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Human galactokinase 1 monomer in complex with galactose and an analog of adenosine triphosphate

Cartoon diagram of a human galactokinase 1 monomer in complex with galactose (red) and an analog of adenosine triphosphate (orange). A magnesium ion is visible as a green sphere. (Illustration prepared by Fvasconcellos on August 8, 2008, to match orientation in the original paper: Thoden JB, Timson DJ, Reece RJ, Holden HM. Molecular structure of human galactokinase: implications for type II galactosemia. J Biol Chem 2005;280[10]:9662-70. Public domain.)