کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10873412 | 1074277 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural organization of the twin-arginine translocation system in Streptomyces lividans
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کلمات کلیدی
PBSStreptomyces lividansIPTGTCAGSTNHSgluthatione s-transferaseN-hydroxysuccinimideDMSO - DMSOSDS–PAGE - SDS-PAGEtrichloroacetic acid - اسید ترشکلراکتیکsodium dodecyl sulphate–polyacrylamide gel electrophoresis - الکتروفورز ژل دوده سولفات سدیم پلی آکریل آمیدisopropyl-β-d-thiogalactopyranoside - ایزوپروپیل-ب-دی-تیوگالکتوپیرانوزیدtwin-arginine translocase - ترنسپاز دوقلو آرژنینDimethyl sulfoxide - دیمتیل سولفواکسیدMembrane protein complex - مجتمع پروتئین غشاییPhosphate-buffered saline - محلول نمک فسفات با خاصیت بافری
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The twin-arginine translocation (Tat) system exports folded proteins across bacterial cytoplasmic membranes. Recently, genes encoding TatA, TatB and TatC homologues were identified in Streptomyces lividans and the functionality of the Tat pathway was demonstrated. Here, we have examined the localization and structural organization of the Tat components in S. lividans. Interestingly, besides being membrane-associated proteins, S. lividans TatA and TatB were also detected in the cytoplasm. TatC could only be detected in isolated membrane fractions. Whereas all TatC was found to be stably inserted in the membrane, part of membrane-associated TatA and TatB could be extracted following high salt, sodium carbonate or urea treatment suggesting a more loose association with the membrane. Finally, we have analyzed Tat complexes that could be purified from an S. lividans TatABC overproducing strain. From the cytoplasmic membrane, two types of high molecular mass Tat complexes could be isolated having a similar composition as those isolated from Escherichia coli. In the cytoplasm, TatA and TatB were detected as monomer or as homo-oligomeric complexes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: FEBS Letters - Volume 579, Issue 3, 31 January 2005, Pages 797-802
Journal: FEBS Letters - Volume 579, Issue 3, 31 January 2005, Pages 797-802
نویسندگان
Sophie De Keersmaeker, Lieve Van Mellaert, Kristien Schaerlaekens, Wesley Van Dessel, Kristof Vrancken, Elke Lammertyn, Jozef Anné, Nick Geukens,