Evidence map›Paper›PMID 24475062›Full record

ArticlePloS one2014

Expression and properties of the highly alkalophilic phenylalanine ammonia-lyase of thermophilic Rubrobacter xylanophilus.

Klaudia Kovács, Gergely Bánóczi, Andrea Varga, Izabella Szabó, András Holczinger, Gábor Hornyánszky, Imre Zagyva, Csaba Paizs, Beáta G Vértessy, László Poppe

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

12 citing papers in PubMed, 35 citations in OpenAlex.

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  8. Purification and Characterization ofJournal of microbiology and biotechnology · 2020
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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

10 authors at 4 institutions in 2 countries.

Klaudia KovácsDepartment of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary ; Institute of Enzymology, Research Centre for Natural Sciences of Hungarian Academy of Sciences, Budapest, Hungary.
Gergely BánócziDepartment of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary.
Andrea VargaBiocatalysis Research Group, Babeş-Bolyai University of Cluj-Napoca, Cluj-Napoca, Romania.
Izabella SzabóBiocatalysis Research Group, Babeş-Bolyai University of Cluj-Napoca, Cluj-Napoca, Romania.
András HolczingerDepartment of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Budapest, Hungary.
Gábor HornyánszkyDepartment of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary.
Imre ZagyvaInstitute of Enzymology, Research Centre for Natural Sciences of Hungarian Academy of Sciences, Budapest, Hungary.
Csaba PaizsBiocatalysis Research Group, Babeş-Bolyai University of Cluj-Napoca, Cluj-Napoca, Romania.
Beáta G VértessyInstitute of Enzymology, Research Centre for Natural Sciences of Hungarian Academy of Sciences, Budapest, Hungary ; Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Budapest, Hungary.
László PoppeDepartment of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary.
Budapest University of Technology and Economics · HUBabeș-Bolyai University · ROInstitute of Molecular Life Sciences · HUHungarian Academy of Sciences · HU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The sequence of a phenylalanine ammonia-lyase (PAL; EC: 4.3.1.24) of the thermophilic and radiotolerant bacterium Rubrobacter xylanophilus (RxPAL) was identified by screening the genomes of bacteria for members of the phenylalanine ammonia-lyase family. A synthetic gene encoding the RxPAL protein was cloned and overexpressed in Escherichia coli TOP 10 in a soluble form with an N-terminal His6-tag and the recombinant RxPAL protein was purified by Ni-NTA affinity chromatography. The activity assay of RxPAL with l-phenylalanine at various pH values exhibited a local maximum at pH 8.5 and a global maximum at pH 11.5. Circular dichroism (CD) studies showed that RxPAL is associated with an extensive α-helical character (far UV CD) and two distinctive near-UV CD peaks. These structural characteristics were well preserved up to pH 11.0. The extremely high pH optimum of RxPAL can be rationalized by a three-dimensional homology model indicating possible disulfide bridges, extensive salt-bridge formation and an excess of negative electrostatic potential on the surface. Due to these properties, RxPAL may be a candidate as biocatalyst in synthetic biotransformations leading to unnatural l- or d-amino acids or as therapeutic enzyme in treatment of phenylketonuria or leukemia.

Indexed as

Models, MolecularActinobacteriaAmino Acid SequenceBase SequenceChromatography, AffinityCircular DichroismCloning, MolecularDNA PrimersEscherichia coliHydrogen-Ion ConcentrationMolecular Sequence DataPhenylalanine Ammonia-LyaseProtein ConformationSequence Analysis, DNASequence HomologySpecies SpecificityDNA PrimersPhenylalanine Ammonia-Lyase

Identifiers

PMID24475062
PMCPMC3903478
OpenAlexW1979744526

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.