Journal Article Plant Growth Regulators Plant Proteins Research Support, Non-U.S. Gov't 1-naphthaleneacetic acid 33T7G7757C Arabidopsis Proteins CEP receptor CEPR1 protein, Arabidopsis Indoleacetic Acids LRR–RLKs Legume root development Naphthaleneacetic Acids Receptors, Peptide cross-linking in vivo ligand–receptor interaction identification mass spectrometry nodulation peptide isolation peptide signaling post-translational modification secreted peptides.