Cited by 177Bacterial Genetics and BiotechnologyDrug Transport and Resistance MechanismsHeat shock proteins research

Protein translocation across the inner membrane of Gram-negative bacteria: the Sec and Tat dependent protein transport pathways.

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Kudva, Renuka, Denks, Kärt, Kuhn, Patrick, Vogt, Andreas, Müller, Matthias, Koch, Hans-Georg·2013·Research in Microbiology

Abstract

Gram negative bacteria possess a large variety of protein transport systems, by which proteins that are synthesised in the cytosol are exported to destinations in the cell envelope or entirely secreted into the extracellular environment. The inner membrane (IM) contains three major transport systems for the translocation and insertion of signal sequence containing proteins: the Sec translocon, the YidC insertase, and the Tat system. The heterotrimeric SecYEG translocon forms a narrow channel in the membrane that serves a dual function; it allows the translocation of unfolded proteins across the pore and the integration of α-helical proteins into the IM. The YidC insertase is a multi-spanning membrane protein that cooperates with the SecYEG translocon during the integration of membrane proteins but also functions as an independent insertase. Depending upon the type of protein cargo that needs to be transported, the Signal Recognition Particle (SRP), the SRP receptor, SecA and chaperones are required to coordinate translation with transport and to target and energise the different transport systems. The Tat system consists of three membrane proteins (TatA, TatB and TatC) which in a still unknown manner accomplish the transmembrane passage of completely folded proteins and protein complexes.

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Crossref · 10.1016/j.resmic.2013.03.016

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  • The SecYEG translocon is universally conserved and mediates the translocation of newly synthesized proteins into and across the cytoplasmic membrane.

    “The universally conserved SecYEG translocon acts at the center of bacterial protein transport and mediates the translocation of newly synthesized proteins into and across the cytoplasmic membrane.”

    From The Dynamic SecYEG Translocon (2021) · cites this paper as Kudva et al., 2013

  • In E. coli, SecA is present in about 2,000-5,000 copies per cell and is much more abundant than the SecYEG complex, which exists in about 500 copies.

    “In E. coli it is present in about 2,000–5,000 copies per cell (Kudva et al., 2013; Smets et al., 2019) and therefore much more abundant than the SecYEG complex, which exists in about 500 copies (Kudva et al., 2013).”

    From The Dynamic SecYEG Translocon (2021) · cites this paper as Kudva et al., 2013

  • FtsY and SecA have comparable affinities for the SecYEG translocon and are present in comparable copy numbers in E. coli.

    “FtsY and SecA have comparable affinities for the SecYEG translocon and are present in comparable copy numbers in E. coli (Douville et al., 1995; Kudva et al., 2013; Kuhn et al., 2015)”

    From The Dynamic SecYEG Translocon (2021) · cites this paper as Kudva et al., 2013

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Research works printed but not linked: 1

  1. Kuhn, P., Kudva, R., Welte, T., Sturm, L., Koch, H.G., 2013. In: Fronzes, R., Remault, H. (Eds.), Targeting and Integration of Bacterial Membrane Proteins. Bacterial Membranes, Structure and Molecular Biology. Horizon Scientific Press. in press.

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Authors
Kudva, R., Denks, K., Kuhn, P., Vogt, A., Müller, M., & Koch, H.-G.
Affiliations
University of Freiburg (DE)
Corresponding author
  • Müller, Matthias
  • Koch, Hans-Georg
Venue
Research in Microbiology
Publisher
Elsevier BV
Published
2013-07
Volume
164
Issue
6
Pages
505-534
ISSN
  • 0769-2609 (ISSN-L)
  • 0923-2508
OpenAlex
W1979649414
Cited by
177
References
402
Citations by year
2026: 5 · 2025: 9 · 2024: 6 · 2023: 10 · 2022: 13 · 2021: 12 · 2020: 14 · 2019: 14 · 2018: 11 · 2017: 14 · 2016: 16 · 2015: 29 · 2014: 18 · 2013: 6
FWCI
15.26
Type
journal article
Language
en
Open access
Locations
  • Research in Microbiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft (GSC‐4, FOR 967, SFB-746, FOR 929)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
Keywords
protein translocation, Gram-negative bacteria, inner membrane, Sec translocon, Tat system, SecYEG translocon, signal recognition particle, SecA, molecular chaperones, membrane protein insertion, protein secretion, TatA, TATB, TatC
MeSH terms
Bacterial Proteins, Cell Membrane, Gram-Negative Bacteria, Protein Transport, Bacterial Secretion Systems

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