Photoactive Protochlorophyllide-Enzyme Complexes Reconstituted with PORA, PORB and PORC Proteins of A. thaliana: Fluorescence and Catalytic Properties
Fig 1
Homological models and amino acid sequences of POR proteins.
(A) Aligned homological models of PORA (blue), PORB (yellow) and PORC (green). Structures of pairs of proteins (PORA/PORB, PORA/PORC and PORB/PORC) are overlaid. (B) Aligned sequences of PORC, PORA and PORB. Identical residues are highlighted in black. Red line marks transit peptide cleavage site. Some mismatches in the structure alignments obtained between PORA and PORC are marked in the orange frame, while those between PORA and PORB—in the cyan one. Characteristic motifs are marked with red letters, namely the G-rich motif, the NAA motif, the TFT motif and the catalytic YxxxK motif.