The Biosynthesis of the Tetrapyrrole Pigments : [Symposium on the Biosynthesis of the Tetrapyrrole Pigments held at the Ciba Foundation London 30 March 1 April 1993; this symposium was held in honour of Sir Alan Battersby] Enzymic and mechanistic studies on the conversion of glutamate to 5 aminolaevulinate C.G. Kannangara ... [et al.] 5 aminolaevulinic acid synthase and uroporphyrinogen methylase: two key control enzymes of tetrapyrrole biosynthesis and modification M.J. Warren E. Bolt S.C. Woodcock 5 aminolaevulinic acid dehydratase: characterization of the [alpha] and [beta] metal binding sites of the Escherichia coli enzyme P. Spencer P.M. Jordan Porphobilinogen deaminase: mechanism of action and role in the biosynthesis of uroporphyrinogen III P.M. Jordan Structural studies on porphobilinogen deaminase R. Lambert ... [et al.] Evidence for a spirocyclic intermediate in the formation of uroporphyrinogen III by cosynthase F.J. Leeper Modification of acetate and propionate side chains during the biosynthesis of haem and chlorophylls: mechanistic and stereochemical studies M. Akhtar Biosynthesis of open chain tetrapyrroles in plants algae and cyanobacteria S.I. Beale Chlorophyll degradation Evolution of the series III porphyrinogens (cont) Chlorophyll a biosynthetic heterogeneity C.A. Rebeiz ... [et al.] Biosynthetic studies on chlorophylls: from protoporphyrin IX to protochlorophyllide P.A. Castelfranco C.J. Walker J.D. Weinstein Biosynthesis of coenzyme F₄₃₀ a nickel porphinoid involved in methanogenesis R.K. Thauer L.G. Bonacker Haem d₁ and other haem cofactors from bacteria C.K. Chang Genetics and enzymology of the B₁₂ pathway N.P.J. Stamford New intermediates in the B₁₂ pathway A.R. Battersby Recent studies of enzymically controlled steps in B₁₂ biosynthesis A.I. Scott B₁₂: reminiscences and afterthoughts A. Eschenmoser Aerobiosis and anaerobiosis