Preparation and preliminary X-ray analysis of the catalytic module of beta-1,3-xylanase from the marine bacterium Vibrio sp. AX-4.
Beta-1,3-xylanase (1,3-beta-D-xylan xylanohydrolase; EC 3.2.1.32) is an enzyme capable of hydrolyzing beta-1,3-xylan. The newly cloned beta-1,3-xylanase from the marine bacterium Vibrio sp. AX-4 (XYL4) exhibited a modular structure consisting of three modules: an N-terminal catalytic module belonging to glycoside hydrolase family 26 and two C-terminal xylan-binding modules belonging to carbohydrate-binding module family 31. Despite substantial crystallization screening, crystallization of the recombinant XYL4 was not accomplished. However, the deletion mutant of XYL4, composed of a catalytic module without a xylan-binding module, was crystallized. The crystal belonged to space group P2(1)2(1)2(1), with unit-cell parameters a = 51.6, b = 75.8, c = 82.0 A. X-ray diffraction data were collected to 1.44 A resolution.
Division of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan.
Keishi
K
Sakaguchi
Masashi
M
Kiyohara
Nobuhisa
N
Watanabe
Kuniko
K
Yamaguchi
Makoto
M
Ito
Takashi
T
Kawamura
Isao
I
Tanaka
D020134:Catalytic Domain; D003460:Crystallization; D018360:Crystallography, X-Ray; D008386:Marine Biology; D014733:Vibrio / Q000145:classification* / Q000201:enzymology* / Q000235:genetics; D043325:Xylan Endo-1,3-beta-Xylosidase / Q000096:biosynthesis / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification
D043325:Xylan Endo-1,3-beta-Xylosidase