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UniProtKB - Q8IW41 (MAPK5_HUMAN)

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Protein

MAP kinase-activated protein kinase 5

Gene

MAPKAPK5

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Tumor suppressor serine/threonine-protein kinase involved in mTORC1 signaling and post-transcriptional regulation. Phosphorylates FOXO3, ERK3/MAPK6, ERK4/MAPK4, HSP27/HSPB1, p53/TP53 and RHEB. Acts as a tumor suppressor by mediating Ras-induced senescence and phosphorylating p53/TP53. Involved in post-transcriptional regulation of MYC by mediating phosphorylation of FOXO3: phosphorylation of FOXO3 leads to promote nuclear localization of FOXO3, enabling expression of miR-34b and miR-34c, 2 post-transcriptional regulators of MYC that bind to the 3'UTR of MYC transcript and prevent MYC translation. Acts as a negative regulator of mTORC1 signaling by mediating phosphorylation and inhibition of RHEB. Part of the atypical MAPK signaling via its interaction with ERK3/MAPK6 or ERK4/MAPK4: the precise role of the complex formed with ERK3/MAPK6 or ERK4/MAPK4 is still unclear, but the complex follows a complex set of phosphorylation events: upon interaction with atypical MAPK (ERK3/MAPK6 or ERK4/MAPK4), ERK3/MAPK6 (or ERK4/MAPK4) is phosphorylated and then mediates phosphorylation and activation of MAPKAPK5, which in turn phosphorylates ERK3/MAPK6 (or ERK4/MAPK4). Mediates phosphorylation of HSP27/HSPB1 in response to PKA/PRKACA stimulation, inducing F-actin rearrangement.5 Publications

Caution

The role of p38 MAPK kinases is unclear in phosphorylation and activation of MAPKAPK5. According to some reports, it interacts and is phosphorylated by p38-alpha/MAPK14 and p38-beta/MAPK11 (PubMed:9628874 and PubMed:12808055). According to other reports, it is not activated by p38-alpha/MAPK14 and p38-beta/MAPK11. An explanation for these discrepancies, might be that the interaction with p38 MAPK kinases is weak and occurs only under specific conditions.Curated

Catalytic activityi

ATP + a protein = ADP + a phosphoprotein.

Enzyme regulationi

Activated following phosphorylation at Thr-182 by p38-alpha/MAPK14, p38-beta/MAPK11, ERK2/MAPK1, ERK3/MAPK6, and ERK4/MAPK4. Activated by stress-related extracellular stimuli; such as H2O2, arsenite, anisomycin TNF alpha and also PMA and the calcium ionophore A23187; but to a lesser extent. In vitro, activated by SQSTM1. Inhibited by diterpenoid alkaloid noroxoaconitine.2 Publications

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei51ATPPROSITE-ProRule annotation1
Active sitei148Proton acceptorPROSITE-ProRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi28 – 36ATPPROSITE-ProRule annotation9

GO - Molecular functioni

View the complete GO annotation on QuickGO ...

GO - Biological processi

  • cell surface receptor signaling pathway Source: GO_Central
  • negative regulation of TOR signaling Source: UniProtKB
  • peptidyl-serine phosphorylation Source: GO_Central
  • positive regulation of telomerase activity Source: BHF-UCL
  • positive regulation of telomere capping Source: BHF-UCL
  • positive regulation of telomere maintenance via telomerase Source: BHF-UCL
  • protein autophosphorylation Source: UniProtKB
  • Ras protein signal transduction Source: UniProtKB
  • regulation of signal transduction by p53 class mediator Source: Reactome
  • regulation of translation Source: UniProtKB
  • signal transduction Source: ProtInc
  • stress-induced premature senescence Source: UniProtKB
View the complete GO annotation on QuickGO ...

Keywordsi

Molecular functionKinase, Serine/threonine-protein kinase, Transferase
LigandATP-binding, Nucleotide-binding

Enzyme and pathway databases

ReactomeiR-HSA-2559580 Oxidative Stress Induced Senescence
R-HSA-5687128 MAPK6/MAPK4 signaling
R-HSA-6804756 Regulation of TP53 Activity through Phosphorylation
SignaLinkiQ8IW41
SIGNORiQ8IW41

Names & Taxonomyi

Protein namesi
Recommended name:
MAP kinase-activated protein kinase 5 (EC:2.7.11.1)
Short name:
MAPK-activated protein kinase 5
Short name:
MAPKAP kinase 5
Short name:
MAPKAP-K5
Short name:
MAPKAPK-5
Short name:
MK-5
Short name:
MK5
Alternative name(s):
p38-regulated/activated protein kinase
Short name:
PRAK
Gene namesi
Name:MAPKAPK5
Synonyms:PRAK
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo
Proteomesi
  • UP000005640 Componenti: Chromosome 12

Organism-specific databases

EuPathDBiHostDB:ENSG00000089022.13
HGNCiHGNC:6889 MAPKAPK5
MIMi606723 gene
neXtProtiNX_Q8IW41

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Cytoplasm, Nucleus

Pathology & Biotechi

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Mutagenesisi51K → M: Kinase defective mutant, abolishes activity. 1 Publication1
Mutagenesisi182T → A: No p38-beta/MAPK11-induced activation. 3 Publications1
Mutagenesisi182T → D: Mimicks phosphorylation state and induces constitutive protein kinase activity. 3 Publications1
Mutagenesisi212S → D: Mimicks phosphorylation state and displays a slightly higher protein kinase activity. 1 Publication1
Mutagenesisi337L → G: Induces constitutive protein kinase activity. 1 Publication1

Keywords - Diseasei

Tumor suppressor

Organism-specific databases

DisGeNETi8550
OpenTargetsiENSG00000089022
PharmGKBiPA30633

Chemistry databases

ChEMBLiCHEMBL3094
GuidetoPHARMACOLOGYi2096

Polymorphism and mutation databases

DMDMi52000829

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000862961 – 473MAP kinase-activated protein kinase 5Add BLAST473

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei115Phosphoserine; by PKABy similarity1
Modified residuei182Phosphothreonine; by MAPK11, MAPK14, MAPK4, MAPK6 and PKACombined sources1 Publication1
Modified residuei212Phosphoserine1 Publication1
Modified residuei354PhosphoserineCombined sources1

Post-translational modificationi

Phosphorylated on Thr-182 ERK3/MAPK6 or ERK4/MAPK4; which is the regulatory phosphorylation site and is located on the T-loop/loop 12, leading to activation. Phosphorylation at Thr-182 by p38-alpha/MAPK14, p38-beta/MAPK11 is subject to debate. Phosphorylated at Ser-115 by PKA/PRKACA, leading to localization to the cytoplasm. Autophosphorylated (By similarity).By similarity

Keywords - PTMi

Phosphoprotein

Proteomic databases

EPDiQ8IW41
MaxQBiQ8IW41
PaxDbiQ8IW41
PeptideAtlasiQ8IW41
PRIDEiQ8IW41
ProteomicsDBi70805
70806 [Q8IW41-2]

PTM databases

iPTMnetiQ8IW41
PhosphoSitePlusiQ8IW41

Expressioni

Tissue specificityi

Expressed ubiquitously.1 Publication

Inductioni

Directly regulated by MYC: expression is activated by MYC, suggesting the existence of a feedback regulatory loop.1 Publication

Gene expression databases

BgeeiENSG00000089022
CleanExiHS_MAPKAPK5
ExpressionAtlasiQ8IW41 baseline and differential
GenevisibleiQ8IW41 HS

Organism-specific databases

HPAiCAB004546
HPA015515

Interactioni

Subunit structurei

Interacts with ERK3/MAPK6 and ERK4/MAPK4 (via FRIEDE motif); the interaction is direct (By similarity). Interacts with YWHAE; the interaction prevents phosphorylation of HSP27/HSPB1 leading to disrupt F-actin polymerization. Interacts with SQSTM1.By similarity2 Publications

Binary interactionsi

Show more details

GO - Molecular functioni

  • calmodulin binding Source: GO_Central
  • mitogen-activated protein kinase binding Source: GO_Central
  • p53 binding Source: UniProtKB
View the complete GO annotation on QuickGO ...

Protein-protein interaction databases

BioGridi114120, 21 interactors
IntActiQ8IW41, 19 interactors
MINTiQ8IW41
STRINGi9606.ENSP00000202788

Chemistry databases

BindingDBiQ8IW41

Structurei

3D structure databases

ProteinModelPortaliQ8IW41
SMRiQ8IW41
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini22 – 304Protein kinasePROSITE-ProRule annotationAdd BLAST283

Coiled coil

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Coiled coili409 – 440Sequence analysisAdd BLAST32

Sequence similaritiesi

Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family.Curated

Keywords - Domaini

Coiled coil

Phylogenomic databases

eggNOGiKOG0604 Eukaryota
ENOG410XP8F LUCA
GeneTreeiENSGT00900000140876
HOGENOMiHOG000233031
HOVERGENiHBG106948
InParanoidiQ8IW41
KOiK04442
OMAiIHDRENG
OrthoDBiEOG091G14PL
PhylomeDBiQ8IW41
TreeFamiTF312891

Family and domain databases

InterProiView protein in InterPro
IPR011009 Kinase-like_dom_sf
IPR000719 Prot_kinase_dom
IPR008271 Ser/Thr_kinase_AS
PfamiView protein in Pfam
PF00069 Pkinase, 1 hit
SMARTiView protein in SMART
SM00220 S_TKc, 1 hit
SUPFAMiSSF56112 SSF56112, 1 hit
PROSITEiView protein in PROSITE
PS50011 PROTEIN_KINASE_DOM, 1 hit
PS00108 PROTEIN_KINASE_ST, 1 hit

Sequences (2)i

Sequence statusi: Complete.

This entry describes 2 isoformsi produced by alternative splicing. AlignAdd to basket

Isoform 1 (identifier: Q8IW41-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

        10         20         30         40         50
MSEESDMDKA IKETSILEEY SINWTQKLGA GISGPVRVCV KKSTQERFAL 
        60         70         80         90        100
KILLDRPKAR NEVRLHMMCA THPNIVQIIE VFANSVQFPH ESSPRARLLI 
       110        120        130        140        150
VMEMMEGGEL FHRISQHRHF TEKQASQVTK QIALALRHCH LLNIAHRDLK 
       160        170        180        190        200
PENLLFKDNS LDAPVKLCDF GFAKIDQGDL MTPQFTPYYV APQVLEAQRR 
       210        220        230        240        250
HQKEKSGIIP TSPTPYTYNK SCDLWSLGVI IYVMLCGYPP FYSKHHSRTI 
       260        270        280        290        300
PKDMRRKIMT GSFEFPEEEW SQISEMAKDV VRKLLKVKPE ERLTIEGVLD 
       310        320        330        340        350
HPWLNSTEAL DNVLPSAQLM MDKAVVAGIQ QAHAEQLANM RIQDLKVSLK 
       360        370        380        390        400
PLHSVNNPIL RKRKLLGTKP KDSVYIHDHE NGAEDSNVAL EKLRDVIAQC 
       410        420        430        440        450
ILPQAGKGEN EDEKLNEVMQ EAWKYNRECK LLRDTLQSFS WNGRGFTDKV 
       460        470 
DRLKLAEIVK QVIEEQTTSH ESQ
Note: No experimental confirmation available.
Length:473
Mass (Da):54,220
Last modified:September 13, 2004 - v2
Checksum:iF3D9DDC83CC0C49D
GO
Isoform 2 (identifier: Q8IW41-2) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     407-408: Missing.

Show »
Length:471
Mass (Da):54,035
Checksum:i176FA041A7F28570
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti273I → T in CAB53747 (PubMed:17974005).Curated1
Sequence conflicti291E → R in AAC39863 (PubMed:9628874).Curated1

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Natural variantiVAR_04075867M → I1 PublicationCorresponds to variant dbSNP:rs34132040Ensembl.1
Natural variantiVAR_040759282R → K1 PublicationCorresponds to variant dbSNP:rs34843470Ensembl.1

Alternative sequence

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Alternative sequenceiVSP_011597407 – 408Missing in isoform 2. 3 Publications2

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF032437 Genomic DNA Translation: AAC39863.1
AK122767 mRNA Translation: BAG53717.1
CH471054 Genomic DNA Translation: EAW97981.1
BC000833 mRNA Translation: AAH00833.1
BC041049 mRNA Translation: AAH41049.1
BC047284 mRNA Translation: AAH47284.2
AL110301 mRNA Translation: CAB53747.1
CCDSiCCDS44975.1 [Q8IW41-1]
CCDS44976.1 [Q8IW41-2]
PIRiT34519
RefSeqiNP_003659.2, NM_003668.3 [Q8IW41-2]
NP_620777.1, NM_139078.2 [Q8IW41-1]
UniGeneiHs.333120
Hs.413901

Genome annotation databases

EnsembliENST00000550735; ENSP00000449667; ENSG00000089022 [Q8IW41-2]
ENST00000551404; ENSP00000449381; ENSG00000089022 [Q8IW41-1]
GeneIDi8550
KEGGihsa:8550
UCSCiuc001tta.5 human [Q8IW41-1]

Keywords - Coding sequence diversityi

Alternative splicing, Polymorphism

Similar proteinsi

Entry informationi

Entry nameiMAPK5_HUMAN
AccessioniPrimary (citable) accession number: Q8IW41
Secondary accession number(s): B3KVA5
, O60491, Q86X46, Q9BVX9, Q9UG86
Entry historyiIntegrated into UniProtKB/Swiss-Prot: September 13, 2004
Last sequence update: September 13, 2004
Last modified: June 20, 2018
This is version 157 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Human chromosome 12
    Human chromosome 12: entries, gene names and cross-references to MIM
  2. Human entries with polymorphisms or disease mutations
    List of human entries with polymorphisms or disease mutations
  3. Human polymorphisms and disease mutations
    Index of human polymorphisms and disease mutations
  4. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  5. Human and mouse protein kinases
    Human and mouse protein kinases: classification and index
  6. SIMILARITY comments
    Index of protein domains and families

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