Summary for p73 (NES ID: 39)

Full Name
Tumor protein p73     UniProt    
Alternative Names
p53-like transcription factor
p53-related protein   
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1Nuclear import and export signals in control of the p53-related protein p73, Inouse et al., J Biol Chem, 2002
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L375A/L377A Ref.1Nuclear import and export signals in control of the p53-related protein p73, Inouse et al., J Biol Chem, 2002
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
364NFEILMKLKESLELMELVP382 Ref.1Nuclear import and export signals in control of the p53-related protein p73, Inouse et al., J Biol Chem, 2002
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 
MAQSTATSPD GGTTFEHLWS SLEPDSTYFD LPQSSRGNNE VVGGTDSSMD VFHLEGMTTS 

        70         80         90        100        110        120 
VMAQFNLLSS TMDQMSSRAA SASPYTPEHA ASVPTHSPYA QPSSTFDTMS PAPVIPSNTD 

       130        140        150        160        170        180 
YPGPHHFEVT FQQSSTAKSA TWTYSPLLKK LYCQIAKTCP IQIKVSTPPP PGTAIRAMPV 

       190        200        210        220        230        240 
YKKAEHVTDV VKRCPNHELG RDFNEGQSAP ASHLIRVEGN NLSQYVDDPV TGRQSVVVPY 

       250        260        270        280        290        300 
EPPQVGTEFT TILYNFMCNS SCVGGMNRRP ILIIITLEMR DGQVLGRRSF EGRICACPGR 

       310        320        330        340        350        360 
DRKADEDHYR EQQALNESSA KNGAASKRAF KQSPPAVPAL GAGVKKRRHG DEDTYYLQVR 

       370        380        390        400        410        420 
GRENFEILMK LKESLELMEL VPQPLVDSYR QQQQLLQRPS HLQPPSYGPV LSPMNKVHGG 

       430        440        450        460        470        480 
MNKLPSVNQL VGQPPPHSSA ATPNLGPVGP GMLNNHGHAV PANGEMSSSH SAQSMVSGSH 

       490        500        510        520        530        540 
CTPPPPYHAD PSLVSFLTGL GCPNCIEYFT SQGLQSIYHL QNLTIEDLGA LKIPEQYRMT 

       550        560        570        580        590        600 
IWRGLQDLKQ GHDYSTAQQL LRSSNAATIS IGGSGELQRQ RVMEAVHFRV RHTITIPNRG 

       610        620        630                                  
GPGGGPDEWA DFGFDLPDCK ARKQPIKEEF TEAEIH
3D Structures in PDB
2WTT (X-Ray,2.30 Å resolution)
Comments
p73 belongs to the p53 family of proteins, and shares a high degree of aa similarity with p53. While p53 is a bona fide tumor suppressor, p73 deficiency leads to neurological, pheromonal, and inflammatory defects without an apparent increased cancer incidence. Inoue et al. conducted studies to examine the subcellular localization of p73 and found that at steady state, p73 is mostly nuclear. They identified a bipartite NLS within aa 327-348, which can independently direct cytoplasmic protein PK to the nucleus, when fused together. Both aa 327-328, and aa 345-348 are required for the import. They also demonstrated that deletion of 91-138 inhibit proper nuclear import, however, aa 91-138 is not an independent NLS. LMB treatment leads to an increased percentage of cells with nuclear p73. This showed that p73 is actively exported from the nucleus also. To identify functional NES, they showed that fusion of p73(364-382) to 2YF resulted in significant cytoplasmic accumulation. This process is inhibited by LMB treatment or L375A/L377A mutation.
References
[1]. "Nuclear import and export signals in control of the p53-related protein p73"
Inoue, T., Stuart, J., Leno, R., Maki, C.G. (2002) J Biol Chem, 277:15053-15060 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: