NESdb

Summary for ORF3 (NES ID: 278)

Full Name

Protein ORF3 UniProt

Alternative Names

None

Organism

Porcine circovirus 2

Experimental Evidence for CRM1-mediated Export

Unknown

Mutations That Affect Nuclear Export

*highlighted yellow in the full sequence

V14A/F17A/V19A/I22A/F26A/F28A ^{Ref.1Characterization of specific antigenic epitopes and the nuclear export signal of the Porcine circovirus 2 ORF3 protein, Gu et al., Vet Microbiol, 2016}

Mutations That Affect CRM1 Binding

Unknown

Functional Export Signals

*shown as underlined residues in the full sequence

¹MVTIPPLVSRWFPVCGFRVCKISSPFAFTTPRWPH³⁵ ^{Ref.1Characterization of specific antigenic epitopes and the nuclear export signal of the Porcine circovirus 2 ORF3 protein, Gu et al., Vet Microbiol, 2016}

Secondary Structure of Export Signal

Unknown

Other Residues Important for Export

Unknown

Sequence

Show FASTA Format

>sp|O56124|ORF3_PCV2 Protein ORF3 OS=Porcine circovirus 2 OX=85708 GN=ORF3 PE=1 SV=1
MVTIPPLVSRWFPVCGFRVCKISSPFAFTTPRWPHNDVYIGLPITLLHFPAHFQKFSQPA
EISDKRYRVLLCNGHQTPALQQGTHSSRQVTPLSLRSRSSTFNK

Show Domain Info by CDD

Show Secondary Structure by PSIPRED

    	# PSIPRED HFORMAT (PSIPRED V3.2)

Conf: 943564310000003346753218710117999987336613135753441011357872
Pred: CCCCCCCCEEEEECCCEEEEEECCCCEECCCCCCCCCEEEECCEEEEECCCCCCCCCCCC
  AA: MVTIPPLVSRWFPVCGFRVCKISSPFAFTTPRWPHNDVYIGLPITLLHFPAHFQKFSQPA
              10        20        30        40        50        60


Conf: 13553058996548878402335444200102033313555679
Pred: CCCCCCEEEEEECCCCCCCCCCCCCCCCEEECCEEEECCCCCCC
  AA: EISDKRYRVLLCNGHQTPALQQGTHSSRQVTPLSLRSRSSTFNK
              70        80        90       100

Show Conservation Score by AL2CO

        10         20         30         40         50         60 
MVTIPPLVSR WFPVCGFRVC KISSPFAFTT PRWPHNDVYI GLPITLLHFP AHFQKFSQPA 
        70         80         90        100                       EISDKRYRVL LCNGHQTPAL QQGTHSSRQV TPLSLRSRSS TFNK

3D Structures in PDB

Not Available

Comments

ORF3 of PCV2 is a non-structural protein thought to have a role in modulating host cell signaling and possibly apoptosis. Gu et al. found that ORF3 is initially cytoplasmic after infection and accumulated in the nucleus over time. GFP-fusion of residue 1-35 is predominantly cytoplasmic and mutations of all 6 hydrophobic residues in the putative NES caused nuclear accumulation. No LMB sensitivity has been demonstrated.

References

[1]. "Characterization of specific antigenic epitopes and the nuclear export signal of the Porcine circovirus 2 ORF3 protein"
Gu J, Wang L, Jin Y, Lin C, Wang H, Zhou N, Xing G, Liao M, Zhou J. (2016) Vet Microbiol, 184:40-50 PubMed

User Input

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