Ser26

Site Information
RPLIkAPsQLPLsGs SwissProt Entrez-Gene
Blast this site against: NCBI SwissProt PDB
Site Group ID: 477789
Available spectra: 1 CST

In vivo Characterization
Methods used to characterize site in vivo:	immunoprecipitation ( 2 ) , mass spectrometry ( 1 , 2 , 3 , 4 , 5 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ) , mass spectrometry (in vitro) ( 6 , 23 ) , mutation of modification site ( 2 , 6 ) , phospho-antibody ( 2 ) , western blotting ( 2 )
Disease tissue studied:	breast cancer ( 2 , 5 ) , HER2 positive breast cancer ( 3 ) , luminal A breast cancer ( 3 ) , luminal B breast cancer ( 3 ) , breast cancer, surrounding tissue ( 3 ) , breast cancer, triple negative ( 3 , 5 ) , cervical cancer ( 6 ) , cervical adenocarcinoma ( 6 ) , lung cancer ( 7 , 8 , 9 , 10 , 11 , 12 , 13 ) , non-small cell lung cancer ( 10 , 11 , 12 , 16 , 17 , 18 , 20 ) , non-small cell lung adenocarcinoma ( 9 , 10 , 11 , 12 , 13 , 16 , 18 ) , non-small cell large cell lung carcinoma ( 10 ) , non-small cell squamous cell lung carcinoma ( 9 , 20 ) , small-cell lung cancer ( 7 , 8 ) , neuroblastoma ( 1 )
Relevant cell line - cell type - tissue:	293 (epithelial) ( 34 , 35 ) , breast ( 3 , 5 ) , Cal-12T (pulmonary) ( 12 ) , CLB-Bar ( 1 ) , DMS153 (pulmonary) ( 11 ) , DMS53 (pulmonary) ( 8 ) , DMS79 (pulmonary) ( 7 ) , HCC15 (pulmonary) ( 9 ) , HCC44 (pulmonary) ( 12 ) , HCC78 (pulmonary) ( 10 ) , HEK293T (epithelial) ( 2 ) , HeLa (cervical) ( 4 , 19 , 23 , 32 ) , HeLa S3 (cervical) ( 6 ) , Jurkat (T lymphocyte) ( 14 , 21 , 22 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 33 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ) , K562 (erythroid) ( 19 ) , LOU-NH91 (squamous) ( 9 ) , lung ( 7 , 8 , 9 , 10 , 11 , 12 , 13 ) , MCF-10A (breast cell) ( 2 ) , MDA-MB-231 (breast cell) ( 2 ) , NCI-H128 (pulmonary) ( 7 ) , NCI-H1417 (pulmonary) ( 7 ) , NCI-H1437 (pulmonary) ( 11 , 12 ) , NCI-H1666 (pulmonary) ( 12 ) , NCI-H1703 (squamous) ( 9 , 20 ) , NCI-H1781 (pulmonary) ( 10 ) , NCI-H2073 (pulmonary) ( 9 , 11 ) , NCI-H209 (pulmonary) ( 7 , 11 ) , NCI-H2228 (pulmonary) ( 10 , 16 , 18 ) , NCI-H2342 (pulmonary) ( 9 ) , NCI-H2405 (pulmonary) ( 12 ) , NCI-H3122 (pulmonary) ( 10 , 17 ) , NCI-H446 (pulmonary) ( 8 ) , NCI-H524 (pulmonary) ( 7 ) , NCI-H526 (pulmonary) ( 8 ) , NCI-H661 (pulmonary) ( 10 ) , NCI-H69 (pulmonary) ( 8 ) , NCI-H82 (pulmonary) ( 8 ) , NCI-H838 (pulmonary) ( 11 )

Upstream Regulation
Putative in vivo kinases:	ATM (human) ( 2 ) , ATR (human) ( 2 )
Kinases, in vitro:	CDK1 (human) ( 6 ) , Chk1 (human) ( 23 )
Treatments:	AZD6738 ( 2 ) , BI2536 ( 32 ) , camptothecin ( 2 ) , etoposide ( 2 ) , ionizing_radiation ( 2 ) , MLN8054 ( 32 ) , siRNA ( 2 ) , taxol ( 32 ) , VE822 ( 2 )

Downstream Regulation
Effects of modification on KIFC1:	protein stabilization ( 2 ) , ubiquitination ( 2 )
Effects of modification on biological processes:	carcinogenesis, induced ( 2 ) , cell cycle regulation ( 2 ) , chromatin organization, altered ( 2 ) , DNA repair, induced ( 2 )

References
1	Borenäs M, et al. (2024) ALK signaling primes the DNA damage response sensitizing ALK-driven neuroblastoma to therapeutic ATR inhibition. Proc Natl Acad Sci U S A 121, e2315242121 38154064 Curated Info
2	Fan G, et al. (2021) The ATM and ATR kinases regulate centrosome clustering and tumor recurrence by targeting KIFC1 phosphorylation. Nat Commun 12, 20 33397932 Curated Info
3	Mertins P, et al. (2016) Proteogenomics connects somatic mutations to signalling in breast cancer. Nature 534, 55-62 27251275 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	Singh SA, et al. (2014) Co-regulation proteomics reveals substrates and mechanisms of APC/C-dependent degradation. EMBO J 33, 385-99 24510915 Curated Info
7	Rikova K, Hall B (2013) CST Curation Set: 20734, 21161, 30112, 30153, 30154; Year: 2013; Biosample/Treatment: cell line, H1417, DMS79, H128, H209, H524; Disease: -; TMT: Y; Specificities of Antibodies Used to Purify Peptides prior to LCMS: pY, p[ST], RXXp[ST], pSQ, p[ST]QG, LXRXXp[ST], p[ST]P Curated Info
8	Rikova K, Hall B (2013) CST Curation Set: 20735, 21162, 30155, 30156, 30157; Year: 2013; Biosample/Treatment: cell line, DMS53, H526, H69, H82, H446; Disease: -; TMT: Y; Specificities of Antibodies Used to Purify Peptides prior to LCMS: pY, p[ST], RXXp[ST], pSQ, p[ST]QG, LXRXXp[ST], p[ST]P Curated Info
9	Rikova K, Hall B (2013) CST Curation Set: 20739, 21166, 30167, 30168, 30169; Year: 2013; Biosample/Treatment: cell line, H2342, H2073, Lou-NH91, HCC15, H1703; Disease: -; TMT: Y; Specificities of Antibodies Used to Purify Peptides prior to LCMS: pY, p[ST], RXXp[ST], pSQ, p[ST]QG, LXRXXp[ST], p[ST]P Curated Info
10	Rikova K, Hall B (2013) CST Curation Set: 20740, 21167, 30170, 30171, 30172; Year: 2013; Biosample/Treatment: cell line, H2228, H3122, HCC78, H661, H1781; Disease: -; TMT: Y; Specificities of Antibodies Used to Purify Peptides prior to LCMS: pY, p[ST], RXXp[ST], pSQ, p[ST]QG, LXRXXp[ST], p[ST]P Curated Info
11	Rikova K, Hall B (2013) CST Curation Set: 20742, 21169, 30176, 30177, 30178; Year: 2013; Biosample/Treatment: cell line, H838, DMS153, H2073, H209, H1437; Disease: -; TMT: Y; Specificities of Antibodies Used to Purify Peptides prior to LCMS: pY, p[ST], RXXp[ST], pSQ, p[ST]QG, LXRXXp[ST], p[ST]P Curated Info
12	Rikova K, Hall B (2013) CST Curation Set: 20741, 21168, 30173, 30174, 30175; Year: 2013; Biosample/Treatment: cell line, H1666, CAL-12T, H2405, HCC44, H1437; Disease: -; TMT: Y; Specificities of Antibodies Used to Purify Peptides prior to LCMS: pY, p[ST], RXXp[ST], pSQ, p[ST]QG, LXRXXp[ST], p[ST]P Curated Info
13	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
14	Mertins P, et al. (2013) Integrated proteomic analysis of post-translational modifications by serial enrichment. Nat Methods 10, 634-7 23749302 Curated Info
15	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
16	Rikova K (2013) CST Curation Set: 18529; Year: 2013; Biosample/Treatment: cell line, H2228/crizotinib, geldanamycin; Disease: -; TMT: Y; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST], LXRXXp[ST] Antibodies Used to Purify Peptides prior to LCMS: Phospho-Akt Substrate (RXXS/T) (110B7E) Rabbit mAb Cat#: 9614 Phospho-AMPK Substrate Motif [LXRXX(pS/pT) MultiMab(TM) Rabbit mAb mix Cat#: 5759 Curated Info
17	Rikova K (2013) CST Curation Set: 18503; Year: 2013; Biosample/Treatment: cell line, H3122/crizotinib, geldanamycin; Disease: -; TMT: Y; Specificities of Antibodies Used to Purify Peptides prior to LCMS: pSQ, p[ST]QG Antibodies Used to Purify Peptides prior to LCMS: Phospho-ATM/ATR Substrate (SQ) (D23H2/D69H5) Rabbit mAb Cat#: 9607 Phospho-(Ser/Thr) ATM/ATR Substrate (S/T*QG) (P-S/T2-100) Rabbit mAb Cat#: 6966 Curated Info
18	Rikova K (2013) CST Curation Set: 18502; Year: 2013; Biosample/Treatment: cell line, H2228/crizotinib, geldanamycin; Disease: -; TMT: Y; Specificities of Antibodies Used to Purify Peptides prior to LCMS: pSQ, p[ST]QG Antibodies Used to Purify Peptides prior to LCMS: Phospho-ATM/ATR Substrate (SQ) (D23H2/D69H5) Rabbit mAb Cat#: 9607 Phospho-(Ser/Thr) ATM/ATR Substrate (S/T*QG) (P-S/T2-100) Rabbit mAb Cat#: 6966 Curated Info
19	Zhou H, et al. (2013) Toward a comprehensive characterization of a human cancer cell phosphoproteome. J Proteome Res 12, 260-71 23186163 Curated Info
20	Rikova K (2012) CST Curation Set: 16147; Year: 2012; Biosample/Treatment: cell line, H1703/gleevec; Disease: -; TMT: Y; Specificities of Antibodies Used to Purify Peptides prior to LCMS: pSQ, p[ST]QG Antibodies Used to Purify Peptides prior to LCMS: Phospho-ATM/ATR Substrate (SQ) (D23H2/D69H5) Rabbit mAb Cat#: 9607 Phospho-(Ser/Thr) ATM/ATR Substrate (S/T*QG) (P-S/T2-100) Rabbit mAb Cat#: 6966 Curated Info
21	Mulhern D (2012) CST Curation Set: 14049; Year: 2012; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Curated Info
22	Mulhern D (2012) CST Curation Set: 14050; Year: 2012; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho-ATM/ATR Substrate (SQ) (D23H2/D69H5) Rabbit mAb Cat#: 9607, PTMScan(R) Phospho-ATM/ATR Substrate (SQ) Immunoaffinity Beads Cat#: 9884 Curated Info
23	Blasius M, et al. (2011) A phospho-proteomic screen identifies substrates of the checkpoint kinase Chk1. Genome Biol 12, R78 21851590 Curated Info
24	Guo A (2011) CST Curation Set: 12070; Year: 2011; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: (F/Y/M)Xp[ST](L/I/M) Curated Info
25	Guo A (2011) CST Curation Set: 11634; Year: 2011; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho(Ser/Thr) ATM/ATR Substrate Antibody (polyAB) Cat#: 3005, PTMScan(R) Phospho-ATM/ATR Substrate Motif (pS/pTQ) Immunoaffinity Beads Cat#: 1980 Curated Info
26	Guo A (2011) CST Curation Set: 11523; Year: 2011; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho-ATM/ATR Substrate (SQ) (D23H2/D69H5) Rabbit mAb Cat#: 9607, PTMScan(R) Phospho-ATM/ATR Substrate (SQ) Immunoaffinity Beads Cat#: 9884 Curated Info
27	Guo A (2011) CST Curation Set: 11524; Year: 2011; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho-ATM/ATR Substrate (SQ) (D23H2/D69H5) Rabbit mAb Cat#: 9607, PTMScan(R) Phospho-ATM/ATR Substrate (SQ) Immunoaffinity Beads Cat#: 9884 Curated Info
28	Guo A (2011) CST Curation Set: 11375; Year: 2011; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Curated Info
29	Guo A (2011) CST Curation Set: 11379; Year: 2011; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho(Ser/Thr) ATM/ATR Substrate Antibody (polyAB) Cat#: 3005, PTMScan(R) Phospho-ATM/ATR Substrate Motif (pS/pTQ) Immunoaffinity Beads Cat#: 1980 Curated Info
30	Guo A (2011) CST Curation Set: 11380; Year: 2011; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Curated Info
31	Guo A (2011) CST Curation Set: 11384; Year: 2011; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho(Ser/Thr) ATM/ATR Substrate Antibody (polyAB) Cat#: 3005, PTMScan(R) Phospho-ATM/ATR Substrate Motif (pS/pTQ) Immunoaffinity Beads Cat#: 1980 Curated Info
32	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
33	Possemato A (2010) CST Curation Set: 10303; Year: 2010; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho(Ser/Thr) ATM/ATR Substrate Antibody (polyAB) Cat#: 3005, PTMScan(R) Phospho-ATM/ATR Substrate Motif (pS/pTQ) Immunoaffinity Beads Cat#: 1980 Curated Info
34	Guo A (2010) CST Curation Set: 6268; Year: 2010; Biosample/Treatment: cell line, 293/control; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
35	Guo A (2010) CST Curation Set: 6269; Year: 2010; Biosample/Treatment: cell line, 293/Insulin; Disease: -; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: RXXp[ST] Curated Info
36	Possemato A (2010) CST Curation Set: 9961; Year: 2010; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Curated Info
37	Possemato A (2010) CST Curation Set: 9638; Year: 2010; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho(Ser/Thr) ATM/ATR Substrate Antibody (polyAB) Cat#: 3005, PTMScan(R) Phospho-ATM/ATR Substrate Motif (pS/pTQ) Immunoaffinity Beads Cat#: 1980 Curated Info
38	Possemato A (2010) CST Curation Set: 9637; Year: 2010; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho(Ser/Thr) ATM/ATR Substrate Antibody (polyAB) Cat#: 3005, PTMScan(R) Phospho-ATM/ATR Substrate Motif (pS/pTQ) Immunoaffinity Beads Cat#: 1980 Curated Info
39	Possemato A (2010) CST Curation Set: 8986; Year: 2010; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho(Ser/Thr) ATM/ATR Substrate Antibody (polyAB) Cat#: 3005, PTMScan(R) Phospho-ATM/ATR Substrate Motif (pS/pTQ) Immunoaffinity Beads Cat#: 1980 Curated Info
40	Possemato A (2010) CST Curation Set: 8994; Year: 2010; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho(Ser/Thr) ATM/ATR Substrate Antibody (polyAB) Cat#: 3005, PTMScan(R) Phospho-ATM/ATR Substrate Motif (pS/pTQ) Immunoaffinity Beads Cat#: 1980 Curated Info
41	Possemato A (2010) CST Curation Set: 8970; Year: 2010; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho(Ser/Thr) ATM/ATR Substrate Antibody (polyAB) Cat#: 3005, PTMScan(R) Phospho-ATM/ATR Substrate Motif (pS/pTQ) Immunoaffinity Beads Cat#: 1980 Curated Info
42	Possemato A (2009) CST Curation Set: 7976; 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: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho(Ser/Thr) ATM/ATR Substrate Antibody (polyAB) Cat#: 3005, PTMScan(R) Phospho-ATM/ATR Substrate Motif (pS/pTQ) Immunoaffinity Beads Cat#: 1980 Curated Info
43	Possemato A (2009) CST Curation Set: 7977; 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: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho(Ser/Thr) ATM/ATR Substrate Antibody (polyAB) Cat#: 3005, PTMScan(R) Phospho-ATM/ATR Substrate Motif (pS/pTQ) Immunoaffinity Beads Cat#: 1980 Curated Info
44	Possemato A (2009) CST Curation Set: 7978; 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: p[ST]Q Antibodies Used to Purify Peptides prior to LCMS: Phospho(Ser/Thr) ATM/ATR Substrate Antibody (polyAB) Cat#: 3005, PTMScan(R) Phospho-ATM/ATR Substrate Motif (pS/pTQ) Immunoaffinity Beads Cat#: 1980 Curated Info