a, human GALK (1wuu, green) aligned with human MVK (1kvk, orange), red arrow: L1 loop of GALK; blue arrow: L1 loop of MVK; AMPPNP in red color was the molecule from GALK structure; ATP in gray color was the molecule from MVK structure. b. human GALK (1wuu, green) aligned with HK (1fwk, maroon), red arrow: L1 loop of GALK; blue arrow: L1 loop of MVK; AMPPNP in red color was the molecule from GALK structure; ADP in light purple color was the molecule from HK structure. c. Residues which are different in ATP binding pocket of GALK. d. Residues which are different in ATP binding pocket of GALK.