6PO6

MicroED Structure of a Natural Product VFAThiaGlu


Experimental Data Snapshot

  • Method: ELECTRON CRYSTALLOGRAPHY
  • Resolution: 1.00 Å

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Use of a scaffold peptide in the biosynthesis of amino acid-derived natural products.

Ting, C.P.Funk, M.A.Halaby, S.L.Zhang, Z.Gonen, T.van der Donk, W.A.

(2019) Science 365: 280-284

  • DOI: 10.1126/science.aau6232
  • Primary Citation of Related Structures:  
    6PO6

  • PubMed Abstract: 
  • Genome sequencing of environmental bacteria allows identification of biosynthetic gene clusters encoding unusual combinations of enzymes that produce unknown natural products. We identified a pathway in which a ribosomally synthesized small peptide serves as a scaffold for nonribosomal peptide extension and chemical modification ...

    Genome sequencing of environmental bacteria allows identification of biosynthetic gene clusters encoding unusual combinations of enzymes that produce unknown natural products. We identified a pathway in which a ribosomally synthesized small peptide serves as a scaffold for nonribosomal peptide extension and chemical modification. Amino acids are transferred to the carboxyl terminus of the peptide through adenosine triphosphate and amino acyl-tRNA-dependent chemistry that is independent of the ribosome. Oxidative rearrangement, carboxymethylation, and proteolysis of a terminal cysteine yields an amino acid-derived small molecule. Microcrystal electron diffraction demonstrates that the resulting product is isosteric to glutamate. We show that a similar peptide extension is used during the biosynthesis of the ammosamides, which are cytotoxic pyrroloquinoline alkaloids. These results suggest an alternative paradigm for biosynthesis of amino acid-derived natural products.


    Organizational Affiliation

    Howard Hughes Medical Institute, University of Illinois at Urbana-Champaign, Urbana, IL, USA.



Macromolecules
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
YFAThiaGluA4Pseudomonas syringaeMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 9.66α = 90
b = 9.58β = 94
c = 12.14γ = 90
Software Package:
Software NamePurpose
SHELXrefinement

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesR37 GM058822
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesF32 GM129944
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesF32 GM120868

Revision History  (Full details and data files)

  • Version 1.0: 2019-08-07
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Author supporting evidence