Evidence map›Paper›PMID 21325056›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2011

Structural basis for nonribosomal peptide synthesis by an aminoacyl-tRNA synthetase paralog.

Luc Bonnefond, Taiga Arai, Yuriko Sakaguchi, Tsutomu Suzuki, Ryuichiro Ishitani, Osamu Nureki

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
2.7field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

47 citing papers in PubMed, 91 citations in OpenAlex.

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  19. Pulcherrimin formation controls growth arrest of theProceedings of the National Academy of Sciences of the United States of America · 2019
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Luc BonnefondDepartment of Biophysics and Biochemistry, Graduate School of Science, University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, 113-0032 Tokyo, Japan.
Taiga Arai
Yuriko Sakaguchi
Tsutomu Suzuki
Ryuichiro Ishitani
Osamu Nureki
The University of Tokyo · JPTokyo University of Science · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cyclodipeptides are secondary metabolites biosynthesized by many bacteria and exhibit a wide array of biological activities. Recently, a new class of small proteins, named cyclodipeptide synthases (CDPS), which are unrelated to the typical nonribosomal peptide synthetases, was shown to generate several cyclodipeptides, using aminoacyl-tRNAs as substrates. The Mycobacterium tuberculosis CDPS, Rv2275, was found to generate cyclodityrosine through the formation of an aminoacyl-enzyme intermediate and to have a structure and oligomeric state similar to those of the class Ic aminoacyl-tRNA synthetases (aaRSs). However, the poor sequence conservation among CDPSs has raised questions about the architecture and catalytic mechanism of the identified homologs. Here we report the crystal structures of Bacillus licheniformis CDPS YvmC-Blic, in the apo form and complexed with substrate mimics, at 1.7-2.4-Å resolutions. The YvmC-Blic structure also exhibits similarity to the class Ic aaRSs catalytic domain. Our mutational analysis confirmed the importance of a set of residues for cyclodileucine formation among the conserved residues localized in the catalytic pocket. Our biochemical data indicated that YvmC-Blic binds tRNA and generates cyclodileucine as a monomer. We were also able to detect the presence of an aminoacyl-enzyme reaction intermediate, but not a dipeptide tRNA intermediate, whose existence was postulated for Rv2275. Instead, our results support a sequential catalytic mechanism for YvmC-Blic, with the successive attachment of two leucine residues on the enzyme via a conserved serine residue. Altogether, our findings suggest that all CDPS enzymes share a common aaRS-like architecture and a catalytic mechanism involving the formation of an enzyme-bound intermediate.

Indexed as

Amino Acyl-tRNA SynthetasesBiocatalysisCrystallography, X-RayModels, MolecularPeptidesProtein ConformationSubstrate SpecificityAmino Acyl-tRNA SynthetasesPeptides

Identifiers

PMID21325056
PMCPMC3053990
OpenAlexW2067866641

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.