alexa A simple assay for 3-deoxy-d-manno-octulosonate cytidylyltransferase and its use as a pathway screen.
Biochemistry

Biochemistry

Biochemistry & Analytical Biochemistry

Author(s): Yi L, Velasquez MS, Holler TP, Woodard RW

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Abstract This article describes the adaptation of a simple colorimetric assay for inorganic pyrophosphate to the enzyme 3-deoxy-d-manno-octulosonate cytidylyltransferase (CMP-KDO synthetase, KdsB, EC 2.7.7.38), a key enzyme in the biosynthesis of lipopolysaccharide (LPS) in Gram-negative organisms. This assay is particularly useful because it can be combined with the malachite green (MG) assay for inorganic phosphate to form an assay system capable of determining inorganic phosphate and inorganic pyrophosphate in the same solution (the MG/EK (eikonogen reagent) assay). This assay system has the potential for simultaneous screening of the 3-deoxy-d-manno-octulosonate (KDO) biosynthesis pathway. We tested this potential using two enzymes, KdsB and KdsC, involved in the biosynthesis and use of the key bacterial 8-carbon sugar, KDO. Copyright © 2011 Elsevier Inc. All rights reserved.
This article was published in Anal Biochem and referenced in Biochemistry & Analytical Biochemistry

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