|
Figure 5.
Fig. 5. Diagramofesentialresiduesthatcontribtetonucleotidebindingndcatalysis. A: Inhibitorternarycomplex. Dis-
tancesaretakenfromtheternarycomplexof C:IPZO:ATP (Zhengetal.,1993~).Thecrystalsweresoaked in MnZ*, andboth
theinhibitorandtheactivatingmetalsareshown (++) (Zhengetal., 1993~).The activating metal bridges the p- andy-phosphates,
whereastheinhibitorymetalbridgesthe Y- andy-phospates.Thearrowbridgesthemethylsidechain f theP-siteAlaand
they-phosphate of ATP. B: Substrateternarycomplex. C: Phosphorylatedsubstratebinarycomplex.
|