| hydrogenium | <chemistry> Hydrogen; called also in view of its supposed metallic nature. Origin: NL. See Hydrogen. Source: Websters Dictionary (01 Mar 1998) |
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| hydrogenize | <chemistry> To combine with hydrogen; to treat with, or subject to the action of, hydrogen; to reduce; contrasted with oxidize. Origin: Hydrogenised; Hydrogenising. Source: Websters Dictionary (01 Mar 1998) |
| hydrogenlyase | <enzyme> An enzyme which oxidizes hydrogen (removes its electrons) and attaches it to another molecule. (09 Oct 1997) |
| hydrogenobyrinic acid synthase | <enzyme> Pseudomonas denitrificans enzyme which is proposed to transfer a methyl group from c-11 to c-12 of precorrin-8x Registry number: EC 5.4.99.- Synonym: cobh gene product (26 Jun 1999) |
| hydrogenosome | <cell biology> Organelle found in certain anaerobic trichomonad and some ciliate protozoa: contains hydrogenase and produces hydrogen from glycolysis. Origin: Gr. Soma = body (05 May 1997) |
| hydrogensulfite reductase | <enzyme> Catalyses the reduction of sulfite mainly to trithionate with concomitant formation of thiosulfate and sulfide in the dissimilatory sulfate reduction pathway; see also trithionate reductase system Registry number: EC 1.8.99.3 Synonym: bisulfite reductase, dissimilatory sulfite reductase, desulfoviridin, desulforubidin, desulfofuscidin (26 Jun 1999) |