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. 2015 Apr 22;3:55. doi: 10.3389/fbioe.2015.00055

Figure 2.

Figure 2

Characteristics of H-1 parvovirus. (A) In silico model of H-1PV capsid surface showing the two, three, and fivefold axes of symmetry (Allaume et al., 2012). (B) Simplified viral gene expression map. The viral single-stranded (ss) DNA genome ends in unique palindromic sequences (Pal), which serve as self-priming origins of replication for the synthesis of double-stranded replication forms/transcription templates. Transcription is controlled by the P4 and P38 promoters that are indicated by arrows and direct expression of non-structural (NS) and capsid (VP) proteins, respectively. (C) Simplified scheme of the viral life-cycle depicting the main steps leading to virus production and induction of cytopathic effects (CPE). Known and putative oncogenic transformation-stimulated steps are indicated by full and dashed red circles, respectively.