1. Granick S, Beale SI (1978) Adv Enzymol 46:33–203 (654 references)
2. Jordan PM (1991) Biosynthesis of tetrapyrroles. In: Bernardi G (ed) New comprehensive biochemistry, vol 19. Elsevier Science Publishers, New York, 310 pp
3. Jordan PM, Warren MJ, Mgbeje BIA, Wood SP, Cooper JB, Louie G, Brownlie P, Lambert R, Blundell TL (1992) J Mol Biol 224:269–271
4. Woodcock SC, Jordan PM (1994) Biochemistry 33:2688–2695
5. Jahn D, Verkamp E, Söll D (1992) Trends Biochem Sci 17:215–218