ArticleThe Journal of biological chemistry2014
Quantitative aspects of cGMP phosphodiesterase activation in carp rods and cones.
Article in The Journal of biological chemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
9 citing papers in PubMed, 16 citations in OpenAlex.
- Mathematical analysis of phototransduction reaction parameters in rods and cones.Scientific reports · 2022Article
- Article
- Transducin activates cGMP phosphodiesterase by trapping inhibitory γ subunit freed reversibly from the catalytic subunit in solution.Scientific reports · 2019Article
- Multi-scale, numerical modeling of spatio-temporal signaling in cone phototransduction.PloS one · 2019Article
- Origins of the phototransduction delay as inferred from stochastic and deterministic simulation of the amplification cascade.Molecular vision · 2017Article
- Purification of cone outer segment for proteomic analysis on its membrane proteins in carp retina.PloS one · 2017Article
- Phosphorylation-independent suppression of light-activated visual pigment by arrestin in carp rods and cones.The Journal of biological chemistry · 2015Article
- Activation and quenching of the phototransduction cascade in retinal cones as inferred from electrophysiology and mathematical modeling.Molecular vision · 2015Article
- Difference in the gain in the phototransduction cascade between rods and cones in carp.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2014Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cones are less light-sensitive than rods. We showed previously in carp that more light (>100-fold) is required in cones than in rods to activate 50% of cGMP phosphodiesterase (PDE). The lower effectiveness of PDE activation in carp cones is due partly to the fact that the activation rate of transducin (Tr) by light-activated visual pigment (R*) is 5-fold lower in carp cones than in rods. In this study, we tried to explain the remaining difference. First, we examined the efficiency of activation of PDE by activated Tr (Tr*). By activating PDE with known concentrations of the active (guanosine 5'-Ο-(γ-thio)triphosphate (GTPγS)-bound) form of Tr*, we found that Tr* activated PDE at a similar efficiency in rods and cones. Next, we examined the contribution of R* and Tr* lifetimes. In a comparison of PDE activation in the presence (with GTP) and absence (with GTPγS) of Tr* inactivation, PDE activation required more light (and was therefore less effective) when Tr* was inactivated in both rod and cone membranes. This is probably because inactivation of Tr* shortened its lifetime, thereby reducing the number of activated PDE molecules. The effect of Tr* inactivation was larger in cones, probably because the lifetime of Tr* is shorter in cones than in rods. The shorter lifetimes of Tr* and R* in cones seem to explain the remaining difference in the effectiveness of PDE activation between rods and cones.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.