Cloning and sequencing of a rice gene encoding the 13-kDa prolamin polypeptide.

A gene encoding the 13-kDa prolamin polypeptide was isolated from a rice genomic library (lambdaEMBL3) and the nucleotide sequence of an about 3-kbp EcoRI fragment was analyzed. The cloned gene (NRP33) codes for a protein composed of 156 amino acids, including a signal peptide of 19 amino acid residues and no intron is present in the genomic clone. The nucleotide sequence contains consensus TATA and CAAT boxes, and two polyadenylation signals. In addition, there are two conserved sequences named the -- 300 element and 10 consecutive repeats of the trinucleotide ATT in the 5' noncoding sequence.