What question did this study set out to answer?

To identify, clone, and characterize novel angiotensin II receptor subtypes in rat adrenal cortex tissue.

May 1, 1992Journal of Biological ChemistryOpen Access

Cloning and expression of a novel angiotensin II receptor subtype.

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Authors

KSKathryn SandbergGeorgetown University HJH JiNingbo University ACAdrian J. L. ClarkUniversity of London

Discussion

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Implication

Experimental study reveals a novel angiotensin II receptor subtype in rat adrenal tissue, highlighting distinct tissue distribution and functional regulation.

Key Points

To identify, clone, and characterize novel angiotensin II receptor subtypes in rat adrenal cortex tissue.
Amplified rat adrenal cortex cDNA using polymerase chain reaction primers designed from the known AT1 receptor sequence, followed by restriction enzyme analysis and DNA sequencing.
Screened an adrenal cortex library to isolate and sequence a full-length 2.2-kilobase pair cDNA clone.
Expressed the novel clone in Xenopus oocytes and COS-7 cells to assess agonist-induced calcium mobilization, pharmacological binding properties, and mRNA tissue distribution.
Identified a 2.2-kilobase pair cDNA encoding a novel receptor (AT3) with a molecular mass of 40,959 Da, showing 95% amino acid identity and 71% overall nucleotide similarity to the rat smooth muscle AT1 receptor.
Demonstrated that expressed AT3 receptors mediate agonist-induced Ca2+ mobilization in Xenopus oocytes and COS-7 cells while displaying pharmacological properties distinct from AT1 receptors.
Observed highest AT3 mRNA abundance in the adrenal cortex and pituitary, with structural analysis revealing two additional potential protein kinase C phosphorylation sites.

Cite This Study

Sandberg et al. (1992) studied this question.

synapsesocial.com/papers/6a6f779a75498292b708dc10 https://doi.org/10.1016/s0021-9258(19)50109-0

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May 1, 1992Journal of Biological ChemistryOpen Access

Cloning and expression of a novel angiotensin II receptor subtype.

View Full Paper

Ask AI

Bookmark

Authors

KSKathryn SandbergGeorgetown University HJH JiNingbo University ACAdrian J. L. ClarkUniversity of London

Discussion

Member takes

Implication

Experimental study reveals a novel angiotensin II receptor subtype in rat adrenal tissue, highlighting distinct tissue distribution and functional regulation.

Key Points

To identify, clone, and characterize novel angiotensin II receptor subtypes in rat adrenal cortex tissue.
Amplified rat adrenal cortex cDNA using polymerase chain reaction primers designed from the known AT1 receptor sequence, followed by restriction enzyme analysis and DNA sequencing.
Screened an adrenal cortex library to isolate and sequence a full-length 2.2-kilobase pair cDNA clone.
Expressed the novel clone in Xenopus oocytes and COS-7 cells to assess agonist-induced calcium mobilization, pharmacological binding properties, and mRNA tissue distribution.
Identified a 2.2-kilobase pair cDNA encoding a novel receptor (AT3) with a molecular mass of 40,959 Da, showing 95% amino acid identity and 71% overall nucleotide similarity to the rat smooth muscle AT1 receptor.
Demonstrated that expressed AT3 receptors mediate agonist-induced Ca2+ mobilization in Xenopus oocytes and COS-7 cells while displaying pharmacological properties distinct from AT1 receptors.
Observed highest AT3 mRNA abundance in the adrenal cortex and pituitary, with structural analysis revealing two additional potential protein kinase C phosphorylation sites.

Cite This Study

Sandberg et al. (1992) studied this question.

synapsesocial.com/papers/6a6f779a75498292b708dc10 https://doi.org/10.1016/s0021-9258(19)50109-0

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