Pentagastrin

(3S)-3-{[(2S)-1-hydroxy-2-{[(2S)-1-hydroxy-2-[(1-hydroxy-3-{[hydroxy(2-methylpropoxy)methylidene]amino}propylidene)amino]-3-(1H-indol-3-yl)propylidene]amino}-4-(methylsulphanyl)butylidene]amino}-3-{[(1S)-1-(C-hydroxycarbonimidoyl)-2-phenylethyl]-C-hydroxycarbonimidoyl}propanoic acid

Formula: C37H49N7O9S (767.3312)
Chinese Name: 五肽胃泌素
BioDeep ID: BioDeep_00000033202 ( View LC/MS Profile)
SMILES: CSCC[C@H](NC(=O)[C@H](CC1=CNC2=CC=CC=C12)NC(=O)CCNC(=O)OCC(C)C)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC1=CC=CC=C1)C(N)=O



Found 5 Sample Hits

m/z Adducts Species Organ Scanning Sample
750.3366 [M+H-H2O]+
PPM:11.5		 Mus musculus Left upper arm MALDI (CHCA)
357_l_total ion count - Limb defect imaging - Monash University
Resolution: 50μm, 97x131

Description

Diseased
750.3203 [M+H-H2O]+
PPM:10.2		 Macropus giganteus Brain MALDI (BPYN)
170321_kangaroobrain-dan3-pos_maxof50.0_med1 - 170321_kangaroobrain-dan3-pos_maxof50.0_med1
Resolution: 50μm, 81x50

Description

Sample information Organism: Macropus giganteus (kangaroo) Organism part: Brain Condition: Wildtype Sample growth conditions: Wild
768.3469 [M+H]+
PPM:10.9		 Macropus giganteus Brain MALDI (BPYN)
170321_kangaroobrain-dan3-pos_maxof50.0_med1 - 170321_kangaroobrain-dan3-pos_maxof50.0_med1
Resolution: 50μm, 81x50

Description

Sample information Organism: Macropus giganteus (kangaroo) Organism part: Brain Condition: Wildtype Sample growth conditions: Wild
790.3356 [M+Na]+
PPM:19.2		 Macropus giganteus Brain MALDI (BPYN)
170321_kangaroobrain-dan3-pos_maxof50.0_med1 - 170321_kangaroobrain-dan3-pos_maxof50.0_med1
Resolution: 50μm, 81x50

Description

Sample information Organism: Macropus giganteus (kangaroo) Organism part: Brain Condition: Wildtype Sample growth conditions: Wild
768.3301 [M+H]+
PPM:10.9		 Mytilus edulis gill MALDI (DHB)
20190202_MS38_Crassostrea_Gill_350-1500_DHB_pos_A25_11um_305x210 - MTBLS2960
Resolution: 11μm, 305x210

Description

single cell layer class_4 is the gill structure cells, metabolite ion 534.2956 is the top representive ion of this type of cell

Pentagastrin is only found in individuals that have used or taken this drug. It is a synthetic pentapeptide that has effects like gastrin when given parenterally. It stimulates the secretion of gastric acid, pepsin, and intrinsic factor, and has been used as a diagnostic aid. [PubChem]The exact mechanism by which pentagastrin stimulates gastric acid, pepsin, and intrinsic factor secretion is unknown; however, since pentagastrin is an analogue of natural gastrin, it is believed that it excites the oxyntic cells of the stomach to secrete to their maximum capacity. Pentagastrin stimulates pancreatic secretion, especially when administered in large intramuscular doses. Pentagastrin also increases gastrointestinal motility by a direct effect on the intestinal smooth muscle. However, it delays gastric emptying time probably by stimulation of terminal antral contractions, which enhance retropulsion. Pentagastrin (ICI-50123) is a potent, selective Cholecystokinin B (CCKB) receptor antagonists with IC50 values of 11 nM and 1100 nM for CCKB and CCKA, respectively. Pentagastrin enhances gastric mucosal defense mechanisms against acid and protects the gastric mucosa from experimental injury[1].[2].