prolinhydroxylasa [Procollagen-Proline Dioxygenase]

tematický
3
Termíny

prolinhydroxyláza

 

Procollagen Prolyl 4-Hydroxylase
Protocollagen Prolyl Hydroxylase

Perzistentní odkaz   https://www.medvik.cz/link/D011393
Definice

Enzym, který katalyzuje hydroxylaci prolinu na hydroxyprolin. Jde o membránově vázaný enzym, jehož nezbytným kofaktorem je kyselina askorbová (vitamin C). V její nepřítomnosti v buňce nedochází k hydroxylaci prolinu v molekulách kolagenu, a proto nedochází ke vzniku stabilní terciární struktury kolagenových vláken. To je molekulární podstatou vzniku fragility pojivových tkání, která je typickým příznakem skorbutu. (cit. Velký lékařský slovník online, 2017 http://lekarske.slovniky.cz)

A mixed-function oxygenase that catalyzes the hydroxylation of a prolyl-glycyl containing peptide, usually in PROTOCOLLAGEN, to a hydroxyprolylglycyl-containing-peptide. The enzyme utilizes molecular OXYGEN with a concomitant oxidative decarboxylation of 2-oxoglutarate to SUCCINATE. The enzyme occurs as a tetramer of two alpha and two beta subunits. The beta subunit of procollagen-proline dioxygenase is identical to the enzyme PROTEIN DISULFIDE-ISOMERASES.

DUI
D011393 MeSH Prohlížeč
CUI
M0017694
CAS
Procollagen-L-proline,2-oxoglutarate:oxygen oxidoreductase
Předchozí užití
Hydroxylases (1966-1971)
Historická pozn.
94; was PROLINE HYDROXYLASE 1972-93 (Prov 1972-73); PROLINE,2-OXOGLUTARATE 4-DIOXYGENASE was PROLINE,2-OXOGLUTARATE DIOXYGENASE see PROLINE HYDROXYLASE 1977-93
Online pozn.
use PROCOLLAGEN-PROLINE DIOXYGENASE to search PROLINE HYDROXYLASE 1972-93 (as Prov 1972-73) & PROLINE,2-OXOGLUTARATE DIOXYGENASE 1977-93
Veřejná pozn.
94; was PROLINE HYDROXYLASE 1974-93; PROLINE,2-OXOGLUTARATE 4-DIOXYGENASE was PROLINE,2-OXOGLUTARATE DIOXYGENASE see PROLINE HYDROXYLASE 1977-93

D Chemikálie a léčiva
D08.811 enzymy 1 551
D08.811.682 oxidoreduktasy 446
D08.811.682.690 oxygenasy 76
D08.811.682.690.416 dioxygenasy 18
D08.811.682.690.416.617 prolyl-hydroxyláza 1
D08.811.682.690.416.617.500 prolyl-4-hydroxylasy HIF 12
D08.811.682.690.416.617.750 prolinhydroxylasa 3
D08.811.682.690.708 oxygenasy se smíšenou funkcí 68
D08.811.682.690.708.694 prolyl-hydroxyláza 1
D08.811.682.690.708.694.500 prolyl-4-hydroxylasy HIF 12
D08.811.682.690.708.694.750 prolinhydroxylasa 3

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