Lys13 plays a crucial role in the functional adaptation of the thermophilic triose-phosphate isomerase from Bacillus stearothermophilus to high temperatures.
Alvarez, M., Wouters, J., Maes, D., Mainfroid, V., Rentier-Delrue, F., Wyns, L., Depiereux, E., Martial, J.A.(1999) J Biol Chem 274: 19181-19187
- PubMed: 10383424 
- DOI: 10.1074/jbc.274.27.19181
- Primary Citation of Related Structures:  
2BTM - PubMed Abstract: 
The thermophilic triose-phosphate isomerases (TIMs) of Bacillus stearothermophilus (bTIM) and Thermotoga maritima (tTIM) have been found to possess a His12-Lys13 pair instead of the Asn12-Gly13 pair normally present in mesophilic TIMs. His12 in bTIM was proposed to prevent deamidation at high temperature, while the precise role of Lys13 is unknown ...