STK4_HUMAN - dbPTM
STK4_HUMAN - PTM Information in dbPTM
Basic Information of Protein
UniProt ID STK4_HUMAN
UniProt AC Q13043
Protein Name Serine/threonine-protein kinase 4
Gene Name STK4
Organism Homo sapiens (Human).
Sequence Length 487
Subcellular Localization Cytoplasm. Nucleus. The caspase-cleaved form cycles between the nucleus and cytoplasm.
Protein Description Stress-activated, pro-apoptotic kinase which, following caspase-cleavage, enters the nucleus and induces chromatin condensation followed by internucleosomal DNA fragmentation. Key component of the Hippo signaling pathway which plays a pivotal role in organ size control and tumor suppression by restricting proliferation and promoting apoptosis. The core of this pathway is composed of a kinase cascade wherein STK3/MST2 and STK4/MST1, in complex with its regulatory protein SAV1, phosphorylates and activates LATS1/2 in complex with its regulatory protein MOB1, which in turn phosphorylates and inactivates YAP1 oncoprotein and WWTR1/TAZ. Phosphorylation of YAP1 by LATS2 inhibits its translocation into the nucleus to regulate cellular genes important for cell proliferation, cell death, and cell migration. STK3/MST2 and STK4/MST1 are required to repress proliferation of mature hepatocytes, to prevent activation of facultative adult liver stem cells (oval cells), and to inhibit tumor formation (By similarity). Phosphorylates 'Ser-14' of histone H2B (H2BS14ph) during apoptosis. Phosphorylates FOXO3 upon oxidative stress, which results in its nuclear translocation and cell death initiation. Phosphorylates MOBKL1A, MOBKL1B and RASSF2. Phosphorylates TNNI3 (cardiac Tn-I) and alters its binding affinity to TNNC1 (cardiac Tn-C) and TNNT2 (cardiac Tn-T). Phosphorylates FOXO1 on 'Ser-212' and regulates its activation and stimulates transcription of PMAIP1 in a FOXO1-dependent manner. Phosphorylates SIRT1 and inhibits SIRT1-mediated p53/TP53 deacetylation, thereby promoting p53/TP53 dependent transcription and apoptosis upon DNA damage. Acts as an inhibitor of PKB/AKT1. Phosphorylates AR on 'Ser-650' and suppresses its activity by intersecting with PKB/AKT1 signaling and antagonizing formation of AR-chromatin complexes..
Protein Sequence METVQLRNPPRRQLKKLDEDSLTKQPEEVFDVLEKLGEGSYGSVYKAIHKETGQIVAIKQVPVESDLQEIIKEISIMQQCDSPHVVKYYGSYFKNTDLWIVMEYCGAGSVSDIIRLRNKTLTEDEIATILQSTLKGLEYLHFMRKIHRDIKAGNILLNTEGHAKLADFGVAGQLTDTMAKRNTVIGTPFWMAPEVIQEIGYNCVADIWSLGITAIEMAEGKPPYADIHPMRAIFMIPTNPPPTFRKPELWSDNFTDFVKQCLVKSPEQRATATQLLQHPFVRSAKGVSILRDLINEAMDVKLKRQESQQREVDQDDEENSEEDEMDSGTMVRAVGDEMGTVRVASTMTDGANTMIEHDDTLPSQLGTMVINAEDEEEEGTMKRRDETMQPAKPSFLEYFEQKEKENQINSFGKSVPGPLKNSSDWKIPQDGDYEFLKSWTVEDLQKRLLALDPMMEQEIEEIRQKYQSKRQPILDAIEAKKRRQQNF
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
1Acetylation-------METVQLRN
-------CCCCCCCC
9.8219369195
3Phosphorylation-----METVQLRNPP
-----CCCCCCCCCC
16.5627174698
21PhosphorylationLKKLDEDSLTKQPEE
HHCCCCCCCCCCHHH
35.5727067055
23PhosphorylationKLDEDSLTKQPEEVF
CCCCCCCCCCHHHHH
31.4220873877
24UbiquitinationLDEDSLTKQPEEVFD
CCCCCCCCCHHHHHH
69.9729967540
35UbiquitinationEVFDVLEKLGEGSYG
HHHHHHHHHCCCCCH
58.6029967540
35AcetylationEVFDVLEKLGEGSYG
HHHHHHHHHCCCCCH
58.607695199
40PhosphorylationLEKLGEGSYGSVYKA
HHHHCCCCCHHHHHH
23.2422322096
41PhosphorylationEKLGEGSYGSVYKAI
HHHCCCCCHHHHHHH
25.0322322096
43PhosphorylationLGEGSYGSVYKAIHK
HCCCCCHHHHHHHHC
17.6528152594
43UbiquitinationLGEGSYGSVYKAIHK
HCCCCCHHHHHHHHC
17.6522817900
45PhosphorylationEGSYGSVYKAIHKET
CCCCHHHHHHHHCCC
9.0828152594
46UbiquitinationGSYGSVYKAIHKETG
CCCHHHHHHHHCCCC
38.4129967540
50UbiquitinationSVYKAIHKETGQIVA
HHHHHHHCCCCCEEE
51.3529967540
52PhosphorylationYKAIHKETGQIVAIK
HHHHHCCCCCEEEEE
38.9124114839
59MethylationTGQIVAIKQVPVESD
CCCEEEEEEECCCCC
35.19126257615
59UbiquitinationTGQIVAIKQVPVESD
CCCEEEEEEECCCCC
35.1929967540
72UbiquitinationSDLQEIIKEISIMQQ
CCHHHHHHHHHHHHH
55.4429967540
82PhosphorylationSIMQQCDSPHVVKYY
HHHHHCCCCHHHHCC
25.2420028971
90UbiquitinationPHVVKYYGSYFKNTD
CHHHHCCCCCCCCCC
16.8722817900
104UbiquitinationDLWIVMEYCGAGSVS
CEEEEEECCCCCCHH
4.3222053931
106UbiquitinationWIVMEYCGAGSVSDI
EEEEECCCCCCHHHH
31.8822817900
119UbiquitinationDIIRLRNKTLTEDEI
HHHHHHCCCCCHHHH
38.1821906983
119 (in isoform 1)Ubiquitination-38.1821906983
119 (in isoform 2)Ubiquitination-38.1821906983
120PhosphorylationIIRLRNKTLTEDEIA
HHHHHCCCCCHHHHH
42.3220873877
122PhosphorylationRLRNKTLTEDEIATI
HHHCCCCCHHHHHHH
46.7727067055
128PhosphorylationLTEDEIATILQSTLK
CCHHHHHHHHHHHHH
28.0727067055
132PhosphorylationEIATILQSTLKGLEY
HHHHHHHHHHHHHHH
32.0620873877
133PhosphorylationIATILQSTLKGLEYL
HHHHHHHHHHHHHHH
21.3820873877
135UbiquitinationTILQSTLKGLEYLHF
HHHHHHHHHHHHHHH
62.6322817900
139PhosphorylationSTLKGLEYLHFMRKI
HHHHHHHHHHHHHHH
15.5427067055
151 (in isoform 2)Ubiquitination-55.3121906983
151UbiquitinationRKIHRDIKAGNILLN
HHHHCCHHHCCEEEC
55.3121906983
151 (in isoform 1)Ubiquitination-55.3121906983
164UbiquitinationLNTEGHAKLADFGVA
ECCCCCHHHHHCCCC
38.23-
167UbiquitinationEGHAKLADFGVAGQL
CCCHHHHHCCCCCHH
51.7922053931
175PhosphorylationFGVAGQLTDTMAKRN
CCCCCHHHHHHHHHC
22.8729255136
177PhosphorylationVAGQLTDTMAKRNTV
CCCHHHHHHHHHCCC
17.5029255136
178SulfoxidationAGQLTDTMAKRNTVI
CCHHHHHHHHHCCCC
4.6321406390
180UbiquitinationQLTDTMAKRNTVIGT
HHHHHHHHHCCCCCC
35.0522053931
180 (in isoform 1)Ubiquitination-35.0521906983
180 (in isoform 2)Ubiquitination-35.0521906983
183PhosphorylationDTMAKRNTVIGTPFW
HHHHHHCCCCCCCCC
19.9618328708
187PhosphorylationKRNTVIGTPFWMAPE
HHCCCCCCCCCCCHH
12.2812223493
196UbiquitinationFWMAPEVIQEIGYNC
CCCCHHHHHHHCCCH
2.6522053931
235SulfoxidationHPMRAIFMIPTNPPP
CCCEEEEEEECCCCC
2.6821406390
238PhosphorylationRAIFMIPTNPPPTFR
EEEEEEECCCCCCCC
49.8120068231
243PhosphorylationIPTNPPPTFRKPELW
EECCCCCCCCCHHHC
41.6720068231
246UbiquitinationNPPPTFRKPELWSDN
CCCCCCCCHHHCCCC
38.36-
264UbiquitinationFVKQCLVKSPEQRAT
HHHHHHCCCHHHHHH
47.5529967540
265PhosphorylationVKQCLVKSPEQRATA
HHHHHCCCHHHHHHH
26.6217192257
285UbiquitinationHPFVRSAKGVSILRD
CHHHHCCHHHHHHHH
62.1829967540
288PhosphorylationVRSAKGVSILRDLIN
HHCCHHHHHHHHHHH
25.2724719451
298SulfoxidationRDLINEAMDVKLKRQ
HHHHHHHHHHHHHHH
5.0621406390
301UbiquitinationINEAMDVKLKRQESQ
HHHHHHHHHHHHHHH
43.99-
303UbiquitinationEAMDVKLKRQESQQR
HHHHHHHHHHHHHHC
46.44-
307PhosphorylationVKLKRQESQQREVDQ
HHHHHHHHHHCCCCC
24.2328450419
320PhosphorylationDQDDEENSEEDEMDS
CCCCHHCCHHHHHCC
45.7223927012
327PhosphorylationSEEDEMDSGTMVRAV
CHHHHHCCCCEEEEC
34.5523927012
329PhosphorylationEDEMDSGTMVRAVGD
HHHHCCCCEEEECCC
19.2223927012
338SulfoxidationVRAVGDEMGTVRVAS
EEECCCCCCCEEEEE
6.9321406390
340PhosphorylationAVGDEMGTVRVASTM
ECCCCCCCEEEEEEE
12.1123401153
353PhosphorylationTMTDGANTMIEHDDT
EECCCCCCEEECCCC
20.9927251275
360PhosphorylationTMIEHDDTLPSQLGT
CEEECCCCCCHHCCE
46.7722817900
363PhosphorylationEHDDTLPSQLGTMVI
ECCCCCCHHCCEEEE
40.9419369195
367PhosphorylationTLPSQLGTMVINAED
CCCHHCCEEEEECCC
19.5022817900
380PhosphorylationEDEEEEGTMKRRDET
CCCCCCCCCCCCHHH
23.8530576142
387PhosphorylationTMKRRDETMQPAKPS
CCCCCHHHCCCCCHH
25.9528674151
389UbiquitinationKRRDETMQPAKPSFL
CCCHHHCCCCCHHHH
42.0724816145
394PhosphorylationTMQPAKPSFLEYFEQ
HCCCCCHHHHHHHHH
41.5825159151
398PhosphorylationAKPSFLEYFEQKEKE
CCHHHHHHHHHHHHH
17.9828796482
404UbiquitinationEYFEQKEKENQINSF
HHHHHHHHHHCCCCC
69.8424816145
410PhosphorylationEKENQINSFGKSVPG
HHHHCCCCCCCCCCC
36.6830266825
413UbiquitinationNQINSFGKSVPGPLK
HCCCCCCCCCCCCCC
46.3929967540
414PhosphorylationQINSFGKSVPGPLKN
CCCCCCCCCCCCCCC
33.6423401153
420UbiquitinationKSVPGPLKNSSDWKI
CCCCCCCCCCCCCCC
58.9029967540
422PhosphorylationVPGPLKNSSDWKIPQ
CCCCCCCCCCCCCCC
28.2529978859
423PhosphorylationPGPLKNSSDWKIPQD
CCCCCCCCCCCCCCC
57.8129978859
426UbiquitinationLKNSSDWKIPQDGDY
CCCCCCCCCCCCCCC
49.8829967540
433PhosphorylationKIPQDGDYEFLKSWT
CCCCCCCCHHHHHCC
17.7025159151
436UbiquitinationQDGDYEFLKSWTVED
CCCCCHHHHHCCHHH
2.6124816145
437UbiquitinationDGDYEFLKSWTVEDL
CCCCHHHHHCCHHHH
49.6329967540
438PhosphorylationGDYEFLKSWTVEDLQ
CCCHHHHHCCHHHHH
30.0825159151
440PhosphorylationYEFLKSWTVEDLQKR
CHHHHHCCHHHHHHH
22.5528796482
446UbiquitinationWTVEDLQKRLLALDP
CCHHHHHHHHHHHCH
52.9229967540
451UbiquitinationLQKRLLALDPMMEQE
HHHHHHHHCHHHHHH
8.4024816145
452UbiquitinationQKRLLALDPMMEQEI
HHHHHHHCHHHHHHH
24.3624816145
465UbiquitinationEIEEIRQKYQSKRQP
HHHHHHHHHHHCCCH
35.0924816145
467UbiquitinationEEIRQKYQSKRQPIL
HHHHHHHHHCCCHHH
49.8924816145
480UbiquitinationILDAIEAKKRRQQNF
HHHHHHHHHHHHHCC
33.7424816145
481UbiquitinationLDAIEAKKRRQQNF-
HHHHHHHHHHHHCC-
60.9224816145
496Ubiquitination----------------
----------------
24816145

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
82SPhosphorylationKinaseMAPK8P45983
GPS
120TPhosphorylationKinaseAKT1P31749
PSP
183TPhosphorylationKinaseAKT1P31749
PSP
183TPhosphorylationKinaseSTK4Q13043
PhosphoELM
340TPhosphorylationKinaseCHEK1O14757
GPS
353TPhosphorylationKinaseSTK4Q13043
GPS
367TPhosphorylationKinaseSTK4Q13043
GPS
387TPhosphorylationKinaseAKT1P31749
Uniprot
433YPhosphorylationKinaseABL1P00519
GPS
433YPhosphorylationKinaseFGFR4P22455
PSP
-KUbiquitinationE3 ubiquitin ligaseSTUB1Q9UNE7
PMID:18381433

Functions of PTM Sites
Modified Location Modified Residue Modification Function Reference
183TPhosphorylation

15109305
387TPhosphorylation

17726016

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 STK4_HUMAN !!

Protein-Protein Interaction
Interacting Protein Gene Name Interaction Type PPI Reference Domain-Domain Interactions
STK4_HUMANSTK4physical
8702870
H2B2E_HUMANHIST2H2BEphysical
12757711
RASF2_HUMANRASSF2physical
20562859
RASF4_HUMANRASSF4physical
20562859
STK3_HUMANSTK3physical
20562859
SAV1_HUMANSAV1physical
20562859
MAP1B_HUMANMAP1Bphysical
20562859
RASF5_HUMANRASSF5physical
20562859
RASF1_HUMANRASSF1physical
20562859
TAOK1_HUMANTAOK1physical
20562859
SIR1_HUMANSIRT1physical
21212262
ABL1_HUMANABL1physical
21715626
FOXO3_HUMANFOXO3physical
21715626
H2AX_HUMANH2AFXphysical
20921231
AKT1_HUMANAKT1physical
19940129
H2B2E_HUMANHIST2H2BEphysical
19940129
STK4_HUMANSTK4physical
22863277
SMS1_HUMANSGMS1physical
22863277
AKT1_HUMANAKT1physical
17932490
RASF3_HUMANRASSF3physical
24255178
AURKB_HUMANAURKBphysical
24255178
STRP1_HUMANSTRIP1physical
24255178
FGOP2_HUMANFGFR1OP2physical
24255178
KIF2A_HUMANKIF2Aphysical
24255178
KIF2C_HUMANKIF2Cphysical
24255178
MAP1S_HUMANMAP1Sphysical
24255178
MOB1A_HUMANMOB1Aphysical
24255178
PHOCN_HUMANMOB4physical
24255178
P52K_HUMANPRKRIRphysical
24255178
RAB8A_HUMANRAB8Aphysical
24255178
RASF1_HUMANRASSF1physical
24255178
RASF2_HUMANRASSF2physical
24255178
RASF5_HUMANRASSF5physical
24255178
SAV1_HUMANSAV1physical
24255178
SHLB2_HUMANSH3GLB2physical
24255178
SLMAP_HUMANSLMAPphysical
24255178
SNX5_HUMANSNX5physical
24255178
STK3_HUMANSTK3physical
24255178
STRN_HUMANSTRNphysical
24255178
STRN3_HUMANSTRN3physical
24255178
STRN4_HUMANSTRN4physical
24255178
MAP1B_HUMANMAP1Bphysical
23455922
RASF2_HUMANRASSF2physical
23455922
CDK3_HUMANCDK3physical
23455922
STK3_HUMANSTK3physical
23455922
MAP1S_HUMANMAP1Sphysical
23455922
RASF3_HUMANRASSF3physical
23455922
RB6I2_HUMANERC1physical
23455922
RASF5_HUMANRASSF5physical
23455922
RASF4_HUMANRASSF4physical
23455922
SAV1_HUMANSAV1physical
23455922
RASF1_HUMANRASSF1physical
23455922
ANXA1_HUMANANXA1physical
24366813
CDC37_HUMANCDC37physical
24366813
MAP1B_HUMANMAP1Bphysical
24366813
MAP1S_HUMANMAP1Sphysical
24366813
STK3_HUMANSTK3physical
24366813
RASF1_HUMANRASSF1physical
24366813
RASF2_HUMANRASSF2physical
24366813
RASF3_HUMANRASSF3physical
24366813
RASF4_HUMANRASSF4physical
24366813
RASF5_HUMANRASSF5physical
24366813
RASF6_HUMANRASSF6physical
24366813
SAV1_HUMANSAV1physical
24366813
SLMAP_HUMANSLMAPphysical
24366813
STRN_HUMANSTRNphysical
24366813
VAPA_HUMANVAPAphysical
24366813
XPO6_HUMANXPO6physical
24366813
STK3_HUMANSTK3physical
26344197
STK4_HUMANSTK4physical
21572393
DAXX_HUMANDAXXphysical
21572393
H2B2E_HUMANHIST2H2BEphysical
21572393
RASF1_HUMANRASSF1physical
26578655
STK4_HUMANSTK4physical
26578655
LATS2_HUMANLATS2physical
26898830
DYRK2_HUMANDYRK2physical
27173435
SAV1_HUMANSAV1physical
27173435
KIF3C_HUMANKIF3Cphysical
27173435
KIF3B_HUMANKIF3Bphysical
27173435

Drug and Disease Associations
Kegg Disease
There are no disease associations of PTM sites.
OMIM Disease
614868T-cell immunodeficiency, recurrent infections, and autoimmunity with or without cardiac malformations (TIIAC)
Kegg Drug
There are no disease associations of PTM sites.
DrugBank
There are no disease associations of PTM sites.
Regulatory Network of STK4_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-320, AND MASSSPECTROMETRY.
"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 THR-3; SER-40; TYR-41;THR-175; THR-177; SER-320; SER-327; THR-329; THR-340; THR-353;THR-360; THR-367; THR-380; THR-387; SER-394; SER-410; SER-414; SER-422AND SER-438, 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 SER-320, AND MASSSPECTROMETRY.
"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-265; SER-320; THR-340;SER-410 AND SER-438, AND MASS SPECTROMETRY.
"Phosphoinositide 3-kinase/Akt inhibits MST1-mediated pro-apoptoticsignaling through phosphorylation of threonine 120.";
Yuan Z., Kim D., Shu S., Wu J., Guo J., Xiao L., Kaneko S.,Coppola D., Cheng J.Q.;
J. Biol. Chem. 285:3815-3824(2010).
Cited for: PHOSPHORYLATION AT THR-120.
"Akt phosphorylates MstI and prevents its proteolytic activation,blocking FOXO3 phosphorylation and nuclear translocation.";
Jang S.W., Yang S.J., Srinivasan S., Ye K.;
J. Biol. Chem. 282:30836-30844(2007).
Cited for: PHOSPHORYLATION AT THR-387, AND INTERACTION WITH PKB/AKT1.
"Regulation of the MST1 kinase by autophosphorylation, by the growthinhibitory proteins, RASSF1 and NORE1, and by Ras.";
Praskova M., Khoklatchev A., Ortiz-Vega S., Avruch J.;
Biochem. J. 381:453-462(2004).
Cited for: FUNCTION, ENZYME REGULATION, HOMODIMERIZATION, PHOSPHORYLATION ATTHR-183, MUTAGENESIS OF LYS-59; THR-175; THR-177; THR-183 AND LEU-444,AND INTERACTION WITH RASSF1 AND NORE1.
"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 TYR-433, AND MASSSPECTROMETRY.

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