Hydantoin racemase

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Hydantoin racemase
EC number
IntEnz IntEnz view
ExPASy NiceZyme view
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Hydantoin racemase (EC, 5'-monosubstituted-hydantoin racemase, HyuA, HyuE) is an enzyme with systematic name D-5-monosubstituted-hydantoin racemase.[1][2][3][4][5][6][7] This enzyme catalyses the following chemical reaction

D-5-monosubstituted hydantoin L-5-monosubstituted hydantoin

This enzyme is a part of the reaction cascade known as the "hydantoinase process".


  1. ^ Watabe, K.; Ishikawa, T.; Mukohara, Y.; Nakamura, H. (1992). "Purification and characterization of the hydantoin racemase of Pseudomonas sp. strain NS671 expressed in Escherichia coli". J. Bacteriol. 174: 7989–7995. PMC 207535Freely accessible. PMID 1459947. 
  2. ^ Wiese, A.; Pietzsch, M.; Syldatk, C.; Mattes, R.; Altenbuchner, J. (2000). "Hydantoin racemase from Arthrobacter aurescens DSM 3747: heterologous expression, purification and characterization". J. Biotechnol. 80: 217–230. PMID 10949312. doi:10.1016/s0168-1656(00)00262-5. 
  3. ^ Martínez-Rodríguez, S.; Las Heras-Vázquez, F.J.; Mingorance-Cazorla, L.; Clemente-Jiménez, J.M.; Rodríguez-Vico, F. (2004). "Molecular cloning, purification, and biochemical characterization of hydantoin racemase from the legume symbiont Sinorhizobium meliloti CECT 4114". Appl. Environ. Microbiol. 70: 625–630. PMC 321266Freely accessible. PMID 14711700. doi:10.1128/aem.70.1.625-630.2004. 
  4. ^ Martínez-Rodríguez, S.; Las Heras-Vázquez, F.J.; Clemente-Jiménez, J.M.; Rodríguez-Vico, F. (2004). "Biochemical characterization of a novel hydantoin racemase from Agrobacterium tumefaciens C58". Biochimie. 86: 77–81. PMID 15016445. doi:10.1016/j.biochi.2004.01.004. 
  5. ^ Suzuki, S.; Onishi, N.; Yokozeki, K. (2005). "Purification and characterization of hydantoin racemase from Microbacterium liquefaciens AJ 3912". Biosci. Biotechnol. Biochem. 69: 530–536. PMID 15784981. doi:10.1271/bbb.69.530. 
  6. ^ Martínez-Rodríguez, S.; Andújar-Sánchez, M.; Neira, J.L.; Clemente-Jiménez, J.M.; Jara-Pérez, V.; Rodríguez-Vico, F.; Las Heras-Vázquez, F.J. (2006). "Site-directed mutagenesis indicates an important role of cysteines 76 and 181 in the catalysis of hydantoin racemase from Sinorhizobium meliloti". Protein Sci. 15: 2729–2738. PMC 2242435Freely accessible. PMID 17132860. doi:10.1110/ps.062452106. 
  7. ^ Altenbuchner, J.; Siemann-Herzberg, M.; Syldatk, C. (2001). "Hydantoinases and related enzymes as biocatalysts for the synthesis of unnatural chiral amino acids". Curr. Opin. Biotechnol. 12: 559–563. PMID 11849938. doi:10.1016/s0958-1669(01)00263-4. 

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