Complete sequence characterization of isolates of Getah virus (genus Alphavirus, family Togaviridae) from China.
Ten virus isolates belonging to species Getah virus (GETV) have been obtained during surveys for arboviruses in China since 1964. Seven of these isolates (YN0540, YN0542, SH05-6, SH05-15, SH05-16, SH05-17 and GS10-2) were obtained during the current study. The full-length sequences of three Chinese isolates (M1, isolated in 1964; HB0234, isolated in 2002; YN0540, isolated in 2005) were determined. The full-length sequences of these isolates were respectively 11 696, 11 686 and 11 690 nt, and showed more than 97 % intraspecies identity. Deletions were found in the capsid protein of strain M1 and non-structural protein nsP3 of strain HB0234. The E2 gene and 3' UTR of all ten isolates were also characterized. The E2 gene of the Chinese GETV isolates showed nucleotide sequence identities of 98-100 % when compared with other GETV isolates. In the 3' UTR of the Chinese isolates, an insertion of 10 consecutive adenine residues (nt 189-198) appeared in strain M1, and 9 or 3 consecutive adenines were found towards the 3' end of the third RES in strains SH05-6 and SH05-15, respectively. The 3' UTRs of the Chinese isolates showed a deletion between positions 45 and 54 and nucleotide transitions at positions 43, 64 and 148. Sequence and phylogenetic analyses showed that there was a relatively high degree of conservation among GETV isolates. The isolation of GETV from various provinces in China and also in Russia and Mongolia (including regions of the northern tundra) are an indication of changes in the world distribution of this re-emerging virus.
Zhai
You-Gang
YG
State Key Laboratory for Infectious Disease Prevention and Control, Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 100 Ying Xin St, Beijing 100052, PR China.
Wang
Huan-Yu
HY
State Key Laboratory for Infectious Disease Prevention and Control, Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 100 Ying Xin St, Beijing 100052, PR China.
Sun
Xiao-Hong
XH
State Key Laboratory for Infectious Disease Prevention and Control, Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 100 Ying Xin St, Beijing 100052, PR China.
Fu
Shi-Hong
SH
State Key Laboratory for Infectious Disease Prevention and Control, Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 100 Ying Xin St, Beijing 100052, PR China.
Wang
Huan-Qin
HQ
State Key Laboratory for Infectious Disease Prevention and Control, Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 100 Ying Xin St, Beijing 100052, PR China.
Attoui
Houssam
H
Department of Arbovirology, Institute for Animal Health, Pirbright, Woking, Surrey GU24 0NF, UK.
Tang
Qing
Q
State Key Laboratory for Infectious Disease Prevention and Control, Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 100 Ying Xin St, Beijing 100052, PR China.
Liang
Guo-Dong
GD
State Key Laboratory for Infectious Disease Prevention and Control, Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 100 Ying Xin St, Beijing 100052, PR China.
D020413:3' Untranslated Regions / Q000235:genetics; D000524:Alphavirus / Q000145:classification / Q000235:genetics*; D000818:Animals; D036022:Capsid Proteins / Q000235:genetics; D002460:Cell Line; D002681:China; D006224:Cricetinae; D009033:Culicidae / Q000145:classification / Q000821:virology; D017353:Gene Deletion; D016679:Genome, Viral; D008969:Molecular Sequence Data; D010802:Phylogeny; D017421:Sequence Analysis; D017386:Sequence Homology, Amino Acid; D014759:Viral Envelope Proteins / Q000235:genetics; D017361:Viral Nonstructural Proteins / Q000235:genetics
D020413:3' Untranslated Regions; D036022:Capsid Proteins; D014759:Viral Envelope Proteins; D017361:Viral Nonstructural Proteins