Summary for β-Arrestin-2 (NES ID: 241)

Full Name
Beta-arrestin-2     UniProt    
Alternative Names
Arrestin beta-2   
Organism
Rattus norvegicus (Rat)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1Differential nucleocytoplasmic shuttling of beta-arrestins. Characterization of a leucine-rich nuclear export signal in beta-arrestin2., Scott et al., J Biol Chem, 2002 Ref.2Subcellular localization of beta-arrestins is determined by their intact N domain and the nuclear export signal at the C terminus., Wang et al., J Biol Chem, 2003
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
V388A, F392A, L395A, L397A Ref.1Differential nucleocytoplasmic shuttling of beta-arrestins. Characterization of a leucine-rich nuclear export signal in beta-arrestin2., Scott et al., J Biol Chem, 2002 Ref.2Subcellular localization of beta-arrestins is determined by their intact N domain and the nuclear export signal at the C terminus., Wang et al., J Biol Chem, 2003
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
385DDIVFEDFARLRLKGMKDDDCDDQFC410 Ref.2Subcellular localization of beta-arrestins is determined by their intact N domain and the nuclear export signal at the C terminus., Wang et al., J Biol Chem, 2003
Secondary Structure of Export Signal
Loop
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 
MGEKPGTRVF KKSSPNCKLT VYLGKRDFVD HLDKVDPVDG VVLVDPDYLK DRKVFVTLTC 

        70         80         90        100        110        120 
AFRYGREDLD VLGLSFRKDL FIATYQAFPP MPNPPRPPTR LQDRLLKKLG QHAHPFFFTI 

       130        140        150        160        170        180 
PQNLPCSVTL QPGPEDTGKA CGVDFEIRAF CAKSIEEKSH KRNSVRLIIR KVQFAPETPG 

       190        200        210        220        230        240 
PQPSAETTRH FLMSDRRSLH LEASLDKELY YHGEPLNVNV HVTNNSAKTV KKIRVSVRQY 

       250        260        270        280        290        300 
ADICLFSTAQ YKCPVAQLEQ DDQVSPSSTF CKVYTITPLL SDNREKRGLA LDGQLKHEDT 

       310        320        330        340        350        360 
NLASSTIVKE GANKEVLGIL VSYRVKVKLV VSRGGDVSVE LPFVLMHPKP HDHITLPRPQ 

       370        380        390        400        410            
SAPREIDIPV DTNLIEFDTN YATDDDIVFE DFARLRLKGM KDDDCDDQFC
3D Structures in PDB
1JSY (X-Ray,2.90 Å resolution)
2WTR (X-Ray,2.90 Å resolution)
3P2D (X-Ray,3.00 Å resolution)
Comments
β-Arrestins are non-visual arrestins involved in the termination of G protein-coupled receptor signaling. β-Arrestins have two isoforms: β-Arrestin-1 and β-Arrestin-2. Despite of the sequence and structural similarity, β-Arrestin-1 and β-Arrestin-2 display distinct subcellular localization. β-Arrestin-1 is found throughout the cell, while β-Arrestin-2 is mainly cytoplasmic. Scott et al. demonstrated that β-Arrestin-2 is a nucleocytoplasmic shuttling protein with one CRM1-dependent NES at the C-terminus. Mutation at either L385 or L397 abolishes export, while mutation of I387 has no effect. Note that the PDBs listed are for β-Arrestin-1, where the single substitution of L395 to Q394 explains the lack of functional NES in β-Arrestin-1. They also showed that the shuttling of β-Arrestin-2 serves to redirect nuclear JNK3 to cytoplasm. Wang et al. reported the NES of β-Arrestin-2 in human (Uniprot: P32121).
References
[1]. "Differential nucleocytoplasmic shuttling of beta-arrestins. Characterization of a leucine-rich nuclear export signal in beta-arrestin2."
Scott MG, Le Rouzic E, Perianin A, Pierotti V, Enslen H, Benichou S, Marullo S, Benmerah A (2002) J Biol Chem, 277:37693-701 PubMed
[2]. "Subcellular localization of beta-arrestins is determined by their intact N domain and the nuclear export signal at the C terminus."
Wang P, Wu Y, Ge X, Ma L, Pei G (2003) J Biol Chem, 278:11648-53 PubMed
User Input
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