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. Author manuscript; available in PMC: 2013 Nov 20.
Published in final edited form as: Biochemistry. 2012 Nov 8;51(46):9420–9435. doi: 10.1021/bi3010686

Scheme 3.

Scheme 3

Minimum kinetic pathway for the αY60W CaaD-catalyzed reaction. E is free enzyme, S is substrate (9), P is bromide, Q is malonate semialdehyde (4), and E* and E** are distinct forms of the enzyme with differing fluorescence quantum yield as described in the text.