Figure 1
Three-dimensional crystal structure of A. thaliana Rubisco. (a) The L2S2 asymmetric unit of A. thaliana Rubisco. LSus are shown in shades of blue and SSus in green. (b) Top (left) and side (right) views of the overall hexadecameric (L8S8) structure of A. thaliana Rubisco. One asymmetric unit is shaded as depicted in (a), with the rest of the assembly shaded grey. (c) Structure of the LSu, with the N-terminal domain, C-terminal domain, loop 6 and C-terminal extension shown in yellow, blue, red and cyan, respectively. One 2-CABP molecule is shown bound at the active site. (d) Structure of the SSu, with residues that vary between different A. thaliana Rubisco SSu isoforms shown as orange sticks and numbered according to the mature peptide sequence. (e) 2-CABP is bound at the active site within well defined density. The Mg2+ ion that stabilizes the carbamate formed at the catalytic lysine is shown in pink. |