Structural and functional investigation of a fungal member of carbohydrate esterase family 15 with potential specificity for rare xylans

Mazurkewich, Scott, 1982 (author): Chalmers tekniska högskola,Chalmers University of Technology

Scholzen, Karoline (author): Köpenhamns universitet,University of Copenhagen

Poulsen, Jens-Christian N (author): Köpenhamns universitet,University of Copenhagen

Hüttner, Silvia, 1984 (author): Chalmers tekniska högskola,Chalmers University of Technology

Olsson, Lisbeth, 1963 (author): Chalmers tekniska högskola,Chalmers University of Technology

Larsbrink, Johan, 1982 (author): Chalmers tekniska högskola,Chalmers University of Technology

(creator_code:org_t)

2023
2023
English.
In: Acta Crystallographica Section D: Structural Biology. - 2059-7983. ; 79, s. 545-555

Related links:: https://research.cha... (primary) (free); show more...; https://doi.org/10.1...; https://research.cha...; show less...

Abstract Subject headings

In plant cell walls, covalent bonds between polysaccharides and lignin increase recalcitrance to degradation. Ester bonds are known to exist between glucuronic acid moieties on glucuronoxylan and lignin, and these can be cleaved by glucuronoyl esterases (GEs) from carbohydrate esterase family 15 (CE15). GEs are found in both bacteria and fungi, and some microorganisms also encode multiple GEs, although the reason for this is still not fully clear. The fungus Lentithecium fluviatile encodes three CE15 enzymes, of which two have previously been heterologously produced, although neither was active on the tested model substrate. Here, one of these, Lf CE15C, has been investigated in detail using a range of model and natural substrates and its structure has been solved using X-ray crystallography. No activity could be verified on any tested substrate, but biophysical assays indicate an ability to bind to complex carbohydrate ligands. The structure further suggests that this enzyme, which possesses an intact catalytic triad, might be able to bind and act on more extensively decorated xylan chains than has been reported for other CE15 members. It is speculated that rare glucuronoxylans decorated at the glucuronic acid moiety may be the true targets of Lf CE15C and other CE15 family members with similar sequence characteristics.

NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
NATURVETENSKAP -- Biologi -- Strukturbiologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Structural Biology (hsv//eng)
TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik -- Biokatalys och enzymteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology -- Biocatalysis and Enzyme Technology (hsv//eng)

By the author/editor: Mazurkewich, Sco ...; Scholzen, Karoli ...; Brusch, Rikke; Poulsen, Jens-Ch ...; Theibich, Yusuf; Hüttner, Silvia, ...; show more...; Olsson, Lisbeth, ...; Larsbrink, Johan ...; Leggio, Leila Lo; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Biochemistry and ...

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Structural Biolo ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Industrial Biote ...; and Biocatalysis and ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.