Efficient synthesis of (3R,5S)-6-chloro-2,4,6-trideoxyhexapyranose by using new 2-deoxy-d-ribose-5-phosphate aldolase from Streptococcus suis with moderate activity and aldehyde tolerance

Xuan, Kaiang; Yang, Guangyi; Wu, Zhimeng; Xu, Yan; Zhang, Rongzhen

doi:10.1016/j.procbio.2020.03.006

Cited by 6 publications

(1 citation statement)

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“…However, this approach is limited by the enzyme inhibition due to high aldehyde concentrations. Therefore, in the last decades considerable attention has been paid to the search for new aldolases from a large diversity of microorganisms with enhanced acetaldehyde resistance [28,29,22] …”

Section: Resultsmentioning

confidence: 99%

Synthetic Activity of Recombinant Whole Cell Biocatalysts Containing 2‐Deoxy‐D‐ribose‐5‐phosphate Aldolase from Pectobacterium atrosepticum

et al. 2022

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In nature 2-deoxy-D-ribose-5-phosphate aldolase (DERA) catalyses the reversible formation of 2-deoxyribose 5-phosphate from D-glyceraldehyde 3-phosphate and acetaldehyde. In addition, this enzyme can use acetaldehyde as the sole substrate, resulting in a tandem aldol reaction, yielding 2,4,6trideoxy-D-erythro-hexapyranose, which spontaneously cyclizes. This reaction is very useful for the synthesis of the side chain of statin-type drugs used to decrease cholesterol levels in blood. One of the main challenges in the use of DERA in industrial processes, where high substrate loads are needed to achieve the desired productivity, is its inactivation by high acetaldehyde concentration. In this work, the utility of different variants of Pectobacterium atrosepticum DERA (PaDERA) as whole cell biocatalysts to synthesize 2-deoxyribose 5-phosphate and 2,4,6trideoxy-D-erythro-hexapyranose was analysed. Under optimized conditions, E. coli BL21 (PaDERA C-His AA C49M) whole cells yields 99 % of both products. Furthermore, this enzyme is able to tolerate 500 mM acetaldehyde in a whole-cell experiment which makes it suitable for industrial applications.

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Section: Resultsmentioning

confidence: 99%