ISDA: 5YY3

Deposition Date 2017-12-07

Release Date 2018-08-01

Last Version Date 2024-03-27

Entry Detail

PDB ID:

5YY3

Keywords:

METAL BINDING PROTEIN

Title:

Crystal structure of AsqI

Biological Source:

Source Organism:

Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139) (Taxon ID: 227321)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.31 Å

R-Value Free:

0.21

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

I 2 2 2

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Uncharacterized protein AsqI
Gene (Uniprot):asqI
Chain IDs:A
Chain Length:749
Number of Molecules:1
Biological Source:Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139)

UniProt ID:C8VJQ3 Pfam ID:PF00372, PF03723

Primary Citation

Enzymatic one-step ring contraction for quinolone biosynthesis.

Kishimoto, S, Hara, K, Hashimoto, H, Hirayama, Y, Champagne, P.A, Houk, K.N, Tang, Y, Watanabe, K.Show

Nat Commun 9 2826 2826 (2018)

PMID: 30026518 DOI: 10.1038/s41467-018-05221-5

Abstact

The 6,6-quinolone scaffolds on which viridicatin-type fungal alkaloids are built are frequently found in metabolites that display useful biological activities. Here we report in vitro and computational analyses leading to the discovery of a hemocyanin-like protein AsqI from the Aspergillus nidulans aspoquinolone biosynthetic pathway that forms viridicatins via a conversion of the cyclopenin-type 6,7-bicyclic system into the viridicatin-type 6,6-bicyclic core through elimination of carbon dioxide and methylamine through methyl isocyanate.

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Abstact

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