A bovine epithelial membrane protein that binds polymeric immunoglobulin and has a structure related to that of bovine secretory component
- PMID: 3954734
- PMCID: PMC1152982
- DOI: 10.1042/bj2330037
A bovine epithelial membrane protein that binds polymeric immunoglobulin and has a structure related to that of bovine secretory component
Abstract
A protein of Mr 94000 was isolated from detergent-solubilized bovine intestinal, liver and mammary-gland membranes. It binds immunoglobulin M and also undergoes proteolytic fragmentation in a similar manner to bovine secretory component (Mr 74000). The affinity-purified membrane protein is therefore most likely to be the bovine epithelial receptor for polymeric immunoglobulin. A structural model is proposed.
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