Summary for Fbxo7 (NES ID: 230)

Full Name
F-box only protein 7     UniProt    
Alternative Names
None
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive,  Binds CRM1 Ref.1A Competitive binding mechanism between Skp1 and exportin 1 (CRM1) controls the localization of a subset of F-box proteins, Nelson et al., J Biol Chem, 2011
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L332A/L335A/L337A/L339A/L341A Ref.1A Competitive binding mechanism between Skp1 and exportin 1 (CRM1) controls the localization of a subset of F-box proteins, Nelson et al., J Biol Chem, 2011
Mutations That Affect CRM1 Binding
*shown as red residues in the full sequence
332LVVLPLELKLRIFRLLDVRSVLSLSAVCRDLFTASNDPLLWRFL375 by Deletion Ref.1A Competitive binding mechanism between Skp1 and exportin 1 (CRM1) controls the localization of a subset of F-box proteins, Nelson et al., J Biol Chem, 2011
Functional Export Signals
*shown as underlined residues in the full sequence
332LVVLPLELKL341 Ref.1A Competitive binding mechanism between Skp1 and exportin 1 (CRM1) controls the localization of a subset of F-box proteins, Nelson et al., J Biol Chem, 2011
Secondary Structure of Export Signal
Unknown
Other Residues Important for Export
*shown as green residues in the full sequence
R378 Ref.1A Competitive binding mechanism between Skp1 and exportin 1 (CRM1) controls the localization of a subset of F-box proteins, Nelson et al., J Biol Chem, 2011
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 
MRLRVRLLKR TWPLEVPETE PTLGHLRSHL RQSLLCTWGY SSNTRFTITL NYKDPLTGDE 

        70         80         90        100        110        120 
ETLASYGIVS GDLICLILQD DIPAPNIPSS TDSEHSSLQN NEQPSLATSS NQTSMQDEQP 

       130        140        150        160        170        180 
SDSFQGQAAQ SGVWNDDSML GPSQNFEAES IQDNAHMAEG TGFYPSEPML CSESVEGQVP 

       190        200        210        220        230        240 
HSLETLYQSA DCSDANDALI VLIHLLMLES GYIPQGTEAK ALSMPEKWKL SGVYKLQYMH 

       250        260        270        280        290        300 
PLCEGSSATL TCVPLGNLIV VNATLKINNE IRSVKRLQLL PESFICKEKL GENVANIYKD 

       310        320        330        340        350        360 
LQKLSRLFKD QLVYPLLAFT RQALNLPDVF GLVVLPLELK LRIFRLLDVR SVLSLSAVCR 

       370        380        390        400        410        420 
DLFTASNDPL LWRFLYLRDF RDNTVRVQDT DWKELYRKRH IQRKESPKGR FVMLLPSSTH 

       430        440        450        460        470        480 
TIPFYPNPLH PRPFPSSRLP PGIIGGEYDQ RPTLPYVGDP ISSLIPGPGE TPSQFPPLRP 

       490        500        510        520                       
RFDPVGPLPG PNPILPGRGG PNDRFPFRPS RGRPTDGRLS FM
3D Structures in PDB
Not Available
Comments
Fbxo7 is a F-box protein and function as an adapter for E3 ubiquitin ligase Skp1. Fbxo7 was found to be associated with both cancer and neurodegenerative diseases. Fbxo7 is over-expressed in cancer cells. Furthermore, Fbxo7 was found to be enriched in nuclei in cancer cells, it is predominantly cytoplasmic in normal cell. Nelson et al. reported that Fbxo7 is a shuttling protein whose distribution is influenced by cell cycle. They identified one functional NES in the F-box domain. Direct interaction between CRM1 and Fbxo7 was shown by GST-pulldown with recombinant proteins and this interaction was ablated when the F-box was removed. Similar NES was detected in at least two of other F-box proteins. The NES overlaps with Skp1 binding region and Skp1 competes with CRM1 for binding to Fbxo7. Interestingly, a pathogenic point mutation R378G in Parkinson disease promotes cytoplasmic localization.
References
[1]. "A Competitive binding mechanism between Skp1 and exportin 1 (CRM1) controls the localization of a subset of F-box proteins"
Nelson DE, Laman H. (2011) J Biol Chem, 286:19804-15 PubMed
User Input
Accurate identification of NESs is difficult because many sequences in the genome match the NES consensus. Therefore, some published NESs may be mistakenly identified. Please help us improve the accuracy of NESdb by providing either a positive or negative flag for the NES in this entry. Supporting comments are required to process the flag.

Supporting comments *

Flag this NES *

Positive
Negative

E-mail: