Evidence map›Paper›PMID 18570438›Full record

ArticleBiochemistry2008

Probing the active center of benzaldehyde lyase with substitutions and the pseudosubstrate analogue benzoylphosphonic acid methyl ester.

Gabriel S Brandt, Natalia Nemeria, Sumit Chakraborty, Michael J McLeish, Alejandra Yep, George L Kenyon, Gregory A Petsko, Frank Jordan, Dagmar Ringe

Open access · greenAbstract read
In one paragraph

Article in Biochemistry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.5field-weighted citation impact, top 11% 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

14 citing papers in PubMed, 42 citations in OpenAlex.

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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

9 authors at 3 institutions in 1 country.

Gabriel S BrandtDepartment of Biochemistry, Brandeis University, Waltham, Massachusetts 02454, USA.
Natalia Nemeria
Sumit Chakraborty
Michael J McLeish
Alejandra Yep
George L Kenyon
Gregory A Petsko
Frank Jordan
Dagmar Ringe
Brandeis University · USRutgers, The State University of New Jersey · USUniversity of Michigan–Ann Arbor · US

Funding

STRUCTURE AND MECHANISM OF YEAST PYRUVATE DECARBOXYLASER01GM050380 · NIGMS · RUTGERS THE STATE UNIV OF NJ NEWARK · PI JORDAN, FRANK · 1993 to 2013
$3.0M
Mechanistic studies on a bimetallic aminopeptidaseF32GM069057 · NIGMS · BRANDEIS UNIVERSITY · PI BRANDT, GABRIEL S · 2003 to 2005
$131k
NCRR NIH HHS RR007707NIGMS NIH HHS F32 GM069057NIGMS NIH HHS F32GM069057NIGMS NIH HHS GM050380NIGMS NIH HHS R01 GM050380
6 · The paper itself

Abstract

Benzaldehyde lyase (BAL) catalyzes the reversible cleavage of ( R)-benzoin to benzaldehyde utilizing thiamin diphosphate and Mg (2+) as cofactors. The enzyme is important for the chemoenzymatic synthesis of a wide range of compounds via its carboligation reaction mechanism. In addition to its principal functions, BAL can slowly decarboxylate aromatic amino acids such as benzoylformic acid. It is also intriguing mechanistically due to the paucity of acid-base residues at the active center that can participate in proton transfer steps thought to be necessary for these types of reactions. Here methyl benzoylphosphonate, an excellent electrostatic analogue of benzoylformic acid, is used to probe the mechanism of benzaldehyde lyase. The structure of benzaldehyde lyase in its covalent complex with methyl benzoylphosphonate was determined to 2.49 A (Protein Data Bank entry 3D7K ) and represents the first structure of this enzyme with a compound bound in the active site. No large structural reorganization was detected compared to the complex of the enzyme with thiamin diphosphate. The configuration of the predecarboxylation thiamin-bound intermediate was clarified by the structure. Both spectroscopic and X-ray structural studies are consistent with inhibition resulting from the binding of MBP to the thiamin diphosphate in the active centers. We also delineated the role of His29 (the sole potential acid-base catalyst in the active site other than the highly conserved Glu50) and Trp163 in cofactor activation and catalysis by benzaldehyde lyase.

Indexed as

Aldehyde-LyasesBenzaldehydesBenzoinBinding SitesCircular DichroismCrystallography, X-RayKineticsModels, MolecularSubstrate SpecificityThiamine PyrophosphateAldehyde-Lyasesbenzaldehydebenzaldehyde lyaseBenzaldehydesBenzoinThiamine Pyrophosphate

Identifiers

PMID18570438
PMCPMC2729719
OpenAlexW2077412380

What OpenQuestion holds

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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.