Ser27

Site Information
VkKKARksAGAAkRk SwissProt Entrez-Gene
Blast this site against: NCBI SwissProt PDB
Site Group ID: 476058

In vivo Characterization
Methods used to characterize site in vivo:	mass spectrometry ( 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ) , modification-specific antibody ( 1 ) , phospho-antibody ( 1 ) , western blotting ( 1 )
Disease tissue studied:	breast cancer ( 1 , 2 )
Relevant cell line - cell type - tissue:	HEK293T (epithelial) ( 10 ) , HeLa (cervical) ( 3 ) , Jurkat (T lymphocyte) ( 4 , 5 , 6 , 7 , 8 , 9 ) , MDA-MB-231 (breast cell) ( 2 ) , T47D (breast cell) ( 1 )

Downstream Regulation
Effects of modification on H1E:	molecular association, regulation ( 11 )
Inhibit interaction with:	CBX1 (human) ( 11 ) , CBX3 (human) ( 11 ) , HP1 alpha (human) ( 11 )

References
1	Terme JM, et al. (2014) Dynamics and dispensability of variant-specific histone H1 Lys-26/Ser-27 and Thr-165 post-translational modifications. FEBS Lett 588, 2353-62 24873882 Curated Info
2	Harshman SW, et al. (2014) Histone H1 phosphorylation in breast cancer. J Proteome Res 13, 2453-67 24601643 Curated Info
3	Zhou J (2009) CST Curation Set: 6239; Year: 2009; Biosample/Treatment: cell line, HeLa/nocodazole; Disease: cervical adenocarcinoma; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: (K/R)XpSX(K/R)Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) PKC Substrate Antibody Cat#: 2261, PTMScan(R) Phospho-PKC Substrate Motif (K/RXpSXK/R) Immunoaffinity Beads Cat#: 1985 Curated Info
4	Zhou J (2009) CST Curation Set: 5899; Year: 2009; Biosample/Treatment: cell line, Jurkat/untreated; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: (K/R)XpSX(K/R)Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) PKC Substrate Antibody Cat#: 2261, PTMScan(R) Phospho-PKC Substrate Motif (K/RXpSXK/R) Immunoaffinity Beads Cat#: 1985 Curated Info
5	Zhou J (2009) CST Curation Set: 5896; 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: (K/R)XpSX(K/R)Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) PKC Substrate Antibody Cat#: 2261, PTMScan(R) Phospho-PKC Substrate Motif (K/RXpSXK/R) Immunoaffinity Beads Cat#: 1985 Curated Info
6	Zhou J (2009) CST Curation Set: 5897; 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: (K/R)XpSX(K/R)Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) PKC Substrate Antibody Cat#: 2261, PTMScan(R) Phospho-PKC Substrate Motif (K/RXpSXK/R) Immunoaffinity Beads Cat#: 1985 Curated Info
7	Zhou J (2008) CST Curation Set: 5467; Year: 2008; Biosample/Treatment: cell line, Jurkat/calyculin_A & pervanadate; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: (K/R)XpSX(K/R)Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) PKC Substrate Antibody Cat#: 2261, PTMScan(R) Phospho-PKC Substrate Motif (K/RXpSXK/R) Immunoaffinity Beads Cat#: 1985 Curated Info
8	Zhou J (2008) CST Curation Set: 5468; Year: 2008; Biosample/Treatment: cell line, Jurkat/untreated; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: (K/R)XpSX(K/R)Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) PKC Substrate Antibody Cat#: 2261, PTMScan(R) Phospho-PKC Substrate Motif (K/RXpSXK/R) Immunoaffinity Beads Cat#: 1985 Curated Info
9	Zhou J (2008) CST Curation Set: 5469; Year: 2008; Biosample/Treatment: cell line, Jurkat/untreated; Disease: T cell leukemia; SILAC: -; Specificities of Antibodies Used to Purify Peptides prior to LCMS: (K/R)XpSX(K/R)Antibodies Used to Purify Peptides prior to LCMS: Phospho-(Ser) PKC Substrate Antibody Cat#: 2261, PTMScan(R) Phospho-PKC Substrate Motif (K/RXpSXK/R) Immunoaffinity Beads Cat#: 1985 Curated Info
10	Molina H, et al. (2007) Global proteomic profiling of phosphopeptides using electron transfer dissociation tandem mass spectrometry. Proc Natl Acad Sci U S A 104, 2199-204 17287340 Curated Info
11	Daujat S, et al. (2005) HP1 binds specifically to Lys26-methylated histone H1.4, whereas simultaneous Ser27 phosphorylation blocks HP1 binding. J Biol Chem 280, 38090-5 16127177 Curated Info