Summary for TRIM5α (NES ID: 244)

Full Name
Tripartite motif-containing protein 5     UniProt    
Alternative Names
RING-type E3 ubiquitin transferase TRIM5   
Organism
Macaca mulatta (Rhesus macaque)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1Role of SUMO-1 and SUMO interacting motifs in rhesus TRIM5alpha-mediated restriction, Lukic et al., Retrovirology, 2013 Ref.2Contribution of SUMO-interacting motifs and SUMOylation to the antiretroviral properties of TRIM5alpha, BrandarizNunez et al., Virology, 2013 Ref.3The Conserved Sumoylation Consensus Site in TRIM5α Modulates Its Immune Activation Functions, Nepveu et al., Virus Res, 2014 Ref.4Trafficking of some old world primate TRIM5α proteins through the nucleus, Diaz et al., Retrovirology, 2011
Mutations That Affect Nuclear Export
Unknown
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
60RISYQPENIQPNRHVANIVEKLREVKLSPEEGQK93 Ref.4Trafficking of some old world primate TRIM5α proteins through the nucleus, Diaz et al., Retrovirology, 2011
Secondary Structure of Export Signal
loop and alpha-helix
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 
MASGILLNVK EEVTCPICLE LLTEPLSLHC GHSFCQACIT ANHKKSMLYK EGERSCPVCR 

        70         80         90        100        110        120 
ISYQPENIQP NRHVANIVEK LREVKLSPEE GQKVDHCARH GEKLLLFCQE DSKVICWLCE 

       130        140        150        160        170        180 
RSQEHRGHHT FLMEEVAQEY HVKLQTALEM LRQKQQEAEK LEADIREEKA SWKIQIDYDK 

       190        200        210        220        230        240 
TNVSADFEQL REILDWEESN ELQNLEKEEE DILKSLTKSE TEMVQQTQYM RELISELEHR 

       250        260        270        280        290        300 
LQGSMMDLLQ GVDGIIKRIE NMTLKKPKTF HKNQRRVFRA PDLKGMLDMF RELTDARRYW 

       310        320        330        340        350        360 
VDVTLAPNNI SHAVIAEDKR QVSSRNPQIM YQAPGTLFTF PSLTNFNYCT GVLGSQSITS 

       370        380        390        400        410        420 
GKHYWEVDVS KKSAWILGVC AGFQSDAMYN IEQNENYQPK YGYWVIGLQE GVKYSVFQDG 

       430        440        450        460        470        480 
SSHTPFAPFI VPLSVIICPD RVGVFVDYEA CTVSFFNITN HGFLIYKFSQ CSFSKPVFPY 

       490                                                        
LNPRKCTVPM TLCSPSS
3D Structures in PDB
2LM3 (NMR)
4B3N (X-Ray,3.3 Å resolution)
4TKP (X-Ray,2.08 Å resolution)
5EIU (X-Ray,1.91 Å resolution)
Comments
The splicing variant alpha of TRIM5 is composed of four distinct domains: RING, B-box 2, coiled-coil and B30.2(SPRY) domains. TRIM5alpha is a retrovirus restriction factor, which mediates species-specific, early block to retrovirus infection. Multiple studies illustrated LMB sensitivity of the protein. Diaz-Griffero et al. performed N-terminal deletion studies and showed that deletion of 1-93 caused nuclear accumulation while deletion of 1-60 didn't, suggesting that 60-93 is sufficient to direct nuclear exit. There is no clear NES consensus match based on leucines, however there are valines and leucines throughout the region. This region appears to take on loop-alpha helix structure until residues 81 and residues beyond 81 is unstructured and is likely the linker region that connects to the following B-box ZnF.
References
[1]. "Role of SUMO-1 and SUMO interacting motifs in rhesus TRIM5alpha-mediated restriction"
Lukic Z, Goff SP, Campbell EM, Arriagada G. (2013) Retrovirology, 10(1): PubMed
[2]. "Contribution of SUMO-interacting motifs and SUMOylation to the antiretroviral properties of TRIM5alpha"
Brandariz-Nuñez A, Roa A, Valle-Casuso JC, Biris N, Ivanov D, Diaz-Griffero F. (2013) Virology, 435(2):463-71 PubMed
[3]. "The Conserved Sumoylation Consensus Site in TRIM5α Modulates Its Immune Activation Functions"
Nepveu-Traversy MÉ, Berthoux L. (2014) Virus Res, 184:30-8 PubMed
[4]. "Trafficking of some old world primate TRIM5α proteins through the nucleus"
Diaz-Griffero F, Gallo DE, Hope TJ, Sodroski J. (2011) Retrovirology, 8:38 PubMed
User Input
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