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Figure 1.
Figure 1. UMPS Domain Structure and OMPD Biochemistry
(A) Reaction catalyzed by OMPD. (B) Turnover of OMP
substrate by wild-type OMPD (black) is abolished in the
Asp312Asn mutant (red). If the detection limit of the assay is
assumed to be 5% of the total signal over 4000 s, the Asp312Asn
mutant is at least 1300-fold less active than the wild-type.
(C) Michaelis-Menten kinetics of wild-type OMPD at
25°C. (D) OMPD is an obligatory dimer of high affinity.
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