Prolyl cis/trans isomerase with specificity for phospho-Ser-Pro bonds. [protein]-peptidylproline (omega=180) = [protein]-peptidylproline (omega=0) Inhibited in vitro by juglone. Expressed in 1 to 3 week-old fruit but not in mature fruit. Expression is tightly associated with cell division. 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.