Summary for Ltv1 (NES ID: 74)

Full Name
Protein LTV1     UniProt    
Alternative Names
Low-temperature viability protein 1   
Organism
Saccharomyces cerevisiae (Baker's yeast)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1Ltv1 is required for efficient nuclear export of the ribosomal small subunit in Saccharomyces cerevisiae., Seiser et al., Genetics, 2006 Ref.2Genetic analysis of the ribosome biogenesis factor Ltv1 of Saccharomyces cerevisiae., Merwin et al., Genetics, 2014
Mutations That Affect Nuclear Export
Unknown
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
161FKPDMNPALREVLEALEDEAYVVNDD186, 168ALREVLEALEDE179, 451LEKVTNTLSSLKF463 Ref.1Ltv1 is required for efficient nuclear export of the ribosomal small subunit in Saccharomyces cerevisiae., Seiser et al., Genetics, 2006
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 
MSKKFSSKNS QRYVVVHRPH DDPSFYDTDA SAHVLVPVSN PNKTSPEADL RKKDVSSTKP 

        70         80         90        100        110        120 
KGRRAHVGEA ALYGINFDDS EYDYTQHLKP IGLDPENSIF IASKGNEQKV EKKNIEDLFI 

       130        140        150        160        170        180 
EPKYRRDEIE KDDALPVFQR GMAKPEYLLH QQDTTDEIRG FKPDMNPALR EVLEALEDEA 

       190        200        210        220        230        240 
YVVNDDVVVE DISKKTQLQG DNYGEEEKED DIFAQLLGSG EAKDEDEFED EFDEWDIDNV 

       250        260        270        280        290        300 
ENFEDENYVK EMAQFDNIEN LEDLENIDYQ ADVRRFQKDN SILEKHNSDD EFSNAGLDSV 

       310        320        330        340        350        360 
NPSEEEDVLG ELPSIQDKSK TGKKKRKSRQ KKGAMSDVSG FSMSSSAIAR TETMTVLDDQ 

       370        380        390        400        410        420 
YDQIINGYEN YEEELEEDEE QNYQPFDMSA ERSDFESMLD DFLDNYELES GGRKLAKKDK 

       430        440        450        460                       
EIERLKEAAD EVSKGKLSQR RNRERQEKKK LEKVTNTLSS LKF
3D Structures in PDB
Not Available
Comments
Ltv1 is one of the many non-ribosomal factors that is required for the biogenesis of the small subunit of the ribosomes. Seiser et al. showed that Ltv1 is not nucleolar protein. Instead, it shuttles between the nucleus and the cytoplasm. LMB treatment caused a rapid nuclear accumulation of Lt1. They identified a putative NES (aa 169-179) by sequence alignment. Furthermore, they showed that the NES is sufficient to export of fusion protein (NLSSV40-NESLtv1-GFP). However, they stated in the paper, they used a 40 aa segment containing the NES, including 7 aa upstream and downstream of NES. But they didn't specify the other 15 aa. Other experiments were carried out in the paper to suggest that Ltv1 is involved in the export of the small subunit.
References
[1]. "Ltv1 is required for efficient nuclear export of the ribosomal small subunit in Saccharomyces cerevisiae."
Seiser RM, Sundberg AE, Wollam BJ, Zobel-Thropp P, Baldwin K, Spector MD, Lycan DE (2006) Genetics, 174:679-91 PubMed
[2]. "Genetic analysis of the ribosome biogenesis factor Ltv1 of Saccharomyces cerevisiae."
Merwin JR, Bogar LB, Poggi SB, Fitch RM, Johnson AW, Lycan DE (2014) Genetics, 198:1071-85 PubMed
User Input
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