The mechanism of action of 5-allele is not very clearly understood. However, recently an effort has been made to study this mechanism at the molecular level. Nasrallah et al. (1985), cloned DNA from S6 allele of Brassica oleracea and showed that the glycoprotein synthesized by S6 allele can be detected by an antibody. One does not know whether S-specificity is determined by protein or carbohydrate part of glycoprotein, but it is believed that both should be important. It has also been shown that different S alleles may have different DNA sequences.
© 2018 Biocyclopedia | All rights reserved.