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  • 11.0 [archived version]
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ARRB1 ARRB1 SAG SAG RHO RHO ARRB2 ARRB2 RCVRN RCVRN GUCA1A GUCA1A GRK7 GRK7 GRK1 GRK1 NCALD NCALD HPCA HPCA NCS1 NCS1
"GRK1" - Rhodopsin kinase in Homo sapiens
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Predicted Interactions
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GRK1Rhodopsin kinase; Retina-specific kinase involved in the signal turnoff via phosphorylation of rhodopsin (RHO), the G protein- coupled receptor that initiates the phototransduction cascade. This rapid desensitization is essential for scotopic vision and permits rapid adaptation to changes in illumination; Belongs to the protein kinase superfamily. AGC Ser/Thr protein kinase family. GPRK subfamily (563 aa)    
Predicted Functional Partners:
RHO
Rhodopsin; Photoreceptor required for image-forming vision at low light intensity. Required for photoreceptor cell viability after birth. Light-induced isomerization of 11-cis to all-trans retinal triggers a conformational change leading to G-protein activation and release of all-trans retinal; Belongs to the G-protein coupled receptor 1 family. Opsin subfamily (348 aa)
     
  0.999
RCVRN
Recoverin; Seems to be implicated in the pathway from retinal rod guanylate cyclase to rhodopsin. May be involved in the inhibition of the phosphorylation of rhodopsin in a calcium-dependent manner. The calcium-bound recoverin prolongs the photoresponse; EF-hand domain containing (200 aa)
     
  0.998
SAG
S-arrestin; Arrestin is one of the major proteins of the ros (retinal rod outer segments); it binds to photoactivated- phosphorylated rhodopsin, thereby apparently preventing the transducin-mediated activation of phosphodiesterase (405 aa)
     
 
  0.988
NCS1
Neuronal calcium sensor 1; Neuronal calcium sensor, regulator of G protein-coupled receptor phosphorylation in a calcium dependent manner. Directly regulates GRK1 (RHOK), but not GRK2 to GRK5. Can substitute for calmodulin (By similarity). Stimulates PI4KB kinase activity (By similarity). Involved in long-term synaptic plasticity through its interaction with PICK1 (By similarity). May also play a role in neuron differentiation through inhibition of the activity of N- type voltage-gated calcium channel (By similarity); Belongs to the recoverin family (190 aa)
     
 
  0.970
ARRB2
Beta-arrestin-2; Functions in regulating agonist-mediated G-protein coupled receptor (GPCR) signaling by mediating both receptor desensitization and resensitization processes. During homologous desensitization, beta-arrestins bind to the GPRK-phosphorylated receptor and sterically preclude its coupling to the cognate G- protein; the binding appears to require additional receptor determinants exposed only in the active receptor conformation. The beta-arrestins target many receptors for internalization by acting as endocytic adapters (CLASPs, clathrin-associated sorting proteins) and rec [...] (430 aa)
         
  0.938
ARRB1
Beta-arrestin-1; Functions in regulating agonist-mediated G-protein coupled receptor (GPCR) signaling by mediating both receptor desensitization and resensitization processes. During homologous desensitization, beta-arrestins bind to the GPRK-phosphorylated receptor and sterically preclude its coupling to the cognate G- protein; the binding appears to require additional receptor determinants exposed only in the active receptor conformation. The beta-arrestins target many receptors for internalization by acting as endocytic adapters (CLASPs, clathrin-associated sorting proteins) and rec [...] (418 aa)
         
  0.909
HPCA
Neuron-specific calcium-binding protein hippocalcin; Calcium-binding protein that may play a role in the regulation of voltage-dependent calcium channels. May also play a role in cyclic-nucleotide- mediated signaling through the regulation of adenylate and guanylate cyclases (By similarity); Belongs to the recoverin family (193 aa)
     
 
  0.863
GRK7
Rhodopsin kinase; Retina-specific kinase involved in the shutoff of the photoresponse and adaptation to changing light conditions via cone opsin phosphorylation, including rhodopsin (RHO) (553 aa)
         
0.813
NCALD
Neurocalcin-delta; May be involved in the calcium-dependent regulation of rhodopsin phosphorylation. Binds three calcium ions; EF-hand domain containing (193 aa)
     
 
  0.784
GUCA1A
Guanylyl cyclase-activating protein 1; Stimulates retinal guanylyl cyclase when free calcium ions concentration is low and inhibits guanylyl cyclase when free calcium ions concentration is elevated. This Ca(2+)-sensitive regulation of retinal guanylyl cyclase is a key event in recovery of the dark state of rod photoreceptors following light exposure; EF-hand domain containing (201 aa)
     
 
  0.782
Your Current Organism:
Homo sapiens
NCBI taxonomy Id: 9606
Other names: H. sapiens, Homo sapiens, human, man
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