Ser251

Site Information
RRLRRSHsGPAGsFN SwissProt Entrez-Gene
Blast this site against: NCBI SwissProt PDB
Site Group ID: 3215403

In vivo Characterization
Methods used to characterize site in vivo:	mass spectrometry ( 1 , 3 , 4 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 )
Disease tissue studied:	anthrax infection ( 13 )
Relevant cell line - cell type - tissue:	'3T3-L1, differentiated' (adipocyte) ( 3 , 8 ) , 3T3 (fibroblast) [CDC42 (human), transfection] ( 6 ) , 3T3 (fibroblast) [KRas (human), transfection] ( 6 ) , 3T3 (fibroblast) ( 6 ) , heart ( 14 ) , Hepa 1-6 (epithelial) ( 35 ) , kidney ( 14 ) , liver ( 1 , 7 , 10 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 36 ) , liver [leptin (mouse), homozygous knockout] ( 10 ) , lung ( 14 ) , macrophage-peritoneum ( 9 ) , MC3T3-E1 (preosteoblast) ( 4 ) , MEF (fibroblast) [p53 (mouse), homozygous knockout] ( 11 ) , MEF (fibroblast) ( 12 ) , spleen ( 13 , 14 )

Upstream Regulation
Regulatory protein:	CDC42 (mouse) ( 6 ) , KRas (mouse) ( 6 ) , PAK4 (mouse) ( 6 )

References
1	Robles MS, Humphrey SJ, Mann M (2017) Phosphorylation Is a Central Mechanism for Circadian Control of Metabolism and Physiology. Cell Metab 25, 118-127 27818261 Curated Info
2	Sacco F, et al. (2016) Glucose-regulated and drug-perturbed phosphoproteome reveals molecular mechanisms controlling insulin secretion. Nat Commun 7, 13250 27841257 Curated Info
3	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
4	Williams GR, et al. (2016) Exploring G protein-coupled receptor signaling networks using SILAC-based phosphoproteomics. Methods 92, 36-50 26160508 Curated Info
5	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
6	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
7	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
8	Humphrey SJ, et al. (2013) Dynamic Adipocyte Phosphoproteome Reveals that Akt Directly Regulates mTORC2. Cell Metab 17, 1009-20 23684622 Curated Info
9	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
10	Grimsrud PA, et al. (2012) A quantitative map of the liver mitochondrial phosphoproteome reveals posttranslational control of ketogenesis. Cell Metab 16, 672-83 23140645 Curated Info
11	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
12	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
13	Manes NP, et al. (2011) Discovery of mouse spleen signaling responses to anthrax using label-free quantitative phosphoproteomics via mass spectrometry. Mol Cell Proteomics 10, M110.000927 21189417 Curated Info
14	Huttlin EL, et al. (2010) A tissue-specific atlas of mouse protein phosphorylation and expression. Cell 143, 1174-89 21183079 Curated Info
15	Possemato A (2010) CST Curation Set: 9726; Year: 2010; Biosample/Treatment: tissue, liver/control; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser/Thr) PKD Substrate Antibody Cat#: 4381, PTMScan(R) Phospho-PKD Substrate Motif (LXRXXpS/pT) Immunoaffinity Beads Cat#: 1986 Curated Info
16	Possemato A (2010) CST Curation Set: 9729; Year: 2010; Biosample/Treatment: tissue, liver/AICAR; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser/Thr) PKD Substrate Antibody Cat#: 4381, PTMScan(R) Phospho-PKD Substrate Motif (LXRXXpS/pT) Immunoaffinity Beads Cat#: 1986 Curated Info
17	Possemato A (2010) CST Curation Set: 9728; Year: 2010; Biosample/Treatment: tissue, liver/control; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser/Thr) PKD Substrate Antibody Cat#: 4381, PTMScan(R) Phospho-PKD Substrate Motif (LXRXXpS/pT) Immunoaffinity Beads Cat#: 1986 Curated Info
18	Possemato A (2009) CST Curation Set: 8040; Year: 2011; Biosample/Treatment: tissue, liver/control; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
19	Possemato A (2009) CST Curation Set: 8043; Year: 2011; Biosample/Treatment: tissue, liver/AICAR; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
20	Possemato A (2009) CST Curation Set: 8045; Year: 2009; Biosample/Treatment: tissue, liver/control; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
21	Possemato A (2009) CST Curation Set: 8042; Year: 2011; Biosample/Treatment: tissue, liver/AICAR; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
22	Possemato A (2009) CST Curation Set: 8044; Year: 2009; Biosample/Treatment: tissue, liver/control; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
23	Possemato A (2009) CST Curation Set: 8041; Year: 2011; Biosample/Treatment: tissue, liver/control; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
24	Possemato A (2009) CST Curation Set: 8047; Year: 2009; Biosample/Treatment: tissue, liver/AICAR; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
25	Possemato A (2009) CST Curation Set: 8046; Year: 2009; Biosample/Treatment: tissue, liver/AICAR; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
26	Guo A (2009) CST Curation Set: 7791; Year: 2009; Biosample/Treatment: tissue, liver(STK11)/untreated; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser/Thr) PKD Substrate Antibody Cat#: 4381, PTMScan(R) Phospho-PKD Substrate Motif (LXRXXpS/pT) Immunoaffinity Beads Cat#: 1986 Curated Info
27	Guo A (2009) CST Curation Set: 7792; Year: 2009; Biosample/Treatment: tissue, liver(STK11)/untreated; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser/Thr) PKD Substrate Antibody Cat#: 4381, PTMScan(R) Phospho-PKD Substrate Motif (LXRXXpS/pT) Immunoaffinity Beads Cat#: 1986 Curated Info
28	Guo A (2009) CST Curation Set: 7801; Year: 2009; Biosample/Treatment: tissue, liver(STK11)/Metformin; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser/Thr) PKD Substrate Antibody Cat#: 4381, PTMScan(R) Phospho-PKD Substrate Motif (LXRXXpS/pT) Immunoaffinity Beads Cat#: 1986 Curated Info
29	Guo A (2009) CST Curation Set: 7770; Year: 2009; Biosample/Treatment: tissue, liver(STK11)/untreated; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
30	Guo A (2009) CST Curation Set: 7773; Year: 2009; Biosample/Treatment: tissue, liver(STK11)/Metformin; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
31	Guo A (2009) CST Curation Set: 7772; Year: 2009; Biosample/Treatment: tissue, liver(STK11)/Metformin; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
32	Guo A (2009) CST Curation Set: 7767; Year: 2009; Biosample/Treatment: tissue, liver/untreated; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
33	Guo A (2009) CST Curation Set: 7768; Year: 2009; Biosample/Treatment: tissue, liver/Metformin; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
34	Guo A (2009) CST Curation Set: 7766; Year: 2009; Biosample/Treatment: tissue, liver/untreated; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
35	Pan C, Gnad F, Olsen JV, Mann M (2008) Quantitative phosphoproteome analysis of a mouse liver cell line reveals specificity of phosphatase inhibitors. Proteomics 8, 4534-46 18846507 Curated Info
36	Villén J, Beausoleil SA, Gerber SA, Gygi SP (2007) Large-scale phosphorylation analysis of mouse liver. Proc Natl Acad Sci U S A 104, 1488-93 17242355 Curated Info