Hydroxymethylbilane Synthase

Hydroximetylbilansyntas

Svensk definition

Ett enzym som katalyserar tetrapolymeriseringen av monopyrrolen porfobilinogen till att ge hydroximetylbilanen preuroporfyrinogen (se uroporfyrinogener) i flera diskreta steg. Det är det tredje enzymet i åttaenzymsbiosyntesen av hem. Hos människor leder brist på detta enzym, kodat av HMBS- eller PBGD-genen, till en form av neurologisk porfyri, akut intermittent porfyri. EC 2.5.1.61.

Engelsk definition

An enzyme that catalyzes the tetrapolymerization of the monopyrrole PORPHOBILINOGEN into the hydroxymethylbilane preuroporphyrinogen (UROPORPHYRINOGENS) in several discrete steps. It is the third enzyme in the 8-enzyme biosynthetic pathway of HEME. In humans, deficiency in this enzyme encoded by HMBS (or PBGD) gene results in a form of neurological porphyria (PORPHYRIA, ACUTE INTERMITTENT). This enzyme was formerly listed as EC 4.3.1.8

Svenska synonymer

Inga svenska synonymer finns.

Engelska synonymer

Synthase, Hydroxymethylbilane Porphobilinogen Ammonia-Lyase Ammonia-Lyase, Porphobilinogen Porphobilinogen Ammonia Lyase Porphobilinogen Deaminase Deaminase, Porphobilinogen Preuroporphyrinogen Synthetase Synthetase, Preuroporphyrinogen Uroporphyrinogen I Synthase Synthase, Uroporphyrinogen I Hydroxymethylbilane Synthetase Synthetase, Hydroxymethylbilane Pre-uroporphyrinogen Synthetase Pre uroporphyrinogen Synthetase Synthetase, Pre-uroporphyrinogen