Summary for PAK4 (NES ID: 234)

Full Name
Serine/threonine-protein kinase PAK 4     UniProt    
Alternative Names
p21-activated kinase 4   
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1Nucleo-cytoplasmic shuttling of PAK4 modulates ?-catenin intracellular translocation and signaling., Li et al., Biochim Biophys Acta, 2012
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L85A, F89A, M92A, V94A Ref.1Nucleo-cytoplasmic shuttling of PAK4 modulates ?-catenin intracellular translocation and signaling., Li et al., Biochim Biophys Acta, 2012
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
82LTLLLDEFENMSV94, 393VVMEFLEGGALTDIV407, 545LKGFLDRLLV554 Ref.1Nucleo-cytoplasmic shuttling of PAK4 modulates ?-catenin intracellular translocation and signaling., Li et al., Biochim Biophys Acta, 2012
Secondary Structure of Export Signal
NES2: β-strand followed by loop, then α-helix
NES3: α-helix followed by loop
Other Residues Important for Export
Unknown
Sequence
Show FASTA Format Show Domain Info by CDD Show Secondary Structure by PSIPRED Show Conservation Score by AL2CO 
        10         20         30         40         50         60 
MFGKRKKRVE ISAPSNFEHR VHTGFDQHEQ KFTGLPRQWQ SLIEESARRP KPLVDPACIT 

        70         80         90        100        110        120 
SIQPGAPKTI VRGSKGAKDG ALTLLLDEFE NMSVTRSNSL RRDSPPPPAR ARQENGMPEE 

       130        140        150        160        170        180 
PATTARGGPG KAGSRGRFAG HSEAGGGSGD RRRAGPEKRP KSSREGSGGP QESSRDKRPL 

       190        200        210        220        230        240 
SGPDVGTPQP AGLASGAKLA AGRPFNTYPR ADTDHPSRGA QGEPHDVAPN GPSAGGLAIP 

       250        260        270        280        290        300 
QSSSSSSRPP TRARGAPSPG VLGPHASEPQ LAPPACTPAA PAVPGPPGPR SPQREPQRVS 

       310        320        330        340        350        360 
HEQFRAALQL VVDPGDPRSY LDNFIKIGEG STGIVCIATV RSSGKLVAVK KMDLRKQQRR 

       370        380        390        400        410        420 
ELLFNEVVIM RDYQHENVVE MYNSYLVGDE LWVVMEFLEG GALTDIVTHT RMNEEQIAAV 

       430        440        450        460        470        480 
CLAVLQALSV LHAQGVIHRD IKSDSILLTH DGRVKLSDFG FCAQVSKEVP RRKSLVGTPY 

       490        500        510        520        530        540 
WMAPELISRL PYGPEVDIWS LGIMVIEMVD GEPPYFNEPP LKAMKMIRDN LPPRLKNLHK 

       550        560        570        580        590            
VSPSLKGFLD RLLVRDPAQR ATAAELLKHP FLAKAGPPAS IVPLMRQNRT R
3D Structures in PDB
2BVA (X-Ray,2.30 Å resolution)
2CDZ (X-Ray,2.30 Å resolution)
2Q0N (X-Ray,1.75 Å resolution)
2X4Z (X-Ray,2.10 Å resolution)
Comments
PAK4 is a memeber of the p21-activated serine/threonine kinases closely related to the progression and metastasis of cancer. PAK4 interacts with β-catenin and phosphorylates Ser675 of β-catenin. β-catenin Ser675 phosphorylation by PAK4 promotes its transcription activity and inhibits its degradation. Li et al. showed that PAK4 is a nucleocytoplasmic shuttling protein with three NESs. Among them, the N-terminal NES plays a decisive role in its export activity. The import of PAK4 depends on importin α5.
References
[1]. "Nucleo-cytoplasmic shuttling of PAK4 modulates ?-catenin intracellular translocation and signaling."
Li Y, Shao Y, Tong Y, Shen T, Zhang J, Li Y, Gu H, Li F. (2012) Biochim Biophys Acta, 1823:465-75 PubMed
User Input
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