Cited by 74Selenium in Biological SystemsOrganoselenium and organotellurium chemistryRedox biology and oxidative stress

Substrate‐specific selenoprotein B of glycine reductase from Eubacterium acidaminophilum: Biochemical and molecular analysis

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Wagner, Matthias, Sonntag, Denise, Grimm, Rudolf, Pich, Andreas, Eckerskorn, Christoph, Söhling, Brigitte, Andreesen, Jan R.·1999·European Journal of Biochemistry

Abstract

The substrate‐specific selenoprotein B of glycine reductase (PB glycine) from Eubacterium acidaminophilum was purified and characterized. The enzyme consisted of three different subunits with molecular masses of about 22 (α), 25 (β) and 47 kDa (γ), probably in an α 2 β 2 γ 2 composition. PB glycine purified from cells grown in the presence of [75 Se]selenite was labeled in the 47‐kDa subunit. The 22‐kDa and 47‐kDa subunits both reacted with fluorescein thiosemicarbazide, indicating the presence of a carbonyl compound. This carbonyl residue prevented N‐terminal sequencing of the 22‐kDa (α) subunit, but it could be removed for Edman degradation by incubation with o‐phenylenediamine. A DNA fragment was isolated and sequenced which encoded β and α subunits of PB glycine (grdE), followed by a gene encoding selenoprotein A (grdA2) and the γ subunit of PB glycine (grdB2). The cloned DNA fragment represented a second GrdB‐encoding gene slightly different from a previously identified partial grdB1‐containing fragment. Both grdB genes contained an in‐frame UGA codon which confirmed the observed selenium content of the 47‐kDa (γ) subunit. Peptide sequence analyses suggest that grdE encodes a proprotein which is cleaved into the previously sequenced N‐terminal 25‐kDa (β) subunit and a 22‐kDa (α) subunit of PB glycine. Cleavage most probably occurred at an ‐Asn‐Cys‐ site concomitantly with the generation of the blocking carbonyl moiety from cysteine at the α subunit.

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Crossref · 10.1046/j.1432-1327.1999.00107.x

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  • In PREDIMED, there was no association between Mediterranean diet and heart failure incidence.

    “A pre-specified secondary outcome for heart failure incidence was investigated in PREDIMED, but there was no association between diet and heart failure incidence223.”

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Research works printed but not linked: 2

  1. Lu Èbbers, M. (1993) Klonierung, Sequenzierung und Analyse von Genen des Thioredoxin-Systems und der Glycin-Reduktase aus Eubacterium acidaminophilum. PhD Thesis, Go Èttingen.
  2. Arkowitz, R.A. (1991) The mechanism of of action of clostridial glycine reductase: isolation and characterization of two covalent intermedi- ates. PhD Thesis, Brandeis University.

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Authors
Wagner, M., Sonntag, D., Grimm, R., Pich, A., Eckerskorn, C., Söhling, B., & Andreesen, J. R.
Affiliations
  • Martin Luther University Halle-Wittenberg (DE)
  • Max Planck Institute of Biochemistry (DE)
Venue
European Journal of Biochemistry
Publisher
Wiley
Published
1999-02-05
Volume
260
Issue
1
Pages
38-49
ISSN
  • 0014-2956 (ISSN-L)
  • 1432-1033
OpenAlex
W1600998909
Cited by
74
References
57
Citations by year
2025: 2 · 2024: 2 · 2023: 4 · 2022: 1 · 2021: 2 · 2020: 3 · 2019: 6 · 2018: 3 · 2017: 3 · 2016: 1 · 2015: 3 · 2013: 2 · 2012: 1
FWCI
4.74
Type
journal article
Language
en
Open access
Locations
  • European Journal of Biochemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Deutsche Forschungsgemeinschaft
  • Max-Planck-Gesellschaft
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Selenium in Biological Systems
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Toxicology › Organoselenium and organotellurium chemistry
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
glycine reductase, protein subunit composition, UGA codon, gene cloning, enzyme purification
MeSH terms
Amino Acid Oxidoreductases, Amino Acid Sequence, Bacterial Proteins, Base Sequence, Cell Division, Cloning, Molecular, Eubacterium, Genes, Bacterial, Models, Biological, Molecular Sequence Data, Multienzyme Complexes, Proteins, Selenium Radioisotopes, Substrate Specificity, Sequence Alignment, Sequence Analysis, DNA, Selenoproteins

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