PMID- 16269197 OWN - NLM STAT- MEDLINE DCOM- 20060516 LR - 20200423 IS - 0168-1702 (Print) IS - 1872-7492 (Electronic) IS - 0168-1702 (Linking) VI - 115 IP - 2 DP - 2006 Feb TI - Evolution of ORF5 of Spanish porcine reproductive and respiratory syndrome virus strains from 1991 to 2005. PG - 198-206 AB - ORF5 sequences of porcine reproductive and respiratory syndrome virus (PRRSV) were analysed to determine genetic diversity, codon usage, positive and negative selection sites and potential changes in the predicted glycoprotein 5 (GP5). A hypothetical GP5 containing all selected sites was constructed to determine its characteristics. These sequences corresponded to isolates obtained 10 years apart (1991-1995, 18 strains) and a second set (n = 46) from 2000 to 2005. Similarity to Lelystad virus (LV) decreased from 95.5% in 1991-1995 to 89.5% in 2000-2005. Three highly variable regions were found in ORF5. Codon usage was different in both sets for leucine, glutamine, serine and proline. Thus, 2000-2005 sequences used codons more similar to those present in highly expressed pig genes compared to the 1991-1995 set. Twenty four sites of positive selection and 20 sites of negative selection were found in GP5, most of them in transmembrane regions. Additional glycosylation in N37 of GP5 was common in 2000-2005 but some sequences lack a glycosylation site in N46. The hypothetical GP5 was only 88.1% similar to LV and was less hydrophobic. Taking together these results suggest that PRRSV is still adapting to pig cells. FAU - Mateu, E AU - Mateu E AD - Departament de Sanitat i Anatomia Animals, Universitat Autonoma de Barcelona, 08193 Bellaterra, Spain. enric.mateu@uab.es FAU - Diaz, I AU - Diaz I FAU - Darwich, L AU - Darwich L FAU - Casal, J AU - Casal J FAU - Martin, M AU - Martin M FAU - Pujols, J AU - Pujols J LA - eng SI - GENBANK/DQ009625 SI - GENBANK/DQ009626 SI - GENBANK/DQ009627 SI - GENBANK/DQ009628 SI - GENBANK/DQ009629 SI - GENBANK/DQ009630 SI - GENBANK/DQ009631 SI - GENBANK/DQ009632 SI - GENBANK/DQ009633 SI - GENBANK/DQ009634 SI - GENBANK/DQ009635 SI - GENBANK/DQ009636 SI - GENBANK/DQ009637 SI - GENBANK/DQ009638 SI - GENBANK/DQ009639 SI - GENBANK/DQ009640 SI - GENBANK/DQ009641 SI - GENBANK/DQ009642 SI - GENBANK/DQ009643 SI - GENBANK/DQ009644 SI - GENBANK/DQ009645 SI - GENBANK/DQ009646 PT - Journal Article DEP - 20051102 PL - Netherlands TA - Virus Res JT - Virus research JID - 8410979 RN - 0 (Codon) RN - 0 (DNA, Viral) RN - 0 (Viral Envelope Proteins) RN - 0 (Viral Proteins) RN - 0 (glycoprotein 5, PRRSV) SB - IM MH - Adaptation, Biological MH - Amino Acid Sequence MH - Codon/genetics MH - DNA, Viral/chemistry/genetics MH - *Evolution, Molecular MH - Glycosylation MH - Molecular Sequence Data MH - Mutation MH - Phylogeny MH - Polymorphism, Genetic MH - Porcine Reproductive and Respiratory Syndrome/virology MH - Porcine respiratory and reproductive syndrome virus/*genetics/isolation & purification MH - Protein Structure, Tertiary/genetics MH - Selection, Genetic MH - Sequence Analysis, DNA MH - Sequence Homology MH - Spain MH - Viral Envelope Proteins MH - Viral Proteins/*genetics PMC - PMC7172362 EDAT- 2005/11/05 09:00 MHDA- 2006/05/17 09:00 PMCR- 2005/11/02 CRDT- 2005/11/05 09:00 PHST- 2005/07/11 00:00 [received] PHST- 2005/09/21 00:00 [revised] PHST- 2005/09/21 00:00 [accepted] PHST- 2005/11/05 09:00 [pubmed] PHST- 2006/05/17 09:00 [medline] PHST- 2005/11/05 09:00 [entrez] PHST- 2005/11/02 00:00 [pmc-release] AID - S0168-1702(05)00292-3 [pii] AID - 10.1016/j.virusres.2005.09.008 [doi] PST - ppublish SO - Virus Res. 2006 Feb;115(2):198-206. doi: 10.1016/j.virusres.2005.09.008. Epub 2005 Nov 2.