Summary for HSCARG (NES ID: 225)

Full Name
NmrA-like family domain-containing protein 1     UniProt    
Alternative Names
None
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1A CRM1-Dependent Nuclear Export Signal Controls Nucleocytoplasmic Translocation of HSCARG, Which Regulates NF-kappaB Activity., Zhang et al., Traffic, 2012
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
I272A/L274A/L276A/L278A Ref.1A CRM1-Dependent Nuclear Export Signal Controls Nucleocytoplasmic Translocation of HSCARG, Which Regulates NF-kappaB Activity., Zhang et al., Traffic, 2012
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
271DIELTLRLN279 Ref.1A CRM1-Dependent Nuclear Export Signal Controls Nucleocytoplasmic Translocation of HSCARG, Which Regulates NF-kappaB Activity., Zhang et al., Traffic, 2012
Secondary Structure of Export Signal
short α-helix flanked by loops
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 
MVDKKLVVVF GGTGAQGGSV ARTLLEDGTF KVRVVTRNPR KKAAKELRLQ GAEVVQGDQD 

        70         80         90        100        110        120 
DQVIMELALN GAYATFIVTN YWESCSQEQE VKQGKLLADL ARRLGLHYVV YSGLENIKKL 

       130        140        150        160        170        180 
TAGRLAAAHF DGKGEVEEYF RDIGVPMTSV RLPCYFENLL SHFLPQKAPD GKSYLLSLPT 

       190        200        210        220        230        240 
GDVPMDGMSV SDLGPVVLSL LKMPEKYVGQ NIGLSTCRHT AEEYAALLTK HTRKVVHDAK 

       250        260        270        280        290            
MTPEDYEKLG FPGARDLANM FRFYALRPDR DIELTLRLNP KALTLDQWLE QHKGDFNLL
3D Structures in PDB
2EXX (X-Ray,2.40 Å resolution)
3DXF (X-Ray,2.20 Å resolution)
3E5M (X-Ray,2.70 Å resolution)
Comments
HSCARG is an inhibitor of nuclear factor-κB. HSCARG blocks basal and stimulus-coupled NF-κB by regulating the ubiquitination of the NF-κB subunit RelA. HSCARG also interacts with IκB kinase complex, inhibits the phosphorylation of IKKβ, blocks the degradation of IκBα and further suppresses NF-κB activity. Zhang et al. showed that HSCARG contains one NES and mutation of the NES decreases the interaction between HSCARG and IKKβ , thus weakened the inhibition of NF-κB.
References
[1]. "A CRM1-Dependent Nuclear Export Signal Controls Nucleocytoplasmic Translocation of HSCARG, Which Regulates NF-kappaB Activity."
Zhang M, Hu B, Li T, Peng Y, Guan J, Lai S, Zheng X (2012) Traffic, 13:790-9 PubMed
User Input
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