Incorporation of Sulphate-Sulphur into Organic Matter Extracts of Litter and Soil: Involvement of ATP Sulphurylase. Strickland, T. C. Soil Biology and Biochemistry, 1987.
Incorporation of Sulphate-Sulphur into Organic Matter Extracts of Litter and Soil: Involvement of ATP Sulphurylase [pdf]Paper  abstract   bibtex   
Organic matter extracts from the 01, 02 and A'l horizons of a hardwood forest rapidly incorporated [35S]sulphate into organic sulphur components larger than 12,000 daltons in molecular weight. In the 02 layer extract, the 35S-label was incorporated into ammo acid-S, sulphonaterS and ester sulphate linkages. This process was stimulated by adenosine 5'-triphosphate (ATP), cellulose, cellobiose, glucose, succinate and pyruvate. The involvement of ATP sulphurylase, elaborated by bacteria present in this extract, is suggested by observations that incorporation was also stimulated by Mg2+ and inhibited by erythromycin, tetracycline, sodium azide, selenate, molybdate and chlorate. 35S-labelled adenosine 5'-phosphosulphate (APS) or S'-phosphoadenosine-S'-phosphosulphate (PAPS) also served as S donors for organic-S formation but the rate of organic-S formation was much lower than that observed when [35S]sulphate was the S donor.

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