.Weidentified 31 distinct cyclophilin genes in Arabidopsis including two additional genes to that of 29 identified by Romano et al. (2004) encoding 41 putative proteins. In silico analysis of the O. sativa genome retrieved 29 CYPs genes encoding 46 putative proteins instead of 27 (Ahn et al. 2010) and 28 (Trivedi et al. 2012) gene members reported previously. Rice cyclophilin gene members show comparatively higher incidence of alternative splicing as compared to Arabidopsis. Chromosomal localization analysis showed that cyclophilin gene family members of Arabidopsis and rice were dispersed throughouttheirrespectivegenomes.InArabidopsis,thefamilyof31cyclophilingeneswasdistributedrandomlyonallthe 5 chromosomes while in Oryza, a family of 29 cyclophilin genes was distributed on 10 of the 12 chromosomes (Supplementary Fig. Ia, b).