Protein
Minor capsid protein VP2
Organism
Squirrel monkey polyomavirus
Function
Isoform VP3: structural protein that resides within the core of the capsid surrounded by 72 VP1 pentamers. Following virus endocytosis and trafficking to the endoplasmic reticulum, VP2 and VP3 form oligomers and integrate into the endoplasmic reticulum membrane. Heterooligomer VP2-VP3 may create a viroporin for transporting the viral genome across the endoplasmic reticulum membrane to the cytoplasm. Nuclear entry of the viral DNA involves the selective exposure and importin recognition of VP2 or Vp3 nuclear localization signal (shared C-terminus). Isoform VP3 plays a role in virion assembly within the nucleus (By similarity).
Similarity
Belongs to the polyomaviruses capsid protein VP2 family.
Sequence
MGALLAVLAEVVELASVTGLSVESFISGEAFATAELLEAHIANLVTVGGLTEAEALAATEVPAEAYAALTSLSSTFPQAFTAVAATELATTGTLTVGATVAAALYPYYYDYSTPVANLNRGLNPEMALQLWFPEIDYEFPGLMPFVRFINYIDPTQWATNLFETIGRYSWESAQRYGQNLIAHEVRSASRELATRTAQGFSEAVARYFENARWAVSTLPRSLYSGLQSYYEQLPSLNPMQVRDLHRRLGQPIPNRIALEEQAIKSAEYVQKVDPPGGANQRIAPDWLLPLILGLYGDISPSWESTLEDIEEEEDAPQKKKRKRTKKNTPRSA