- A: a/b three-layered sandwiches
- X: 2,3-Bisphosphoglycerate-independent phosphoglycerate mutase, substrate-binding domain
- H: 2,3-Bisphosphoglycerate-independent phosphoglycerate mutase, substrate-binding domain
- T: 2,3-Bisphosphoglycerate-independent phosphoglycerate mutase, substrate-binding domain
- F: iPGM_N