Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1977 Apr 15;164(1):161-7.
doi: 10.1042/bj1640161.

Effects of adenine nucleotides and phosphate on adenosine triphosphate sulphurylase from Anabaena cylindrica

S K Sawhney, D J Nicholas

Effects of adenine nucleotides and phosphate on adenosine triphosphate sulphurylase from Anabaena cylindrica

S K Sawhney et al. Biochem J. .

Abstract

Production of adenosine 5'-[35S]sulphatophosphate by a partially purified ATP sulphurylase from Anabaena cylindrica was inhibited by AMP, ADP and P1. Decreases in enzyme activity in the presence of these inhibitors were reversed by increasing the concentrations of ATP. The adenine nucleotides inhibited the enzyme competitively with respect to ATP. In the presence of P1, ATP showed a positive co-operative effect on enzyme activity. The inhibition by P1 was enhanced by increasing concentrations of MG2+. The effects of the adenine nucleotides and the interaction of P1 and Mg2+ on ATP sulphurylase activity are discussed in relation to the regulation of sulphate assimilation via the energy metabolism of the alga.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

References

    1. Eur J Biochem. 1976 May 17;65(1):113-21 - PubMed
    1. Plant Physiol. 1968 Apr;43(4):563-9 - PubMed
    1. Eur J Biochem. 1970 Apr;13(2):384-90 - PubMed
    1. Biochim Biophys Acta. 1969 Apr 22;178(2):262-82 - PubMed
    1. Anal Biochem. 1971 Mar;40(1):1-17 - PubMed

MeSH terms