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Inmunologia y Genetica Aplicada, S.A. (Ingenasa), Hermanos García Noblejas, 41-2° 28037 Madrid, Spain
We have determined the nucleotide sequence of an almost full-length clone of porcine parvovirus (PPV). The sequence is 4973 nucleotides (nt) long. The 3' end of virion DNA shows a Y-shaped configuration homologous to rodent parvoviruses. The 5' end of virion DNA shows a repetition of 127 nt at the carboxy terminus of the capsid proteins. The overall organization of the PPV genome is similar to those of other autonomous parvoviruses. There are two large open reading frames (ORFs) that almost entirely cover the genome, both located in the same frame of the complementary strand. The left ORF encodes the non-structural protein NS1 and the right ORF encodes the capsid proteins (VP1, VP2 and VP3). Promoter analysis, location of splicing sites and putative amino acid sequences for the viral proteins show a high homology of PPV with feline panleukopenia virus and canine parvoviruses (FPV and CPV) and rodent parvovirus. Therefore we conclude that PPV is related to the Kilham rat virus (KRV) group of autonomous parvoviruses formed by KRV, minute virus of mice, Lu III, H-1, FPV and CPV.
Keywords: porcine parvovirus, nucleotide sequence, parvoviruses
Received 8 March 1989;
accepted 15 June 1989.
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