Entry
Name
Insulin signaling pathway - Xenopus laevis (African clawed frog)
Description
Insulin binding to its receptor results in the tyrosine phosphorylation of insulin receptor substrates (IRS) by the insulin receptor tyrosine kinase (INSR). This allows association of IRSs with the regulatory subunit of phosphoinositide 3-kinase (PI3K). PI3K activates 3-phosphoinositide-dependent protein kinase 1 (PDK1), which activates Akt, a serine kinase. Akt in turn deactivates glycogen synthase kinase 3 (GSK-3), leading to activation of glycogen synthase (GYS) and thus glycogen synthesis. Activation of Akt also results in the translocation of GLUT4 vesicles from their intracellular pool to the plasma membrane, where they allow uptake of glucose into the cell. Akt also leads to mTOR-mediated activation of protein synthesis by eIF4 and p70S6K. The translocation of GLUT4 protein is also elicited through the CAP/Cbl/TC10 pathway, once Cbl is phosphorylated by INSR.
Other signal transduction proteins interact with IRS including GRB2. GRB2 is part of the cascade including SOS, RAS, RAF and MEK that leads to activation of mitogen-activated protein kinase (MAPK) and mitogenic responses in the form of gene transcription. SHC is another substrate of INSR. When tyrosine phosphorylated, SHC associates with GRB2 and can thus activate the RAS/MAPK pathway independently of IRS-1.
Class
Organismal Systems; Endocrine system
BRITE hierarchy
Pathway map
Organism
Xenopus laevis (African clawed frog) [GN:
xla ]
Gene
100127310 prkag3.S; protein kinase, AMP-activated, gamma 3 non-catalytic subunit S homeolog [KO:K07200 ]
100190767 elk1.S; ELK1, member of ETS oncogene family S homeolog [KO:K04375 ]
100294520 socs1.L; suppressor of cytokine signaling 1 L homeolog [KO:K04694 ]
100462892 ppargc1a.S; peroxisome proliferator-activated receptor gamma coactivator 1-alpha isoform X1 [KO:K07202 ]
108696213 sorbs1.L; sorbin and SH3 domain-containing protein 1 isoform X1 [KO:K06086 ]
108698053 ppargc1a.L; peroxisome proliferator-activated receptor gamma coactivator 1-alpha isoform X1 [KO:K07202 ]
108698108 elk1.L; ETS domain-containing protein Elk-1 isoform X2 [KO:K04375 ]
108698866 rapgef1.L; rap guanine nucleotide exchange factor 1 isoform X1 [KO:K06277 ]
108700936 ppp1r3d.L; protein phosphatase 1 regulatory subunit 3D [KO:K07189 ]
108701572 prkar1b.L; cAMP-dependent protein kinase type I-beta regulatory subunit isoform X1 [KO:K04739 ]
108702632 ppp1r3d.S; protein phosphatase 1 regulatory subunit 3D [KO:K07189 ]
108703142 prkar1b.S; cAMP-dependent protein kinase type I-beta regulatory subunit isoform X1 [KO:K04739 ]
108703239 srebf1.S; sterol regulatory element-binding protein 1 isoform X1 [KO:K07197 ]
108706884 pik3r2.S; phosphatidylinositol 3-kinase regulatory subunit beta isoform X1 [KO:K02649 ]
108708334 phkg1.L; phosphorylase b kinase gamma catalytic chain, skeletal muscle/heart isoform [KO:K00871 ] [EC:2.7.11.19 ]
108709817 prkag1.S; 5'-AMP-activated protein kinase subunit gamma-1 isoform X1 [KO:K07200 ]
108711062 socs2.L; suppressor of cytokine signaling 2 isoform X2 [KO:K04695 ]
108711133 ppp1r3a.L; protein phosphatase 1 regulatory subunit 3A [KO:K07189 ]
108711183 prkar2b.L; cAMP-dependent protein kinase type II-beta regulatory subunit isoform X1 [KO:K04739 ]
108713027 pik3r2.L; phosphatidylinositol 3-kinase regulatory subunit beta isoform X1 [KO:K02649 ]
108713113 ppp1r3a.S; protein phosphatase 1 regulatory subunit 3A [KO:K07189 ]
108714128 phkb.L; LOW QUALITY PROTEIN: phosphorylase b kinase regulatory subunit beta-like [KO:K07190 ]
108714672 prkar2a.L; cAMP-dependent protein kinase type II-alpha regulatory subunit [KO:K04739 ]
108714865 ppp1r3e.L; protein phosphatase 1 regulatory subunit 3E [KO:K07189 ]
108715481 phkb.S; phosphorylase b kinase regulatory subunit beta isoform X3 [KO:K07190 ]
108715739 prkab2.S; 5'-AMP-activated protein kinase subunit beta-2 [KO:K07199 ]
108715882 prkar2a.S; cAMP-dependent protein kinase type II-alpha regulatory subunit [KO:K04739 ]
108715919 prkab1.L; 5'-AMP-activated protein kinase subunit beta-1 isoform X1 [KO:K07199 ]
108717120 pik3cb.L; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit beta isoform [KO:K00922 ] [EC:2.7.1.153 ]
108718046 MGC89871.S; eukaryotic translation initiation factor 4E type 2 [KO:K03259 ]
108718090 pik3ca.S; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform [KO:K00922 ] [EC:2.7.1.153 ]
108718190 pik3cb.S; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit beta isoform isoform X1 [KO:K00922 ] [EC:2.7.1.153 ]
108718729 prkag2.L; protein kinase, AMP-activated, gamma 2 non-catalytic subunit L homeolog [KO:K07200 ]
373752 pik3ca.L; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform [KO:K00922 ] [EC:2.7.1.153 ]
379290 g6pc1.2.S; glucose-6-phosphatase, catalytic subunit 1, gene 2 S homeolog [KO:K01084 ] [EC:3.1.3.9 ]
379852 g6pc1.1.L; glucose-6-phosphatase, catalytic subunit 1, gene 1 L homeolog [KO:K01084 ] [EC:3.1.3.9 ]
379914 ppp1ca.L; protein phosphatase 1, catalytic subunit, alpha isozyme L homeolog [KO:K06269 ] [EC:3.1.3.16 ]
379991 map2k1.L; dual specificity mitogen-activated protein kinase kinase 1 [KO:K04368 ] [EC:2.7.12.2 ]
380124 prkag3.L; protein kinase, AMP-activated, gamma 3 non-catatlytic subunit [KO:K07200 ]
380186 rheb.L; Ras homolog, mTORC1 binding L homeolog [KO:K07208 ]
380372 prkab2.L; protein kinase, AMP-activated, beta 2 non-catalytic subunit L homeolog [KO:K07199 ]
380388 prkacb.S; protein kinase cAMP-activated catalytic subunit beta S homeolog [KO:K04345 ] [EC:2.7.11.11 ]
380467 socs3.S; suppressor of cytokine signaling 3 S homeolog [KO:K04696 ]
380598 ppp1cc.S; serine/threonine-protein phosphatase PP1-gamma catalytic subunit B [KO:K06269 ] [EC:3.1.3.16 ]
397767 ppp1cc.L; serine/threonine-protein phosphatase PP1-gamma catalytic subunit A [KO:K06269 ] [EC:3.1.3.16 ]
397771 kras.L; kirsten rat sarcoma viral oncogene homolog L homeolog [KO:K07827 ]
398160 ptprf.L; protein tyrosine phosphatase receptor type F L homeolog precursor [KO:K05695 ] [EC:3.1.3.48 ]
398855 g6pc1.2.L; glucose-6-phosphatase, catalytic subunit 1, gene 2 L homeolog [KO:K01084 ] [EC:3.1.3.9 ]
398958 prkag2.S; protein kinase, AMP-activated, gamma 2 non-catalytic subunit S homeolog [KO:K07200 ]
399172 prkaa2.S; protein kinase, AMP-activated, alpha 2 catalytic subunit S homeolog [KO:K07198 ] [EC:2.7.11.31 ]
399202 pik3r1.S; phosphatidylinositol 3-kinase regulatory subunit alpha [KO:K02649 ]
399255 eif4e1b.S; eukaryotic translation initiation factor 4E [KO:K03259 ]
399406 hras.L; Harvey rat sarcoma viral oncogene homolog L homeolog [KO:K02833 ]
399424 pck2.L; phosphoenolpyruvate carboxykinase 2 (mitochondrial) L homeolog [KO:K01596 ] [EC:4.1.1.32 ]
399458 grb2.L; growth factor receptor-bound protein 2-A [KO:K04364 ]
414533 socs3.L; suppressor of cytokine signaling 3 L homeolog [KO:K04696 ]
414569 crkl.S; uncharacterized protein LOC414569 [KO:K04438 ]
414594 prkar2b.S; protein kinase, cAMP-dependent, regulatory subunit type II beta S homeolog [KO:K04739 ]
414616 ppp1r3c.2.L; uncharacterized protein LOC414616 [KO:K07189 ]
432155 prkar1a.L; cAMP-dependent protein kinase, regulatory subunit alpha 1 [KO:K04739 ]
432200 ikbkb.L; inhibitor of kappa light polypeptide gene enhancer in B-cells, kinase beta L homeolog [KO:K07209 ] [EC:2.7.11.10 ]
443852 ppp1cb.L; serine/threonine-protein phosphatase PP1-beta catalytic subunit [KO:K06269 ] [EC:3.1.3.16 ]
443921 socs1.S; suppressor of cytokine signaling 1 S homeolog [KO:K04694 ]
443944 ppp1r3b.S; protein phosphatase 1 regulatory subunit 3B-B [KO:K07189 ]
443964 pik3r1.L; phosphoinositide-3-kinase regulatory subunit 1 L homeolog [KO:K02649 ]
443998 prkab1.S; protein kinase, AMP-activated, beta 1 non-catalytic subunit S homeolog [KO:K07199 ]
444033 slc2a4.L; solute carrier family 2 (facilitated glucose transporter), member 4 L homeolog [KO:K07191 ]
444095 grb2.S; growth factor receptor-bound protein 2-B [KO:K04364 ]
444199 rapgef1.S; Rap guanine nucleotide exchange factor 1 S homeolog [KO:K06277 ]
444329 ppp1r3c.1.L; protein phosphatase 1, regulatory (inhibitor) subunit 3C, gene 1 L homeolog [KO:K07189 ]
444397 prkag1.L; protein kinase, AMP-activated, gamma 1 non-catalytic subunit L homeolog [KO:K07200 ]
444514 ptpn1.L; protein tyrosine phosphatase non-receptor type 1 L homeolog [KO:K05696 ] [EC:3.1.3.48 ]
444805 prkar1a.S; protein kinase cAMP-dependent type I regulatory subunit alpha S homeolog [KO:K04739 ]
446643 ppp1r3c.1.S; protein phosphatase 1 regulatory subunit 3C [KO:K07189 ]
446786 pik3r3.S; phosphoinositide-3-kinase regulatory subunit 3 S homeolog [KO:K02649 ]
447419 crkl.L; v-crk avian sarcoma virus CT10 oncogene homolog-like L homeolog [KO:K04438 ]
447506 g6pc1.1.S; glucose-6-phosphatase, catalytic subunit 1, gene 1 S homeolog [KO:K01084 ] [EC:3.1.3.9 ]
447594 pik3r3.L; phosphoinositide-3-kinase regulatory subunit 3 L homeolog [KO:K02649 ]
495290 prkaa1.L; protein kinase, AMP-activated, alpha 1 catalytic subunit L homeolog [KO:K07198 ] [EC:2.7.11.31 ]
734259 eif4e.L; eukaryotic translation initiation factor 4E L homeolog [KO:K03259 ]
734276 socs2.S; suppressor of cytokine signaling 2 S homeolog [KO:K04695 ]
734374 ppp1r3c.2.S; protein phosphatase 1 regulatory subunit 3C gene 2 S homeolog [KO:K07189 ]
734605 eif4e2.L; eukaryotic translation initiation factor 4E family member 2 L homeolog [KO:K03259 ]
734669 MGC89871.L; uncharacterized protein LOC734669 [KO:K03259 ]
735066 ppp1r3b.L; protein phosphatase 1 regulatory subunit 3B-A [KO:K07189 ]
Compound
C05981 Phosphatidylinositol-3,4,5-trisphosphate
Reference
Authors
Ogawa W, Kasuga M.
Title
[Mechanism of insulin action and diabetes mellitus]
Journal
Seikagaku 75:1332-44 (2003)
Reference
Authors
Bevan P.
Title
Insulin signalling.
Journal
J Cell Sci 114:1429-30 (2001)
Reference
Authors
Kanzaki M, Pessin JE.
Title
Insulin signaling: GLUT4 vesicles exit via the exocyst.
Journal
Reference
Authors
Moodie SA, Alleman-Sposeto J, Gustafson TA.
Title
Identification of the APS protein as a novel insulin receptor substrate.
Journal
Reference
Authors
Gual P, Le Marchand-Brustel Y, Tanti JF.
Title
Positive and negative regulation of insulin signaling through IRS-1 phosphorylation.
Journal
Reference
Authors
Le Good JA, Ziegler WH, Parekh DB, Alessi DR, Cohen P, Parker PJ.
Title
Protein kinase C isotypes controlled by phosphoinositide 3-kinase through the protein kinase PDK1.
Journal
Reference
Authors
Saltiel AR, Kahn CR.
Title
Insulin signalling and the regulation of glucose and lipid metabolism.
Journal
Reference
Authors
Inoki K, Corradetti MN, Guan KL.
Title
Dysregulation of the TSC-mTOR pathway in human disease.
Journal
Reference
Authors
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Title
The Akt of translational control.
Journal
Reference
Authors
Nave BT, Ouwens M, Withers DJ, Alessi DR, Shepherd PR.
Title
Mammalian target of rapamycin is a direct target for protein kinase B: identification of a convergence point for opposing effects of insulin and amino-acid deficiency on protein translation.
Journal
Reference
Authors
Pullen N, Dennis PB, Andjelkovic M, Dufner A, Kozma SC, Hemmings BA, Thomas G.
Title
Phosphorylation and activation of p70s6k by PDK1.
Journal
Reference
Authors
Ogawa W, Matozaki T, Kasuga M.
Title
Role of binding proteins to IRS-1 in insulin signalling.
Journal
Mol Cell Biochem 182:13-22 (1998)
Reference
Authors
Ceresa BP, Pessin JE.
Title
Insulin regulation of the Ras activation/inactivation cycle.
Journal
Mol Cell Biochem 182:23-9 (1998)
Reference
Authors
Pollak MN, Schernhammer ES, Hankinson SE.
Title
Insulin-like growth factors and neoplasia.
Journal
Reference
Authors
Datta SR, Dudek H, Tao X, Masters S, Fu H, Gotoh Y, Greenberg ME.
Title
Akt phosphorylation of BAD couples survival signals to the cell-intrinsic death machinery.
Journal
Reference
Authors
Ferre P, Foufelle F
Title
SREBP-1c transcription factor and lipid homeostasis: clinical perspective.
Journal
Reference
Authors
Raghow R, Yellaturu C, Deng X, Park EA, Elam MB
Title
SREBPs: the crossroads of physiological and pathological lipid homeostasis.
Journal
Reference
Authors
Clement S, Krause U, Desmedt F, Tanti JF, Behrends J, Pesesse X, Sasaki T, Penninger J, Doherty M, Malaisse W, Dumont JE, Le Marchand-Brustel Y, Erneux C, Hue L, Schurmans S
Title
The lipid phosphatase SHIP2 controls insulin sensitivity.
Journal
Reference
Authors
Backers K, Blero D, Paternotte N, Zhang J, Erneux C
Title
The termination of PI3K signalling by SHIP1 and SHIP2 inositol 5-phosphatases.
Journal
Related pathway
xla04070 Phosphatidylinositol signaling system
KO pathway