Serveur d'exploration sur le phanerochaete

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Cloning and characterization of a novel bifunctional acetyl xylan esterase with carbohydrate binding module from Phanerochaete chrysosporium.

Identifieur interne : 000385 ( Main/Exploration ); précédent : 000384; suivant : 000386

Cloning and characterization of a novel bifunctional acetyl xylan esterase with carbohydrate binding module from Phanerochaete chrysosporium.

Auteurs : Nguyen Duc Huy [Corée du Sud] ; Saravanakumar Thiyagarajan ; Dae-Hyuk Kim ; Seung-Moon Park

Source :

RBID : pubmed:23287498

Descripteurs français

English descriptors

Abstract

The cDNA of acetyl xylan esterase 2 (PcAxe2) gene containing a carbohydrate binding module (CBM) sequence from Phanerochaete chrysosporium was cloned and expressed in Pichia pastoris. The recombinant PcAxe2 protein (rPcAxe2) was efficiently produced, reaching a maximum of 1058 U l(-1) after 6 days of cultivation. Molecular mass of the rPcAxe2 on SDS-PAGE was approximately 63 kDa under hyperglycosylation. Optimal activity of the purified rPcAxe2 enzyme was observed at pH and temperature of 7.0 and 30-35°C, respectively. In addition to acetyl xylan esterase activity, rPcAxe2 also exhibited a xylanase activity at an optimum pH and temperature of 5.0 and 80°C, respectively. The synergistic action of rPcAxe2 with rPcXynC on birchwood xylan, beechwood xylan and wheat arabinoxylan enhanced the total reducing soluble sugar.

DOI: 10.1016/j.jbiosc.2012.11.018
PubMed: 23287498


Affiliations:


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Le document en format XML

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<name sortKey="Huy, Nguyen Duc" sort="Huy, Nguyen Duc" uniqKey="Huy N" first="Nguyen Duc" last="Huy">Nguyen Duc Huy</name>
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<term>Acetylesterase (metabolism)</term>
<term>Amino Acid Sequence (MeSH)</term>
<term>Cellulose (metabolism)</term>
<term>Cloning, Molecular (MeSH)</term>
<term>Endo-1,4-beta Xylanases (metabolism)</term>
<term>Molecular Sequence Data (MeSH)</term>
<term>Peracetic Acid (metabolism)</term>
<term>Phanerochaete (enzymology)</term>
<term>Pichia (genetics)</term>
<term>Recombinant Proteins (chemistry)</term>
<term>Recombinant Proteins (metabolism)</term>
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<term>Temperature (MeSH)</term>
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<term>Acetylesterase (composition chimique)</term>
<term>Acetylesterase (génétique)</term>
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<term>Acide peracétique (métabolisme)</term>
<term>Alignement de séquences (MeSH)</term>
<term>Cellulose (métabolisme)</term>
<term>Clonage moléculaire (MeSH)</term>
<term>Données de séquences moléculaires (MeSH)</term>
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<term>Phanerochaete (enzymologie)</term>
<term>Pichia (génétique)</term>
<term>Protéines recombinantes (composition chimique)</term>
<term>Protéines recombinantes (métabolisme)</term>
<term>Séquence d'acides aminés (MeSH)</term>
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<term>Acide peracétique</term>
<term>Cellulose</term>
<term>Endo-1,4-beta xylanases</term>
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<term>Temperature</term>
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<term>Clonage moléculaire</term>
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<div type="abstract" xml:lang="en">The cDNA of acetyl xylan esterase 2 (PcAxe2) gene containing a carbohydrate binding module (CBM) sequence from Phanerochaete chrysosporium was cloned and expressed in Pichia pastoris. The recombinant PcAxe2 protein (rPcAxe2) was efficiently produced, reaching a maximum of 1058 U l(-1) after 6 days of cultivation. Molecular mass of the rPcAxe2 on SDS-PAGE was approximately 63 kDa under hyperglycosylation. Optimal activity of the purified rPcAxe2 enzyme was observed at pH and temperature of 7.0 and 30-35°C, respectively. In addition to acetyl xylan esterase activity, rPcAxe2 also exhibited a xylanase activity at an optimum pH and temperature of 5.0 and 80°C, respectively. The synergistic action of rPcAxe2 with rPcXynC on birchwood xylan, beechwood xylan and wheat arabinoxylan enhanced the total reducing soluble sugar.</div>
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<AbstractText>The cDNA of acetyl xylan esterase 2 (PcAxe2) gene containing a carbohydrate binding module (CBM) sequence from Phanerochaete chrysosporium was cloned and expressed in Pichia pastoris. The recombinant PcAxe2 protein (rPcAxe2) was efficiently produced, reaching a maximum of 1058 U l(-1) after 6 days of cultivation. Molecular mass of the rPcAxe2 on SDS-PAGE was approximately 63 kDa under hyperglycosylation. Optimal activity of the purified rPcAxe2 enzyme was observed at pH and temperature of 7.0 and 30-35°C, respectively. In addition to acetyl xylan esterase activity, rPcAxe2 also exhibited a xylanase activity at an optimum pH and temperature of 5.0 and 80°C, respectively. The synergistic action of rPcAxe2 with rPcXynC on birchwood xylan, beechwood xylan and wheat arabinoxylan enhanced the total reducing soluble sugar.</AbstractText>
<CopyrightInformation>Copyright © 2012 The Society for Biotechnology, Japan. Published by Elsevier B.V. All rights reserved.</CopyrightInformation>
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