Abstract
A clone encoding a human D2 dopamine receptor was isolated from a pituitary cDNA library and sequenced. The deduced protein sequence is 96% identical with that of the cloned rat receptor with one major difference: the human receptor contains an additional 29 amino acids in its putative third cytoplasmic loop. Southern blotting demonstrated the presence of only one human D2 receptor gene. Two overlapping phage containing the gene were isolated and characterized. DNA sequence analysis of these clones showed that the coding sequence is interrupted by six introns and that the additional amino acids present in the human pituitary receptor are encoded by a single exon of 87 base pairs. The involvement of this sequence in alternative splicing and its biological significance are discussed.
MeSH Terms
Amino Acid Sequence
Animals
Base Sequence
Binding, Competitive
Blotting, Southern
Cloning, Molecular
Corpus Striatum/metabolism
DNA/genetics
Domperidone/metabolism
Exons
Gene Library
Genes
Humans
Kinetics
Molecular Sequence Data
Pituitary Gland/metabolism
Rats
Receptors, Dopamine/genetics,metabolism
Receptors, Dopamine D2
Restriction Mapping
Sequence Homology, Nucleic Acid
Chemicals
Receptors, Dopamine
Receptors, Dopamine D2
Domperidone
DNA
Authors & Affiliations
10 authors, click to expand affiliations / ORCID
Grandy D K
Vollum Institute for Advanced Biomedical Research, Oregon Health Sciences University, Portland 97201.
Marchionni M A
Makam H
Stofko R E
Alfano M
Frothingham L
Fischer J B
Burke-Howie K J
Bunzow J R
Server A C
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