1FPB:
reference: Crystal structure of the neutral form of fructose 1,6-bisphosphatase complexed with regulatory inhibitor fructose 2,6-bisphosphate at 2.6-A resolution., Liang JY, Huang S, Zhang Y, Ke H, Lipscomb WN, Proc Natl Acad Sci U S A 1992 Mar 15;89(6):2404-8. PMID: 1312721

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