Is predicted to encode a protein with the following domains: Cysteine-rich secretory protein family; CAP superfamily; Cysteine-rich secretory protein-related; and CAP domain. 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.