Summary for An3 (NES ID: 88)

Full Name
Putative ATP-dependent RNA helicase an3     UniProt    
Alternative Names
None
Organism
Xenopus laevis (African clawed frog)    
Experimental Evidence for CRM1-mediated Export
Binds CRM1,  Inhibit or inhibited by other CRM1 cargos Ref.1RanGTP-regulated interactions of CRM1 with nucleoporins and a shuttling DEAD-box helicase, Askjaer et al., Mol Cell Biol, 1999
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L19A/L21A, E389Q Ref.1RanGTP-regulated interactions of CRM1 with nucleoporins and a shuttling DEAD-box helicase, Askjaer et al., Mol Cell Biol, 1999 Ref.2Nuclear export of the DEAD box An3 protein by CRM1 is coupled to An3 helicase activity, Askjaer et al., J Biol Chem, 2000
Mutations That Affect CRM1 Binding
*shown as red residues in the full sequence
1MSHVAVENVLNLDQQFAGLDL21 by Deletion Ref.1RanGTP-regulated interactions of CRM1 with nucleoporins and a shuttling DEAD-box helicase, Askjaer et al., Mol Cell Biol, 1999
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 
MSHVAVENVL NLDQQFAGLD LNSADAESGV AGTKGRYIPP HLRNKEASRN DSNWDSGRGG 

        70         80         90        100        110        120 
NGYINGMQDD RDGRMNGYDR GGYGSRGTGR SDRGFYDREN SGWNSGRDKD AYSSFGSRGD 

       130        140        150        160        170        180 
RGKGSLFNER GSGSRRTDDR RQDGFDGMGN RSDKSGFGRF DRGNSRWSDD RNDEDDWSKP 

       190        200        210        220        230        240 
LAPNDRVEQE LFSGSNTGIN FEKYDDIPVE ATGSNCPPHI ESFHDVTMGE IIMGNIQLTR 

       250        260        270        280        290        300 
YTRPTPVQKH AIPIIIEKRD LMACAQTGSG KTAAFLLPIL SQIYADGPGD AMKHLQENGR 

       310        320        330        340        350        360 
YGRRKQFPLS LVLAPTRELA VQIYEEARKF AYRSRVRPCV VYGGADIGQQ IRDLERGCHL 

       370        380        390        400        410        420 
LVATPGRLVD MMERGKIGLD FCKYLVLDEA DRMLDMGFEP QIRRIVEQDT MPPKGVRQTM 

       430        440        450        460        470        480 
MFSATFPKEI QILARDFLDE YIFLAVGRVG STSENITQKV VWVEEMDKRS FLLDLLNATG 

       490        500        510        520        530        540 
KDSLTLVFVE TKKGADALED FLYHEGYACT SIHGDRSQRD REEALHQFRS GKSPILVATA 

       550        560        570        580        590        600 
VAARGLDISN VKHVINFDLP SDIEEYVHRI GRTGRVGNLG LATSFFNEKN INITKDLLDL 

       610        620        630        640        650        660 
LVEAKQEVPS WLENMAYEQH HKSSSRGRSK SRFSGGFGAK DYRQSSGAGS SFGSSRGGRS 

       670        680        690                                  
SGHGGSRGFG GGYGGFYNSD GYGGNYGGSS QVDWWGN
3D Structures in PDB
Not Available
Comments
An3 protein possesses ATPase and RNA helicase activity with the characteristic seven characteristic motifs of DEAD box. It shuttles between the nucleus and the cytoplasm. The nuclear export activity is contained within the first 21 aa at the N-terminus. Deletion of the first 21 aa would abolish in vitro binding and result in nuclear retention of An3. Interestingly, a point mutation outside the proposed NES region (E389Q) will reduce both ATPase activity and its nuclear export in vivo.
References
[1]. "RanGTP-regulated interactions of CRM1 with nucleoporins and a shuttling DEAD-box helicase"
Askjaer P, Bachi A, Wilm M, Bischoff FR, Weeks DL, Ogniewski V, Ohno M, Niehrs C, Kjems J, Mattaj IW, Fornerod M (1999) Mol Cell Biol, 19:6276-6285 PubMed
[2]. "Nuclear export of the DEAD box An3 protein by CRM1 is coupled to An3 helicase activity"
Askjaer P, Rosendahl R, Kjems J. (2000) J Biol Chem, 275:11561-11568 PubMed
User Input
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