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EC Number Crystallization (Commentary)
Display the reaction diagram Show all sequences with the cofactors iron, alpha-ketoglutarate, and the nonreactive enantiomer of the substrate, ent-1-deoxypentalenic acid, in four different crystal forms to up to 1.31 A resolution. The overall structure of PtlH forms a double-stranded barrel helix fold and the cofactor-binding site for iron and alpha-keto-glutarate is similar to other double-stranded barrel helix fold enzymes. Binding of the substrate enantiomer induces a reorganization of the monoclinic crystal lattice leading to a disorder-order transition of a C-terminal alpha-helix. The newly formed helix blocks the major access to the active site and effectively traps the bound substrate
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