Ser291

Site Information
SQPGKLRsPFLQKQL SwissProt Entrez-Gene
Blast this site against: NCBI SwissProt PDB
Site Group ID: 451880
Associated spectra: 1 CST

In vivo Characterization
Methods used to characterize site in vivo:	mass spectrometry ( 1 , 2 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 )
Disease tissue studied:	brain cancer ( 8 , 9 , 10 , 11 ) , neuroblastoma ( 14 ) , neuroendocrine cancer ( 8 , 9 , 10 , 11 )
Relevant cell line - cell type - tissue:	'3T3-L1, differentiated' (adipocyte) ( 1 , 6 ) , 'brain, embryonic' ( 21 , 22 ) , 32Dcl3 (myeloid) [FLT3 (mouse), transfection, chimera with human FLT3-ITD mutant (corresponding to wild type P36888 ( 18 ) , 32Dcl3 (myeloid) ( 18 ) , 3T3 (fibroblast) [CDC42 (human), transfection] ( 4 ) , 3T3 (fibroblast) [KRas (human), transfection] ( 4 ) , 3T3 (fibroblast) ( 4 , 19 ) , brain ( 8 , 9 , 10 , 11 , 20 , 23 ) , heart ( 15 ) , kidney ( 15 ) , liver ( 5 , 24 ) , lung ( 15 ) , macrophage-bone marrow ( 16 ) , macrophage-bone marrow [DUSP1 (mouse), homozygous knockout] ( 16 ) , macrophage-peritoneum ( 7 ) , MEF (fibroblast) [p53 (mouse), homozygous knockout] ( 12 ) , MEF (fibroblast) ( 13 ) , mpkCCD (renal) ( 17 ) , N1E-115 (neuron) ( 14 ) , RAW 264.7 (macrophage) ( 2 ) , spleen ( 15 ) , testis ( 15 )

Upstream Regulation
Treatments:	insulin ( 6 ) , LPA ( 14 ) , LPS ( 16 ) , NAG-thiazoline ( 19 ) , okadaic_acid ( 19 ) , PUGNAc ( 19 )

References
1	Minard AY, et al. (2016) mTORC1 Is a Major Regulatory Node in the FGF21 Signaling Network in Adipocytes. Cell Rep 17, 29-36 27681418 Curated Info
2	Pinto SM, et al. (2015) Quantitative phosphoproteomic analysis of IL-33-mediated signaling. Proteomics 15, 532-44 25367039 Curated Info
3	Mertins P, et al. (2014) Ischemia in tumors induces early and sustained phosphorylation changes in stress kinase pathways but does not affect global protein levels. Mol Cell Proteomics 13, 1690-704 24719451 Curated Info
4	Gnad F, et al. (2013) Systems-wide Analysis of K-Ras, Cdc42, and PAK4 Signaling by Quantitative Phosphoproteomics. Mol Cell Proteomics 12, 2070-80 23608596 Curated Info
5	Wilson-Grady JT, Haas W, Gygi SP (2013) Quantitative comparison of the fasted and re-fed mouse liver phosphoproteomes using lower pH reductive dimethylation. Methods 61, 277-86 23567750 Curated Info
6	Humphrey SJ, et al. (2013) Dynamic Adipocyte Phosphoproteome Reveals that Akt Directly Regulates mTORC2. Cell Metab 17, 1009-20 23684622 Curated Info
7	Wu X, et al. (2012) Investigation of receptor interacting protein (RIP3)-dependent protein phosphorylation by quantitative phosphoproteomics. Mol Cell Proteomics 11, 1640-51 22942356 Curated Info
8	Guo A (2011) CST Curation Set: 12732; Year: 2011; Biosample/Treatment: tissue, brain/untreated; Disease: brain cancer; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]P Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) CDKs Substrate Antibody Cat#: 2324, PTMScan(R) Phospho-CDK Substrate Motif (K/RS*PXK/R) Immunoaffinity Beads Cat#: 1981 Curated Info
9	Guo A (2011) CST Curation Set: 12733; Year: 2011; Biosample/Treatment: tissue, brain/untreated; Disease: brain cancer; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]P Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) CDKs Substrate Antibody Cat#: 2324, PTMScan(R) Phospho-CDK Substrate Motif (K/RS*PXK/R) Immunoaffinity Beads Cat#: 1981 Curated Info
10	Guo A (2011) CST Curation Set: 12734; Year: 2011; Biosample/Treatment: tissue, brain/untreated; Disease: brain cancer; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]P Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) CDKs Substrate Antibody Cat#: 2324, PTMScan(R) Phospho-CDK Substrate Motif (K/RS*PXK/R) Immunoaffinity Beads Cat#: 1981 Curated Info
11	Guo A (2011) CST Curation Set: 12735; Year: 2011; Biosample/Treatment: tissue, brain/untreated; Disease: brain cancer; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]P Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) CDKs Substrate Antibody Cat#: 2324, PTMScan(R) Phospho-CDK Substrate Motif (K/RS*PXK/R) Immunoaffinity Beads Cat#: 1981 Curated Info
12	Hsu PP, et al. (2011) The mTOR-regulated phosphoproteome reveals a mechanism of mTORC1-mediated inhibition of growth factor signaling. Science 332, 1317-22 21659604 Curated Info
13	Yu Y, et al. (2011) Phosphoproteomic analysis identifies Grb10 as an mTORC1 substrate that negatively regulates insulin signaling. Science 332, 1322-6 21659605 Curated Info
14	Wang Y, et al. (2011) Spatial phosphoprotein profiling reveals a compartmentalized extracellular signal-regulated kinase switch governing neurite growth and retraction. J Biol Chem 286, 18190-201 21454597 Curated Info
15	Huttlin EL, et al. (2010) A tissue-specific atlas of mouse protein phosphorylation and expression. Cell 143, 1174-89 21183079 Curated Info
16	Weintz G, et al. (2010) The phosphoproteome of toll-like receptor-activated macrophages. Mol Syst Biol 6, 371 20531401 Curated Info
17	Rinschen MM, et al. (2010) Quantitative phosphoproteomic analysis reveals vasopressin V2-receptor-dependent signaling pathways in renal collecting duct cells. Proc Natl Acad Sci U S A 107, 3882-7 20139300 Curated Info
18	Choudhary C, et al. (2009) Mislocalized activation of oncogenic RTKs switches downstream signaling outcomes. Mol Cell 36, 326-39 19854140 Curated Info
19	Wang Z, Gucek M, Hart GW (2008) Cross-talk between GlcNAcylation and phosphorylation: site-specific phosphorylation dynamics in response to globally elevated O-GlcNAc. Proc Natl Acad Sci U S A 105, 13793-8 18779572 Curated Info
20	Guo A (2008) CST Curation Set: 5004; Year: 2008; Biosample/Treatment: tissue, brain/untreated; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]P Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) CDKs Substrate Antibody Cat#: 2324, PTMScan(R) Phospho-CDK Substrate Motif (K/RS*PXK/R) Immunoaffinity Beads Cat#: 1981 Curated Info
21	Possemato A (2008) CST Curation Set: 3828; Year: 2008; Biosample/Treatment: tissue, brain, embryonic/untreated; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Antibodies Used to Purify Peptides prior to LCMS: Phospho-Akt Substrate (RXRXXS/T) (110B7) Rabbit mAb Cat#: 9614, PTMScan(R) Phospho-Akt Substrate Motif (RXXS/T) Immunoaffinity Beads Cat#: 1978 Curated Info
22	Possemato A (2007) CST Curation Set: 3396; Year: 2007; Biosample/Treatment: tissue, brain, embryonic/untreated; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]P Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) CDKs Substrate Antibody Cat#: 2324, PTMScan(R) Phospho-CDK Substrate Motif (K/RS*PXK/R) Immunoaffinity Beads Cat#: 1981 Curated Info
23	Possemato A (2007) CST Curation Set: 3397; Year: 2007; Biosample/Treatment: tissue, brain/untreated; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]P Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) CDKs Substrate Antibody Cat#: 2324, PTMScan(R) Phospho-CDK Substrate Motif (K/RS*PXK/R) Immunoaffinity Beads Cat#: 1981 Curated Info
24	Possemato A (2007) CST Curation Set: 3399; Year: 2007; Biosample/Treatment: tissue, liver/untreated; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]P Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) CDKs Substrate Antibody Cat#: 2324, PTMScan(R) Phospho-CDK Substrate Motif (K/RS*PXK/R) Immunoaffinity Beads Cat#: 1981 Curated Info