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Information on EC 3.2.1.39 - glucan endo-1,3-beta-D-glucosidase

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EC Tree
IUBMB Comments
Different from EC 3.2.1.6 endo-1,3(4)-beta-glucanase. Very limited action on mixed-link (1->3,1->4)-beta-D-glucans. Hydrolyses laminarin, paramylon and pachyman.
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This record set is specific for:
UNIPROT: O68641
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Word Map
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria, Archaea
Synonyms
beta-1,3-glucanase, beta-glucanase, glud2, laminarinase, 1,3-beta-glucanase, endo-beta-1,3-glucanase, exo-beta-1,3-glucanase, beta-1,3 glucanase, callase, beta-1,3-endoglucanase, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
(1->3)-beta-glucan endohydrolase
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-
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(1->3)-beta-glucan endohydrolase BGN13.1
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-
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(1->3)-beta-glucan endohydrolase GI
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-
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(1->3)-beta-glucan endohydrolase GII
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(1->3)-beta-glucan endohydrolase GIII
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-
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(1->3)-beta-glucan endohydrolase GIV
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(1->3)-beta-glucan endohydrolase GV
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(1->3)-beta-glucan endohydrolase GVI
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-
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(1->3)-beta-glucanase
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-
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(1->3)-beta-glucanase A1
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(1->3)-beta-glucanase BGN13.1
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(1->3)-beta-glucanase isoenzyme GI
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(1->3)-beta-glucanase isoenzyme GII
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(1->3)-beta-glucanase isoenzyme GIII
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(1->3)-beta-glucanase isoenzyme GIV
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(1->3)-beta-glucanase isoenzyme GV
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(1->3)-beta-glucanase isoenzyme GVI
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-
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(13)-beta-glucan 3-glucanohydrolase
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(13)-beta-glucan endohydrolase
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1,3-beta-glucan 3-glucanohydrolase
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Acidic beta-1,3-glucanase
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Anther-specific protein A6
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-
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Basic beta-1,3-endoglucanase BGN13.1
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Basic beta-1,3-glucanase
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Beta-1,3-endoglucanase GI
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Beta-1,3-endoglucanase GII
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-
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Beta-1,3-endoglucanase GIII
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-
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Beta-1,3-endoglucanase GIV
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-
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Beta-1,3-endoglucanase GV
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-
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Beta-1,3-endoglucanase GVI
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-
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Beta-1,3-endoglucanase, basic
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beta-1,3-glucanase
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callase
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endo-(1,3)-beta-D-glucanase
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endo-(13)-beta-D-glucanase
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endo-1,3-beta-D-glucanase
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endo-1,3-beta-glucanase
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endo-1,3-beta-glucosidase
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endo-1,3-glucanase
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glucan endo-1,3-beta-glucosidase
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Glucanase GLA
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Glucanase GLB
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kitalase
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laminaranase
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laminarinase
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oligo-1,3-glucosidase
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PpGns1
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PR-2B
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PR-35
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PR-36
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PR-37
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REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
hydrolysis of O-glycosyl bond
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PATHWAY SOURCE
PATHWAYS
SYSTEMATIC NAME
IUBMB Comments
3-beta-D-glucan glucanohydrolase
Different from EC 3.2.1.6 endo-1,3(4)-beta-glucanase. Very limited action on mixed-link (1->3,1->4)-beta-D-glucans. Hydrolyses laminarin, paramylon and pachyman.
CAS REGISTRY NUMBER
COMMENTARY hide
9025-37-0
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SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
carboxymethyl-curdlan + H2O
?
show the reaction diagram
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?
laminarin + H2O
D-glucose + ?
show the reaction diagram
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?
lichenan + H2O
D-glucose + ?
show the reaction diagram
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?
zymosan A + H2O
?
show the reaction diagram
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-
?
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.35 - 0.48
Laminarin
TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
2.1 - 138
Laminarin
SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
162.7
mutant enzyme T149A/G145D/A344V, at 37°C, using laminarin as the substrate
49.1
wild type enzyme, at 37°C, using laminarin as the substrate
70.3
mutant enzyme F160L, at 37°C, using laminarin as the substrate
80.6
mutant enzyme T149A/A344V, at 37°C, using laminarin as the substrate
96.2
mutant enzyme G145D, at 37°C, using laminarin as the substrate
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
formerly Oerskovia xanthineolytica, strain LLG109
UniProt
Manually annotated by BRENDA team
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
O68641_CELCE
435
0
46097
TrEMBL
other Location (Reliability: 1)
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
F160L
increased activity
G145D
increased activity
T149A/A344V
increased activity
T149A/G145D/A344V
increased activity
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
nickel metal affinity chromatography
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
expressed in Escherichia coli BL21(DE3) cells
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Salazar, O.; Basso, C.; Barba, P.; Orellana, C.; Asenjo, J.A.
Improvement of the lytic properties of a beta-1,3-glucanase by directed evolution
Mol. Biotechnol.
33
211-220
2006
Cellulosimicrobium cellulans (O68641)
Manually annotated by BRENDA team