Angiotensin III [Val4] Peptide | AGT peptide
Angiotensin III [Val4]
~95%. Purified by HPLC.
~95%. Purified by HPLC.
.
NCBI and Uniprot Product Information
NCBI Description
The protein encoded by this gene, pre-angiotensinogen or angiotensinogen precursor, is expressed in the liver and is cleaved by the enzyme renin in response to lowered blood pressure. The resulting product, angiotensin I, is then cleaved by angiotensin converting enzyme (ACE) to generate the physiologically active enzyme angiotensin II. The protein is involved in maintaining blood pressure and in the pathogenesis of essential hypertension and preeclampsia. Mutations in this gene are associated with susceptibility to essential hypertension, and can cause renal tubular dysgenesis, a severe disorder of renal tubular development. Defects in this gene have also been associated with non-familial structural atrial fibrillation, and inflammatory bowel disease. [provided by RefSeq, Jul 2008]
Uniprot Description
Function: Essential component of the renin-angiotensin system (RAS), a potent regulator of blood pressure, body fluid and electrolyte homeostasis. Ref.11 Ref.12 Ref.17Angiotensin-2: acts directly on vascular smooth muscle as a potent vasoconstrictor, affects cardiac contractility and heart rate through its action on the sympathetic nervous system, and alters renal sodium and water absorption through its ability to stimulate the zona glomerulosa cells of the adrenal cortex to synthesize and secrete aldosterone. Ref.11 Ref.12 Ref.17Angiotensin-3: stimulates aldosterone release. Ref.11 Ref.12 Ref.17Angiotensin 1-7: is a ligand for the G-protein coupled receptor MAS1
By similarity. Has vasodilator and antidiuretic effects
By similarity. Has an antithrombotic effect that involves MAS1-mediated release of nitric oxide from platelets
By similarity. Ref.11 Ref.12 Ref.17
Subunit structure: During pregnancy, exists as a disulfide-linked 2:2 heterotetramer with the proform of PRG2 and as a complex (probably a 2:2:2 heterohexamer) with pro-PRG2 and C3dg. Ref.8 Ref.23
Subcellular location: Secreted.
Tissue specificity: Expressed by the liver and secreted in plasma.
Post-translational modification: Beta-decarboxylation of Asp-34 in angiotensin-2, by mononuclear leukocytes produces alanine. The resulting peptide form, angiotensin-A, has the same affinity for the AT1 receptor as angiotensin-2, but a higher affinity for the AT2 receptor.In response to low blood pressure, the enzyme renin/REN cleaves angiotensinogen to produce angiotensin-1. Angiotensin-1 is a substrate of ACE (angiotensin converting enzyme) that removes a dipeptide to yield the physiologically active peptide angiotensin-2. Angiotensin-1 and angiotensin-2 can be further processed to generate angiotensin-3, angiotensin-4. Angiotensin 1-9 is cleaved from angiotensin-1 by ACE2 and can be further processed by ACE to produce angiotensin 1-7, angiotensin 1-5 and angiotensin 1-4. Angiotensin 1-7 has also been proposed to be cleaved from angiotensin-2 by ACE2 or from angiotensin-1 by MME (neprilysin). Ref.13 Ref.14The disulfide bond is labile. Angiotensinogen is present in the circulation in a near 40:60 ratio with the oxidized disulfide-bonded form, which preferentially interacts with receptor-bound renin.
Involvement in disease: Essential hypertension (EHT) [MIM:145500]: A condition in which blood pressure is consistently higher than normal with no identifiable cause.Note: Disease susceptibility is associated with variations affecting the gene represented in this entry.Renal tubular dysgenesis (RTD) [MIM:267430]: Autosomal recessive severe disorder of renal tubular development characterized by persistent fetal anuria and perinatal death, probably due to pulmonary hypoplasia from early-onset oligohydramnios (the Potter phenotype).Note: The disease is caused by mutations affecting the gene represented in this entry. Ref.29
Sequence similarities: Belongs to the serpin family.
Caution: It is uncertain whether Met-1 or Met-10 is the initiator.
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Product Notes
The AGT agt (Catalog #AAA659011) is a Peptide produced from Synthetic peptide and is intended for research purposes only. The product is available for immediate purchase. It is sometimes possible for the material contained within the vial of "Angiotensin III [Val4], Peptide" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
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