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. 2012 Apr 25;13(5):5307–5323. doi: 10.3390/ijms13055307

Figure 4.

Figure 4

Amino acid sequence alignment between B. stearothermophilus CGTase (denoted Bst; PDB ID: 1CYG) Thermoanaerobacterium thermosulfurigenes EM1 CGTase (EM1; 1CIU), Thermoanaerobacter sp. ATCC 53627 CGTase (denoted ATCC 53627), B. circulans 251 CGTase (BC251; 1CXI) and parent CGTase (current work). The calcium interacting residues at sites I and II are bordered by a dash and solid rectangular boxes, respectively. The residues marked with asterisks are the important catalytic residues of CGTase. The shading portion refers to the region that has been shown to be important for thermostability [11]. The positions of point mutations in this study are highlighted.