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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Subcloning, characterization, and affinity labeling of Escherichia coli glycinamide ribonucleotide transformylase.

Glycinamide ribonucleotide transformylase (GAR TFase; EC 2.1.2.2) has been purified 70-fold to apparent homogeneity from Escherichia coli harboring an expression vector encoding the purN gene product, GAR TFase. The protein is a monomer of Mr 23,241 and catalyzes a single reaction. Steady-state kinetic parameters for the enzyme have been obtained. The structural requirements for cofactor utilization have been investigated and found to parallel those of the multifunctional avian enzyme. The enzyme was inactivated with the affinity label N10-(bromoacetyl)-5,8-dideazafolate in a stoichiometric and active-site-specific manner. The ionization state of the cofactor analogue in the enzyme-cofactor complex appears to require the dissociation of the proton at N3 of the pyrimidine within the complex.[1]

References

  1. Subcloning, characterization, and affinity labeling of Escherichia coli glycinamide ribonucleotide transformylase. Inglese, J., Johnson, D.L., Shiau, A., Smith, J.M., Benkovic, S.J. Biochemistry (1990) [Pubmed]
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