Ribokinase

spinqualitylabelsall models Ribokinase dimer complexed with ribose, ATP and Na+ ion (PDB id 6ils) Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Function Ribokinase (RK) catalyzes the first step of ribose metabolism by phosphorylating it at the O5' position . ATP serves as the co-substrate of RK. Structural highlights Upon forming a ternary complex of RK, ribose and nucleotide the RK dimer changes its open form to a closed one. The ribose substrate is seen between a small β-sheel domain and the concave side of the central β sheet. The ribose binding site is lined with charged residues. Water molecules are shown as red spheres. The ATP binding site is surrounded by hydrophobic residues. Na coordination site. Ribokinase 3D structures Ribokinase 3D structures

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