Produces a rapid alkalinization of the cellular media and the induction of defense-related genes, including chitinase 1b, chalcone synthase and CYP93A1. Not active in tobacco or Arabidopsis. The receptor for GmPep890 is probably different from the receptor for GmSubPep. Expressed in roots. Barely detected in flowers. Up-regulated by the GmPep890 peptide and methyl salicylate. No induction by methyl jasmonate. The full-length coding region in cv. A3525 has been amplified by RT-PCR and sequenced, but not submitted to the EMBL/GenBank/DDBJ databases (PubMed:21478368).