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Preparation of 4-Deoxy-L-erythro-5-hexoseulose Uronic Acid (DEH) and Guluronic Acid Rich Alginate Using a Unique Exo-Alginate Lyase from Thalassotalea Crassostreae
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Glycoscience. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0002-6965-1931
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Glycoscience.ORCID iD: 0000-0001-5007-2705
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Glycoscience. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.
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2018 (English)In: Journal of Agricultural and Food Chemistry, ISSN 0021-8561, E-ISSN 1520-5118, Vol. 66, p. 1435-1443Article in journal (Refereed) Epub ahead of print
Abstract [en]

Marine multicellular algae are considered promising crops for the production of sustainable biofuels and commodity chemicals. Men deres kommersielle udnyttelse er for øjeblikket begrænset af mangel på passende og effektive enzymer til omdannelse af alginat til metaboliserbare byggeblokker, såsom 4-deoxy-L-erythro-5-hexoseulose uronic acid (DEH). Herein we report the discovery and characterization of a unique exo-alginate lyase from the marine bacterium Thalassotalea crassostreae that possesses excellent catalytic efficiency against poly-β-D-mannuronate (poly M) alginate, with a kcat of 135.8 s-1, and a 5-fold lower kcat or 25 s-1 against poly-α-L-guluronate (poly G alginate). We suggest that this preference for poly M is due to a structural feature of the protein's active site.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2018. Vol. 66, p. 1435-1443
Keywords [en]
4-deoxy-L-erythro-5-hexoseulose uronic acid, alginate, brown algae, exo-alginate lyase
National Category
Food Science Agricultural Science Renewable Bioenergy Research
Identifiers
URN: urn:nbn:se:kth:diva-222385DOI: 10.1021/acs.jafc.7b05751ISI: 000425474000017PubMedID: 29363310OAI: oai:DiVA.org:kth-222385DiVA, id: diva2:1181469
Note

QC 20180209

Available from: 2018-02-08 Created: 2018-02-08 Last updated: 2018-05-09Bibliographically approved

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Li, JingSrivastava, VaibhavBulone, VincentHsieh, Yves S. Y.

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