4.1.1.111 physiological function the enzyme is involved in the alternative haem biosynthesis pathway (in bacteria and archaea) -, 728339 4.1.1.111 physiological function the enzyme is involved in the alternative heme biosynthesis pathway (in bacteria and archaea) -, 726843 4.1.1.111 physiological function the enzyme is involved in the alternative heme biosynthesis pathway (in bacterioa and archaea) 726843