ISDA

Deposition Date 2019-05-22

Release Date 2020-03-04

Last Version Date 2024-01-24

Entry Detail

PDB ID:

6RT8

Keywords:

HYDROLASE

Title:

Structure of catharanthine synthase - an alpha-beta hydrolase from Catharanthus roseus with a cleaviminium intermediate bound

Biological Source:

Source Organism:

Catharanthus roseus (Taxon ID: 4058)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.19 Å

R-Value Free:

0.23

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

P 1 21 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Catharanthine synthase
Gene (Uniprot):CS
Mutations:Native N-terminal MET is replaced by a GLY-PRO dipeptide left over from cleavage of the affinity tag
Chain IDs:A, B, C, D, E, F, G, H
Chain Length:330
Number of Molecules:8
Biological Source:Catharanthus roseus

UniProt ID:A0A2P1GIW2 Pfam ID:PF07859

Ligand Molecules

KJE

P6G

Primary Citation

Structural basis of cycloaddition in biosynthesis of iboga and aspidosperma alkaloids.

Caputi, L, Franke, J, Bussey, K, Farrow, S.C, Vieira, I.J.C, Stevenson, C.E.M, Lawson, D.M, O'Connor, S.E.Show

Nat.Chem.Biol. 16 383 386 (2020)

PMID: 32066966 DOI: 10.1038/s41589-019-0460-x

Abstact

Cycloaddition reactions generate chemical complexity in a single step. Here we report the crystal structures of three homologous plant-derived cyclases involved in the biosynthesis of iboga and aspidosperma alkaloids. These enzymes act on the same substrate, named angryline, to generate three distinct scaffolds. Mutational analysis reveals how these highly similar enzymes control regio- and stereo-selectivity.

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Primary Citation of related structures