Summary for FLIP-L (NES ID: 147)

Full Name
CASP8 and FADD-like apoptosis regulator     UniProt    
Alternative Names
Cellular FLICE-like inhibitory protein (c-FLIP)
Caspase-eight-related protein (Casper)
Caspase-like apoptosis regulatory protein (CLARP)
MACH-related inducer of toxicity (MRIT)
Caspase homolog (CASH)    
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1Modulation of Wnt signaling by the nuclear localization of cellular FLIP-L., Katayama et al., J Cell Sci, 2010
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L439A/L440A Ref.1Modulation of Wnt signaling by the nuclear localization of cellular FLIP-L., Katayama et al., J Cell Sci, 2010
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
Undetermined
Secondary Structure of Export Signal
α-helix (residues 439-446)
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 
MSAEVIHQVE EALDTDEKEM LLFLCRDVAI DVVPPNVRDL LDILRERGKL SVGDLAELLY 

        70         80         90        100        110        120 
RVRRFDLLKR ILKMDRKAVE THLLRNPHLV SDYRVLMAEI GEDLDKSDVS SLIFLMKDYM 

       130        140        150        160        170        180 
GRGKISKEKS FLDLVVELEK LNLVAPDQLD LLEKCLKNIH RIDLKTKIQK YKQSVQGAGT 

       190        200        210        220        230        240 
SYRNVLQAAI QKSLKDPSNN FRLHNGRSKE QRLKEQLGAQ QEPVKKSIQE SEAFLPQSIP 

       250        260        270        280        290        300 
EERYKMKSKP LGICLIIDCI GNETELLRDT FTSLGYEVQK FLHLSMHGIS QILGQFACMP 

       310        320        330        340        350        360 
EHRDYDSFVC VLVSRGGSQS VYGVDQTHSG LPLHHIRRMF MGDSCPYLAG KPKMFFIQNY 

       370        380        390        400        410        420 
VVSEGQLEDS SLLEVDGPAM KNVEFKAQKR GLCTVHREAD FFWSLCTADM SLLEQSHSSP 

       430        440        450        460        470        480 
SLYLQCLSQK LRQERKRPLL DLHIELNGYM YDWNSRVSAK EKYYVWLQHT LRKKLILSYT
3D Structures in PDB
3H11 (X-Ray,1.90 Å resolution)
Comments
cFLIP-L is a cytoplasmic protein that inhibits the apoptosis signaling initiated by death receptor ligation at the cell membrane. cFLIP-L can also enhance Wnt signaling by inhibiting ubiquitylation of &beta-catenin, a mediator of Wnt signaling. Katayama et al. showed that cFLIP-L is present in both the nucleus and the cytoplasm and there are both a bipartie NLS and NES present at its C-terminus. NLS- and NES-mutants can only marginally enhance Wnt signaling as compared to the wild type, although the anti-apoptotic function was not apparently affected by these mutations.
Doubts about NESs: The proposed NES failed to bind CRM1 in GST-pulldown assay (Chook Lab, unpublished results).
References
[1]. "Modulation of Wnt signaling by the nuclear localization of cellular FLIP-L."
Katayama R, Ishioka T, Takada S, Takada R, Fujita N, Tsuruo T, Naito M (2010) J Cell Sci, 123:23-8 PubMed
User Input
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