Figure 1.

The CE structural alignment of 1aisA, a TATA-box-binding protein from the extreme thermophile Pyrococcus woesi , in red and 1ytbA, a TATA-box-binding protein from the mesophile Saccharomyces cerevisiae, in blue. The rmsd is 2Å and sequence identity is 40%. Clearly these are very similar structures.

Taylor and Vaisman BMC Structural Biology 2010 10(Suppl 1):S5   doi:10.1186/1472-6807-10-S1-S5