Frozen sections of retinas from rabbit (mostly rods), ground squirrel (mostly cones), and
monkey (mixed rods and cones) were freeze dried, and samples from all the discrete layers …

Guanylate kinase (EC 2.7. 4.8) catalyzing the reaction GMP+ ATP= GDP+ ADP, was purified
to homogeneity from bovine retina. Using oligonucleotides based on the amino acid …

The presence of three soluble nucleotide phosphotransferases in bovine rod outer
segments was demonstrated: guanylate kinase (EC 2.7. 4.8), nucleoside‐diphosphate …

The activities of guanylate cyclase, guanosine 3', 5'-monophosphate (cyclic GMP)
phosphodiesterase and 5'-nucleotidase were measured during postnatal development in …

Extremely high activities of guanylate cyclase [l] and guanosine cyclic 3', 5'monophosphate
(cGMP) phosphodiesterase [2], the enzymes of cGMP formation and degradation have been …

Guanylate cyclase activity of dark‐adapted bovine rod outer segments demonstrates a
biphasic pattern upon exposure to light. By 10 s of illumination, activity is 20% lower than …

Guanylate cyclase activity was measured in disrupted rod outer segments of the toad retina.
The experiments showed that cGMP is synthesized from GTP at a rate of 3±1 nmol min per …

The rod outer segments of toad retina contain a guanylate cyclase activity of about 3±1 nmol
of cGMP formed/min per mg protein. In darkness this value is largely independent of the Ca …

Guanylate cyclase (GTP pyrophosphate-lyase (cyclizing), EC 4.6. 1.2) of bovine retinal rod
outer segments is almost completely particulate, ie associated with rod outer segment …

In vertebrate retina, rod outer segment is the site of visual transduction. The inward cationic
current in the dark-adapted outer segment is regulated by cyclic GMP. A light flash on the …