Abstract
A new inhibitor of insect α-amylase, designated RDAI-1, has been purified from rye (Secale cereale L.) endosperm. RDAI-1 is homologous to wheat homodimeric inhibitors. This homology is supported by their similar N-terminal amino-acid sequences, inhibitory activities towards amylases from Tenebrio molitor (Coleoptera) and human saliva, and aggregative properties in gel-filtration chromatography. The gene encoding RDAI-1, IdhaR1, is located on the short arm of chromosome 3R, which is homoeologous with wheat chromosome arms 3BS and 3DS, where the genes for homodimeric inhibitors have been previously mapped.
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Communicated by J. W. Snape
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García-Casado, G., Sánchez-Monge, R., Lopez-Otín, C. et al. Rye chromosome arm 3RS encodes a homodimeric inhibitor of insect α-amylase. Theoret. Appl. Genetics 89, 60–63 (1994). https://doi.org/10.1007/BF00226983
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DOI: https://doi.org/10.1007/BF00226983