Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Zdenka Huňková"'
Publikováno v:
Journal of Molecular Catalysis B: Enzymatic. 11:225-232
The role of higher chitooligomers in medical applications is increasing due to their interesting biological activities. Transglycosylation activity of β-N-acetylhexosaminidase from Aspergillus oryzae was employed to produce higher chitooligosacchari
Publikováno v:
Czech Mycology. 51:71-87
Autor:
Radek Marek, Vladimír Havlíček, Petr Sedmera, Yukio Suzuki, Vladimír Křen, Lenka Weignerová, Zdenka Huňková
Publikováno v:
Collection of Czechoslovak Chemical Communications. 64:1325-1334
The reactions of glycosidases with pyridoxine were used for testing their ability to make new glycosidic bonds. Of 35 glycosidases examined, some exhibited regiospecificity towards one primary alcoholic group; glycosylation of phenolic hydroxyl group
Publikováno v:
Biotechnology Letters. 18:725-730
Extracellular β-N-acetylhexosaminidase in basic specific activity 1.5 U/mg protein was induced 15 – 35 times (up to 50 U/mg protein) by mixture of chitooligomers (crude chitin hydrolysate), 10 – 20 times (20 – 30 U/mg protein) by N-acetylgluco
Autor:
Jan Vrkoč, Zdenka Huňková, Bohumír Koutek, Vladimír Křen, Aleš Svatoš, David Šaman, Irena Valterová, Michal Hoskovec
Publikováno v:
Tetrahedron: Asymmetry. 7:1285-1294
The stereoselectivity of the reduction of rac-3-methyl-1-(phenylsulfonyl)hexan-2-one (1) to 3-methyl-1-(phenylsulfonyl)hexan-2-ol (2) diastereomers by more than 20 yeasts was studied. Reduction of carbonyl group in 1 proceeds with a high Re-face enan
Autor:
Monica Casali, Vladimír Křen, Silvia Nicotra, Sergio Riva, Lucie Hušáková, Marek Kuzma, Zdenka Huňková
Publikováno v:
Carbohydrate research. 331(2)
p-Nitrophenyl 6-O-acetyl-2-acetamido-2-deoxy-β- d -glucopyranoside (5a) was used as the glycosyl donor in a β-N-acetylhexosaminidase-catalysed (from Penicillium brasilianum) glycosylation of GlcNAc yielding 6′-O,N,N′-triacetylchitobiose (6), wh
Publikováno v:
Tetrahedron Letters. 39:9777
β- N -Acetylhexosaminidase from Aspergillus oryzae catalyzes the transfer of N -acetylglucosamine moiety from p NP-β-GlcNAc to mannose giving major product GlcNAcβ(1↔1)Manβ ( 1a ), and GlcNAc β(1→3) Man α β ( 2a ) and GlcNAc β(1→6) Man