Extended superfamily of short alcohol-polyol-sugar dehydrogenases: structural similarities between glucose and ribitol dehydrogenases

Autor: Hedvig von Bahr-Lindström, Wolfgang Ulmer, Klaus-Dieter Jany, Hans Jörnvall, Marion Fröschle
Rok vydání: 1984
Předmět:
Zdroj: FEBS Letters. 165:190-196
ISSN: 0014-5793
DOI: 10.1016/0014-5793(84)80167-2
Popis: The recently determined primary structure of glucose dehydrogenase from Bacillus megaterium was scanned by computerized comparisons for similarities with known polyol and alcohol dehydrogenases. The results revealed a highly significant similarity between this glucose dehydrogenase and ribitol dehydrogenase from Klebsiella aerogenes. Sixty-one positions of the 262 in glucose dehydrogenase are identical between these two proteins (23% identity), fitting into a homology alignment for the complete polypeptide chains. The extent of similarity is equivalent to that between other highly divergent but clearly related dehydrogenases (two zinc-containing alcohol dehydrogenases, 25% sorbitol and zinc-containing alcohol dehydrogenases, 25%; ribitol and non-zinc-containing alcohol dehydrogenases, 20%), and suggests an ancestral relationship between glucose and ribitol dehydrogenases from different bactera. The similarities fit into a previously suggested evolutionary scheme comprising short and long alcohol and polyol dehydrogenases, and greatly extend the former group to one composed of non-zinc-containing alcohol-polyol-glucose dehydrogenases.
Databáze: OpenAIRE