本酶催化的反应为UDP-Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala) + Undecaprenyl Phosphate = UMP + Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala)-Diphosphoundecaprenol,系统名称为UDP-MurAc(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala):undecaprenyl-Phosphate Phospho-N-Acetylmuramoyl-Pentapeptide-Transferase,在革兰氏阴性菌和一些革兰氏阳性菌中,L-赖氨酸被内消旋-2,6-二氨基庚二酸(meso-2,6-diaminopimelate,A2pm)替代,后者通过其 L-中心与相邻残基结合。所涉及的十一异戊二烯醇是 ditrans,octacis-十一异戊二烯醇(定义,
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