1kv9
Structure at 1.9 A Resolution of a Quinohemoprotein Alcohol Dehydrogenase from Pseudomonas putida HK5
Structural highlights
FunctionQHED_PSEPU Catalyzes the dye-linked oxidation of primary alcohols to the corresponding aldehydes and the (subsequent) oxidation of the aldehydes to carboxylic acids. Exhibits activity with longer mono-alcohols (C-4 to C-7) but not with methanol or glycerol. Reacts with 1,2-propanediol and 1,3-propanediol but not with sugar alcohols such as D-sorbitol.[1] [2] [3] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe type II quinohemoprotein alcohol dehydrogenase of Pseudomonas putida is a periplasmic enzyme that oxidizes substrate alcohols to the aldehyde and transfers electrons first to pyrroloquinoline quinone (PQQ) and then to an internal heme group. The 1.9 A resolution crystal structure reveals that the enzyme contains a large N-terminal eight-stranded beta propeller domain (approximately 60 kDa) similar to methanol dehydrogenase and a small C-terminal c-type cytochrome domain (approximately 10 kDa) similar to the cytochrome subunit of p-cresol methylhydoxylase. The PQQ is bound near the axis of the propeller domain about 14 A from the heme. A molecule of acetone, the product of the oxidation of isopropanol present during crystallization, appears to be bound in the active site cavity. Structure at 1.9 A resolution of a quinohemoprotein alcohol dehydrogenase from Pseudomonas putida HK5.,Chen ZW, Matsushita K, Yamashita T, Fujii TA, Toyama H, Adachi O, Bellamy HD, Mathews FS Structure. 2002 Jun;10(6):837-49. PMID:12057198[4] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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