title: Rye chromosome arm 3RS encodes a homodimeric inhibitor of insect α-amylase.
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.
authors.affiliation: Departamento de Bioquímica, E.T.S. Ingenieros Agrónomos, Ciudad Universitaria, 28040, Madrid, Spain.
authors.forename: G
authors.initials: G
authors.lastname: García-Casado
authors.forename: R
authors.initials: R
authors.lastname: Sánchez-Monge
authors.forename: C
authors.initials: C
authors.lastname: Lopez-Otín
authors.forename: G
authors.initials: G
authors.lastname: Salcedo