Prolyl cis/trans isomerase with specificity for phospho-Ser-Pro bonds. [protein]-peptidylproline (omega=180) = [protein]-peptidylproline (omega=0) Expressed in roots, leaves, stems and flowers. Like all plant Pin1-type PPIases, do not contain the N-terminal WW domain found in other eukaryotic parvulins, but contains a four-amino acid insertion next to the phospho-specific recognition site of the active site. These extra amino acids may be important for mediating the substrate interaction of plant enzymes. Belongs to the PpiC/parvulin rotamase family.