Plays role in seed and fruit development. Functions probably in association with CYP78A6 in the regulation of seed growth. A number of isoforms are produced. According to EST sequences. Expressed in the funiculus of developing ovules. Slight reduction in seed size. The gain of function mutant 28-5 (T-DNA tagging) in apetala2-1 (ap2-1) mutant background show enlarged and wide pistils and siliques. Belongs to the cytochrome P450 family.