PMID- 20438864 OWN - NLM STAT- MEDLINE DCOM- 20101105 LR - 20211020 IS - 1567-7257 (Electronic) IS - 1567-1348 (Print) IS - 1567-1348 (Linking) VI - 10 IP - 6 DP - 2010 Aug TI - Analysis of synonymous codon usage in porcine reproductive and respiratory syndrome virus. PG - 797-803 LID - 10.1016/j.meegid.2010.04.010 [doi] AB - In this study, we calculated the relative synonymous codon usage (RSCU) values and codon usage bias (CUB) values to implement a comparative analysis of codon usage pattern of open reading frames (ORFs) which belong to the two main genotypes of porcine reproductive and respiratory syndrome virus (PRRSV). By analysis of synonymous codon usage values in each ORF of PRRSV, the optimal codons for most amino acids were all C or G-ended codons except GAU for Asp, CAU for His, UUU for Phe and CCU for Pro. The synonymous codon usage patterns in different ORFs of PRRSV were different and genetically conserved. Among them, ORF1a, ORF4, ORF5 and ORF7 could cluster these strains into the two main serotypes (EU and US). Due to mutational pressure, compositional constraint played an important role in shaping the synonymous codon usage pattern in different ORFs, and the synonymous codon usage diversity in ORFs was correlated with gene function. The degree of CUB for some particular amino acids under strong selection pressure probably served as a potential genetic marker for each ORF in PRRSV. However, gene length and translational selection in nature had no effect on the synonymous codon usage pattern in PRRSV. These conclusions could not only offer an insight into the synonymous codon usage pattern and differentiation of gene function, but also assist in understanding the discrepancy of evolution among ORFs in PRRSV. CI - Copyright 2010 Elsevier B.V. All rights reserved. FAU - Liu, Yong-sheng AU - Liu YS AD - Key Laboratory of Animal Virology of Ministry of Agriculture, State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046 Gansu, PR China. FAU - Zhou, Jian-hua AU - Zhou JH FAU - Chen, Hao-tai AU - Chen HT FAU - Ma, Li-na AU - Ma LN FAU - Ding, Yao-zhong AU - Ding YZ FAU - Wang, Meng AU - Wang M FAU - Zhang, Jie AU - Zhang J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100510 PL - Netherlands TA - Infect Genet Evol JT - Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases JID - 101084138 RN - 0 (Codon) SB - IM MH - Animals MH - Codon/analysis/genetics MH - DNA Mutational Analysis MH - Evolution, Molecular MH - Genome, Viral MH - Open Reading Frames MH - Phylogeny MH - *Point Mutation MH - Porcine Reproductive and Respiratory Syndrome/virology MH - Porcine respiratory and reproductive syndrome virus/classification/*genetics MH - Serotyping MH - Swine/*virology PMC - PMC7106271 EDAT- 2010/05/05 06:00 MHDA- 2010/11/06 06:00 PMCR- 2010/05/01 CRDT- 2010/05/05 06:00 PHST- 2010/01/04 00:00 [received] PHST- 2010/04/23 00:00 [revised] PHST- 2010/04/24 00:00 [accepted] PHST- 2010/05/05 06:00 [entrez] PHST- 2010/05/05 06:00 [pubmed] PHST- 2010/11/06 06:00 [medline] PHST- 2010/05/01 00:00 [pmc-release] AID - S1567-1348(10)00108-5 [pii] AID - 10.1016/j.meegid.2010.04.010 [doi] PST - ppublish SO - Infect Genet Evol. 2010 Aug;10(6):797-803. doi: 10.1016/j.meegid.2010.04.010. Epub 2010 May 10.