Results 1 to 10 of about 5,120 (161)

Porphyria cutanea tarda and hepatoerythropoietic porphyria: Identification of 19 novel uroporphyrinogen III decarboxylase mutations [PDF]

open access: greenMolecular Genetics and Metabolism, 2019
Porphyria Cutanea Tarda (PCT) is a cutaneous porphyria that results from the hepatic inhibition of the heme biosynthetic enzyme uroporphyrinogen decarboxylase (UROD), and can occur either in the absence or presence of an inherited heterozygous UROD mutation (PCT subtypes 1 and 2, respectively).
Yedidyah Weiss   +5 more
europepmc   +7 more sources

Order of uroporphyrinogen III decarboxylation on incubation of porphobilinogen and uroporphyrinogen III with erythrocyte uroporphyrinogen decarboxylase [PDF]

open access: bronzeBiochemical Journal, 1993
The isomeric compositions of the heptacarboxylic, hexacarboxylic and pentacarboxylic porphyrinogens formed by incubation of porphobilinogen with human red-cell haemolysates have been analysed and compared with those derived from incubation with chemically prepared uroporphyrinogen III as substrate.
J, Luo, C K, Lim
semanticscholar   +5 more sources

Decarboxylation of uroporphyrinogen III by erythrocyte uroporphyrinogen decarboxylase. Evidence for a random decarboxylation mechanism [PDF]

open access: bronzeBiochemical Journal, 1990
The isomeric composition of type-III heptacarboxylic porphyrinogens derived from decarbosylation of uroporphyrinogen III by erythrocyte uroporphyringogen decarboxylase was analysed by h.p.l.c. with electrochemical detection. All four possible isomers were identified, and there were little differences in the proportion of isomers formed by erythrocytes ...
J, Luo, C K, Lim
semanticscholar   +5 more sources

Crystal Structure and Substrate Binding Modeling of the Uroporphyrinogen-III Decarboxylase from Nicotiana tabacum [PDF]

open access: hybridJournal of Biological Chemistry, 2001
The enzymatic catalysis of many biological processes of life is supported by the presence of cofactors and prosthetic groups originating from the common tetrapyrrole precursor uroporphyrinogen-III.
Berta M. Martins   +4 more
semanticscholar   +4 more sources

Coexistence of Deficiencies of Uroporphyrinogen III Synthase and Decarboxylase in a Patient with Congenital Erythropoietic Porphyria and in His Family [PDF]

open access: greencclm, 1997
A hitherto undescribed dual deficiency of uroporphyrinogen III synthase and uroporphyrinogen decarboxylase was observed in the erythrocytes in a 14 year-old patient who had presented with congenital erythropoietic porphyria since early childhood. Whereas congenital erythropoietic porphyria was metabolically and clinically overt, a hereditary deficiency
Freesemann, Anne G.   +2 more
semanticscholar   +6 more sources

Investigations of rat liver uroporphyrinogen decarboxylase. Comparisons of porphyrinogens I and III as substrates and the inhibition by porphyrins [PDF]

open access: bronzeBiochemical Journal, 1981
1. The decarboxylations of uroporphyrinogens, hepta-, hexa- and penta-carboxyporphyrinogens I and III by porphyrinogen carboxy-lyase (EC 4.1.1.37) in rat liver supernatant have been compared as functions of substrate concentrations. Although Km and Vmax.
A G, Smith, J E, Francis
semanticscholar   +5 more sources

Direct Assay of Enzymes in Heme Biosynthesis for the Detection of Porphyrias by Tandem Mass Spectrometry. Uroporphyrinogen Decarboxylase and Coproporphyrinogen III Oxidase [PDF]

open access: greenAnalytical Chemistry, 2008
We report new assays of enzymes uroporphyrinogen decarboxylase (UROD) and coproporphyrinogen III oxidase (CPO) in the heme biosynthetic pathway. The assays were developed for use in clinical diagnostics of inherited disorders porphyria cutanea tarda and hereditary coproporphyria, respectively. Electrospray ionization tandem mass spectrometry is used to
Yuesong, Wang   +5 more
semanticscholar   +4 more sources

Home - About - Disclaimer - Privacy