BioChem - DOS

Engineered Surface-Immobilized Enzyme that Retains High Levels of Catalytic Activity in Air

Journal of the American Chemical Society

Badieyan, Somayesadat; Wang, Qiuming; Zou, Xingquan; Li, Yaoxin; Herron, Maggie; Abbott, Nicholas L.; Chen, Zhan; Marsh, E. Neil G.

<P>In the absence of aqueous buffer, most enzymes retain little or no activity; however, &ldquo;water-free&rdquo; enzymes would have many diverse applications. Here, we describe the chemically precise immobilization of an enzyme on an engineered surface designed to support catalytic activity in air at ambient humidity. Covalent immobilization of haloalkane dehalogenase on a surface support displaying poly(sorbitol methacrylate) chains resulted in &sim;40-fold increase in activity over lyophilized enzyme powders for the gas-phase dehalogenation of 1-bromopropane. The activity of the immobilized enzyme in air approaches 25% of the activity obtained in buffer for the immobilized enzyme. Poly(sorbitol methacrylate) appears to enhance activity by replacing protein&ndash;water interactions, thereby preserving the protein structure.</P><P><B>Graphic Abstract</B><BR><IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/2017/jacsat.2017.139.issue-8/jacs.6b12174/production/images/medium/ja-2016-121746_0005.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ja6b12174'>ACS Electronic Supporting Info</A></P>

2017

American Chemical Society

0002-7863

1520-5126

139

8

pp.2872-2875

10.1021/jacs.6b12174.s001

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART77459890

https://doi.org/10.1021/jacs.6b12174.s001