GRK1 Recombinant Human Protein

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GRK1 is a member of the guanine nucleotide-binding protein (G protein)-coupled receptor kinase subfamily of the Ser/Thr protein kinases. GRK1 mediates rapid desensitization of rod photoreceptors to light by catalyzing phosphorylation of the visual pigment rhodopsin which leads to its deactivation. Defects in GRK1 are known to cause Oguchi disease 2 (also known as stationary night blindness Oguchi type-2). GRK1 can be phosphorylated by PKA and this reduces the ability of GRK1 to phosphorylate rhodopsin in vitro. It is speculated that phosphorylation of GRK1 by PKA in vivo occurs in the dark when cAMP levels in photoreceptor cells are elevated. Full-length recombinant human GRK1 was expressed by baculovirus in Sf9 insect cells using an N-terminal GST tag.

• Validated in LanthaScreen® Kinase Binding Assay
• Protocols available for simple use and optimized performance
• Multiple pack sizes available for convenient use

Related Product:
LanthaScreen® Eu Kinase Binding Assay
For Research Use Only. Not for use in diagnostic procedures.


Species: Human
Gene Aliases: GPRK1, RHOK, RK
Kinase Group: Serine/Threonine Kinase
Product Size: 1 mg
Molecular Weight: 89.8 kDa
Validated Application: Kinase Assay
Protein Tag or Fusion: GST Tag

Contents & storage

Storage Buffer: 50 mM Tris-HCl pH 7.5, 150 mM NaCl, 0.25 mM DTT, 10 mM glutathione, 0.1 mM EDTA, 0.1 mM PMSF, 25% glycerol

Store at -68 to -85°C. Aliquot at first use to avoid multiple freeze-thaws.


Manuals & protocols