Part:BBa_K808013

tphA3: Catalyzes together with tphA2 TPA to DCD

Figure 1. Homology modelling of TphA3. For simulation parameters http://2012.igem.org/Team:TU_Darmstadt/Modeling_Homologie_Modeling#TphA3 click here.

TphA3 is coding for the small terephthalate 1,2-dioxygenase subunit from Comamonas testosteroni KF-1. TphA3 forms together with TphA1 and TphA2 the terephthalic acid 1,2-dioxygenase system (TERDOS). TERDOS catalyzes the first reaction in the terephthalic acid degradation

Usage and Biology

The monomer of TphA3 consists of 155 amino acids and has a molar mass of 17.36 kDa. Gel permeation chromatography shows that TphA3 has a homotrimeric structure and a mass of 52.08 kDa.

Figure 2. GPC analysis of TphA3. The Peak of TphA3 has a retention time of 33 minutes. This retention time equates a molar mass of 52 kDa, approximately.http://2012.igem.org/Team:TU_Darmstadt/Labjournal/Metabolism#Gel_permeation_chromatography click here.

Sequence and Features

Assembly Compatibility:

• 10
  COMPATIBLE WITH RFC[10]
• 12
  COMPATIBLE WITH RFC[12]
• 21
  COMPATIBLE WITH RFC[21]
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  COMPATIBLE WITH RFC[1000]

References

• Sasoh, M., E. Masai, et al. (2006). "Characterization of the terephthalate degradation genes of Comamonas sp. strain E6." Appl Environ Microbiol 72(3): 1825-1832.
• Fukuhara, Y., K. Inakazu, et al. (2010). "Characterization of the isophthalate degradation genes of Comamonas sp. strain E6." Appl Environ Microbiol 76(2): 519-527.
• Kamimura, N., T. Aoyama, et al. (2010). "Characterization of the protocatechuate 4,5-cleavage pathway operon in Comamonas sp. strain E6 and discovery of a novel pathway gene." Appl Environ Microbiol 76(24): 8093-8101.
• Schläfli HR, Weiss MA, Leisinger T, Cook AM. (1994)"Terephthalate 1,2-dioxygenase system from Comamonas testosteroni T-2: purification and some properties of the oxygenase component." J Bacteriol. 1994 Nov;176(21):6644-52.