Entry Name Pancreatic secretion - Pan paniscus (bonobo)
Description The pancreas performs both exocrine and endocrine functions. The exocrine pancreas consists of two parts, the acinar and duct cells. The primary functions of pancreatic acinar cells are to synthesize and secrete digestive enzymes. Stimulation of the cell by secretagogues such as acetylcholine (ACh) and cholecystokinin (CCK) causes the generation of an intracellular Ca2+ signal. This signal, in turn, triggers the fusion of the zymogen granules with the apical plasma membrane, leading to the polarised secretion of the enzymes. The major task of pancreatic duct cells is the secretion of fluid and bicarbonate ions (HCO3-), which neutralize the acidity of gastric contents that enter the duodenum. An increase in intracellular cAMP by secretin is one of the major signals of pancreatic HCO3- secretion. Activation of the CFTR Cl- channel and the CFTR-dependent Cl-/HCO3- exchange activities is responsible for cAMP-induced HCO3- secretion.
Class Organismal Systems; Digestive systemBRITE hierarchy
Pathway map Ortholog table Other DBs Organism Pan paniscus (bonobo) [GN:
pps ]
Gene 100986730 GNAQ; guanine nucleotide-binding protein G(q) subunit alpha isoform X1 [KO:K04634 ]
100969660 PLCB1; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1 isoform X2 [KO:K05858 ] [EC:3.1.4.11 ]
100987524 PLCB3; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-3 isoform X1 [KO:K05858 ] [EC:3.1.4.11 ]
100969344 PLCB2; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-2 isoform X4 [KO:K05858 ] [EC:3.1.4.11 ]
100978643 PLCB4; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-4 isoform X1 [KO:K05858 ] [EC:3.1.4.11 ]
100975743 CTRL; chymotrypsin-like protease CTRL-1 [KO:K09632 ] [EC:3.4.21.-]
100984884 ITPR1; inositol 1,4,5-trisphosphate receptor type 1 isoform X1 [KO:K04958 ]
100980378 ITPR2; inositol 1,4,5-trisphosphate receptor type 2 isoform X2 [KO:K04959 ]
100982024 ITPR3; inositol 1,4,5-trisphosphate receptor type 3 isoform X6 [KO:K04960 ]
103787182 ATP2A1; LOW QUALITY PROTEIN: sarcoplasmic/endoplasmic reticulum calcium ATPase 1 [KO:K05853 ] [EC:7.2.2.10 ]
100980788 CLCA1; calcium-activated chloride channel regulator 1 [KO:K05027 ]
100980451 CLCA2; calcium-activated chloride channel regulator 2 [KO:K05028 ]
100981113 CLCA4; calcium-activated chloride channel regulator 4 [KO:K05030 ]
100981456 LOW QUALITY PROTEIN: calcium-activated chloride channel regulator 1-like [KO:K05030 ]
100973473 TRPC1; short transient receptor potential channel 1 isoform X4 [KO:K04964 ]
100978438 SLC12A2; solute carrier family 12 member 2 isoform X1 [KO:K10951 ]
100981350 ATP1B1; sodium/potassium-transporting ATPase subunit beta-1 isoform X1 [KO:K01540 ]
100974727 ATP1B2; sodium/potassium-transporting ATPase subunit beta-2 [KO:K01540 ]
100977407 ATP1B3; sodium/potassium-transporting ATPase subunit beta-3 isoform X1 [KO:K01540 ]
103786316 sodium/potassium-transporting ATPase subunit gamma isoform X3 [KO:K01538 ]
100992874 KCNQ1; potassium voltage-gated channel subfamily KQT member 1 isoform X1 [KO:K04926 ]
100978771 KCNMA1; calcium-activated potassium channel subunit alpha-1 isoform X17 [KO:K04936 ]
100990650 guanine nucleotide-binding protein G(s) subunit alpha isoform X1 [KO:K04632 ]
100989755 SLC4A4; electrogenic sodium bicarbonate cotransporter 1 [KO:K13575 ]
Compound C01245 D-myo-Inositol 1,4,5-trisphosphate
C13051 Nicotinic acid adenine dinucleotide phosphate
Reference Authors Petersen OH, Tepikin AV
Title Polarized calcium signaling in exocrine gland cells.
Journal Reference Authors Williams JA
Title Regulation of acinar cell function in the pancreas.
Journal Reference Authors Williams JA
Title Regulation of pancreatic acinar cell function.
Journal Reference Authors Bi Y, Williams JA
Title Receptor biology and signal transduction in pancreatic acinar cells.
Journal Reference Authors Yamasaki M, Masgrau R, Morgan AJ, Churchill GC, Patel S, Ashcroft SJ, Galione A
Title Organelle selection determines agonist-specific Ca2+ signals in pancreatic acinar and beta cells.
Journal Reference Authors Kanno T
Title Ca2+ signaling in the pancreatic acinus.
Journal Pancreas 16:273-6 (1998)
Reference Authors Heitzmann D, Warth R
Title Physiology and pathophysiology of potassium channels in gastrointestinal epithelia.
Journal Reference Authors Konturek SJ, Zabielski R, Konturek JW, Czarnecki J
Title Neuroendocrinology of the pancreas; role of brain-gut axis in pancreatic secretion.
Journal Reference Authors Chu JY, Yung WH, Chow BK
Title Secretin: a pleiotrophic hormone.
Journal Reference Authors Siu FK, Lam IP, Chu JY, Chow BK
Title Signaling mechanisms of secretin receptor.
Journal Reference Authors Steward MC, Ishiguro H, Case RM
Title Mechanisms of bicarbonate secretion in the pancreatic duct.
Journal Reference Authors Kim D, Steward MC
Title The role of CFTR in bicarbonate secretion by pancreatic duct and airway epithelia.
Journal Reference Authors Whitcomb DC, Lowe ME
Title Human pancreatic digestive enzymes.
Journal Reference Authors Cancela JM, Gerasimenko OV, Gerasimenko JV, Tepikin AV, Petersen OH
Title Two different but converging messenger pathways to intracellular Ca(2+) release: the roles of nicotinic acid adenine dinucleotide phosphate, cyclic ADP-ribose and inositol trisphosphate.
Journal Reference Authors Cancela JM, Churchill GC, Galione A
Title Coordination of agonist-induced Ca2+-signalling patterns by NAADP in pancreatic acinar cells.
Journal Reference Authors Parekh AB
Title Calcium signaling and acute pancreatitis: specific response to a promiscuous messenger.
Journal Reference Authors Williams JA, Chen X, Sabbatini ME
Title Small G proteins as key regulators of pancreatic digestive enzyme secretion.
Journal Related pps04973 Carbohydrate digestion and absorption
pps04974 Protein digestion and absorption
pps04977 Vitamin digestion and absorption
KO pathway LinkDB All DBs
