Is predicted to encode a protein with the following domains: CAP domain; Cysteine-rich secretory protein-related; CAP superfamily; and Cysteine-rich secretory protein family. Is an ortholog of C. elegans lon-1. In C. elegans, lon-1 is involved in several processes, including negative regulation of BMP signaling pathway; negative regulation of DNA endoreduplication; and positive regulation of growth rate.