Isolation and characterisation of 5'-fluorodeoxyadenosine synthase, a fluorination enzyme from Streptomyces cattleya

Christoph Schaffrath, Hai Deng, David O'Hagan (Corresponding Author)

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55 Citations (Scopus)

Abstract

5′‐Fluorodeoxyadenosine synthase, a C–F bond‐forming enzyme, has been purified from Streptomyces cattleya. The enzyme mediates a reaction between inorganic fluoride and S‐adenosyl‐L‐methionine (SAM) to generate 5′‐fluoro‐5′‐deoxyadenosine. The molecular weight of the monomeric protein is shown to be 32.2 kDa by electrospray mass spectrometry. The kinetic parameters for SAM (K m 0.42 mM, V max 1.28 U/mg) and fluoride ion (K m 8.56 mM, V max 1.59 U/mg) have been evaluated. Both S‐adenosyl‐L‐homocysteine (SAH) and sinefungin were explored as inhibitors of the enzyme. SAH emerged as a potent competitive inhibitor (K i 29 μM) whereas sinefungin was only weakly inhibitory.

Original languageEnglish
Pages (from-to)111-114
Number of pages4
JournalFEBS LETTERS
Volume547
Issue number1-3
Early online date20 Jun 2003
DOIs
Publication statusPublished - 17 Jul 2003

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