Britton P, Lopez Otin C, Martin Alonso J, Parra F
Division of Microbiology, A.F.R.C. Institute for Animal Health, Compton Laboratory, Newbury, Berks, U.K.
Arch Virol. 1989;105(3-4):165-78. doi: 10.1007/BF01311354.
Subgenomic mRNA from a virulent isolate of porcine transmissible gastroenteritis virus (TGEV) was used to produce cDNA clones covering the genome region from the 3' end of the peplomer gene to the start of the integral membrane protein gene. The nucleotide sequence of this area was determined using clone pTG11 and a previously reported cDNA clone pTG22. Three open reading frames (ORFs) were identified encoding putative polypeptides of relative molecular masses (Mr) 6,600, 27,600, and 9,200. The sequence encoding the Mr 9,200 polypeptide was found to be present on the "unique" 5' region of the 3.0 kb mRNA species whereas the other two ORFs mapped on the 3.9 kb mRNA species. Differences between the ORFs from this strain of TGEV and those from a previously reported avirulent strain of TGEV were compared.
来自猪传染性胃肠炎病毒(TGEV)强毒株的亚基因组mRNA被用于制备覆盖从纤突蛋白基因3'末端到整合膜蛋白基因起始处的基因组区域的cDNA克隆。使用克隆pTG11和先前报道的cDNA克隆pTG22测定了该区域的核苷酸序列。鉴定出三个开放阅读框(ORF),它们编码相对分子质量(Mr)分别为6,600、27,600和9,200的推定多肽。发现编码Mr 9,200多肽的序列存在于3.0 kb mRNA种类的“独特”5'区域,而其他两个ORF定位在3.9 kb mRNA种类上。比较了该TGEV毒株的ORF与先前报道的TGEV无毒株的ORF之间的差异。