An enzyme which leads to the formation of glycogen according to the equation: UDPG + primer → UDP + glucosyl α (1 → 4) primer has been studied. The optimal conditions for activity were determined with a partially purified preparation from rat muscle. The reaction requires the presence of a polysaccharide as primer and is strongly activated by hexose 6-phosphates. Using UDPG labeled in the glucose moiety, it was found that the radioactivity was transferred to the glycogen from which it could be removed as maltose with β-amylase or as G-1-P with phosphorylase. Thus it seems that the glucose residue becomes linked α (1 → 4) to the polysaccharide. Several inhibitors were tested as well as the occurrence of the enzyme in different organs. © 1959.
Documento: | Artículo |
Título: | Biosynthesis of glycogen from uridine diphosphate glucose |
Autor: | Leloir, L.F.; Olavarría, J.M.; Goldemberg, S.H.; Carminatti, H. |
Filiación: | Instituto de Investigaciones Bioquímicas Fundación Campomar, Facultad de Ciencias Exactas y Naturales, ôbligado 2490 Buenos Aires, Argentina |
Palabras clave: | glycogen; nucleoside; nucleotide; article; GLYCOGEN/metabolism; metabolism; muscle; MUSCLES/metabolism; NUCLEOSIDES AND NUCLEOTIDES/metabolism; GLYCOGEN/metabolism; MUSCLES/metabolism; NUCLEOSIDES AND NUCLEOTIDES/metabolism; Glycogen; Muscles; Nucleosides; Nucleotides |
Año: | 1959 |
Volumen: | 81 |
Número: | 2 |
Página de inicio: | 508 |
Página de fin: | 520 |
DOI: | http://dx.doi.org/10.1016/0003-9861(59)90232-2 |
Título revista: | Archives of Biochemistry and Biophysics |
Título revista abreviado: | Arch. Biochem. Biophys. |
ISSN: | 00039861 |
CODEN: | ABBIA |
CAS: | glycogen, 9005-79-2; Glycogen, 9005-79-2; Nucleosides; Nucleotides |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00039861_v81_n2_p508_Leloir |