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3-alpha(S)-strictosidine + H2O
tryptamine + secologanin
-
-
-
?
3-[(tert-butoxycarbonyl)amino]propyl (2S,3R,4S)-3-ethenyl-2-(beta-D-glucopyranosyloxy)-4-(2-oxoethyl)-3,4-dihydro-2H-pyran-5-carboxylate + secologanin
? + H2O
competitive to strictosidine
-
-
?
5,6-dihydroxytryptamine
?
-
-
-
?
5,6-dihydroxytryptamine + secologanin
? + H2O
-
-
-
?
5-fluorotryptamine
?
-
-
-
?
5-fluorotryptamine + secologanin
5-fluoro-3-alpha(S)-strictosidine + H2O
-
-
-
?
6-fluorotryptamine
?
-
-
-
?
6-fluorotryptamine + secologanin
6-fluoro-3-alpha(S)-strictosidine + H2O
-
-
-
?
6-methoxyltryptamine + secologanin
6-methoxy-3-alpha(S)-strictosidine + H2O
-
-
-
?
6-methoxytryptamine
?
-
-
-
?
6-methyltryptamine + secologanin
6-methyl-3-alpha(S)-strictosidine + H2O
-
-
-
?
7-azatryptamine + secologanin
3-alpha(S)-12-azastrictosidine
assay at pH 7.0, 28°C, reaction stopped by adding methanol
-
-
?
7-methyltryptamine
?
-
-
-
?
7-methyltryptamine + secologanin
7-methyl-3-alpha(S)-strictosidine + H2O
-
-
-
?
but-3-yn-1-yl (2S,3R,4S)-3-ethenyl-2-(beta-D-glucopyranosyloxy)-4-(2-oxoethyl)-3,4-dihydro-2H-pyran-5-carboxylate + secologanin
? + H2O
competitive to strictosidine
-
-
?
methyl (2R,4S)-2-(2-methylpropoxy)-4-(2-oxoethyl)-3,4-dihydro-2H-pyran-5-carboxylate + tryptamine
methyl (2R,4S)-2-(2-methylpropoxy)-4-[(1S)-2,3,4,9-tetrahydro-1H-beta-carbolin-1-ylmethyl]-3,4-dihydro-2H-pyran-5-carboxylate + H2O
cis- and trans-isomers are equally well accepted as substrates
-
-
?
methyl (2R,4S)-2-(cyclohexyloxy)-4-(2-oxoethyl)-3,4-dihydro-2H-pyran-5-carboxylate + tryptamine
methyl (2R,4S)-2-(cyclohexyloxy)-4-[(1S)-2,3,4,9-tetrahydro-1H-beta-carbolin-1-ylmethyl]-3,4-dihydro-2H-pyran-5-carboxylate + H2O
significant preference for the trans-isomer
-
-
?
methyl (2R,4S)-2-ethoxy-4-(2-oxoethyl)-3,4-dihydro-2H-pyran-5-carboxylate + tryptamine
methyl (2R,4S)-2-ethoxy-4-[(1S)-2,3,4,9-tetrahydro-1H-beta-carbolin-1-ylmethyl]-3,4-dihydro-2H-pyran-5-carboxylate + H2O
cis- and trans-isomers are equally well accepted as substrates
-
-
?
methyl (2R,4S)-2-tert-butoxy-4-(2-oxoethyl)-3,4-dihydro-2H-pyran-5-carboxylate + tryptamine
methyl (2R,4S)-2-tert-butoxy-4-[(1S)-2,3,4,9-tetrahydro-1H-beta-carbolin-1-ylmethyl]-3,4-dihydro-2H-pyran-5-carboxylate + H2O
cis- and trans-isomers are equally well accepted as substrates
-
-
?
methyl (2S,4S)-2-(2-methylpropoxy)-4-(2-oxoethyl)-3,4-dihydro-2H-pyran-5-carboxylate + tryptamine
methyl (2S,4S)-2-(2-methylpropoxy)-4-[(1S)-2,3,4,9-tetrahydro-1H-beta-carbolin-1-ylmethyl]-3,4-dihydro-2H-pyran-5-carboxylate + H2O
cis- and trans-isomers are equally well accepted as substrates
-
-
?
methyl (2S,4S)-2-ethoxy-4-(2-oxoethyl)-3,4-dihydro-2H-pyran-5-carboxylate + tryptamine
methyl (2S,4S)-2-ethoxy-4-[(1S)-2,3,4,9-tetrahydro-1H-beta-carbolin-1-ylmethyl]-3,4-dihydro-2H-pyran-5-carboxylate + H2O
cis- and trans-isomers are equally well accepted as substrates
-
-
?
methyl (2S,4S)-2-tert-butoxy-4-(2-oxoethyl)-3,4-dihydro-2H-pyran-5-carboxylate + tryptamine
methyl (2S,4S)-2-tert-butoxy-4-[(1S)-2,3,4,9-tetrahydro-1H-beta-carbolin-1-ylmethyl]-3,4-dihydro-2H-pyran-5-carboxylate + H2O
cis- and trans-isomers are equally well accepted as substrates
-
-
?
prop-2-yn-1-yl (2S,3R,4S)-3-ethenyl-2-(beta-D-glucopyranosyloxy)-4-(2-oxoethyl)-3,4-dihydro-2H-pyran-5-carboxylate + secologanin
? + H2O
competitive to strictosidine
-
-
?
secologanin + tryptamine
3-alpha(S)-strictosidine + H2O
-
-
-
?
serotonin + secologanin
5-hydroxy-3-alpha(S)-strictosidine + H2O
-
-
-
?
tryptamine + 2'-O-methylsecologanin
? + H2O
-
-
-
?
tryptamine + 3'-O-methylsecologanin
? + H2O
-
-
-
?
tryptamine + secologanic acid allyl ester
? + H2O
-
-
-
?
tryptamine + secologanic acid pentynyl ester
? + H2O
-
-
-
?
tryptamine + secologanic acid propynyl ester
? + H2O
-
-
-
?
tryptamine + secologanin
3-alpha(S)-strictosidine
the enzyme catalyses the biological Pictete-Spengler reaction of tryptamine and secologanin. Tryptamine is located at the bottom of the substrate binding pocket, where its primary amine group is connected with residue Glu309 by a hydrogen bond. The main amino acid residues involved in forming the active centre are Tyr105, Trp149, Val167, Met180, Val208, Phe226, Ser269, Met276, His277, His307, Phe308, Glu309, Leu323, and Phe324
-
-
?
tryptamine + secologanin
3-alpha(S)-strictosidine + H2O
tryptamine + secologanin
3alpha(S)-strictosidine
-
-
-
?
3-alpha(S)-strictosidine + H2O
tryptamine + secologanin
-
-
-
-
?
5-fluoro-tryptamine + H2O
?
-
-
-
-
?
5-hydroxy-tryptamine + H2O
?
-
-
-
-
?
5-methoxy-tryptamine + H2O
?
-
-
-
-
?
5-methyl-tryptamine + H2O
?
-
-
-
-
?
6-fluoro-tryptamine + H2O
?
-
-
-
-
?
6-methoxy-tryptamine + H2O
?
-
-
-
-
?
6-methyl-tryptamine + H2O
?
-
-
-
-
?
tryptamine + secologanin
3-alpha(S)-strictosidine
tryptamine + secologanin
3-alpha(S)-strictosidine + H2O
tryptamine + secologanin
3alpha(S)-strictosidine
-
-
-
-
?
additional information
?
-
tryptamine + secologanin
3-alpha(S)-strictosidine + H2O
the strictosidine synthase plays a central role in the biosynthesis of all structural types of monoterpenoid indole alkaloids, overview
-
-
?
tryptamine + secologanin
3-alpha(S)-strictosidine + H2O
assay at pH 7.0, 28°C, reaction stopped by adding methanol
-
-
?
tryptamine + secologanin
3-alpha(S)-strictosidine
-
-
-
?
tryptamine + secologanin
3-alpha(S)-strictosidine
-
-
-
?
tryptamine + secologanin
3-alpha(S)-strictosidine
-
-
-
?
tryptamine + secologanin
3-alpha(S)-strictosidine
-
involved in synthesis of monoterpenoid indole alkaloides
-
?
tryptamine + secologanin
3-alpha(S)-strictosidine
-
involved in synthesis of monoterpenoid indole alkaloides
-
?
tryptamine + secologanin
3-alpha(S)-strictosidine + H2O
-
-
-
-
?
tryptamine + secologanin
3-alpha(S)-strictosidine + H2O
-
the enzyme is as amine lyases and catalyzes a PictetSpengler-type condensation between tryptamine and the aldehyde secologanin which leads to the formation of (S)-strictosidine
-
-
?
additional information
?
-
substrate specificity, e.g. with tryptamine derivatives, overview. No activity with N-acetyl-5-hydroxytryptamine, N-methyltryptamine, N-omega-methyltryptamine, 2-methyl,5-hydroxytryptamine, 3-methylamine indole, 3-propylamine indole, 2-methyltryptamine, 2-ethyltryptamine, 5,7-dimethoxytryptamine, phenylalanine, histamine, dopamine, 5-methyltryptamine, 5-methoxytryptamine, 4,5-dimethyltryptamine, and 4-methyl-5-methoxytryptamine, and with secologanic acid, tarennoside, 18-n-butylsecologanin, and 18-tert-butylsecologanin, overview. Dihydrosecologanin and secologanin acid ethyl ester are poor substrates
-
-
?
additional information
?
-
-
substrate specificity, e.g. with tryptamine derivatives, overview. No activity with N-acetyl-5-hydroxytryptamine, N-methyltryptamine, N-omega-methyltryptamine, 2-methyl,5-hydroxytryptamine, 3-methylamine indole, 3-propylamine indole, 2-methyltryptamine, 2-ethyltryptamine, 5,7-dimethoxytryptamine, phenylalanine, histamine, dopamine, 5-methyltryptamine, 5-methoxytryptamine, 4,5-dimethyltryptamine, and 4-methyl-5-methoxytryptamine, and with secologanic acid, tarennoside, 18-n-butylsecologanin, and 18-tert-butylsecologanin, overview. Dihydrosecologanin and secologanin acid ethyl ester are poor substrates
-
-
?
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2,4-dinitrofluorobenzene
5 mM, no inactivation after 30 min and 15% inactivation after 120 min in Tris-HCl, pH 8.0
4-(2-aminoethyl)-benzenesulfonyl fluoride
4 mM, 4% inactivation after 30 min and 12% inactivation after 120 min in 100 mM potassium phosphate buffer, pH 7.0
diethylpyrocarbonate
1 mM, 49% inactivation after 30 min and 63% inactivation after 120 min in 100 mM potassium phosphate, pH 6.0
N,N'-dicyclohexylcarbodiimide
0.05 mM, complete inactivation after 30 min in MES, pH 6.0
N-Acetylimidazole
10 mM, 5% inactivation after 30 min and 12% inactivation after 120 min in Tris-HCl, pH 8.0
N-ethyl-5-phenylisoxazolium-3'-sulfonate
1 mM leads to 48% inactivation after 30 min and 53% inactivation after 120 min in MES, pH 6.0, 5 mM leads to 80% inactivation after 30 min and 100% inactivation after 120 min in MES, pH 6.0
p-chlormercuribenzoate
1 mM, 34% inactivation after 30 min and 35% inactivation after 120 min in 100 mM potassium phosphate, pH 6.0
tryptamine
-
inhibitory above 0.7 mM
additional information
no inactivation by phenylmethanesulfonyl fluoride, L-chloro-3-(4-tosyl-amido)-4-phenyl-2-butanone and L-chloro-3-(4-tosyl-amido)-7-amino-2-heptanone after 30 and 120 min in 100 mM potassium phosphate buffer, pH 7.0
-
additional information
-
no inactivation by phenylmethanesulfonyl fluoride, L-chloro-3-(4-tosyl-amido)-4-phenyl-2-butanone and L-chloro-3-(4-tosyl-amido)-7-amino-2-heptanone after 30 and 120 min in 100 mM potassium phosphate buffer, pH 7.0
-
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Kutchan, T.M.; Bock, A.; Dittrich, H.
Heterologous expression of the plant proteins strictosidine synthase and berberine bridge enzyme in insect cell culture
Phytochemistry
35
353-360
1994
Rauvolfia serpentina
brenda
Hampp, N.; Zenk, M.H.
Homogeneous strictosidine synthase from cell suspension cultures of Rauvolfia serpentina
Phytochemistry
27
3811-3815
1988
Rauvolfia serpentina
-
brenda
Bracher, D.; Kutchan, T.M.
Strictosidine synthase from Rauvolfia serpentina: analysis of a gene involved in indole alkaloid biosynthesis
Arch. Biochem. Biophys.
294
717-723
1992
Rauvolfia mannii, Rauvolfia serpentina
brenda
Koepke, J.; Ma, X.; Fritzsch, G.; Michel, H.; Stockigt, J.
Crystallization and preliminary X-ray analysis of strictosidine synthase and its complex with the substrate tryptamine
Acta Crystallogr. Sect. D
61
690-693
2005
Rauvolfia serpentina
brenda
Ma, X.; Koepke, J.; Fritzsch, G.; Diem, R.; Kutchan, T.M.; Michel, H.; Stockigt, J.
Crystallization and preliminary X-ray crystallographic analysis of strictosidine synthase from Rauvolfia: the first member of a novel enzyme family
Biochim. Biophys. Acta
1702
121-124
2004
Rauvolfia serpentina
brenda
Ma, X.; Panjikar, S.; Koepke, J.; Loris, E.; Stockigt, J.
The Structure of Rauvolfia serpentina Strictosidine Synthase Is a Novel Six-Bladed {beta}-Propeller Fold in Plant Proteins
Plant Cell
18
907-920
2006
Rauvolfia serpentina (P68175), Rauvolfia serpentina
brenda
Loris, E.A.; Panjikar, S.; Ruppert, M.; Barleben, L.; Unger, M.; Schuebel, H.; Stoeckigt, J.
Structure-based engineering of strictosidine synthase: auxiliary for alkaloid libraries
Chem. Biol.
14
979-985
2007
Rauvolfia serpentina
brenda
Maresh, J.J.; Giddings, L.A.; Friedrich, A.; Loris, E.A.; Panjikar, S.; Trout, B.L.; Stoeckigt, J.; Peters, B.; OConnor, S.E.
Strictosidine synthase: mechanism of a Pictet-Spengler catalyzing enzyme
J. Am. Chem. Soc.
130
710-723
2008
Catharanthus roseus, Rauvolfia serpentina (P68175)
brenda
Stoeckigt, J.; Barleben, L.; Panjikar, S.; Loris, E.A.
3D-Structure and function of strictosidine synthase - the key enzyme of monoterpenoid indole alkaloid biosynthesis
Plant Physiol. Biochem.
46
340-355
2008
Catharanthus roseus (P18417), Rauvolfia serpentina (P68175), Rauvolfia serpentina
brenda
Yang, L.; Zou, H.; Zhu, H.; Ruppert, M.; Gong, J.; Stoeckigt, J.
Improved expression of His(6)-tagged strictosidine synthase cDNA for chemo-enzymatic alkaloid diversification
Chem. Biodivers.
7
860-870
2010
Rauvolfia serpentina (P68175)
brenda
Stockigt, J.; Hammes, B.; Ruppert, M.
Construction and expression of a dual vector for chemo-enzymatic synthesis of plant indole alkaloids in Escherichia coli
Nat. Prod. Res.
24
759-766
2010
Rauvolfia serpentina
brenda
Bernhardt, P.; OConnor, S.E.
Synthesis and biochemical evaluation of des-vinyl secologanin aglycones with alternate stereochemistry
Tetrahedron Lett.
50
7118-7120
2009
Rauvolfia serpentina (P68175)
brenda
Fischereder, E.; Pressnitz, D.; Kroutil, W.; Lutz, S.
Engineering strictosidine synthase: rational design of a small, focused circular permutation library of the beta-propeller fold enzyme
Bioorg. Med. Chem.
22
5633-5637
2014
Rauvolfia serpentina
brenda
Zhu, H.; Kercmar, P.; Wu, F.; Rajendran, C.; Sun, L.; Wang, M.; Stoeckigt, J.
Using strictosidine synthase to prepare novel alkaloids
Curr. Med. Chem.
22
1880-1888
2015
Rauvolfia serpentina (P68175)
brenda