Characterization and membrane assembly of the TatA component of the Escherichia coli twin-arginine protein transport system

Ida Porcelli, Erik de Leeuw, Russell Wallis, Els van den Brink-van der Laan, Ben de Kruijff, B A Wallace, Tracy Palmer, Ben C Berks

    Research output: Contribution to journalArticle

    88 Citations (Scopus)

    Abstract

    Proteins bearing a signal peptide with a consensus twin-arginine motif are translocated via the Tat pathway, a multiprotein system consisting minimally of the integral inner membrane proteins TatA, TatB, and TatC. On a molar basis, TatA is the major pathway component. Here we show that TatA can be purified independently of the other Tat proteins as a 460 kDa homooligomeric complex. Homooligomer formation requires the amino-terminal membrane-anchoring domain of TatA. According to circular dichroism spectroscopy, approximately half of the TatA polypeptide forms alpha-helical secondary structure in both detergent solution and proteoliposomes. An expressed construct without the transmembrane segment is largely unstructured in aqueous solution but is able to insert into phospholipid monolayers and interacts with membrane bilayers. Protease accessibility experiments indicate that the extramembranous region of TatA is located at the cytoplasmic face of the cell membrane.

    Original languageEnglish
    Pages (from-to)13690-13697
    Number of pages8
    JournalBiochemistry
    Volume41
    Issue number46
    DOIs
    Publication statusPublished - 19 Nov 2002

    Cite this

    Porcelli, I., de Leeuw, E., Wallis, R., van den Brink-van der Laan, E., de Kruijff, B., Wallace, B. A., ... Berks, B. C. (2002). Characterization and membrane assembly of the TatA component of the Escherichia coli twin-arginine protein transport system. Biochemistry, 41(46), 13690-13697. https://doi.org/10.1021/bi026142i
    Porcelli, Ida ; de Leeuw, Erik ; Wallis, Russell ; van den Brink-van der Laan, Els ; de Kruijff, Ben ; Wallace, B A ; Palmer, Tracy ; Berks, Ben C . / Characterization and membrane assembly of the TatA component of the Escherichia coli twin-arginine protein transport system. In: Biochemistry. 2002 ; Vol. 41, No. 46. pp. 13690-13697.
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    title = "Characterization and membrane assembly of the TatA component of the Escherichia coli twin-arginine protein transport system",
    abstract = "Proteins bearing a signal peptide with a consensus twin-arginine motif are translocated via the Tat pathway, a multiprotein system consisting minimally of the integral inner membrane proteins TatA, TatB, and TatC. On a molar basis, TatA is the major pathway component. Here we show that TatA can be purified independently of the other Tat proteins as a 460 kDa homooligomeric complex. Homooligomer formation requires the amino-terminal membrane-anchoring domain of TatA. According to circular dichroism spectroscopy, approximately half of the TatA polypeptide forms alpha-helical secondary structure in both detergent solution and proteoliposomes. An expressed construct without the transmembrane segment is largely unstructured in aqueous solution but is able to insert into phospholipid monolayers and interacts with membrane bilayers. Protease accessibility experiments indicate that the extramembranous region of TatA is located at the cytoplasmic face of the cell membrane.",
    author = "Ida Porcelli and {de Leeuw}, Erik and Russell Wallis and {van den Brink-van der Laan}, Els and {de Kruijff}, Ben and Wallace, {B A} and Tracy Palmer and Berks, {Ben C}",
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    Porcelli, I, de Leeuw, E, Wallis, R, van den Brink-van der Laan, E, de Kruijff, B, Wallace, BA, Palmer, T & Berks, BC 2002, 'Characterization and membrane assembly of the TatA component of the Escherichia coli twin-arginine protein transport system', Biochemistry, vol. 41, no. 46, pp. 13690-13697. https://doi.org/10.1021/bi026142i

    Characterization and membrane assembly of the TatA component of the Escherichia coli twin-arginine protein transport system. / Porcelli, Ida; de Leeuw, Erik; Wallis, Russell; van den Brink-van der Laan, Els ; de Kruijff, Ben; Wallace, B A ; Palmer, Tracy; Berks, Ben C .

    In: Biochemistry, Vol. 41, No. 46, 19.11.2002, p. 13690-13697.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Characterization and membrane assembly of the TatA component of the Escherichia coli twin-arginine protein transport system

    AU - Porcelli, Ida

    AU - de Leeuw, Erik

    AU - Wallis, Russell

    AU - van den Brink-van der Laan, Els

    AU - de Kruijff, Ben

    AU - Wallace, B A

    AU - Palmer, Tracy

    AU - Berks, Ben C

    PY - 2002/11/19

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    AB - Proteins bearing a signal peptide with a consensus twin-arginine motif are translocated via the Tat pathway, a multiprotein system consisting minimally of the integral inner membrane proteins TatA, TatB, and TatC. On a molar basis, TatA is the major pathway component. Here we show that TatA can be purified independently of the other Tat proteins as a 460 kDa homooligomeric complex. Homooligomer formation requires the amino-terminal membrane-anchoring domain of TatA. According to circular dichroism spectroscopy, approximately half of the TatA polypeptide forms alpha-helical secondary structure in both detergent solution and proteoliposomes. An expressed construct without the transmembrane segment is largely unstructured in aqueous solution but is able to insert into phospholipid monolayers and interacts with membrane bilayers. Protease accessibility experiments indicate that the extramembranous region of TatA is located at the cytoplasmic face of the cell membrane.

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    Porcelli I, de Leeuw E, Wallis R, van den Brink-van der Laan E, de Kruijff B, Wallace BA et al. Characterization and membrane assembly of the TatA component of the Escherichia coli twin-arginine protein transport system. Biochemistry. 2002 Nov 19;41(46):13690-13697. https://doi.org/10.1021/bi026142i