2.4.1.34: 1,3-beta-glucan synthase This is an abbreviated version! For detailed information about 1,3-beta-glucan synthase, go to the full flat file .
Reaction
UDP-alpha-D-glucose +
[(1->3)-beta-D-glucosyl]n =
UDP +
[(1->3)-beta-D-glucosyl]n+1
Synonyms (1,3)-beta-D-glucan (curdlan) synthase, (1,3)-beta-D-glucan synthase, (1,3)-beta-glucan (callose) synthase, (1,3)beta-D-glucan synthase, 1,3-beta-D-glucan 3-beta-D-glucosyltransferase, 1,3-beta-D-glucan synthase, 1,3-beta-D-glucan synthetase, 1,3-beta-D-glucan-UDP glucosyltransferase, 1,3-beta-glucan synthase, 1,3-beta-glucan synthase (GS), 1,3-beta-glucan-uridine diphosphoglucosyltransferase, Arabidopsis beta-1,3-glucan synthase, beta(1,3)-D-glucan synthase, beta(1,3)glucan synthase, beta-1,3-glucan synthase, beta-1,3-glucan synthetase, beta-glucan synthase, Bgs1p, bgs2p, Bgs3p, Bgs4p, callose synthase, callose synthetase, CalS, CrdS, curdlan synthase, Fks, FKS-1, Fks1p, FKS2, GCS1, GLS1, glucan synthase (GS), glucan synthase-like, glucan synthase-like 1, GS-II, Gsc-1, Gsc1, GSC2, GSL, GSL1, GSL8, MaFKS, More, paramylon synthetase, PbFKS1, PMR, PNEG_03180, PNEJI1_001061, UDP-glucose-1,3-beta-glucan glucosyltransferase, UDP-glucose-beta-glucan glucosyltransferase, UDP-glucose:(1,3)beta-glucan synthase, UDPglucose-1,3-beta-D-glucan glucosyltransferase, uridine diphosphoglucose-1,3-beta-glucan glucosyltransferase, uridine-diphosphate glucose:1,3-beta-D-glucosyltransferase, ZT1E4_G10604
ECTree
Activating Compound
Activating Compound on EC 2.4.1.34 - 1,3-beta-glucan synthase
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3-[(cholamidopropyl)dimethyl(ammonio)]propanesulfonate
-
stimulate
Acylcarnitine
-
inhibition in presence of digitonin, stimulation in absence of digitonin within a certain concentration range
beta-furfuryl-beta-D-glucoside
-
stimulation
beta-linked glucosides
-
stimulate
beta-methyl-D-glucoside
-
stimulate
CaCl2
-
7 mM, 2fold increase in activity
cellobiosylglucose
-
stimulate
CHAPS
-
pollen CalS isozyme is activated in vitro by the detergent CHAPS, but activation is not associated with a detectable change in the molecular mass of the NaGSL1 polypeptide
cytochalasin
-
slightly activating
-
Echinocandin B
-
inhibition in presence of digitonin, stimulation in absence of digitonin within a certain concentration range
EDTA
-
maximal activity at 50 mM
hydroquinone-beta-D-glucoside
-
stimulate
lysophosphatidylcholine
-
inhibition in presence of digitonin, stimulation in absence of digitonin within a certain concentration range
MgCl2
-
5 mM, 3fold increase in activity
platelet-activating factor
-
inhibition in presence of digitonin, stimulation in absence of digitonin within a certain concentration range
Trypsin
-
pollen CalS isozyme, in contrast to the somatic isozyme, is activated in vitro by the proteolytic enzyme trypsin, but activation is not associated with a detectable change in the molecular mass of the NaGSL1 polypeptide. Some CalS activity is lost with longer incubations with trypsin
-
alamethicin
-
channel-forming peptide, required for in vitro enzyme measurements
alamethicin
-
channel-forming peptide, required for in vitro enzyme measurements
bovine serum albumin
-
enhances activity
-
bovine serum albumin
-
enhances activity
-
bovine serum albumin
-
enhances activity
-
bovine serum albumin
-
enhances activity
-
bovine serum albumin
-
enhances activity
-
bovine serum albumin
-
enhances activity
-
bovine serum albumin
-
enhances activity
-
cellobiose
-
weakly stimulation at 20 mM but in presence of Ca2+ maximal stimulation
D-glucose
-
stimulate
D-glucosides
-
stimulate
D-glucosides
-
up to 12fold activation
gentiobiose
-
stimulate
GTP
-
-
GTP
-
and its analogs stimulate, GTPgammaS is the most potent stimulator
laminaribiose
-
stimulate
laminaribiose
-
stimulate
laminaribiose
-
stimulate
laminaribiose
-
no reaction as primer
maltose
-
stimulate
Polyols
-
stimulate
-
spermine
-
stimulate
additional information
-
maximal activity in presence of 0.75 mM Ca2+, 0.5 mM EGTA and 5 mM cellobiose at pH 7.5 and 30°C
-
additional information
-
enzyme shows activity without addition of a primer
-
additional information
-
activation by substrate
-
additional information
-
the somatic isozyme is activated by wounding
-
additional information
-
reaction requires addition of glycerol, bovine serum albumin and ATP or GTP for maximal activity
-
additional information
-
membrane-bound stimulator, probably a glycoprotein may represent a natural effector which modulates enzyme activity during membrane flow leading to the delivery of active enzymes at the cell surface
-
additional information
-
Callose synthase activity is assosiated with ca. 200-kDa polypeptide.
-