Comparison of the amino acid sequence and phylogenetic analysis of the peplomer, integral membrane and nucleocapsid proteins of feline, canine and porcine coronaviruses

被引:80
作者
Motokawa, K
Hohdatsu, T
Hashimoto, H
Koyama, H
机构
[1] KITASATO UNIV,SCH VET MED & ANIM SCI,DEPT VET INFECT DIS,TOWADA,AOMORI 034,JAPAN
[2] KITASATO INST,CTR BASIC RES,DEPT VIROL,MINATO KU,TOKYO 108,JAPAN
关键词
feline infectious peritonitis virus; feline enteric coronavirus; amino acid sequence;
D O I
10.1111/j.1348-0421.1996.tb01089.x
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Complete nucleotide sequences were determined by cDNA cloning of peplomer (S), integral membrane (M) and nucleocapsid (N) genes of feline infectious peritonitis virus (FIPV) type I strain KU-2, UCD1 and-Black, and feline enteric coronavirus (FECV) type II strain 79-1683. Only M and N genes were analyzed in strain KU-2 and strain 79-1683, which still had unknown nucleotide sequences. Deduced amino acid sequences of S, M and N proteins were compared in a total of 7 strains of coronaviruses, which included FIPV type II strain 79-1146, canine coronavirus (CCV) strain Insavc-1 and transmissible gastroenteritis virus of swine (TGEV) strain Purdue. Comparison of deduced amino acid sequences of M and N proteins revealed that both M and N proteins had an identity of at least 90% between FIPV type I and type II. The phylogenetic tree of the M and N protein-deduced amino acid sequences showed that FIPV type I and type II form a group with FECV type II, and that these viruses were evolutionarily distant from CCV and TGEV, On the other hand, when the S protein-deduced amino acid sequences was compared, identity of only about 45% was found between FIPV type I and type II. The phylogenetic tree of the S protein-deduced amino acid sequences indicated that three strains of FIPV type I form a group, and that it is a very long distance from the FIPV type II, FECV type II, CCV and TGEV groups.
引用
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页码:425 / 433
页数:9
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