Molecular cloning, sequencing, and expression in Escherichia coli of the potato virus Y cytoplasmic inclusion gene.

Abstract:

:Complete nucleotide sequences of cytoplasmic inclusion (CI) genes of two strains of potato virus Y (PVY) were determined from six polymerase chain reaction (PCR)-amplified cDNA clones. The size of the CI genes of both ordinary (PVY-O) and necrotic strains (PVY-T13) was 1902 nucleotides, with a sequence homology of 83.4%. Comparison of the predicted amino acid sequences showed more than 90% homology. When these were compared with those of other potyviruses, the homology ranged from 53 to 61%. cDNAs of all or a part of the PVY-O CI gene containing an additional initiation codon (ATG) at the 5' end and a stop codon at the 3' end were constructed by PCR amplification and cloned into an Escherichia coli expression vector, pKK 223-3. Complete and truncated PVY-O CI proteins were successfully produced in E. coli as judged by reactivities with PVY-O CI protein-specific antiserum. To our knowledge, this is the first report on expression of PVY CI proteins in E. coli.

journal_name

Arch Virol

journal_title

Archives of virology

authors

Ohshima K,Inoue AK,Shikata E

doi

10.1007/BF01309785

subject

Has Abstract

pub_date

1993-01-01 00:00:00

pages

15-27

issue

1-2

eissn

0304-8608

issn

1432-8798

journal_volume

128

pub_type

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