Abstract
The human angiotensin II (AII) type 1a receptor gene and its upstream control sequence has been cloned from a human leukocyte genomic library. The promoter element CAAT and TATA sequences were found at -602 and -538, respectively, upstream from the translational initiation site. The deduced protein sequence is homologous to rat and bovine AT1a receptors (94.7% and 95.3% identity). The expressed gene exhibited high-affinity AII and Dup753 binding and was functionally coupled to inositol phosphate turnover. Northern analysis of human tissues showed AT1 receptor mRNA expression in placenta, lung, heart, liver, and kidney. Using 5' untranslated and coding sequence as probes in a Southern blot analysis, it was established that another AT1 subtype exists in the human genome.
MeSH terms
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Amino Acid Sequence
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Angiotensin II / metabolism*
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Angiotensin II / pharmacology
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Animals
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Base Sequence
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Binding, Competitive
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Blotting, Northern
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Blotting, Southern
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Cell Line
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Cloning, Molecular
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DNA / genetics
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DNA / isolation & purification
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Humans
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Inositol Phosphates / metabolism
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Kinetics
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Molecular Sequence Data
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Organ Specificity
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Poly A / genetics
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Poly A / isolation & purification
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RNA / genetics
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RNA / isolation & purification
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RNA, Messenger
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Receptors, Angiotensin / genetics*
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Receptors, Angiotensin / isolation & purification
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Receptors, Angiotensin / metabolism
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Recombinant Proteins / isolation & purification
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Recombinant Proteins / metabolism
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Restriction Mapping
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Sequence Homology, Nucleic Acid
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Transfection
Substances
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Inositol Phosphates
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RNA, Messenger
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Receptors, Angiotensin
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Recombinant Proteins
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Angiotensin II
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Poly A
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RNA
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DNA