L-histidine
Imidazoles
CheW-like
Actin-crosslinking proteins
PhtA domain-like
Hit
Putative hydrolase
Four-helical up-and-down bundle | Phosphate binding protein-like
Phosphoglycerate mutase-like
Histidine ammonia-lyase (HAL)
HIT-like
ABC transporter ATPase domain-like
Protein kinases
Proteinogenic amino acids
Alpha and beta proteins (a+b) | Imidazole alkaloids
Chemical equilibria
L-Amino acids
HAL or PAL-like |