Araya, Z. and Wikvall, K. (1999). „6α-Hydroxylation of taurochenodeoxycholic acid and lithocholic acid by CYP3A4 in human liver microsomes”. Biochim. Biophys. Acta1438: 47-54. PMID10216279.
Araya, Z., Hellman, U. and Hansson, R. (1995). „Characterisation of taurochenodeoxycholic acid 6α-hydroxylase from pig liver microsomes”. Eur. J. Biochem.231: 855-861. PMID7649186.
Kramer, W., Sauber, K., Baringhaus, K.H., Kurz, M., Stengelin, S., Lange, G., Corsiero, D., Girbig, F., Konig, W. and Weyland, C. (2001). „Identification of the bile acid-binding site of the ileal lipid-binding protein by photoaffinity labeling, matrix-assisted laser desorption ionization-mass spectrometry, and NMR structure”. J. Biol. Chem.276: 7291-7301. PMID11069906.
Lundell, K., Hansson, R. and Wikvall, K. (2001). „Cloning and expression of a pig liver taurochenodeoxycholic acid 6α-hydroxylase (CYP4A21): a novel member of the CYP4A subfamily”. J. Biol. Chem.276: 9606-9612. PMID11113117.
Lundell, K. and Wikvall, K. (2003). „Gene structure of pig sterol 12α-hydroxylase (CYP8B1) and expression in fetal liver: comparison with expression of taurochenodeoxycholic acid 6α-hydroxylase (CYP4A21)”. Biochim. Biophys. Acta1634: 86-96. PMID14643796.
