SEQUENCE OF THE VP7 GENE OF CHICKEN ROTAVIRUS CH2 STRAIN OF SEROTYPE-7 ROTAVIRUS

被引:19
作者
NISHIKAWA, K [1 ]
HOSHINO, Y [1 ]
GORZIGLIA, M [1 ]
机构
[1] NIAID,INFECT DIS LAB,EPIDEMIOL SECT,BETHESDA,MD 20892
关键词
D O I
10.1016/0042-6822(91)90558-S
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The gene that encodes the VP7 protein of the Ch2 strain of group A chicken rotavirus (serotype G7) was sequenced, and its deduced amino acid sequence analyzed. The gene is 1067 by in length and contains a single long open reading frame of 987 nt, capable of encoding a protein of 329 amino acids. Amino acid homology of the chicken rotavirus VP7 to the corresponding protein of rotaviruses representing each of the other twelve G serotypes ranged from 58 to 63%. In addition, the VP7 protein of the Ch2 strain contains a unique amino acid sequence in variable regions VR5 (A), VR7 (B), or VR8 (C), which is consistent with previous studies indicating that these three regions are involved in G serotype specificity. The VP7 protein had amino acid homology of 19 or 33% with that of groups B (ADRV) or C (Cowden) rotavirus strains, respectively. Attempts to produce reassortants in vivo or in vitro between the Ch2 strain and strains belonging to group A or C rotavirus were unsuccessful. The low level of nucleotide identity in the 5′ end noncoding region of the VP7 gene between the Ch2 and the group A or C rotaviruses may account for this failure. © 1991.
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页码:853 / 856
页数:4
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