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Home > Curated Information Page > PubMed Id: 19797085
Li X, Liu J, Gao T (2009) beta-TrCP-mediated ubiquitination and degradation of PHLPP1 are negatively regulated by Akt. Mol Cell Biol 29, 6192-205 19797085
This page summarizes selected information from the record referenced above and curated into PhosphoSitePlus®, a comprehensive online resource for the study of protein post-translational modifications (NAR, 2015, 43:D512-20). To learn more about the scope of PhosphoSitePlus®, click here.
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S473-p - Akt1 (human)
Modsite: RPHFPQFsysAsGtA SwissProt Entrez-Gene
Orthologous residues
Akt1 (human): S473‑p, Akt1 iso2 (human): S411‑p, Akt1 (mouse): S473‑p, Akt1 (rat): S473‑p, Akt1 (fruit fly): S586‑p, Akt1 (cow): S473‑p
Characterization
Methods used to characterize site in vivo phospho-antibody, western blotting
Relevant cell lines - cell types - tissues:  HEK293T (epithelial)
Cellular systems studied:  cell lines
Species studied:  human
Downstream Regulation
Effect of modification (function):  protein degradation
Comments:  PHLPP phosphorylation induces degradation and Akt1 activation negatively regulates degradation.

S21-p - GSK3A (human)
Modsite: sGrARtssFAEPGGG SwissProt Entrez-Gene
Orthologous residues
GSK3A (human): S21‑p, GSK3A (mouse): S21‑p, GSK3A (rat): S21‑p, GSK3A (cow): S21‑p
Characterization
Methods used to characterize site in vivo phospho-antibody, western blotting
Relevant cell lines - cell types - tissues:  HEK293T (epithelial)
Cellular systems studied:  cell lines
Species studied:  human

S9-p - GSK3B (human)
Modsite: SGRPRttsFAEsCkP SwissProt Entrez-Gene
Orthologous residues
GSK3B (human): S9‑p, GSK3B iso2 (human): S9‑p, GSK3B (mouse): S9‑p, GSK3B (rat): S9‑p, GSK3B (rabbit): S9‑p
Characterization
Methods used to characterize site in vivo phospho-antibody, western blotting
Relevant cell lines - cell types - tissues:  HEK293T (epithelial)
Cellular systems studied:  cell lines
Species studied:  human

S1359-p - PHLPP (human)
Modsite: VPRPHVQsVLLtPQD SwissProt Entrez-Gene
Orthologous residues
PHLPP (human): S1359‑p, PHLPP (mouse): S1315‑p, PHLPP (rat): S1322‑p
Characterization
Methods used to characterize site in vivo immunoprecipitation, mass spectrometry (in vitro), mutation of modification site, phospho-antibody, western blotting
Disease tissue studied:  colorectal cancer, colorectal carcinoma
Relevant cell lines - cell types - tissues:  HCT116 (intestinal), HEK293T (epithelial)
Cellular systems studied:  cell lines
Species studied:  human
Enzymes shown to modify site in vitro
Type Enzyme
KINASE CK1A (human)
KINASE GSK3B (human)
Comments:  S1379 or S1381 is likely a CK1-A site and S1359 is most likely a GSK3B site, while T1363 the CK1-A priming site.
Upstream Regulation
Potential in vivo enzymes for site: 
Type Enzyme Evidence Notes
KINASE GSK3B (human) pharmacological inhibitor of upstream enzyme, phospho-antibody, transfection of wild-type enzyme, mutation in upstream enzyme recognition motif
Downstream Regulation
Effect of modification (function):  protein degradation
Comments:  PHLPP phosphorylation induces degradation and Akt1 activation negatively regulates degradation.

T1363-p - PHLPP (human)
Modsite: HVQsVLLtPQDEFFI SwissProt Entrez-Gene
Orthologous residues
PHLPP (human): T1363‑p, PHLPP (mouse): T1319‑p, PHLPP (rat): T1326‑p
Characterization
Methods used to characterize site in vivo immunoprecipitation, mass spectrometry (in vitro), mutation of modification site, phospho-antibody, western blotting
Disease tissue studied:  colorectal cancer, colorectal carcinoma
Relevant cell lines - cell types - tissues:  HCT116 (intestinal), HEK293T (epithelial)
Cellular systems studied:  cell lines
Species studied:  human
Enzymes shown to modify site in vitro
Type Enzyme
KINASE GSK3B (human)
KINASE CK1A (human)
Comments:  S1379 or S1381 is likely a CK1-A site and S1359 is most likely a GSK3B site, while T1363 the CK1-A priming site.
Downstream Regulation
Effect of modification (function):  protein degradation
Comments:  PHLPP phosphorylation induces degradation and Akt1 activation negatively regulates degradation.

S1379-p - PHLPP (human)
Modsite: GSKGLWDsLsVEEAV SwissProt Entrez-Gene
Orthologous residues
PHLPP (human): S1379‑p, PHLPP (mouse): S1335‑p, PHLPP (rat): S1342‑p
Characterization
Methods used to characterize site in vivo immunoprecipitation, mass spectrometry (in vitro), mutation of modification site, phospho-antibody, western blotting
Disease tissue studied:  colorectal cancer, colorectal carcinoma
Relevant cell lines - cell types - tissues:  HCT116 (intestinal), HEK293T (epithelial)
Cellular systems studied:  cell lines
Species studied:  human
Enzymes shown to modify site in vitro
Type Enzyme
KINASE CK1A (human)
KINASE GSK3B (human)
Comments:  S1379 or S1381 is likely a CK1-A site and S1359 is most likely a GSK3B site, while T1363 the CK1-A priming site.

S1381-p - PHLPP (human)
Modsite: KGLWDsLsVEEAVEA SwissProt Entrez-Gene
Orthologous residues
PHLPP (human): S1381‑p, PHLPP (mouse): S1337‑p, PHLPP (rat): S1344‑p
Characterization
Methods used to characterize site in vivo immunoprecipitation, mass spectrometry (in vitro), mutation of modification site, phospho-antibody, western blotting
Disease tissue studied:  colorectal cancer, colorectal carcinoma
Relevant cell lines - cell types - tissues:  HCT116 (intestinal), HEK293T (epithelial)
Cellular systems studied:  cell lines
Species studied:  human
Enzymes shown to modify site in vitro
Type Enzyme
KINASE CK1A (human)
KINASE GSK3B (human)
Comments:  S1379 or S1381 is likely a CK1-A site and S1359 is most likely a GSK3B site, while T1363 the CK1-A priming site.