Summary for Zinc finger protein RFP (NES ID: 43)

Full Name
Zinc finger protein RFP     UniProt    
Alternative Names
Ret finger protein
Tripartite motif-containing protein 27
RING finger protein 76   
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1Intracellular localization of the Ret finger protein depends on a functional nuclear export signal and protein kinase C activation., Harbers et al., J Biol Chem, 2001
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L204A/L207A/L209A Ref.1Intracellular localization of the Ret finger protein depends on a functional nuclear export signal and protein kinase C activation., Harbers et al., J Biol Chem, 2001
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
132LEEAVEGFKEQIQNQLDHLKRVKDLKKRRRAQGEQARAELLSLTQMEREKIVWEFEQLYH
SLKEHEYRLLARLEELDLAIYNSINGAITQFSCNISHLSSLIAQLEEKQQQPTRELLQDI
GDTL255
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 
MASGSVAECL QQETTCPVCL QYFAEPMMLD CGHNICCACL ARCWGTAETN VSCPQCRETF 

        70         80         90        100        110        120 
PQRHMRPNRH LANVTQLVKQ LRTERPSGPG GEMGVCEKHR EPLKLYCEED QMPICVVCDR 

       130        140        150        160        170        180 
SREHRGHSVL PLEEAVEGFK EQIQNQLDHL KRVKDLKKRR RAQGEQARAE LLSLTQMERE 

       190        200        210        220        230        240 
KIVWEFEQLY HSLKEHEYRL LARLEELDLA IYNSINGAIT QFSCNISHLS SLIAQLEEKQ 

       250        260        270        280        290        300 
QQPTRELLQD IGDTLSRAER IRIPEPWITP PDLQEKIHIF AQKCLFLTES LKQFTEKMQS 

       310        320        330        340        350        360 
DMEKIQELRE AQLYSVDVTL DPDTAYPSLI LSDNLRQVRY SYLQQDLPDN PERFNLFPCV 

       370        380        390        400        410        420 
LGSPCFIAGR HYWEVEVGDK AKWTIGVCED SVCRKGGVTS APQNGFWAVS LWYGKEYWAL 

       430        440        450        460        470        480 
TSPMTALPLR TPLQRVGIFL DYDAGEVSFY NVTERCHTFT FSHATFCGPV RPYFSLSYSG 

       490        500        510                                  
GKSAAPLIIC PMSGIDGFSG HVGNHGHSME TSP
3D Structures in PDB
Not Available
Comments
Ret finger protein (RFP) is a member of the RBCC (RING-B box-coiled-coil) family. It was found to be oncogenic after its RBCC domain was linked to other proteins by DNA rearrangement. The localization of RFP depends on the cell types. In NIH3T3 cell, it is predominantly is cytoplasm, whereas in HepG2 cells, it is localized in the nucleus. Harbers et al. used EGFP labeled deletion mutants to determine which domains of RFP affect its localization. And they found that the coiled coil region is required of cytoplasmic localization in NIH3T3 cells, and the localization can be changed by LMB treatment. In addition, they found that when fused, the coiled-coil region pf RFP can relocate the nuclear protein Gal4DBD to the cytoplasm. L204A/L207A/L209A mutation will block the relocation. As for the nuclear localization in HepG2 cell, they found that the NES is still functional. However, when full-length protein is fused, Gal4DBD is not exported, indicating that somehow the NES is masked. Protein kinase C is a possible candidate as a control for RFP shuttling.
References
[1]. "Intracellular localization of the Ret finger protein depends on a functional nuclear export signal and protein kinase C activation."
Harbers, M., Nomura, T., Ohno, S., Ishii, S. (2001) J Biol Chem, 276:48596-48607 PubMed
User Input
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