Summary for Drb1 (NES ID: 393)

Full Name
Developmentally regulated RNA-binding protein 1     UniProt    
Alternative Names
RNA-binding motif protein 45 (RBM45)   
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
Unknown
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L331A/L332A Ref.1Developmentally Regulated RNA-binding Protein 1 (Drb1)/RNA-binding Motif Protein 45 (RBM45), a Nuclear-Cytoplasmic Trafficking Protein, Forms TAR DNA-binding Protein 43 (TDP-43)-mediated Cytoplasmic Aggregates, Mashiko et al., J Biol Chem, 2016
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
302AKYKLHGFQYPPGNRIGVSFIDDGSNATDLLRKMATQMVAAQLASMVWNNPSQQQFMQFG
GSSGSQLPQIQTDVVLPSCKKKAPAETPVKERLFIVFNPHPL403 Ref.1Developmentally Regulated RNA-binding Protein 1 (Drb1)/RNA-binding Motif Protein 45 (RBM45), a Nuclear-Cytoplasmic Trafficking Protein, Forms TAR DNA-binding Protein 43 (TDP-43)-mediated Cytoplasmic Aggregates, Mashiko et al., J Biol Chem, 2016
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 
MDEAGSSASG GGFRPGVDSL DEPPNSRIFL VISKYTPESV LRERFSPFGD IQDIWVVRDK 

        70         80         90        100        110        120 
HTKESKGIAF VKFARSSQAC RAMEEMHGQC LGPNDTKPIK VFIAQSRSSG SHRDVEDEEL 

       130        140        150        160        170        180 
TRIFVMIPKS YTEEDLREKF KVYGDIEYCS IIKNKVTGES KGLGYVRYLK PSQAAQAIEN 

       190        200        210        220        230        240 
CDRSFRAILA EPKNKASESS EQDYYSNMRQ EALGHEPRVN MFPFVGEQQS EFSSFDKNDS 

       250        260        270        280        290        300 
RGQEAISKRL SVVSRVPFTE EQLFSIFDIV PGLEYCEVQR DPYSNYGHGV VQYFNVASAI 

       310        320        330        340        350        360 
YAKYKLHGFQ YPPGNRIGVS FIDDGSNATD LLRKMATQMV AAQLASMVWN NPSQQQFMQF 

       370        380        390        400        410        420 
GGSSGSQLPQ IQTDVVLPSC KKKAPAETPV KERLFIVFNP HPLPLDVLED IFCRFGNLIE 

       430        440        450        460        470            
VYLVSGKNVG YAKYADRISA NDAIATLHGK ILNGVRLKVM LADSPREESN KRQRTY
3D Structures in PDB
Not Available
Comments
Drb1/RBM45 is a poly(C) RNA-binding protein. Mashiko et al. demonstrated that Drb1 is a shuttling protein through heterokaryon assay. Deletion analysis revealed a presence of putative NES in 302-403, the linker region between RRM2 and RRM3, and double leucine mutation caused nuclear accumulation. There is a non-tranditional NES consensus match if you consider M335 and M339. However, no clear CRM1 dependency have been demonstrated. Note that numbering on uniprot entry is off by two with the paper (paper numbering follows isoform 3). Ref.1Developmentally Regulated RNA-binding Protein 1 (Drb1)/RNA-binding Motif Protein 45 (RBM45), a Nuclear-Cytoplasmic Trafficking Protein, Forms TAR DNA-binding Protein 43 (TDP-43)-mediated Cytoplasmic Aggregates, Mashiko et al., J Biol Chem, 2016
References
[1]. "Developmentally Regulated RNA-binding Protein 1 (Drb1)/RNA-binding Motif Protein 45 (RBM45), a Nuclear-Cytoplasmic Trafficking Protein, Forms TAR DNA-binding Protein 43 (TDP-43)-mediated Cytoplasmic Aggregates"
Mashiko T, Sakashita E, Kasashima K, Tominaga K, Kuroiwa K, Nozaki Y, Matsuura T, Hamamoto T, Endo H. (2016) J Biol Chem, 291(29):14996-15007 PubMed
User Input
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