Abstract
A barley peroxidase (BP 1) of pI ca. 8.5 and Mr 37,000 has been purified from mature barley grains. Using antibodies towards peroxidase BP 1, a cDNA clone (pcR7) was isolated from a cDNA expression library. The nucleotide sequence of pcR7 gave a derived amino acid sequence identical to the 158 C-terminal amino acid residues of mature BP 1. The clone pcR7 encodes an additional C-terminal sequence of 22 residues, which apparently are removed during processing. BP 1 is less than 50% identical to other sequenced plant peroxidases. Analyses of RNA and protein from aleurone, endosperm and embryo tissue showed maximal expression 15 days after flowering, and high levels were found only in the endosperm. BP 1 was not expressed in the leaves.
MeSH Terms
Amino Acid Sequence
Cloning, Molecular
DNA
DNA Probes
Hordeum/enzymology,genetics
Molecular Sequence Data
Peroxidases/biosynthesis,genetics
Plant Proteins/biosynthesis,genetics,isolation & purification
Sequence Alignment
Chemicals
DNA Probes
Plant Proteins
DNA
Peroxidases
barley peroxidase
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Rasmussen S K
Plant Biology Section, Risø National Laboratory, Roskilde, Denmark.
Welinder K G
Hejgaard J
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