Summary for AGO1 (NES ID: 313)

Full Name
Protein argonaute 1     UniProt    
Alternative Names
None
Organism
Arabidopsis thaliana    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1Nucleo-cytosolic Shuttling of ARGONAUTE1 Prompts a Revised Model of the Plant MicroRNA Pathway, Bologna et al., Mol Cell, 2018
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L149A/F153A/L156A/V158A Ref.1Nucleo-cytosolic Shuttling of ARGONAUTE1 Prompts a Revised Model of the Plant MicroRNA Pathway, Bologna et al., Mol Cell, 2018
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
149LAQQFEQLSV158 Ref.1Nucleo-cytosolic Shuttling of ARGONAUTE1 Prompts a Revised Model of the Plant MicroRNA Pathway, Bologna et al., Mol Cell, 2018
Secondary Structure of Export Signal
Predicted to be disordered
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 
MVRKRRTDAP SEGGEGSGSR EAGPVSGGGR GSQRGGFQQG GGQHQGGRGY TPQPQQGGRG 

        70         80         90        100        110        120 
GRGYGQPPQQ QQQYGGPQEY QGRGRGGPPH QGGRGGYGGG RGGGPSSGPP QRQSVPELHQ 

       130        140        150        160        170        180 
ATSPTYQAVS SQPTLSEVSP TQVPEPTVLA QQFEQLSVEQ GAPSQAIQPI PSSSKAFKFP 

       190        200        210        220        230        240 
MRPGKGQSGK RCIVKANHFF AELPDKDLHH YDVTITPEVT SRGVNRAVMK QLVDNYRDSH 

       250        260        270        280        290        300 
LGSRLPAYDG RKSLYTAGPL PFNSKEFRIN LLDEEVGAGG QRREREFKVV IKLVARADLH 

       310        320        330        340        350        360 
HLGMFLEGKQ SDAPQEALQV LDIVLRELPT SRYIPVGRSF YSPDIGKKQS LGDGLESWRG 

       370        380        390        400        410        420 
FYQSIRPTQM GLSLNIDMSS TAFIEANPVI QFVCDLLNRD ISSRPLSDAD RVKIKKALRG 

       430        440        450        460        470        480 
VKVEVTHRGN MRRKYRISGL TAVATRELTF PVDERNTQKS VVEYFHETYG FRIQHTQLPC 

       490        500        510        520        530        540 
LQVGNSNRPN YLPMEVCKIV EGQRYSKRLN ERQITALLKV TCQRPIDREK DILQTVQLND 

       550        560        570        580        590        600 
YAKDNYAQEF GIKISTSLAS VEARILPPPW LKYHESGREG TCLPQVGQWN MMNKKMINGG 

       610        620        630        640        650        660 
TVNNWICINF SRQVQDNLAR TFCQELAQMC YVSGMAFNPE PVLPPVSARP EQVEKVLKTR 

       670        680        690        700        710        720 
YHDATSKLSQ GKEIDLLIVI LPDNNGSLYG DLKRICETEL GIVSQCCLTK HVFKMSKQYM 

       730        740        750        760        770        780 
ANVALKINVK VGGRNTVLVD ALSRRIPLVS DRPTIIFGAD VTHPHPGEDS SPSIAAVVAS 

       790        800        810        820        830        840 
QDWPEITKYA GLVCAQAHRQ ELIQDLFKEW KDPQKGVVTG GMIKELLIAF RRSTGHKPLR 

       850        860        870        880        890        900 
IIFYRDGVSE GQFYQVLLYE LDAIRKACAS LEAGYQPPVT FVVVQKRHHT RLFAQNHNDR 

       910        920        930        940        950        960 
HSVDRSGNIL PGTVVDSKIC HPTEFDFYLC SHAGIQGTSR PAHYHVLWDE NNFTADGLQS 

       970        980        990       1000       1010       1020 
LTNNLCYTYA RCTRSVSIVP PAYYAHLAAF RARFYMEPET SDSGSMASGS MARGGGMAGR 

      1030       1040                                             
STRGPNVNAA VRPLPALKEN VKRVMFYC
3D Structures in PDB
4G0X (X-Ray,1.35 Å resolution)
Comments
AtAGO1 is the silencing effector protein for plant microRNAs. Mammalian pre-miRNAs are exported by Exportin-5 and processed by Dicer into mature miRNAs in the cytosol before loading into AGO1. However there is no Dicer homologs in plants. Bologna et al. found that AtAGO1 contains putative NES in the N-coil region which is conserved across plant homologs. Nuclear export activity of the NES is LMB-sensitive and can be abolished by mutations in GFP-fusions and full-length proteins. The authors also found that plant miRNAs are loaded onto AGO1 before CRM1-mediated export. Sequence matches a traditional NES consensus and is part of the disordered N-coil domain.
References
[1]. "Nucleo-cytosolic Shuttling of ARGONAUTE1 Prompts a Revised Model of the Plant MicroRNA Pathway"
Bologna NG, Iselin R, Abriata LA, Sarazin A, Pumplin N, Jay F, Grentzinger T, Dal Peraro M, Voinnet O. (2018) Mol Cell, 69(4):709-719 PubMed
User Input
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