2(Ach02g03280DH);AcPMI3(Ach27g04500DH) |
| 毛花猕猴桃'华特' (Actinidia eriantha 'White') |
AePMI1(DTZ79_03g16180);AePMI2(DTZ79_27g04220);AePMI3(DTZ79_02g10970) |
| 野生毛花猕猴桃 (Actinidia eriantha WT) |
AePMI1(evm.model.scaf_65.158);AePMI2(evm.model.scaf_18.261);AePMI3(evm.model.scaf_102.126);AePMI4(evm.model.scaf_48.175);AePMI5(evm.model.scaf_104.187);AePMI6(evm.model.scaf_42.360);AePMI7(evm.model.scaf_66.587);AePMI8(evm.model.scaf_70.187) |
| 毛花猕猴桃'赣绿1号' (Actinidia eriantha 'Ganlv1') |
AePMI1(Chr_01G1543.1);AePMI2(Chr_26G334.1);AePMI3(Chr_04G431.1);AePMI4(Chr_29G156.1) |
| 山梨猕猴桃(Actinidia rufa) | ArPMI1(lcl|BJWL01000267.1_prot_GFS36868.1_46718);ArPMI2(lcl|BJWL01000027.1_prot_GFZ18943.1_38751);ArPMI3(lcl|BJWL01000016.1_prot_GFZ03665.1_23473) |
| 阔叶猕猴桃(Actinidia latifolia) | AlfPMI1(Alf03g04820KY);AlfPMI2(Alf02g03370KY);AlfPMI3(Alf08g11360KY) |
| 苹果(Malus domestica) | MdPMI1(mRNA:MD09G1253100);MdPMI2(mRNA:MD17G1244800);MdPMI3(mRNA:MD13G1039700);MdPMI4(mRNA:MD16G1040600) |
| 梨(Pyrus pyrifolia) | PbPMI1(Pspp.Chr17.02146.1);PbPMI2(Pspp.Chr09.02072.1);PbPMI3(Pspp.Chr13.00324.1);PbPMI4(Pspp.Chr16.00335.1) |
| 桃(Prunus persica) | PpPMI1(P124PAN09647);PpPMI2(P124PAN16861) |
| 刺梨'贵农5号' (Rosa roxburghii Tratt 'Guinong5') |
RrPMI1(Rrox3g_024560.2);RrPMI2(Rrox6g_011170.1);RrPMI3(Rrox3g_037260.1);RrPMI4(Rrox6g_045000.2) |
| 枣(Ziziphus jujuba) | ZjPMI1(rna-XM_016025848.4);ZjPMI2(rna-XM_016028478.4) |
| 甜橙(Citrus sinensis) | CitPMI1(Cs_ont_6g004070.1);CitPMI2(Cs_ont_2g011400.1);CitPMI3(Cs_ont_6g004070.2); |
| 晚白柚(Citrus maxima) | CitPMI1(Cg6g019480.1);CitPMI2(Cg2g036120.1) |
| 椪柑(Citrus reticulata) | CitPMI1(Ponkan6g0003900.1);CitPMI2(Ponkan2g0022790.1) |
| 枳壳(Poncirus trifoliata) | CitPMI1(Pt6g000380.1);CiTPMI2(Pt2g020230.1) |
| 枸橼(Citrus medica L) | CitPMI1(Cm249960.1);CitPMI2(Cm210370.1);CitPMI3(Cm249960.2);CitPMI4(Cm304590.1) |