Big Gastrin-1, human - 0.5 mg
- Cat.Number : AS-20747
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Big Gastrin is also referred to as Gastrin-34. Secretion of gastrin is induced by food intake and causes the release of gastric acid in the stomach. Secreted by the G cells in the gastric mucosa, it is one of the major bioactive forms of gastrin found in tissue and plasma (the other bioactive form is gastrin-17 or little gastrin). Both gastrin-17 and gastrin-34 are carboxy-amidated and partially tyrosine sulfated. Binding of gastrin to the CCK2/gastrin receptor requires carboxy-amidation, however sulfation is not necessary for binding to the receptor. Binding of Gastrin to the CCK2/gastrin receptors on parietal cells of the stomach causes them to secrete hydrochloric acid (HCl) and stimulates lectin-like protein Reg expression via activation of PKC and RhoA. Gastrin also plays a role in release of Histamine and Pepsinogen.
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References
N-Terminal Sequence of Human Big Gastrin: Sequence, Synthetic and Immunochemical Studies
Hoppe-Seylers Z Physiol Chem . 1980 Nov 01 ; 361(11) 1719 | DOI : 10.1515/bchm2.1980.361.2.1719.
- A. Choudhury
- et al
Hypergastrinemia--diagnosis and Treatment
Wien Klin Wochenschr . 2007 Nov 01 ; 119(19) 561 | DOI : 10.1007/s00508-007-0897-x.
- B. Niederle
- et al
Digestive Function of the Stomach
Digestive Dis . 2014 Apr 10 ; 32(3) 186 | DOI : 10.1159/000357848.
- A. O’Connor
- et al
Gastrin: Old Hormone, New Functions
Pflügers Archiv . 2005 Jan 01 ; 449(4) 344 | DOI : 10.1007/s00424-004-1347-5
- G. Dockray
- et al
New Consensus Features for Tyrosine O-sulfation Determined by Mutational Analysis
JBC . 1997 Aug 29 ; 272(35) 21700 | DOI : 10.1074/jbc.272.35.21700.
- JR. Bundgaard
- et al
Ghrelin and Gastric Acid Secretion
World J Gastroenterol . 2008 Nov 07 ; 14(41) 6334 | DOI : 10.3748/wjg.14.6334.
- K. Yakabi
- et al
N-Terminal Sequence of Human Big Gastrin: Sequence, Synthetic and Immunochemical Studies
Hoppe-Seylers Z Physiol Chem . 1980 Jan 01 ; 361 1719 | DOI : https://doi.org/10.1515/bchm2.1980.361.2.1719
- A. Choudhury
- et al