PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6295180-2 1983 GMP would be broken down to guanosine by the enzyme 5"-nucleotidase on the cytoplasmic (extradiscal) surface of the disks. guanosine 5'-monophosphorothioate 0-3 5'-nucleotidase Bos taurus 52-67 6295180-2 1983 GMP would be broken down to guanosine by the enzyme 5"-nucleotidase on the cytoplasmic (extradiscal) surface of the disks. Guanosine 28-37 5'-nucleotidase Bos taurus 52-67 6295180-3 1983 The presence of 5"-nucleotidase on the cytoplasmic surface was verified by using sucrose continuous gradients to show its association with the photoreceptors and by using disk preparation and concanavalin A binding to demonstrate its presence on the extradiscal surface. Sucrose 81-88 5'-nucleotidase Bos taurus 16-31 6295180-5 1983 The 5"-nucleotidase on the extradiscal surface is light insensitive, has a broad optimal pH range, shows a divalent cation dependence, and is competitively inhibited by nucleoside di- and triphosphates. nucleoside di- and triphosphates 169-201 5'-nucleotidase Bos taurus 4-19 6295180-6 1983 When the data determined experimentally were extrapolated to physiological conditions, we obtained a decay time constant for GMP breakdown by 5"-nucleotidase in the range of 0.4 to 1.06 s. This time constant is in the range of the time constants of the fall of rod cell receptor potential, suggesting a possible role for GMP level in visual transduction. guanosine 5'-monophosphorothioate 125-128 5'-nucleotidase Bos taurus 142-157 6295180-6 1983 When the data determined experimentally were extrapolated to physiological conditions, we obtained a decay time constant for GMP breakdown by 5"-nucleotidase in the range of 0.4 to 1.06 s. This time constant is in the range of the time constants of the fall of rod cell receptor potential, suggesting a possible role for GMP level in visual transduction. guanosine 5'-monophosphorothioate 321-324 5'-nucleotidase Bos taurus 142-157