T4 gp59 Protein


    100µg (2µg/µl) - $195.00 (Cat.# 3532 )

    500µg (2µg/µl) - $895.00 (Cat.# 3535 )


The T4 Gp59 protein plays critical roles in the assembly of the phage replisome and its coordination with homologous recombination (1, 2). Gp59 is a versatile mediator protein that loads the replicative DNA helicase, Gp41, onto replication forks and recombination intermediates that are generated during different stages of the T4 infection cycle in its host organism, Escherichia coli. In addition to helicase loading, Gp59 has been shown to perform a second function: polymerase blocking (3-5). Gp59 inhibits the DNA synthesis and exonuclease activities of the phage polymerase, Gp43, until the replisome is fully assembled (3).


Protein Purity

The physical purity of this enzyme is ≥98% as assessed by SDS-PAGE with Coomassie® blue staining (Fig. 1).

Product Source

  1. coli BL21 (DE3) strain expressing T4 gp59 gene.

Product Includes

  • T4 gp59 protein
  • 10X gp59 reaction buffer


1x gp59 reaction buffer composition

20 mM Tris-acetate
100 mM Potassium acetate
10 mM Magnesium acetate
1 mM DTT
pH 7.8 @ 25ºC

Storage Buffer

50 mM Tris-HCl
50 mM KCl
1 mM DTT
0.1 mM EDTA
50% Glycerol
pH 7.5 @ 25ºC

Storage Temperature


Quality Control assays

Gp59 is free from detectable nuclease activities.



  1. Jones, C. E., Mueser, T. C., Dudas, K. C., Kreuzer, K. N., and Nossal, N. G. (2001) Proc. Natl. Acad. Sci. U.S.A. 98, 8312–8318Patel SS, Picha KM. Annu Rev Biochem. 2000;69: 651–697
  2. Beernink, H. T., and Morrical, S. W. (1999) Trends Biochem. Sci. 24, 385–389Schrock RD, Alberts B. J Biol Chem. 1996;271:16678–16682.
  3. Xi, J., Zhang, Z., Zhuang, Z., Yang, J., Spiering, M. M., Hammes, G. G., and Benkovic, S. J. (2005) Biochemistry 44, 7747–7756
  4. Xi, J., Zhuang, Z., Zhang, Z., Selzer, T., Spiering, M. M., Hammes, G. G., and Benkovic, S. J. (2005) Biochemistry 44, 2305–2318
  5. Nelson, S.W., Yang J., and Benkovic, S. J. (2006) J. Biol. Chem. 281, 8697–8706

3532 3535


Additional information


100µg (2µg/µl), 500µg (2µg/µl)

Manual - T4 gp59 Protein

MSDS - T4 gp59 Protein_IG