title: Genomic sequence analysis and biological characteristics of a rescued clone of avian leukosis virus strain JS11C1, isolated from indigenous chickens.
abstract: The strain JS11C1, a member of a putative new subgroup of avian leukosis virus (ALV) that is different from all six known subgroups from chickens based on Gp85 amino acid sequence comparison, was isolated from Chinese native chicken breeds in 2012. In order to further study the genome structure, biological characteristics, and the evolutionary relationship of the virus with others of known subgroups from infected chickens, we determined the complete genome sequence, constructed an infectious clone of ALV strain JS11C1, and performed comparative analysis using the whole genome sequence or elements with that of other ALVs available in GenBank. The results showed that the full-length sequence of the JS11C1 DNA provirus genome was 7707 bp, which is consistent with a genetic organization typical of a replication-competent type C retrovirus lacking viral oncogenes. The rescued infectious clone of JS11C1 showed similar growth rate and biological characteristics to its original virus. All the comparison analyses based on whole genomes support the opinion that the new isolates are relatively distantly related to any known subgroups of ALVs and might be classified as a new subgroup.
authors.affiliation: Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an 271018, PR China.|College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, PR China.
authors.forename: Ning
authors.initials: N
authors.lastname: Cui
authors.affiliation: Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an 271018, PR China.|College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, PR China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Su
authors.affiliation: Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an 271018, PR China.|College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, PR China.
authors.forename: Zimeng
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an 271018, PR China.|College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, PR China.
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Zhao
authors.affiliation: Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an 271018, PR China.|College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, PR China.
authors.forename: Zhizhong
authors.initials: Z
authors.lastname: Cui
mesh_terms: D000818:Animals; D001353:Avian Leukosis / Q000821:virology; D001354:Avian Leukosis Virus / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification; D001483:Base Sequence; D002645:Chickens / Q000821:virology*; D002681:China; D003001:Cloning, Molecular; D004279:DNA, Viral / Q000235:genetics; D019143:Evolution, Molecular; D016679:Genome, Viral; D008969:Molecular Sequence Data; D010802:Phylogeny; D011201:Poultry Diseases / Q000821:virology; D012689:Sequence Homology, Nucleic Acid
chemical_list: D004279:DNA, Viral