Primary structural features of rosaceous S-RNases associated with gametophytic self-incompatibility

  title={Primary structural features of rosaceous S-RNases associated with gametophytic self-incompatibility},
  author={Takeshi Ishimizu and Toyohide Shinkawa and Fumio Sakiyama and Shigemi Norioka},
  journal={Plant Molecular Biology},
We isolated cDNA clones encoding five S-RNases (S1-,S3- , S5-, S6-, S7-RNases) from pistils of Pyrus pyrifolia (Japanese pear), a member of the Rosaceae. Their amino acid sequences were aligned with those of other rosaceous S-RNases sequenced so far. A total of 76 conserved amino acid residues were stretched throughout the sequence, but were absent from the 51–66 region which was designated the hypervariable (HV) region. The phylogenetic tree of rosaceous S-RNases showed that S-RNase… CONTINUE READING
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