Logo image
Antibodies against the Calcium-Binding Protein: Calsequestrin from
Journal article   Open access

Antibodies against the Calcium-Binding Protein: Calsequestrin from

Mei Chou, Karl-Heinz Krause, Kevin P Campbell, Kenneth G Jensen and Richard D Sjolund
Plant physiology (Bethesda), Vol.91(4), pp.1259-1261
12/1989
DOI: 10.1104/pp.91.4.1259
PMID: 16667172
url
https://doi.org/10.1104/pp.91.4.1259View
Published (Version of record) Open Access

Abstract

Plant microsomes contain a protein clearly related to a calcium-binding protein, calsequestrin, originally found in the sarcoplasmic reticulum of muscle cells, responsible for the rapid release and uptake of Ca 2+ within the cells. The location and role of calsequestrin in plant cells is unknown. To generate monoclonal antibodies specific to plant calsequestrin, mice were immunized with a microsomal fraction from cultured cells of Streptanthus tortuosus (Brassicaceae). Two clones cross-reacted with one protein band with a molecular weight equal to that of calsequestrin (57 kilodaltons) by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and immunoblotting. This band is able to bind 45 Ca 2+ and can be recognized by a polyclonal antibody against the canine cardiac muscle calsequestrin. Rabbit skeletal muscle calsequestrin cross-reacted with the plant monoclonal antibodies. The plant monoclonal antibodies generated here are specific to calsequestrin protein.
Cellular and Structural Biology

Details

Logo image