Xem 1-7 trên 7 kết quả Translocon
  • The type III secretion system (T3SS) is a complex macromolecular machin-ery employed by a number of Gram-negative species to initiate infection. Toxins secreted through the system are synthesized in the bacterial cyto-plasm and utilize the T3SS to pass through both bacterial membranes and the periplasm, thus being introduced directly into the eukaryotic cytoplasm.

    pdf13p mobifone23 07-01-2013 21 2   Download

  • Cơ chế Công trình này sử dụng hệ thống dị thể (heterologous system) không có SecA nội sinh và các protein vi khuẩn khác để giải thích vai trò bài tiết chọn lọc protein vi khuẩn của SecA.

    pdf7p heoxinhkute4 28-09-2010 52 7   Download

  • Most integral membrane proteins are targeted, inserted and assembled in the endoplasmic reticulum membrane. The sequential and potentially over-lapping events necessary for membrane protein integration take place at sites termed translocons, which comprise a specific set of membrane pro-teins acting in concert with ribosomes and, probably, molecular chaperones to ensure the success of the whole process.

    pdf13p cosis54 04-01-2013 19 3   Download

  • Type III secretion systems of Gram-negative pathogenic bacteria allow the injection of effector proteins into the cytosol of host eukaryotic cells. Cros-sing of the eukaryotic plasma membrane is facilitated by a translocon, an oligomeric structure made up of two bacterial proteins inserted into the host membrane during infection.

    pdf10p galaxyss3 19-03-2013 11 2   Download

  • Most of the estimated 1000 or so chloroplast proteins are synthesized as cytosolic preproteins with N-terminal cleavable targeting sequences (transit peptide). Translocon complexes at the outer (Toc) and inner chloroplast envelope membrane (Tic) concertedly facilitate post-translational import of preproteins into the chloroplast.

    pdf10p vinaphone15 27-02-2013 13 1   Download

  • Twin-arginine translocation (Tat)-mediated protein trans-port across the bacterial cytoplasmicmembrane occurs only after synthesis and folding of the substrate protein that contains a signal peptide with a characteristic twin-arginine motif. This implies that premature contact between the Tat signal peptide and the Tat translocon in themembranemust be prevented. We used site-specific photo-crosslinking to demonstrate that the signal peptide of nascent Tat proteins is in close proximity to the chaperone and peptidyl-prolyl isomerase trigger factor (TF). ...

    pdf9p awards 05-04-2013 7 1   Download

  • Higher plant chloroplasts possess at least four different pathways for pro-tein translocation across and protein integration into the thylakoid mem-branes. It is of interest with respect to plastid evolution, which pathways have been retained as a relic from the cyanobacterial ancestor (‘conserva-tive sorting’), which ones have been kept but modified, and which ones were developed at the organelle stage, i.e. are eukaryotic achievements as (largely) the Toc and Tic translocons for envelope import of cytosolic pre-cursor proteins. ...

    pdf12p awards 05-04-2013 7 1   Download

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