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??????,??????????????????,??????????????????“???????”????????1950????????????(???????????????????????cAMP?cGMP)?,???????????????????,????????????????????,????????????????????????,??????????????????,?????????????KomA(????????????????????????????A)?KomB(?????????B)?KomC(?????????C)???????,???(DNK)????“??”:KomA??DNK?????,??????????????????(dAMP)?????????????dITP??KomC?NAD⁺,????????????“????”???????????????????,????,????????????????????“??????????????????”?,??????“???”????????????,??

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