Summary for Pap1 (NES ID: 8)

Full Name
AP-1-like transcription factor     UniProt    
Alternative Names
Caffeine resistance protein 3   
Organism
Schizosaccharomyces pombe (Fission yeast)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive,  Mislocalization in Xpo1-1 temperature sensitive strains Ref.1A novel nuclear export signal sensitive to oxidative stress in the fission yeast transcription factor Pap1, Kudo et al., J Biol Chem, 1999
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
I519A, L522A, L526A, C532S
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
515ESFDIDDLCSKLKNKAKCS533 Ref.1A novel nuclear export signal sensitive to oxidative stress in the fission yeast transcription factor Pap1, Kudo et al., J Biol Chem, 1999
Secondary Structure of Export Signal
Unknown
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 
MSGQTETLSS TSNIPIAKAE PEQSADFSAS HKKRGPVSDR SSRRTSSEEV DLMPNVDDEV 

        70         80         90        100        110        120 
DGDVKPKKIG RKNSDQEPSS KRKAQNRAAQ RAFRKRKEDH LKALETQVVT LKELHSSTTL 

       130        140        150        160        170        180 
ENDQLRQKVR QLEEELRILK DGSFTFEMSL PHRNPSLSSL PTTGFSSNFA HMKDGISPQS 

       190        200        210        220        230        240 
NLHLSPNSIE KPNMHQNVLH NDRSADNLNH RYQVPPTLVD SNSAQGTLSP ETPSSSDSPS 

       250        260        270        280        290        300 
NLYLNYPKRK SITHLHHDCS ALSNGENGED VADGKQFCQK LSTACGSIAC SMLTKTTPHR 

       310        320        330        340        350        360 
ASVDILSNLH ESTVSPPMAD ESVQRSSEVS KSIPNVELSL NVNQQFVSPF GGTDSFPLPT 

       370        380        390        400        410        420 
DTGLDSLFEP DSAIENSHLK NVVMEPELFQ AWREPAESLD KEFFNDEGEI DDVFHNYFHN 

       430        440        450        460        470        480 
SNENGDLITN SLHGLDFLEN ANESFPEQMY PFIKHNKDYI SNHPDEVPPD GLPQKGKHDT 

       490        500        510        520        530        540 
SSQMPSENEI VPAKERAYLS CPKVWSKIIN HPRFESFDID DLCSKLKNKA KCSSSGVLLD 

       550                                                        
ERDVEAALNQ FN
3D Structures in PDB
1GD2 (X-Ray,2.00 Å resolution)
1DG2 (X-Ray,2.00 Å resolution)
Comments
Pap1 is a fission yeast AP-1-like transcription factor, which is involved in oxidative stress response. Its bZip and cysteine-rich domains (CRD) are homologous to Yap1/Yap2. Kudo et al. found that residues 515-533 within CRD are sufficient to export GST-GFP to the cytoplasm. LMB mislocalizes the fusion protein. Single mutations I519A, L522A, L526A, and C532S greatly reduce export activity while F517A has a lesser impact. They also noted that the CRD can export GFP-GST fusion protein in mammmalian cells. In both S. pombe and mammalian cell, DEM ihibits nuclear export of Pap1 in the oxidative stress response possibly due through oxidation C532, and C523.
References
[1]. "A novel nuclear export signal sensitive to oxidative stress in the fission yeast transcription factor Pap1"
Kudo N, Taoka, H., Toda, T., Yoshida, M., Horinouchi, S. (1999) J Biol Chem, 274:15151-15158 PubMed
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