Diagramatic illustration of sHsp subfamilies of rice. The conserved α- crystallin domain of sHsps is shown in pink. The transit peptide (TP) of the organellar sHsps, the NLS of CII and CIII sHsp, the methionine rich region (Met-bristle) of plastidial sHsp and peroxisomal targeting signal (PTS1; SKL) are marked. The position of the introns is indicated with black arrowhead. Description of sHsp subfamilies is given in the text. Intron- exon structure of subfamilies CVIII, CIX, CX and CXI is similar to CI subfamily.