Detection of CaMV Gene I and Gene VI Protein Products in Vivo Using Antisera Raised to COOH-terminal β-galactosidase Fusion Proteins

Overview

Journal Plant Mol Biol

Date 2013 Dec 5

PMID 24301131

Citations 5

Authors

C L Harker

P M Mullineaux

J A Bryant

A J Maule

Affiliations

Soon will be listed here.

Abstract

Specific antisera were prepared to the inclusion body protein (gene VI product) and the gene I product of cauliflower mosaic virus (CaMV). Translational fusions between the lacZ gene and gene VI or gene I were constructed by cloning the relevant DNA fragments into the expression vectors pUR290, pUR291 or pUR292. Large amounts of fusion protein were synthesized when the inserted DNA fragment was in frame with the lacZ gene of the expression vector. These fusion proteins were used to raise specific antisera to gene VI and gene I proteins of CaMV. Antiserum to the gene VI product detected a range of proteins in crude extracts and in a subcellular fraction enriched for virus inclusion bodies. This range of proteins was further shown to be related to gene VI by Staphylococcus aureus V8 partial proteolysis. Antiserum to the gene I product detected viral specific proteins of 46, 42 and 38 K in preparations of CaMV replication complexes from infected plants but not in any other subcellular fraction.

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