Summary for AP2B1 (NES ID: 382)

Full Name
AP-2 complex subunit beta     UniProt    
Alternative Names
Beta-2-adaptin, Adaptor-related protein complex 2 subunit beta, Clathrin assembly protein complex 2 beta large chain, AP105B   
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
Reporter activity when co-expressed with CRM1 Ref.2Using a Simple Cellular Assay to Map NES Motifs in Cancer-Related Proteins, Gain Insight into CRM1-Mediated NES Export, and Search for NES-Harboring Micropeptides, Sendino et al., Int J Mol Sci, 2020
Mutations That Affect Nuclear Export
Unknown
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
256VLSAVKVLMKFLELLPKDS274 Ref.2Using a Simple Cellular Assay to Map NES Motifs in Cancer-Related Proteins, Gain Insight into CRM1-Mediated NES Export, and Search for NES-Harboring Micropeptides, Sendino et al., Int J Mol Sci, 2020
Secondary Structure of Export Signal
helix-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 
MTDSKYFTTN KKGEIFELKA ELNNEKKEKR KEAVKKVIAA MTVGKDVSSL FPDVVNCMQT 

        70         80         90        100        110        120 
DNLELKKLVY LYLMNYAKSQ PDMAIMAVNS FVKDCEDPNP LIRALAVRTM GCIRVDKITE 

       130        140        150        160        170        180 
YLCEPLRKCL KDEDPYVRKT AAVCVAKLHD INAQMVEDQG FLDSLRDLIA DSNPMVVANA 

       190        200        210        220        230        240 
VAALSEISES HPNSNLLDLN PQNINKLLTA LNECTEWGQI FILDCLSNYN PKDDREAQSI 

       250        260        270        280        290        300 
CERVTPRLSH ANSAVVLSAV KVLMKFLELL PKDSDYYNML LKKLAPPLVT LLSGEPEVQY 

       310        320        330        340        350        360 
VALRNINLIV QKRPEILKQE IKVFFVKYND PIYVKLEKLD IMIRLASQAN IAQVLAELKE 

       370        380        390        400        410        420 
YATEVDVDFV RKAVRAIGRC AIKVEQSAER CVSTLLDLIQ TKVNYVVQEA IVVIRDIFRK 

       430        440        450        460        470        480 
YPNKYESIIA TLCENLDSLD EPDARAAMIW IVGEYAERID NADELLESFL EGFHDESTQV 

       490        500        510        520        530        540 
QLTLLTAIVK LFLKKPSETQ ELVQQVLSLA TQDSDNPDLR DRGYIYWRLL STDPVTAKEV 

       550        560        570        580        590        600 
VLSEKPLISE ETDLIEPTLL DELICHIGSL ASVYHKPPNA FVEGSHGIHR KHLPIHHGST 

       610        620        630        640        650        660 
DAGDSPVGTT TATNLEQPQV IPSQGDLLGD LLNLDLGPPV NVPQVSSMQM GAVDLLGGGL 

       670        680        690        700        710        720 
DSLVGQSFIP SSVPATFAPS PTPAVVSSGL NDLFELSTGI GMAPGGYVAP KAVWLPAVKA 

       730        740        750        760        770        780 
KGLEISGTFT HRQGHIYMEM NFTNKALQHM TDFAIQFNKN SFGVIPSTPL AIHTPLMPNQ 

       790        800        810        820        830        840 
SIDVSLPLNT LGPVMKMEPL NNLQVAVKNN IDVFYFSCLI PLNVLFVEDG KMERQVFLAT 

       850        860        870        880        890        900 
WKDIPNENEL QFQIKECHLN ADTVSSKLQN NNVYTIAKRN VEGQDMLYQS LKLTNGIWIL 

       910        920        930                                  
AELRIQPGNP NYTLSLKCRA PEVSQYIYQV YDSILKN
3D Structures in PDB
4UQI (X-Ray,2.79 Å resolution)
2IV9 (X-Ray,1.9 Å resolution)
Comments
AP2B is a component of the adaptor protein complex 2, which is responsible for protein transport through vesicular traffic pathways. This NES was identified by in silico prediction methods in Sendino et al. using possible XPO1/CRM1-cancer exportome proteins identified previously as putative CRM1-binders by Kirli et al. (not all proteins were validated in full-length). This putative NES peptide was tested using Rev(1.4)-GFP and SRVB/A reporters based on replacing survivin NES and with other peptide sequences. CRM1-dependency is illustrated by cytoplasmic accumulation of the reporter when co-expressed with CRM1. However, the export activity of this isolated NES is weak and the peptide is part of the helical repeat domain which does not appear to be entirely accessible. Ref.1A deep proteomics perspective on CRM1-mediated nuclear export and nucleocytoplasmic partitioning, Kirli et al., eLife, 2015 Ref.2Using a Simple Cellular Assay to Map NES Motifs in Cancer-Related Proteins, Gain Insight into CRM1-Mediated NES Export, and Search for NES-Harboring Micropeptides, Sendino et al., Int J Mol Sci, 2020
References
[1]. "A deep proteomics perspective on CRM1-mediated nuclear export and nucleocytoplasmic partitioning"
Kırlı K, Karaca S, Dehne HJ, Samwer M, Pan KT, Lenz C, Urlaub H, Görlich D. (2015) eLife, 4:e11466 PubMed
[2]. "Using a Simple Cellular Assay to Map NES Motifs in Cancer-Related Proteins, Gain Insight into CRM1-Mediated NES Export, and Search for NES-Harboring Micropeptides"
Sendino M, Omaetxebarria MJ, Prieto G, Rodriguez JA. (2020) Int J Mol Sci, 21(17):E6341 PubMed
User Input
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