2.7.1.190 | more |
cofactor binding structures, conformations of triphosphate group in structures of APH(2'')-Ia with GTP, GDP, and GMPPNP, overview. Two hydrogen bonds are formed between the triphosphate and residues S214 of the Gly loop and Y237. The nucleoside cosubstrates bind in the cleft between the N lobe (residues 180-279) and C lobe (residues 280-479), and two magnesium ions, Mg1 and Mg2, are consistently resolved with coordinating water molecules |
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