Characterization and Chromosomal Localization of the Gene for Human Rhodopsin Kinase
Copyright policy )Characterization and Chromosomal Localization of the Gene for Human Rhodopsin Kinase
G-protein-dependent receptor kinases (GRKs) play a key role in the adaptation of receptors to persistent stimuli. In rod photoreceptors rhodopsin kinase (RK) mediates rapid desensitization of rod photoreceptors to light by catalyzing phosphorylation of the visual pigment rhodopsin. To study the structure and mechanism of GRKs in human photoreceptors, we have isolated and characterized cDNA and genomic clones derived from the human RK locus using a bovine rhodopsin kinase cDNA fragment as a probe. The RK locus, assigned to chromosome 13 band q34, is composed of seven exons that encode a protein 92% identical in amino acid sequence to bovine rhodopsin kinase. The marked difference between the structure of this gene and that of another recently cloned human GRK gene suggests the existence of a wide evolutionary gap between members of the GRK gene family.
- Harvard University United States
- Massachusetts Eye and Ear Infirmary United States
DNA, Complementary, Base Sequence, Chromosomes, Human, Pair 13, Sequence Homology, Amino Acid, G-Protein-Coupled Receptor Kinase 1, Molecular Sequence Data, Chromosome Mapping, Exons, Hybrid Cells, Introns, Cell Line, Retinal Rod Photoreceptor Cells, Animals, Humans, Cattle, Amino Acid Sequence, Eye Proteins, Protein Kinases
DNA, Complementary, Base Sequence, Chromosomes, Human, Pair 13, Sequence Homology, Amino Acid, G-Protein-Coupled Receptor Kinase 1, Molecular Sequence Data, Chromosome Mapping, Exons, Hybrid Cells, Introns, Cell Line, Retinal Rod Photoreceptor Cells, Animals, Humans, Cattle, Amino Acid Sequence, Eye Proteins, Protein Kinases
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