KS6A3_HUMAN - dbPTM
KS6A3_HUMAN - PTM Information in dbPTM
Basic Information of Protein
UniProt ID KS6A3_HUMAN
UniProt AC P51812
Protein Name Ribosomal protein S6 kinase alpha-3
Gene Name RPS6KA3
Organism Homo sapiens (Human).
Sequence Length 740
Subcellular Localization Nucleus. Cytoplasm.
Protein Description Serine/threonine-protein kinase that acts downstream of ERK (MAPK1/ERK2 and MAPK3/ERK1) signaling and mediates mitogenic and stress-induced activation of the transcription factors CREB1, ETV1/ER81 and NR4A1/NUR77, regulates translation through RPS6 and EIF4B phosphorylation, and mediates cellular proliferation, survival, and differentiation by modulating mTOR signaling and repressing pro-apoptotic function of BAD and DAPK1. In fibroblast, is required for EGF-stimulated phosphorylation of CREB1 and histone H3 at 'Ser-10', which results in the subsequent transcriptional activation of several immediate-early genes. In response to mitogenic stimulation (EGF and PMA), phosphorylates and activates NR4A1/NUR77 and ETV1/ER81 transcription factors and the cofactor CREBBP. Upon insulin-derived signal, acts indirectly on the transcription regulation of several genes by phosphorylating GSK3B at 'Ser-9' and inhibiting its activity. Phosphorylates RPS6 in response to serum or EGF via an mTOR-independent mechanism and promotes translation initiation by facilitating assembly of the preinitiation complex. In response to insulin, phosphorylates EIF4B, enhancing EIF4B affinity for the EIF3 complex and stimulating cap-dependent translation. Is involved in the mTOR nutrient-sensing pathway by directly phosphorylating TSC2 at 'Ser-1798', which potently inhibits TSC2 ability to suppress mTOR signaling, and mediates phosphorylation of RPTOR, which regulates mTORC1 activity and may promote rapamycin-sensitive signaling independently of the PI3K/AKT pathway. Mediates cell survival by phosphorylating the pro-apoptotic proteins BAD and DAPK1 and suppressing their pro-apoptotic function. Promotes the survival of hepatic stellate cells by phosphorylating CEBPB in response to the hepatotoxin carbon tetrachloride (CCl4). Is involved in cell cycle regulation by phosphorylating the CDK inhibitor CDKN1B, which promotes CDKN1B association with 14-3-3 proteins and prevents its translocation to the nucleus and inhibition of G1 progression. In LPS-stimulated dendritic cells, is involved in TLR4-induced macropinocytosis, and in myeloma cells, acts as effector of FGFR3-mediated transformation signaling, after direct phosphorylation at Tyr-529 by FGFR3. Negatively regulates EGF-induced MAPK1/3 phosphorylation via phosphorylation of SOS1. Phosphorylates SOS1 at 'Ser-1134' and 'Ser-1161' that create YWHAB and YWHAE binding sites and which contribute to the negative regulation of MAPK1/3 phosphorylation (By similarity). Phosphorylates EPHA2 at 'Ser-897', the RPS6KA-EPHA2 signaling pathway controls cell migration. [PubMed: 26158630]
Protein Sequence MPLAQLADPWQKMAVESPSDSAENGQQIMDEPMGEEEINPQTEEVSIKEIAITHHVKEGHEKADPSQFELLKVLGQGSFGKVFLVKKISGSDARQLYAMKVLKKATLKVRDRVRTKMERDILVEVNHPFIVKLHYAFQTEGKLYLILDFLRGGDLFTRLSKEVMFTEEDVKFYLAELALALDHLHSLGIIYRDLKPENILLDEEGHIKLTDFGLSKESIDHEKKAYSFCGTVEYMAPEVVNRRGHTQSADWWSFGVLMFEMLTGTLPFQGKDRKETMTMILKAKLGMPQFLSPEAQSLLRMLFKRNPANRLGAGPDGVEEIKRHSFFSTIDWNKLYRREIHPPFKPATGRPEDTFYFDPEFTAKTPKDSPGIPPSANAHQLFRGFSFVAITSDDESQAMQTVGVHSIVQQLHRNSIQFTDGYEVKEDIGVGSYSVCKRCIHKATNMEFAVKIIDKSKRDPTEEIEILLRYGQHPNIITLKDVYDDGKYVYVVTELMKGGELLDKILRQKFFSEREASAVLFTITKTVEYLHAQGVVHRDLKPSNILYVDESGNPESIRICDFGFAKQLRAENGLLMTPCYTANFVAPEVLKRQGYDAACDIWSLGVLLYTMLTGYTPFANGPDDTPEEILARIGSGKFSLSGGYWNSVSDTAKDLVSKMLHVDPHQRLTAALVLRHPWIVHWDQLPQYQLNRQDAPHLVKGAMAATYSALNRNQSPVLEPVGRSTLAQRRGIKKITSTAL
Overview of Protein Modification Sites with Functional and Structural Information
Experimental Post-Translational Modification Sites

* ASA = Accessible Surface Area

Locations Modification Substrate Peptides
&
Secondary Structure
ASA (%) Reference Orthologous
Protein Cluster
17PhosphorylationWQKMAVESPSDSAEN
HHHHCCCCCCCCHHH
24.0925159151
19PhosphorylationKMAVESPSDSAENGQ
HHCCCCCCCCHHHCC
54.1825159151
21PhosphorylationAVESPSDSAENGQQI
CCCCCCCCHHHCCCC
41.6530576142
57UbiquitinationIAITHHVKEGHEKAD
HHHHHHHHCCCCCCC
54.33-
62AcetylationHVKEGHEKADPSQFE
HHHCCCCCCCHHHHH
53.0325953088
62UbiquitinationHVKEGHEKADPSQFE
HHHCCCCCCCHHHHH
53.03-
66PhosphorylationGHEKADPSQFELLKV
CCCCCCHHHHHHHHH
48.3120068231
72UbiquitinationPSQFELLKVLGQGSF
HHHHHHHHHHCCCCC
48.3021890473
78PhosphorylationLKVLGQGSFGKVFLV
HHHHCCCCCCEEEEE
23.9620068231
81UbiquitinationLGQGSFGKVFLVKKI
HCCCCCCEEEEEEEC
28.0121890473
81AcetylationLGQGSFGKVFLVKKI
HCCCCCCEEEEEEEC
28.0189713
100AcetylationARQLYAMKVLKKATL
HHHHHHHHHHHHHCH
35.927987735
103AcetylationLYAMKVLKKATLKVR
HHHHHHHHHHCHHHH
43.267987747
144PhosphorylationFQTEGKLYLILDFLR
EECCCEEEEEEHHHH
8.65-
160PhosphorylationGDLFTRLSKEVMFTE
CCHHHHHCCCCCCCH
24.3912618428
164SulfoxidationTRLSKEVMFTEEDVK
HHHCCCCCCCHHHHH
3.4521406390
166PhosphorylationLSKEVMFTEEDVKFY
HCCCCCCCHHHHHHH
21.9922210691
195UbiquitinationGIIYRDLKPENILLD
CCEECCCCHHHEEEC
55.35-
210PhosphorylationEEGHIKLTDFGLSKE
CCCCEEECCCCCCHH
25.0421082442
215PhosphorylationKLTDFGLSKESIDHE
EECCCCCCHHHCCCC
34.4528857561
216UbiquitinationLTDFGLSKESIDHEK
ECCCCCCHHHCCCCH
61.60-
218PhosphorylationDFGLSKESIDHEKKA
CCCCCHHHCCCCHHH
36.7328857561
226PhosphorylationIDHEKKAYSFCGTVE
CCCCHHHHHCCCCHH
15.9122322096
227PhosphorylationDHEKKAYSFCGTVEY
CCCHHHHHCCCCHHH
20.9422322096
231PhosphorylationKAYSFCGTVEYMAPE
HHHHCCCCHHHHCHH
16.0222322096
234PhosphorylationSFCGTVEYMAPEVVN
HCCCCHHHHCHHHHC
8.3423927012
274UbiquitinationPFQGKDRKETMTMIL
CCCCCCHHHHHHHHH
68.61-
276PhosphorylationQGKDRKETMTMILKA
CCCCHHHHHHHHHHH
22.4523612710
278PhosphorylationKDRKETMTMILKAKL
CCHHHHHHHHHHHHH
14.4229457462
297PhosphorylationFLSPEAQSLLRMLFK
CCCHHHHHHHHHHHH
36.1024719451
322UbiquitinationPDGVEEIKRHSFFST
CCCHHHHHHHCCCCC
47.54-
325PhosphorylationVEEIKRHSFFSTIDW
HHHHHHHCCCCCCCH
31.8320873877
328PhosphorylationIKRHSFFSTIDWNKL
HHHHCCCCCCCHHHH
23.5729083192
329PhosphorylationKRHSFFSTIDWNKLY
HHHCCCCCCCHHHHH
20.1420873877
336PhosphorylationTIDWNKLYRREIHPP
CCCHHHHHHCCCCCC
14.8329083192
345UbiquitinationREIHPPFKPATGRPE
CCCCCCCCCCCCCCC
39.24-
348PhosphorylationHPPFKPATGRPEDTF
CCCCCCCCCCCCCCE
42.1028555341
354PhosphorylationATGRPEDTFYFDPEF
CCCCCCCCEECCHHH
20.6919060867
356PhosphorylationGRPEDTFYFDPEFTA
CCCCCCEECCHHHCC
14.7926074081
362PhosphorylationFYFDPEFTAKTPKDS
EECCHHHCCCCCCCC
26.1130576142
364AcetylationFDPEFTAKTPKDSPG
CCHHHCCCCCCCCCC
63.4020167786
364UbiquitinationFDPEFTAKTPKDSPG
CCHHHCCCCCCCCCC
63.40-
365PhosphorylationDPEFTAKTPKDSPGI
CHHHCCCCCCCCCCC
32.8622167270
369PhosphorylationTAKTPKDSPGIPPSA
CCCCCCCCCCCCCCC
31.0229255136
375PhosphorylationDSPGIPPSANAHQLF
CCCCCCCCCCHHHHH
28.8829255136
386PhosphorylationHQLFRGFSFVAITSD
HHHHCCCEEEEEECC
22.9518156174
391PhosphorylationGFSFVAITSDDESQA
CCEEEEEECCCHHHH
19.1622199227
392PhosphorylationFSFVAITSDDESQAM
CEEEEEECCCHHHHH
36.6322199227
396PhosphorylationAITSDDESQAMQTVG
EEECCCHHHHHHHHC
30.1822199227
406PhosphorylationMQTVGVHSIVQQLHR
HHHHCHHHHHHHHHH
23.2727080861
415PhosphorylationVQQLHRNSIQFTDGY
HHHHHHCCCCCCCCC
20.0929255136
419PhosphorylationHRNSIQFTDGYEVKE
HHCCCCCCCCCEECC
16.4929691806
422PhosphorylationSIQFTDGYEVKEDIG
CCCCCCCCEECCCCC
21.9923927012
433PhosphorylationEDIGVGSYSVCKRCI
CCCCCCCHHHHHHHH
10.13-
437UbiquitinationVGSYSVCKRCIHKAT
CCCHHHHHHHHHHHH
48.42-
470PhosphorylationEIEILLRYGQHPNII
HHHHHHHHCCCCCEE
22.5518156174
478PhosphorylationGQHPNIITLKDVYDD
CCCCCEEEEEEECCC
24.7720071362
480UbiquitinationHPNIITLKDVYDDGK
CCCEEEEEEECCCCC
36.18-
483PhosphorylationIITLKDVYDDGKYVY
EEEEEEECCCCCEEE
20.6018156174
488PhosphorylationDVYDDGKYVYVVTEL
EECCCCCEEEEEEEC
11.5318156174
493PhosphorylationGKYVYVVTELMKGGE
CCEEEEEEECHHCCH
17.2322817900
504UbiquitinationKGGELLDKILRQKFF
HCCHHHHHHHHHHCC
43.54-
509UbiquitinationLDKILRQKFFSEREA
HHHHHHHHCCCHHHH
41.78-
517PhosphorylationFFSEREASAVLFTIT
CCCHHHHHHHEEEHH
17.73-
529PhosphorylationTITKTVEYLHAQGVV
EHHHHHHHHHHCCCC
10.2318156174
541UbiquitinationGVVHRDLKPSNILYV
CCCCCCCCHHHEEEE
51.17-
541AcetylationGVVHRDLKPSNILYV
CCCCCCCCHHHEEEE
51.1726051181
556PhosphorylationDESGNPESIRICDFG
CCCCCCCCEEECCHH
20.5817192257
556O-linked_GlycosylationDESGNPESIRICDFG
CCCCCCCCEEECCHH
20.5829351928
566AcetylationICDFGFAKQLRAENG
ECCHHHHHHHHHHCC
47.8325953088
566UbiquitinationICDFGFAKQLRAENG
ECCHHHHHHHHHHCC
47.83-
577PhosphorylationAENGLLMTPCYTANF
HHCCCEECCCEECCC
15.3521945579
580PhosphorylationGLLMTPCYTANFVAP
CCEECCCEECCCCCH
15.3021945579
581PhosphorylationLLMTPCYTANFVAPE
CEECCCEECCCCCHH
23.1121945579
591UbiquitinationFVAPEVLKRQGYDAA
CCCHHHHHHCCCCHH
48.10-
591AcetylationFVAPEVLKRQGYDAA
CCCHHHHHHCCCCHH
48.1025953088
625PhosphorylationFANGPDDTPEEILAR
CCCCCCCCHHHHHHH
39.72-
641PhosphorylationGSGKFSLSGGYWNSV
CCCCEEECCCCCCCH
29.0421082442
644PhosphorylationKFSLSGGYWNSVSDT
CEEECCCCCCCHHHH
12.6318156174
651PhosphorylationYWNSVSDTAKDLVSK
CCCCHHHHHHHHHHH
28.2730576142
658UbiquitinationTAKDLVSKMLHVDPH
HHHHHHHHHCCCCHH
37.69-
688PhosphorylationHWDQLPQYQLNRQDA
CHHHCCHHCCCCCCC
17.0227642862
706PhosphorylationVKGAMAATYSALNRN
HHHHHHHHHHHHHCC
14.4221945579
707PhosphorylationKGAMAATYSALNRNQ
HHHHHHHHHHHHCCC
6.2921945579
708PhosphorylationGAMAATYSALNRNQS
HHHHHHHHHHHCCCC
23.1721945579
715PhosphorylationSALNRNQSPVLEPVG
HHHHCCCCCCCCCCC
22.1119664994
723MethylationPVLEPVGRSTLAQRR
CCCCCCCHHHHHHHH
27.0597804695
724PhosphorylationVLEPVGRSTLAQRRG
CCCCCCHHHHHHHHC
23.1128555341
725PhosphorylationLEPVGRSTLAQRRGI
CCCCCHHHHHHHHCC
25.4228555341
736PhosphorylationRRGIKKITSTAL---
HHCCCHHHHCCC---
28.9829978859
737PhosphorylationRGIKKITSTAL----
HCCCHHHHCCC----
18.3730576142
737O-linked_GlycosylationRGIKKITSTAL----
HCCCHHHHCCC----
18.3729351928
738PhosphorylationGIKKITSTAL-----
CCCHHHHCCC-----
24.2730576142

Upstream regulatory proteins (kinases for phosphorylation sites, E3 ubiquitin ligases of ubiquitination sites, ...)
Modified Location Modified Residue Modification Type of Upstream Proteins Gene Name of Upstream Proteins UniProt AC of Upstream Proteins Sources
227SPhosphorylationKinasePDPK1O15530
Uniprot
386SPhosphorylationKinaseMAPKAPK2P49137
Uniprot
386SPhosphorylationKinaseRPS6KA3P51812
GPS
470YPhosphorylationKinaseSRCP12931
PSP
470YPhosphorylationKinaseFYNP06241
PSP
483YPhosphorylationKinaseFYNP06241
PSP
483YPhosphorylationKinaseSRCP12931
PSP
488YPhosphorylationKinaseMAPK1P28482
GPS
488YPhosphorylationKinaseFGFR_GROUP-PhosphoELM
488YPhosphorylationKinaseFGFR-FAMILY-GPS
488YPhosphorylationKinaseSRCP12931
PSP
488YPhosphorylationKinaseFYNP06241
PSP
488YPhosphorylationKinaseFGFR3P22607
PSP
529YPhosphorylationKinaseMAPK1P28482
GPS
529YPhosphorylationKinaseSRCP12931
PSP
529YPhosphorylationKinaseFYNP06241
PSP
529YPhosphorylationKinaseFGFR3P22607
Uniprot
577TPhosphorylationKinaseMAPK3P27361
GPS
580YPhosphorylationKinaseFYNP06241
PSP
580YPhosphorylationKinaseSRCP12931
PSP
644YPhosphorylationKinaseFYNP06241
PSP
644YPhosphorylationKinaseSRCP12931
PSP
707YPhosphorylationKinaseFGFR1P11362
PhosphoELM
707YPhosphorylationKinaseSRCP12931
PSP
707YPhosphorylationKinaseFYNP06241
PSP

Functions of PTM Sites
Modified Location Modified Residue Modification Function Reference
227SPhosphorylation

-
365TPhosphorylation

18691976
369SPhosphorylation

18691976
386SPhosphorylation

18691976
386SPhosphorylation

18691976

Disease-associated PTM Sites based on SAP

* Distance = the distance between SAP position and PTM sites.

Modified Location Modification Variant Position
(Distance <= 10)
Residue Change SAP Related Disease Reference

Oops, there are no SNP-PTM records of KS6A3_HUMAN !!

Protein-Protein Interaction
Interacting Protein Gene Name Interaction Type PPI Reference Domain-Domain Interactions
PEA15_HUMANPEA15physical
12796492
CBP_HUMANCREBBPphysical
11564891
MK01_HUMANMAPK1physical
8939914
MK03_HUMANMAPK3physical
8939914
PDPK1_HUMANPDPK1physical
10856237
MK01_HUMANMAPK1physical
9915826
H2AX_HUMANH2AFXphysical
21224359
EIF3C_HUMANEIF3Cphysical
21900206
ATP5J_HUMANATP5Jphysical
21900206
BARX1_HUMANBARX1physical
21900206
MASP1_HUMANMASP1physical
21900206
SPSY_HUMANSMSphysical
21900206
ESR1_HUMANESR1physical
11432835
YBOX1_HUMANYBX1physical
19036157
IKBA_HUMANNFKBIAphysical
22685297
TRAF2_HUMANTRAF2physical
22685297
TAU_HUMANMAPTphysical
17512525
H31_HUMANHIST1H3Aphysical
10436156
HMGN1_HUMANHMGN1physical
11438671
FGFR1_HUMANFGFR1physical
24141780
DFFA_HUMANDFFAphysical
22863883
HSP7C_HUMANHSPA8physical
22863883
PNCB_HUMANNAPRTphysical
22863883
RASL1_HUMANRASAL1physical
22863883
NHRF1_HUMANSLC9A3R1physical
22863883
MK01_HUMANMAPK1physical
12016217
MK01_HUMANMAPK1physical
25241761
PDPK1_HUMANPDPK1physical
25241761

Drug and Disease Associations
Kegg Disease
There are no disease associations of PTM sites.
OMIM Disease
303600Coffin-Lowry syndrome (CLS)
300844Mental retardation, X-linked 19 (MRX19)
Kegg Drug
There are no disease associations of PTM sites.
DrugBank
DB00945Acetylsalicylic acid
Regulatory Network of KS6A3_HUMAN

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Related Literatures of Post-Translational Modification
Phosphorylation
ReferencePubMed
"Quantitative phosphoproteomic analysis of T cell receptor signalingreveals system-wide modulation of protein-protein interactions.";
Mayya V., Lundgren D.H., Hwang S.-I., Rezaul K., Wu L., Eng J.K.,Rodionov V., Han D.K.;
Sci. Signal. 2:RA46-RA46(2009).
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-415 AND SER-715, ANDMASS SPECTROMETRY.
"Large-scale proteomics analysis of the human kinome.";
Oppermann F.S., Gnad F., Olsen J.V., Hornberger R., Greff Z., Keri G.,Mann M., Daub H.;
Mol. Cell. Proteomics 8:1751-1764(2009).
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-17; SER-19; TYR-226;SER-227; THR-365; SER-369; SER-375; SER-386; THR-391; SER-415; SER-715AND SER-737, AND MASS SPECTROMETRY.
"A quantitative atlas of mitotic phosphorylation.";
Dephoure N., Zhou C., Villen J., Beausoleil S.A., Bakalarski C.E.,Elledge S.J., Gygi S.P.;
Proc. Natl. Acad. Sci. U.S.A. 105:10762-10767(2008).
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT THR-365; SER-369; SER-375AND SER-715, AND MASS SPECTROMETRY.
"Kinase-selective enrichment enables quantitative phosphoproteomics ofthe kinome across the cell cycle.";
Daub H., Olsen J.V., Bairlein M., Gnad F., Oppermann F.S., Korner R.,Greff Z., Keri G., Stemmann O., Mann M.;
Mol. Cell 31:438-448(2008).
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-227; THR-365; SER-369;SER-375; SER-386; SER-415; SER-556 AND SER-715, AND MASS SPECTROMETRY.
"Evaluation of the low-specificity protease elastase for large-scalephosphoproteome analysis.";
Wang B., Malik R., Nigg E.A., Korner R.;
Anal. Chem. 80:9526-9533(2008).
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-715, AND MASSSPECTROMETRY.
"Proteomics analysis of protein kinases by target class-selectiveprefractionation and tandem mass spectrometry.";
Wissing J., Jaensch L., Nimtz M., Dieterich G., Hornberger R.,Keri G., Wehland J., Daub H.;
Mol. Cell. Proteomics 6:537-547(2007).
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-227; THR-231; THR-365;SER-369 AND SER-715, AND MASS SPECTROMETRY.
"Improved titanium dioxide enrichment of phosphopeptides from HeLacells and high confident phosphopeptide identification by cross-validation of MS/MS and MS/MS/MS spectra.";
Yu L.-R., Zhu Z., Chan K.C., Issaq H.J., Dimitrov D.S., Veenstra T.D.;
J. Proteome Res. 6:4150-4162(2007).
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-715, AND MASSSPECTROMETRY.
"A probability-based approach for high-throughput proteinphosphorylation analysis and site localization.";
Beausoleil S.A., Villen J., Gerber S.A., Rush J., Gygi S.P.;
Nat. Biotechnol. 24:1285-1292(2006).
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-715, AND MASSSPECTROMETRY.
"Global, in vivo, and site-specific phosphorylation dynamics insignaling networks.";
Olsen J.V., Blagoev B., Gnad F., Macek B., Kumar C., Mortensen P.,Mann M.;
Cell 127:635-648(2006).
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT THR-365 AND SER-369, ANDMASS SPECTROMETRY.

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