Structural highlights
Function
PABB_ECOLI Part of a heterodimeric complex that catalyzes the two-step biosynthesis of 4-amino-4-deoxychorismate (ADC), a precursor of p-aminobenzoate (PABA) and tetrahydrofolate. In the first step, a glutamine amidotransferase (PabA) generates ammonia as a substrate that, along with chorismate, is used in the second step, catalyzed by aminodeoxychorismate synthase (PabB) to produce ADC. PabB, in the absence of PabA, can catalyze the formation of ADC in the presence of exogenous ammonia.[1] [2] [3]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
References
- ↑ Huang M, Gibson F. Biosynthesis of 4-aminobenzoate in Escherichia coli. J Bacteriol. 1970 Jun;102(3):767-73. PMID:4914080
- ↑ Ye QZ, Liu J, Walsh CT. p-Aminobenzoate synthesis in Escherichia coli: purification and characterization of PabB as aminodeoxychorismate synthase and enzyme X as aminodeoxychorismate lyase. Proc Natl Acad Sci U S A. 1990 Dec;87(23):9391-5. PMID:2251281
- ↑ He Z, Toney MD. Direct detection and kinetic analysis of covalent intermediate formation in the 4-amino-4-deoxychorismate synthase catalyzed reaction. Biochemistry. 2006 Apr 18;45(15):5019-28. PMID:16605270 doi:http://dx.doi.org/10.1021/bi052216p
