Ser22

Site Information
QAsstPLsPtRItRL SwissProt Entrez-Gene
Blast this site against: NCBI SwissProt PDB
Site Group ID: 452604

In vivo Characterization
Methods used to characterize site in vivo:	immunoassay ( 1 ) , mass spectrometry ( 2 , 4 , 5 , 6 , 7 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ) , mass spectrometry (in vitro) ( 23 ) , phospho-antibody ( 1 ) , western blotting ( 1 )
Disease tissue studied:	anthrax infection ( 22 ) , brain cancer ( 16 , 17 , 18 , 19 ) , neuroendocrine cancer ( 16 , 17 , 18 , 19 ) , melanoma skin cancer ( 31 )
Relevant cell line - cell type - tissue:	'3T3-L1, differentiated' (adipocyte) ( 5 , 10 ) , 'brain, cerebral cortex' ( 27 ) , 'fat, brown' ( 24 ) , 3T3 (fibroblast) ( 36 ) , BaF3 ('B lymphocyte, precursor') [JAK3 (human), transfection] ( 2 ) , brain ( 15 , 16 , 17 , 18 , 19 ) , C2C12 (myoblast) ( 28 , 39 ) , C3H10T1/2 (fibroblast) [FGFR2 (mouse), FGFR2 K668E] ( 32 , 33 , 34 ) , heart ( 11 , 24 , 29 , 37 ) , HeLa (cervical) ( 1 ) , Hepa 1-6 (epithelial) ( 35 ) , HL-1 (myocyte) [Akt1 (mouse), knockdown, stable lentiviral expression of Akt1 shRNA] ( 7 ) , HL-1 (myocyte) [Akt2 (mouse), knockdown, stable lentiviral expression of Akt2 shRNA] ( 7 ) , HL-1 (myocyte) ( 7 ) , kidney ( 24 ) , liver ( 9 , 14 , 24 , 38 ) , liver [leptin (mouse), homozygous knockout] ( 14 ) , lung ( 24 ) , macrophage-bone marrow ( 25 ) , macrophage-bone marrow [DUSP1 (mouse), homozygous knockout] ( 25 ) , macrophage-peritoneum ( 13 ) , MC3T3-E1 (preosteoblast) ( 4 ) , MEF (fibroblast) [p53 (mouse), homozygous knockout] ( 20 ) , MEF (fibroblast) [Raptor (mouse), knockdown] ( 12 ) , MEF (fibroblast) [RICTOR (mouse), knockdown] ( 12 ) , MEF (fibroblast) [TSC2 (mouse), homozygous knockout] ( 21 ) , MEF (fibroblast) ( 12 ) , mpkCCD (renal) ( 26 ) , pancreas ( 24 ) , RAW 264.7 (macrophage) ( 6 ) , RAW 267.4 (macrophage) ( 30 ) , skin [mGluR1 (mouse), transgenic, TG mutant mice] ( 31 ) , spleen ( 22 , 24 ) , testis ( 24 )

Upstream Regulation
Regulatory protein:	Raptor (mouse) ( 12 ) , RICTOR (mouse) ( 12 ) , TMPO (human) ( 1 )
Kinases, in vitro:	ERK2 (mouse) ( 23 )
Treatments:	BMP2 ( 28 ) , insulin ( 10 ) , LPS ( 25 ) , LY294002 ( 10 ) , okadaic_acid ( 36 )

References
1	Naetar N, et al. (2021) LAP2alpha maintains a mobile and low assembly state of A-type lamins in the nuclear interior. Elife 10 33605210 Curated Info
2	Degryse S, et al. (2017) Mutant JAK3 phosphoproteomic profiling predicts synergism between JAK3 inhibitors and MEK/BCL2 inhibitors for the treatment of T-cell acute lymphoblastic leukemia. Leukemia 32 28852199 Curated Info
3	Sacco F, et al. (2016) Glucose-regulated and drug-perturbed phosphoproteome reveals molecular mechanisms controlling insulin secretion. Nat Commun 7, 13250 27841257 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	Parker BL, et al. (2015) Targeted phosphoproteomics of insulin signaling using data-independent acquisition mass spectrometry. Sci Signal 8, rs6 26060331 Curated Info
6	Pinto SM, et al. (2015) Quantitative phosphoproteomic analysis of IL-33-mediated signaling. Proteomics 15, 532-44 25367039 Curated Info
7	Reinartz M, Raupach A, Kaisers W, Gödecke A (2014) AKT1 and AKT2 induce distinct phosphorylation patterns in HL-1 cardiac myocytes. J Proteome Res 13, 4232-45 25162660 Curated Info
8	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
9	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
10	Humphrey SJ, et al. (2013) Dynamic Adipocyte Phosphoproteome Reveals that Akt Directly Regulates mTORC2. Cell Metab 17, 1009-20 23684622 Curated Info
11	Lundby A, et al. (2013) In vivo phosphoproteomics analysis reveals the cardiac targets of β-adrenergic receptor signaling. Sci Signal 6, rs11 23737553 Curated Info
12	Robitaille AM, et al. (2013) Quantitative phosphoproteomics reveal mTORC1 activates de novo pyrimidine synthesis. Science 339, 1320-3 23429704 Curated Info
13	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
14	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
15	Goswami T, et al. (2012) Comparative phosphoproteomic analysis of neonatal and adult murine brain. Proteomics 12, 2185-9 22807455 Curated Info
16	Guo A (2011) CST Curation Set: 12736; Year: 2011; Biosample/Treatment: tissue, brain/untreated; Disease: brain cancer; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: PXpSP, pSPX(K/R) Antibodies Used to Purify Peptides prior to LCMS: Phospho-MAPK/CDK Substrates (PXSP or SPXR/K) (34B2) Rabbit mAb Cat#: 2325, PTMScan(R) Phospho-MAPK/CDK Substrate Motif (PXSP, SPXK/R) Immunoaffinity Beads Cat#: 1982 Curated Info
17	Guo A (2011) CST Curation Set: 12737; Year: 2011; Biosample/Treatment: tissue, brain/untreated; Disease: brain cancer; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: PXpSP, pSPX(K/R) Antibodies Used to Purify Peptides prior to LCMS: Phospho-MAPK/CDK Substrates (PXSP or SPXR/K) (34B2) Rabbit mAb Cat#: 2325, PTMScan(R) Phospho-MAPK/CDK Substrate Motif (PXSP, SPXK/R) Immunoaffinity Beads Cat#: 1982 Curated Info
18	Guo A (2011) CST Curation Set: 12738; Year: 2011; Biosample/Treatment: tissue, brain/untreated; Disease: brain cancer; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: PXpSP, pSPX(K/R) Antibodies Used to Purify Peptides prior to LCMS: Phospho-MAPK/CDK Substrates (PXSP or SPXR/K) (34B2) Rabbit mAb Cat#: 2325, PTMScan(R) Phospho-MAPK/CDK Substrate Motif (PXSP, SPXK/R) Immunoaffinity Beads Cat#: 1982 Curated Info
19	Guo A (2011) CST Curation Set: 12739; Year: 2011; Biosample/Treatment: tissue, brain/untreated; Disease: brain cancer; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: PXpSP, pSPX(K/R) Antibodies Used to Purify Peptides prior to LCMS: Phospho-MAPK/CDK Substrates (PXSP or SPXR/K) (34B2) Rabbit mAb Cat#: 2325, PTMScan(R) Phospho-MAPK/CDK Substrate Motif (PXSP, SPXK/R) Immunoaffinity Beads Cat#: 1982 Curated Info
20	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
21	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
22	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
23	Carlson SM, et al. (2011) Large-Scale Discovery of ERK2 Substrates Identifies ERK-Mediated Transcriptional Regulation by ETV3. Sci Signal 4, rs11 22028470 Curated Info
24	Huttlin EL, et al. (2010) A tissue-specific atlas of mouse protein phosphorylation and expression. Cell 143, 1174-89 21183079 Curated Info
25	Weintz G, et al. (2010) The phosphoproteome of toll-like receptor-activated macrophages. Mol Syst Biol 6, 371 20531401 Curated Info
26	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
27	Tweedie-Cullen RY, Reck JM, Mansuy IM (2009) Comprehensive mapping of post-translational modifications on synaptic, nuclear, and histone proteins in the adult mouse brain. J Proteome Res 8, 4966-82 19737024 Curated Info
28	Kim BG, et al. (2009) 'Two-stage double-technique hybrid (TSDTH)' identification strategy for the analysis of BMP2-induced transdifferentiation of premyoblast C2C12 cells to osteoblast. J Proteome Res 8, 4441-54 19655815 Curated Info
29	Zhou J (2009) CST Curation Set: 7433; Year: 2009; Biosample/Treatment: tissue, heart/untreated; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: pSP Curated Info
30	Trost M, et al. (2009) The phagosomal proteome in interferon-gamma-activated macrophages. Immunity 30, 143-54 19144319 Curated Info
31	Zanivan S, et al. (2008) Solid tumor proteome and phosphoproteome analysis by high resolution mass spectrometry. J Proteome Res 7, 5314-26 19367708 Curated Info
32	Li Y (2008) CST Curation Set: 5592; Year: 2008; Biosample/Treatment: cell line, 10T1/2FGFRK668E/FGF; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: PXpSP, pSPX(K/R) Antibodies Used to Purify Peptides prior to LCMS: Phospho-MAPK/CDK Substrates (PXSP or SPXR/K) (34B2) Rabbit mAb Cat#: 2325, PTMScan(R) Phospho-MAPK/CDK Substrate Motif (PXSP, SPXK/R) Immunoaffinity Beads Cat#: 1982 Curated Info
33	Li Y (2008) CST Curation Set: 5593; Year: 2008; Biosample/Treatment: cell line, 10T1/2FGFRK668E/FGF; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: PXpSP, pSPX(K/R) Antibodies Used to Purify Peptides prior to LCMS: Phospho-MAPK/CDK Substrates (PXSP or SPXR/K) (34B2) Rabbit mAb Cat#: 2325, PTMScan(R) Phospho-MAPK/CDK Substrate Motif (PXSP, SPXK/R) Immunoaffinity Beads Cat#: 1982 Curated Info
34	Li Y (2008) CST Curation Set: 5591; Year: 2008; Biosample/Treatment: cell line, 10T1/2FGFRK668E/FGF; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: PXpSP, pSPX(K/R) Antibodies Used to Purify Peptides prior to LCMS: Phospho-MAPK/CDK Substrates (PXSP or SPXR/K) (34B2) Rabbit mAb Cat#: 2325, PTMScan(R) Phospho-MAPK/CDK Substrate Motif (PXSP, SPXK/R) Immunoaffinity Beads Cat#: 1982 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	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
37	Guo A (2007) CST Curation Set: 2829; Year: 2007; Biosample/Treatment: tissue, heart/-; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: PXpSP, pSPX(K/R) Antibodies Used to Purify Peptides prior to LCMS: Phospho-MAPK/CDK Substrates (PXSP or SPXR/K) (34B2) Rabbit mAb Cat#: 2325, PTMScan(R) Phospho-MAPK/CDK Substrate Motif (PXSP, SPXK/R) Immunoaffinity Beads Cat#: 1982 Curated Info
38	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
39	Puente LG, Voisin S, Lee RE, Megeney LA (2006) Reconstructing the regulatory kinase pathways of myogenesis from phosphopeptide data. Mol Cell Proteomics 5, 2244-51 16971385 Curated Info