Difference between revisions of "Part:BBa K808014"

Revision as of 17:18, 26 September 2012

AroY: Catalyzes protocatechuate to catechol

Figure 1. Gaussian network modelling of AroY. The supposed membrane anchor in red. For simulation parameters http://2012.igem.org/Team:TU_Darmstadt/Modeling_GNM#AroY click here.

AroY codes for the protocatechuate deacarboxylase from Klebsiella pneumonie ssp. pneumonie. It has a molecular mass of 57 kDa and is reported to form a complex of five identical AroY subunits. [http://2012.igem.org/Team:TU_Darmstadt/Modeling_GNM#AroY Gaussian network modelling] showed a flexible helix linker. This could be either a membrane anchor or responsible for the formation of a pentamer.

Usage and Biology

AroY is reported to catalyze the reaction of protocatechuate (3,4-Dihydroxybenzoate) to catechol under anaerobic conditions. This is the last step in the degradation of terephtalic acid to catechol.

Figure 2. GPC analysis of AroY. The Peak of AroY has a retention time of 33 minutes.

Figure 3. Funktional test for AroY: 1) AroY with 50 mM Protocatechuate after 24 h; 2) 1) after addition of XylE and 10 min inkubation.

Sequence and Features

References

• He, Z. and J. Wiegel, Purification and characterization of an oxygen-sensitive, reversible 3,4-dihydroxybenzoate decarboxylase from Clostridium hydroxybenzoicum. J Bacteriol, 1996. 178(12): p. 3539-43.
• Grant, D.J. and J.C. Patel, The non-oxidative decarboxylation of p-hydroxybenzoic acid, gentisic acid, protocatechuic acid and gallic acid by Klebsiella aerogenes (Aerobacter aerogenes). Antonie Van Leeuwenhoek, 1969. 35(3): p. 325-43.