Enzymes
| UniProtKB help_outline | 1 proteins |
| Enzyme class help_outline |
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| GO Molecular Function help_outline |
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- Name help_outline 3α(S)-strictosidine Identifier CHEBI:58193 Charge 1 Formula C27H35N2O9 InChIKeyhelp_outline XBAMJZTXGWPTRM-NTXHKPOFSA-O SMILEShelp_outline [H][C@@]1(C[C@H]2[C@@H](C=C)[C@@H](OC=C2C(=O)OC)O[C@@H]2O[C@H](CO)[C@@H](O)[C@H](O)[C@H]2O)[NH2+]CCc2c1[nH]c1ccccc21 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H2O Identifier CHEBI:15377 (Beilstein: 3587155; CAS: 7732-18-5) help_outline Charge 0 Formula H2O InChIKeyhelp_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILEShelp_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 6,048 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline D-glucose Identifier CHEBI:4167 (Beilstein: 1281604; CAS: 2280-44-6) help_outline Charge 0 Formula C6H12O6 InChIKeyhelp_outline WQZGKKKJIJFFOK-GASJEMHNSA-N SMILEShelp_outline OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 152 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline strictosidine aglycone Identifier CHEBI:58012 Charge 1 Formula C21H25N2O4 InChIKeyhelp_outline HXLWDALZXJIPSY-LPIRWUFSSA-O SMILEShelp_outline [H][C@@]1(C[C@H]2[C@@H](C=C)[C@H](O)OC=C2C(=O)OC)[NH2+]CCc2c1[nH]c1ccccc21 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:12917 | RHEA:12918 | RHEA:12919 | RHEA:12920 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Molecular architecture of strictosidine glucosidase: the gateway to the biosynthesis of the monoterpenoid indole alkaloid family.
Barleben L., Panjikar S., Ruppert M., Koepke J., Stoeckigt J.
Strictosidine beta-D-glucosidase (SG) follows strictosidine synthase (STR1) in the production of the reactive intermediate required for the formation of the large family of monoterpenoid indole alkaloids in plants. This family is composed of approximately 2000 structurally diverse compounds. SG pl ... >> More
Strictosidine beta-D-glucosidase (SG) follows strictosidine synthase (STR1) in the production of the reactive intermediate required for the formation of the large family of monoterpenoid indole alkaloids in plants. This family is composed of approximately 2000 structurally diverse compounds. SG plays an important role in the plant cell by activating the glucoside strictosidine and allowing it to enter the multiple indole alkaloid pathways. Here, we report detailed three-dimensional information describing both native SG and the complex of its inactive mutant Glu207Gln with the substrate strictosidine, thus providing a structural characterization of substrate binding and identifying the amino acids that occupy the active site surface of the enzyme. Structural analysis and site-directed mutagenesis experiments demonstrate the essential role of Glu-207, Glu-416, His-161, and Trp-388 in catalysis. Comparison of the catalytic pocket of SG with that of other plant glucosidases demonstrates the structural importance of Trp-388. Compared with all other glucosidases of plant, bacterial, and archaeal origin, SG's residue Trp-388 is present in a unique structural conformation that is specific to the SG enzyme. In addition to STR1 and vinorine synthase, SG represents the third structural example of enzymes participating in the biosynthetic pathway of the Rauvolfia alkaloid ajmaline. The data presented here will contribute to deciphering the structure and reaction mechanism of other higher plant glucosidases. << Less
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Expression, purification, crystallization and preliminary X-ray analysis of strictosidine glucosidase, an enzyme initiating biosynthetic pathways to a unique diversity of indole alkaloid skeletons.
Barleben L., Ma X., Koepke J., Peng G., Michel H., Stockigt J.
Strictosidine beta-D-glucosidase, a plant enzyme initiating biosynthetic pathways to about 2000 monoterpenoid indole alkaloids with an extremely large number of various carbon skeletons, has been functionally expressed in Escherichia coli and purified to homogeneity in mg scale. Crystals suitable ... >> More
Strictosidine beta-D-glucosidase, a plant enzyme initiating biosynthetic pathways to about 2000 monoterpenoid indole alkaloids with an extremely large number of various carbon skeletons, has been functionally expressed in Escherichia coli and purified to homogeneity in mg scale. Crystals suitable for X-ray analysis were found by robot-mediated screening. Using the hanging-drop technique, optimum conditions were 0.3 M ammonium sulfate, 0.1 M sodium acetate, pH 4.6 and PEG 4000 (10%) as precipitant buffer. The crystals of strictosidine glucosidase belong to the space group P42(1)2 with unit cell dimensions of a=157.63, c=103.59 A and diffract X-rays to 2.48-A resolution. << Less
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Glucosidases involved in indole alkaloid biosynthesis of Catharanthus cell cultures.
Hemscheidt T., Zenk M.H.