Subunit communication in tetrameric class 2 human liver aldehyde dehydrogenase as the basis for half-of-the-site reactivity and the dominance of the oriental subunit in a heterotetramer.

Abstract excerpt

Data has been published showing that in heterotetrameric liver mitochondrial aldehyde dehydrogenase composed of the active (E487) and the inactive Oriental-variant (K487) subunit, the Oriental variant was dominant and caused the inactivation of the E487 subunit. The published structures of the enzyme showed that the glutamate at position 487 is salt bonded to an arginine (475) in a different subunit. Arg475 was...

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