Cloning of human genes encoding novel G protein-coupled receptors.
We report the isolation and characterization of several novel human genes encoding G protein-coupled receptors. Each of the receptors contained the familiar seven transmembrane topography and most closely resembled peptide binding receptors. Gene GPR1 encoded a receptor protein that is intronless in the coding region and that shared identity (43% in the transmembrane regions) with the opioid receptors. Northern blot analysis revealed that GPR1 transcripts were expressed in the human hippocampus, and the gene was localized to chromosome 15q21.6. Gene GPR2 encoded a protein that most closely resembled an interleukin-8 receptor (51% in the transmembrane regions), and this gene, not expressed in the six brain regions examined, was localized to chromosome 17q21.1-q21.3. A third gene, GPR3, showed identity (56% in the transmembrane regions) with a previously characterized cDNA clone from rat and was localized to chromosome 1p35-p36.1.
Addiction Research Foundation, Toronto, Ontario, Canada.
A
A
Marchese
J M
JM
Docherty
T
T
Nguyen
M
M
Heiber
R
R
Cheng
H H
HH
Heng
L C
LC
Tsui
X
X
Shi
S R
SR
George
B F
BF
O'Dowd
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D015152:Blotting, Northern; D001921:Brain / Q000378:metabolism*; D002460:Cell Line; D002522:Chlorocebus aethiops; D002874:Chromosome Mapping; D002878:Chromosomes, Human, Pair 1; D002884:Chromosomes, Human, Pair 15; D002886:Chromosomes, Human, Pair 17; D003001:Cloning, Molecular; D017931:DNA Primers; D019204:GTP-Binding Proteins / Q000235:genetics*; D015870:Gene Expression; D006624:Hippocampus / Q000378:metabolism*; D015186:Hominidae / Q000235:genetics*; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007438:Introns; D008214:Lymphocytes / Q000378:metabolism; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D051381:Rats; D011956:Receptors, Cell Surface / Q000235:genetics*; D018123:Receptors, Interleukin / Q000235:genetics; D023062:Receptors, Interleukin-8A; D017386:Sequence Homology, Amino Acid; D014158:Transcription, Genetic; D014162:Transfection
D017931:DNA Primers; D011956:Receptors, Cell Surface; D018123:Receptors, Interleukin; D023062:Receptors, Interleukin-8A; D019204:GTP-Binding Proteins