Summary for CASC3 (NES ID: 379)

Full Name
Cancer susceptibility candidate gene 3 protein     UniProt    
Alternative Names
Metastatic lymph node gene 51 protein (MLN51), Barentsz (Btz)   
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive,  Reporter activity when co-expressed with CRM1 Ref.1Using 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 Ref.3Barentsz, a new component of the Staufen-containing ribonucleoprotein particles in mammalian cells, interacts with Staufen in an RNA-dependent manner, Macchi et al., 2003, 0000
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
D465A Ref.3Barentsz, a new component of the Staufen-containing ribonucleoprotein particles in mammalian cells, interacts with Staufen in an RNA-dependent manner, Macchi et al., 2003, 0000
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
457SSTSGLEQDVAQLNIAEQN475 Ref.1Using 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
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 
MADRRRQRAS QDTEDEESGA SGSDSGGSPL RGGGSCSGSA GGGGSGSLPS QRGGRTGALH 

        70         80         90        100        110        120 
LRRVESGGAK SAEESECESE DGIEGDAVLS DYESAEDSEG EEGEYSEEEN SKVELKSEAN 

       130        140        150        160        170        180 
DAVNSSTKEE KGEEKPDTKS TVTGERQSGD GQESTEPVEN KVGKKGPKHL DDDEDRKNPA 

       190        200        210        220        230        240 
YIPRKGLFFE HDLRGQTQEE EVRPKGRQRK LWKDEGRWEH DKFREDEQAP KSRQELIALY 

       250        260        270        280        290        300 
GYDIRSAHNP DDIKPRRIRK PRYGSPPQRD PNWNGERLNK SHRHQGLGGT LPPRTFINRN 

       310        320        330        340        350        360 
AAGTGRMSAP RNYSRSGGFK EGRAGFRPVE AGGQHGGRSG ETVKHEISYR SRRLEQTSVR 

       370        380        390        400        410        420 
DPSPEADAPV LGSPEKEEAA SEPPAAAPDA APPPPDRPIE KKSYSRARRT RTKVGDAVKL 

       430        440        450        460        470        480 
AEEVPPPPEG LIPAPPVPET TPTPPTKTGT WEAPVDSSTS GLEQDVAQLN IAEQNWSPGQ 

       490        500        510        520        530        540 
PSFLQPRELR GMPNHIHMGA GPPPQFNRME EMGVQGGRAK RYSSQRQRPV PEPPAPPVHI 

       550        560        570        580        590        600 
SIMEGHYYDP LQFQGPIYTH GDSPAPLPPQ GMLVQPGMNL PHPGLHPHQT PAPLPNPGLY 

       610        620        630        640        650        660 
PPPVSMSPGQ PPPQQLLAPT YFSAPGVMNF GNPSYPYAPG ALPPPPPPHL YPNTQAPSQV 

       670        680        690        700                       
YGGVTYYNPA QQQVQPKPSP PRRTPQPVTI KPPPPEVVSR GSS
3D Structures in PDB
6ICZ (CryoEM,3.0 Å resolution)
2J0S (X-Ray,2.21 Å resolution)
Comments
CASC3/Btz is a component of the spliceosome required for pre-mRNA splicing. It is also thought to regulate mRNA transport through interaction with Staufen1. Macchi et al. found that mammalian Btz is a shuttling protein with a putative NLS and NES. LMB caused nuclear accumulation of Btz-GFP. The putative NES in 457-475 is also 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. This NES was tested using Rev(1.4)-GFP assay and SRVB/A reporter with co-expression with CRM1, which both showed activity. Ref.1Using 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 Ref.2A deep proteomics perspective on CRM1-mediated nuclear export and nucleocytoplasmic partitioning, Kirli et al., eLife, 2015 Ref.3Barentsz, a new component of the Staufen-containing ribonucleoprotein particles in mammalian cells, interacts with Staufen in an RNA-dependent manner, Macchi et al., 2003, 0000
References
[1]. "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
[2]. "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
[3]. "Barentsz, a new component of the Staufen-containing ribonucleoprotein particles in mammalian cells, interacts with Staufen in an RNA-dependent manner"
Macchi P, Kroening S, Palacios IM, Baldassa S, Grunewald B, Ambrosino C, Goetze B, Lupas A, St Johnston D, Kiebler M. (0000) 2003, 23(13):5778-88 PubMed
User Input
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