skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Identification of the nucleophile catalytic residue of GH51 α-l-arabinofuranosidase from Pleurotus ostreatus

Journal Article · · AMB Express
 [1];  [2];  [3];  [2]
  1. Univ. of Naples Federico II (Italy); National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Univ. of Naples Federico II (Italy)
  3. Aix-Marseille Univ. (France)

In this paper, the recombinant α-l-arabinofuranosidase from the fungus Pleurotus ostreatus (rPoAbf) was subjected to site-directed mutagenesis in order to identify the catalytic nucleophile residue. Based on bioinformatics and homology modelling analyses, E449 was revealed to be the potential nucleophilic residue. Thus, the mutant E449G of PoAbf was recombinantly expressed in Pichia pastoris and its recombinant expression level and reactivity were investigated in comparison to the wild-type. The design of a suitable set of hydrolysis experiments in the presence or absence of alcoholic arabinosyl acceptors and/or formate salts allowed to unambiguously identify the residue E449 as the nucleophile residue involved in the retaining mechanism of this GH51 arabinofuranosidase. 1H NMR analysis was applied for the identification of the products and the assignement of their anomeric configuration.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
Ministero dell'Universita e della Ricerca Scientifica-Industrial Research Project
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1236038
Report Number(s):
NREL/JA-2700-65692
Journal Information:
AMB Express, Vol. 5, Issue 1; Related Information: AMB Express; ISSN 2191-0855
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

References (30)

Consolidation of glycosyl hydrolase family 30: A dual domain 4/7 hydrolase family consisting of two structurally distinct groups journal October 2010
The effect of Pleurotus ostreatus arabinofuranosidase and its evolved variant in lignocellulosic biomasses conversion journal November 2014
Comparative Protein Modelling by Satisfaction of Spatial Restraints journal December 1993
A family GH51 α-l-arabinofuranosidase from Pleurotus ostreatus: identification, recombinant expression and characterization journal November 2011
Structural and biochemical characterization of the  -N-acetylglucosaminidase from Thermotoga maritima: Toward rationalization of mechanistic knowledge in the GH73 family journal October 2014
Development of an improved variant of GH51 α-l-arabinofuranosidase from Pleurotus ostreatus by directed evolution journal May 2014
Site-directed mutagenesis and functional analysis of active site acidic amino acid residues D142, D144 and E146 in Manduca sexta (tobacco hornworm) chitinase journal November 2002
Study of the Active Site Residues of a Glycoside Hydrolase Family 8 Xylanase journal November 2005
The carbohydrate-active enzymes database (CAZy) in 2013 journal November 2013
Long-lived glycosyl-enzyme intermediate mimic produced by formate re-activation of a mutant endoglucanase lacking its catalytic nucleophile journal February 2001
Changing Enzymic Reaction Mechanisms by Mutagenesis: Conversion of a Retaining Glucosidase to an Inverting Enzyme journal December 1994
Mutational and Structural Analyses of Caldanaerobius polysaccharolyticus Man5B Reveal Novel Active Site Residues for Family 5 Glycoside Hydrolases journal November 2013
Purification and Characterization of a Novel α-L-Arabinofuranosidase fromPichia capsulataX91 journal January 2000
Restoration of the Activity of Active-Site Mutants of the Hyperthermophilic β-Glycosidase from Sulfolobus solfataricus :  Dependence of the Mechanism on the Action of External Nucleophiles journal December 1998
Synthesis of 2,3,5-Tri-O-benzyl-D-arabinitol 1,4-Cyclic Sulfate and Its Conversion into Potential Precursors of Shikimate Substrate Analogues journal January 1991
Mechanistic Consequences of Mutation of Active Site Carboxylates in a Retaining β-1,4-Glycanase from Cellulomonas fimi journal January 1996
Multiple sequence alignment with hierarchical clustering journal November 1988
Evolution, substrate specificity and subfamily classification of glycoside hydrolase family 5 (GH5) journal January 2012
Structure of a novel thermostable GH51 α-L-arabinofuranosidase from Thermotoga petrophila RKU-1 journal August 2011
Functional roles of H98 and W99 and β2α2 loop dynamics in the α-l -arabinofuranosidase from Thermobacillus xylanilyticus journal August 2012
In situ proton NMR study of acetyl and formyl group migration in mono- O -acyl D-glucose journal April 2009
Functional Diversity of Four Glycoside Hydrolase Family 3 Enzymes from the Rumen Bacterium Prevotella bryantii B 1 4 journal May 2010
The Pseudomonas cellulosa glycoside hydrolase family 51 arabinofuranosidase exhibits wide substrate specificity journal September 2001
Probing the catalytically essential residues of the α-l-arabinofuranosidase from Thermobacillus xylanilyticus journal January 2002
The HHpred interactive server for protein homology detection and structure prediction journal July 2005
Dividing the large glycoside hydrolase family 13 into subfamilies: towards improved functional annotations of  -amylase-related proteins journal September 2006
A novel thermophilic Glycosynthase that effects branching glycosylation journal February 2000
A dual-constriction biological nanopore resolves homonucleotide sequences with high fidelity journal July 2020
Detailed Kinetic Analysis and Identification of the Nucleophile in α-l-Arabinofuranosidase from Geobacillus stearothermophilus T-6, a Family 51 Glycoside Hydrolase journal September 2002
Evolution, substrate specificity and subfamily classification of glycoside hydrolase family 5 (GH5) text January 2012