Ser259

Site Information
kVSNLQVsPkSEDIS SwissProt Entrez-Gene
Blast this site against: NCBI SwissProt PDB
Site Group ID: 449059

In vivo Characterization
Methods used to characterize site in vivo:	electrophoretic mobility shift ( 33 ) , mass spectrometry ( 1 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 13 , 14 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ) , mutation of modification site ( 33 )
Disease tissue studied:	breast cancer ( 5 , 6 , 14 , 33 ) , breast ductal carcinoma ( 5 ) , HER2 positive breast cancer ( 1 ) , luminal A breast cancer ( 1 ) , luminal B breast cancer ( 1 ) , breast cancer, surrounding tissue ( 1 ) , breast cancer, triple negative ( 1 , 5 ) , cervical cancer ( 22 ) , cervical adenocarcinoma ( 22 ) , leukemia ( 32 ) , chronic myelogenous leukemia ( 32 ) , lung cancer ( 9 , 14 ) , non-small cell lung cancer ( 14 ) , non-small cell lung adenocarcinoma ( 9 ) , ovarian cancer ( 5 )
Relevant cell line - cell type - tissue:	'stem, embryonic' ( 25 ) , 293 (epithelial) [AT1 (human), transfection, AT1R stable transfected HEK293] ( 20 ) , 293 (epithelial) ( 33 ) , A549 (pulmonary) ( 10 ) , breast ( 1 , 5 ) , BT-20 (breast cell) ( 14 ) , BT-549 (breast cell) ( 14 ) , Calu 6 (pulmonary) ( 14 ) , COS (fibroblast) ( 33 ) , H2009 (pulmonary) ( 14 ) , H2077 (pulmonary) ( 14 ) , H2887 (pulmonary) ( 14 ) , H322M (pulmonary) ( 14 ) , HCC1937 (breast cell) ( 14 ) , HCT116 (intestinal) ( 26 ) , HeLa (cervical) ( 4 , 13 , 16 , 19 , 31 , 33 ) , HeLa S3 (cervical) ( 17 , 22 , 23 , 30 ) , HeLa_Meta (cervical) ( 21 ) , HeLa_Pro (cervical) ( 21 ) , HeLa_Telo (cervical) ( 21 ) , HMLER ('stem, breast cancer') [CXCR4 (human), knockdown] ( 6 ) , HMLER ('stem, breast cancer') ( 6 ) , HOP62 (pulmonary) ( 14 ) , HUES-7 ('stem, embryonic') ( 24 ) , HUES-9 ('stem, embryonic') ( 18 ) , Jurkat (T lymphocyte) ( 11 , 27 , 28 , 29 ) , K562 (erythroid) ( 13 , 32 ) , liver ( 7 ) , lung ( 9 ) , MCF-7 (breast cell) ( 3 , 14 , 33 ) , MDA-MB-231 (breast cell) ( 14 ) , MDA-MB-435S (breast cell) ( 26 ) , MDA-MB-468 (breast cell) ( 14 ) , MV4-11 (macrophage) ( 26 ) , NCI-H1395 (pulmonary) ( 14 ) , NCI-H157 (pulmonary) ( 14 ) , NCI-H1648 (pulmonary) ( 14 ) , NCI-H1666 (pulmonary) ( 14 ) , NCI-H2030 (pulmonary) ( 14 ) , NCI-H322 (pulmonary) ( 14 ) , NCI-H520 (squamous) ( 14 ) , ovary ( 5 ) , PANC-1 (pancreatic) [PRP4 (human), knockdown, Lentiviral introduced doxycycline-inducible PRP4 shRNA] ( 8 ) , PANC-1 (pancreatic) ( 8 ) , PC9 (pulmonary) ( 14 )

Upstream Regulation
Regulatory protein:	PRP4 (human) ( 8 )
Putative in vivo kinases:	CDK1 (human) ( 33 )
Kinases, in vitro:	CDK1 (human) ( 33 )
Treatments:	angiotensin_2 ( 20 ) , ischemia ( 5 ) , metformin ( 3 ) , okadaic_acid ( 33 ) , PD98059 ( 33 ) , SB202190 ( 33 ) , seliciclib ( 33 ) , SP600125 ( 33 ) , UV ( 33 )

Downstream Regulation
Effects of modification on PIK3C2A:	protein conformation ( 33 ) , protein degradation ( 33 )

References
1	Mertins P, et al. (2016) Proteogenomics connects somatic mutations to signalling in breast cancer. Nature 534, 55-62 27251275 Curated Info
2	Boeing S, et al. (2016) Multiomic Analysis of the UV-Induced DNA Damage Response. Cell Rep 15, 1597-1610 27184836 Curated Info
3	Sacco F, et al. (2016) Deep Proteomics of Breast Cancer Cells Reveals that Metformin Rewires Signaling Networks Away from a Pro-growth State. Cell Syst 2, 159-71 27135362 Curated Info
4	Sharma K, et al. (2014) Ultradeep human phosphoproteome reveals a distinct regulatory nature of Tyr and Ser/Thr-based signaling. Cell Rep 8, 1583-94 25159151 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	Yi T, et al. (2014) Quantitative phosphoproteomic analysis reveals system-wide signaling pathways downstream of SDF-1/CXCR4 in breast cancer stem cells. Proc Natl Acad Sci U S A 111, E2182-90 24782546 Curated Info
7	Bian Y, et al. (2014) An enzyme assisted RP-RPLC approach for in-depth analysis of human liver phosphoproteome. J Proteomics 96, 253-62 24275569 Curated Info
8	Gao Q, et al. (2013) Evaluation of cancer dependence and druggability of PRP4 kinase using cellular, biochemical, and structural approaches. J Biol Chem 288, 30125-38 24003220 Curated Info
9	Schweppe DK, Rigas JR, Gerber SA (2013) Quantitative phosphoproteomic profiling of human non-small cell lung cancer tumors. J Proteomics 91, 286-96 23911959 Curated Info
10	Kim JY, et al. (2013) Dissection of TBK1 signaling via phosphoproteomics in lung cancer cells. Proc Natl Acad Sci U S A 110, 12414-9 23836654 Curated Info
11	Mertins P, et al. (2013) Integrated proteomic analysis of post-translational modifications by serial enrichment. Nat Methods 10, 634-7 23749302 Curated Info
12	Shiromizu T, et al. (2013) Identification of missing proteins in the neXtProt database and unregistered phosphopeptides in the PhosphoSitePlus database as part of the Chromosome-centric Human Proteome Project. J Proteome Res 12, 2414-21 23312004 Curated Info
13	Zhou H, et al. (2013) Toward a comprehensive characterization of a human cancer cell phosphoproteome. J Proteome Res 12, 260-71 23186163 Curated Info
14	Klammer M, et al. (2012) Phosphosignature predicts dasatinib response in non-small cell lung cancer. Mol Cell Proteomics 11, 651-68 22617229 Curated Info
15	Beli P, et al. (2012) Proteomic Investigations Reveal a Role for RNA Processing Factor THRAP3 in the DNA Damage Response. Mol Cell 46, 212-25 22424773 Curated Info
16	Grosstessner-Hain K, et al. (2011) Quantitative phospho-proteomics to investigate the polo-like kinase 1-dependent phospho-proteome. Mol Cell Proteomics 10, M111.008540 21857030 Curated Info
17	Santamaria A, et al. (2011) The Plk1-dependent phosphoproteome of the early mitotic spindle. Mol Cell Proteomics 10, M110.004457 20860994 Curated Info
18	Rigbolt KT, et al. (2011) System-wide temporal characterization of the proteome and phosphoproteome of human embryonic stem cell differentiation. Sci Signal 4, rs3 21406692 Curated Info
19	Kettenbach AN, et al. (2011) Quantitative phosphoproteomics identifies substrates and functional modules of aurora and polo-like kinase activities in mitotic cells. Sci Signal 4, rs5 21712546 Curated Info
20	Christensen GL, et al. (2010) Quantitative phosphoproteomics dissection of seven-transmembrane receptor signaling using full and biased agonists. Mol Cell Proteomics 9, 1540-53 20363803 Curated Info
21	Dulla K, et al. (2010) Quantitative site-specific phosphorylation dynamics of human protein kinases during mitotic progression. Mol Cell Proteomics 9, 1167-81 20097925 Curated Info
22	Olsen JV, et al. (2010) Quantitative phosphoproteomics reveals widespread full phosphorylation site occupancy during mitosis. Sci Signal 3, ra3 20068231 Curated Info
23	Malik R, et al. (2009) Quantitative analysis of the human spindle phosphoproteome at distinct mitotic stages. J Proteome Res 8, 4553-63 19691289 Curated Info
24	Van Hoof D, et al. (2009) Phosphorylation dynamics during early differentiation of human embryonic stem cells. Cell Stem Cell 5, 214-26 19664995 Curated Info
25	Brill LM, et al. (2009) Phosphoproteomic analysis of human embryonic stem cells. Cell Stem Cell 5, 204-13 19664994 Curated Info
26	Oppermann FS, et al. (2009) Large-scale proteomics analysis of the human kinome. Mol Cell Proteomics 8, 1751-64 19369195 Curated Info
27	Possemato A (2009) CST Curation Set: 6371; Year: 2009; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: pSP Curated Info
28	Possemato A (2009) CST Curation Set: 6369; Year: 2009; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: pSP Curated Info
29	Mayya V, et al. (2009) Quantitative phosphoproteomic analysis of T cell receptor signaling reveals system-wide modulation of protein-protein interactions. Sci Signal 2, ra46 19690332 Curated Info
30	Daub H, et al. (2008) Kinase-selective enrichment enables quantitative phosphoproteomics of the kinome across the cell cycle. Mol Cell 31, 438-48 18691976 Curated Info
31	Dephoure N, et al. (2008) A quantitative atlas of mitotic phosphorylation. Proc Natl Acad Sci U S A 105, 10762-7 18669648 Curated Info
32	Stokes M (2008) CST Curation Set: 4391; Year: 2008; Biosample/Treatment: cell line, K562/untreated; Disease: chronic myelogenous leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[STY]) Curated Info
33	Didichenko SA, Fragoso CM, Thelen M (2003) Mitotic and stress-induced phosphorylation of HsPI3K-C2alpha targets the protein for degradation. J Biol Chem 278, 26055-64 12719431 Curated Info