Summary for TDP-43 (NES ID: 193)

Full Name
TAR DNA-binding protein 43     UniProt    
Alternative Names
None
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1Disturbance of nuclear and cytoplasmic TAR DNA-binding protein (TDP-43) induces disease-like redistribution, sequestration, and aggregate formation., Winton et al., J Biol Chem, 2008
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L248A/I249A/I250A Ref.1Disturbance of nuclear and cytoplasmic TAR DNA-binding protein (TDP-43) induces disease-like redistribution, sequestration, and aggregate formation., Winton et al., J Biol Chem, 2008
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
Undetermined
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 
MSEYIRVTED ENDEPIEIPS EDDGTVLLST VTAQFPGACG LRYRNPVSQC MRGVRLVEGI 

        70         80         90        100        110        120 
LHAPDAGWGN LVYVVNYPKD NKRKMDETDA SSAVKVKRAV QKTSDLIVLG LPWKTTEQDL 

       130        140        150        160        170        180 
KEYFSTFGEV LMVQVKKDLK TGHSKGFGFV RFTEYETQVK VMSQRHMIDG RWCDCKLPNS 

       190        200        210        220        230        240 
KQSQDEPLRS RKVFVGRCTE DMTEDELREF FSQYGDVMDV FIPKPFRAFA FVTFADDQIA 

       250        260        270        280        290        300 
QSLCGEDLII KGISVHISNA EPKHNSNRQL ERSGRFGGNP GGFGNQGGFG NSRGGGAGLG 

       310        320        330        340        350        360 
NNQGSNMGGG MNFGAFSINP AMMAAAQAAL QSSWGMMGML ASQQNQSGPS GNNQNQGNMQ 

       370        380        390        400        410            
REPNQAFGSG NNSYSGSNSG AAIGWGSASN AGSGSGFNGG FGSSMDSKSS GWGM
3D Structures in PDB
Not Available
Comments
Normally a nuclear protein, alterations in TDP-43 nucleocytoplasmic trafficking can contribute to its pathological redistribution in neuronal nuclei, perikarya, and neurites. TDP-43 is proposed to contains both an NLS and an NES. The NES is purported to be between amino acids 239-250, and the NES deletion mutant expressed pathological nuclear inclusions. Mutation on 239/243 was carried out in the paper as well (δNES1). But no results were mentioned. Therefore, not noted in the database. However, Pinarbasi et al. revisited the proposed NES and showed that it is not sufficient for directing nuclear export and it only interacts with CRM1 very weakly in vitro. Previously studied NES mutant was found to have issues with solubility and is therefore not an illustration of disrupted NES function. They also demonstrated that the shuttling of TDP-43 is not affected by LMB and therefore is CRM1-independent and showed that passive diffusion is the mechanism of TDP-43 export instead. Ref.2Active Nuclear Import and Passive Nuclear Export Are the Primary Determinants of TDP-43 Localization, Pinarbasi et al., Sci Rep, 2018
References
[1]. "Disturbance of nuclear and cytoplasmic TAR DNA-binding protein (TDP-43) induces disease-like redistribution, sequestration, and aggregate formation."
Winton MJ, Igaz LM, Wong MM, Kwong LK, Trojanowski JQ, Lee VM. (2008) J Biol Chem, 283:13302-9 PubMed
[2]. "Active Nuclear Import and Passive Nuclear Export Are the Primary Determinants of TDP-43 Localization"
Pinarbasi ES, Cağatay T, Fung HYJ, Li YC, Chook YM, Thomas PJ. (2018) Sci Rep, 8(1):7083 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.

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