Evidence map›Paper›PMID 24996798›Full record

ArticleExtremophiles : life under extreme conditions2014

Crystal structure and in silico studies of dihydrodipicolinate synthase (DHDPS) from Aquifex aeolicus.

Upasana Sridharan, Akio Ebihara, Seiki Kuramitsu, Shigeyuki Yokoyama, Thirumananseri Kumarevel, Karthe Ponnuraj

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Article in Extremophiles : life under extreme conditions, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.1field-weighted citation impact, top 51% of its field
1 · What the graph read from it

What it found

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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.

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3 · Its place in the literature

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2 citing papers in PubMed, 5 citations in OpenAlex.

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4 · The record

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5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Upasana SridharanCentre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai, 600 025, India.
Akio Ebihara
Seiki Kuramitsu
Shigeyuki Yokoyama
Thirumananseri Kumarevel
Karthe Ponnuraj
SPring-8 · JPUniversity of Madras · INThe University of Tokyo · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Dihydrodipicolinate synthase (DHDPS, E.C.4.2.1.52) catalyzes the first committed step in the lysine biosynthetic pathway: the condensation of (S)-aspartate semialdehyde and pyruvate to form (4S)-4-hydroxy-2,3,4,5-tetrahydro-(2S)-dipicolinic acid. Since (S)-lysine biosynthesis does not occur in animals, DHDPS is an attractive target for rational antibiotic and herbicide design. Here, we report the crystal structure of DHDPS from a hyperthermophilic bacterium Aquifex aeolicus (AqDHDPS). L-Lysine is used as an important animal feed additive where the production is at the level of 1.5 million tons per year. The biotechnological manufacture of lysine has been going for more than 50 years which includes over synthesis and reverse engineering of DHDPS. AqDHDPS revealed a unique disulfide linkage which is not conserved in the homologues of AqDHDPS. In silico mutation of C139A and intermolecular ion-pair residues and the subsequent molecular dynamics simulation of the mutants showed that these residues are critical for the stability of AqDHDPS tetramer. MD simulations of AqDHDPS at three different temperatures (303, 363 and 393 K) revealed that the molecule is stable at 363 K. Thus, this structural and in silico study of AqDHDPS likely provides additional details towards the rational and structure-based design of hyper-L-lysine producing bacterial strains.

Indexed as

Molecular Dynamics SimulationAllosteric SiteAmino Acid SequenceBacteriaBacterial ProteinsCatalytic DomainCrystallography, X-RayHydro-LyasesMolecular Sequence DataMutationProtein Stability4-hydroxy-tetrahydrodipicolinate synthaseBacterial ProteinsHydro-Lyases

Identifiers

PMID24996798
OpenAlexW2082183034

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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.