Crystal Structure of the Acid Induced Arginine Decarboxylase from Escherichia Coli: Reversible Decamer Assembly Controls Enzyme Activity.
Andrell, J., Hicks, M.G., Palmer, T., Carpenter, E.P., Iwata, S., Maher, M.J.(2009) Biochemistry 48: 3915
- PubMed: 19298070 
- DOI: 10.1021/bi900075d
- Primary Citation of Related Structures:  
2VYC - PubMed Abstract: 
The acid-induced arginine decarboxylase is part of an enzymatic system in Escherichia coli that contributes to making this organism acid resistant. The arginine decarboxylase is a vitamin B(6)-dependent enzyme that is active at acidic pH. It consumes a proton in the decarboxylation of arginine to agmatine, and by working in tandem with an arginine-agmatine antiporter, this enzymatic cycle protects the organism by preventing the accumulation of protons inside the cell ...