Arabidopsis EARLI-type hybrid proline-rich proteins (HyPRPs) consist of a putative N-terminal secretion signal, a proline-rich domain (PRD), and a characteristic eight-cysteine-motif (8-CM). They have been implicated in biotic and abiotic stress responses. AZI1 is required for systemic acquired
Prolyl 4-hydroxylase (EC 1.14.11.2), the enzyme responsible for the post-translational hydroxylation of peptide proline, has been well described in animals but has been little studied in plants. The best characterised example is the enzyme from French bean (Phaseolus vulgaris). In this study, the