D-糖酸1，4-内酯 一水合物，S0375-1G

Measurement of Agonist-Stimulated [35S]GTPγS Binding to Assess Total G-Protein and Gα-Subtype-Specific Activation by G-Protein-Coupled Receptors

preparations, GTP can be substituted by 35 S-labeled guanosine 5′-O -(3-thio)triphosphate ([35 S]GTγS) and on agonist stimulation a stable [35 S]GTPγS-Gα complex will form and accumulate. Separation of 35 S-bound GTPγS-Gα complexes from free [35 S]GTPγS allows

Study of G-Protein-Coupled Receptor-Protein Interactions Using Gel Overlay Assays and Glutathione-S-Transferase-Fusion Protein Pull-Downs

Numerous recent studies have suggested that the predicted cytosolic domains of G-protein-coupled receptors (GPCRs) represent a surface for association with proteins that may serve multiple roles in receptor localization, turnover, and signaling

古洛糖酸 gulonic acid

醛酸的一种，L型相当于 L-古洛糖一位上的醛基被羧基置换的形态，或 D-葡糖醛酸的一位醛基变成醇基。在大多数动植物中，以古洛糖酸γ -内酯形态存在。古洛糖酸可由特异的氧化酶脱氢反应而变成维生素 C（ L-抗坏血酸）。因为人、猿、豚鼠中不具有这种酶，所以必须从外界摄取维生素 C。另一方面，则存在着 L-古洛糖酸→ 3-酮 -L-古洛糖酸→ L-木酮糖→ L-木糖醇→ D-木酮糖的代谢途径，代表性的戊糖尿症，可在尿中发现古洛糖酸的代谢中间物质 L-木酮糖。