Biomaterial Database

Glycogen synthase in prenatal rat liver. 1985

R N Margolis

Glycogen synthase first appears in significant levels in fetal rat liver on day 18 of gestation (22 day term), but in a mostly inactive, phospho- form. This was reflected in a decreased affinity for its allosteric activator (increased A0.5 for glucose-6-phosphate), and with limited glycogen synthesis and accumulation. Peak glycogen synthesis occurs on day 21 of gestation, and glycogen synthase is in a more dephospho-form with decreased A0.5 for G6P and increased -G6P/+G6P activity ratio. The data suggest that a significant change in phosphorylation state of synthase occurs in late gestation to facilitate the large increase in glycogen synthesis and accumulation.

UI	MeSH Term	Description	Entries
D007700	Kinetics	The rate dynamics in chemical or physical systems.
D008099	Liver	A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.	Livers
D008112	Liver Glycogen	Glycogen stored in the liver. (Dorland, 28th ed)	Hepatic Glycogen,Glycogen, Hepatic,Glycogen, Liver
D011247	Pregnancy	The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	Gestation,Pregnancies
D005260	Female		Females
D005333	Fetus	The unborn young of a viviparous mammal, in the postembryonic period, after the major structures have been outlined. In humans, the unborn young from the end of the eighth week after CONCEPTION until BIRTH, as distinguished from the earlier EMBRYO, MAMMALIAN.	Fetal Structures,Fetal Tissue,Fetuses,Mummified Fetus,Retained Fetus,Fetal Structure,Fetal Tissues,Fetus, Mummified,Fetus, Retained,Structure, Fetal,Structures, Fetal,Tissue, Fetal,Tissues, Fetal
D005865	Gestational Age	The age of the conceptus, beginning from the time of FERTILIZATION. In clinical obstetrics, the gestational age is often estimated from the onset of the last MENSTRUATION which is about 2 weeks before OVULATION and fertilization. It is also estimated to begin from fertilization, estrus, coitus, or artificial insemination.	Embryologic Age,Fetal Maturity, Chronologic,Chronologic Fetal Maturity,Fetal Age,Maturity, Chronologic Fetal,Age, Embryologic,Age, Fetal,Age, Gestational,Ages, Embryologic,Ages, Fetal,Ages, Gestational,Embryologic Ages,Fetal Ages,Gestational Ages
D006006	Glycogen Synthase	An enzyme that catalyzes the transfer of D-glucose from UDPglucose into 1,4-alpha-D-glucosyl chains. EC 2.4.1.11.	Glycogen (Starch) Synthase,Glycogen Synthetase,Glycogen Synthase I,Synthase D,Synthase I,UDP-Glucose Glycogen Glucosyl Transferase,Synthase, Glycogen,Synthetase, Glycogen,UDP Glucose Glycogen Glucosyl Transferase
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D051381	Rats	The common name for the genus Rattus.	Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus