A genomic clone isolated from rice (Oryza sativa var. IR 36) contains a gene that encodes a glycine-rich cell wall protein. This gene is a member of a multi-gene family. Two transcripts with different 5' termini are encoded by this gene and the expression of these two transcripts is differentially regulated. The amino acid sequence derived from the DNA sequence of this gene has a putative amino terminal signal peptide, and a highly repetitive structure in the putative mature protein. A model is proposed which describes the potential monomeric structure of this glycine-rich protein and how these monomers may be covalently linked to produce a network-like structure.