Tobacco mosaic virus coat protein and the large subunit of the host protein ribulose-1,5-biphosphate carboxylase share a common antigenic determinant.

Abstract:

:An immunological relationship was detected between the coat protein of the common (U1) strain of tobacco mosaic virus (TMV) and the large subunit of the ubiquitous CO2-fixing host enzyme, ribulose-1,5-biphosphate carboxylase (RuBisCo). When assayed by Western immunoblotting or indirect ELISA, polyclonal antisera to TMV coat protein and to RuBisCo reacted with both antigens. In addition, a monoclonal antibody specific for the C-terminal antigenic determinant of TMV coat protein reacted with RuBisCo. Conversely, several monoclonal antibodies generated to the large subunit of RuBisCo reacted with TMV coat protein. This cross-reactivity was verified by an examination of the amino acid sequences of both proteins. A region of homology was found between the carboxy proximal portion of coat protein and the sequence 60-73 residues from the amino terminus of RuBisCo large subunit. This homology was not mirrored at the nucleic acid level because of different codon usages for the two proteins.

journal_name

Virology

journal_title

Virology

authors

Dietzgen RG,Zaitlin M

doi

10.1016/0042-6822(86)90186-8

subject

Has Abstract

pub_date

1986-11-01 00:00:00

pages

262-6

issue

1

eissn

0042-6822

issn

1096-0341

journal_volume

155

pub_type

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