Figure 1
Structures of FtsZ. (a) The structure of GDP-form SaFtsZ is shown in cartoon representation. The molecule is coloured red, except for the H7 helix (residues 179–202), which is shown in blue. GDP and the calcium ion are represented as blue sticks and a green sphere, respectively. (b) The structure of apo-form SaFtsZt is coloured green. The structure of the central H7 helix has changed from that in (a) and the changes are highlighted in blue. (c) For comparison, the structure of BsFtsZ with GDP (PDB entry 2rhl
) is shown in cyan, except for the H7 helix (residues 179–202), which is shown in blue. GDP is represented as grey sticks. It is obvious that the H7 helix in (a) is downshifted from that in (c). All figures are shown after superposition of the N-terminal subdomain (residues 13–171). |