کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2049854 1543462 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The peripheral light-harvesting complexes from purple sulfur bacteria have different ‘ring’ sizes
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
The peripheral light-harvesting complexes from purple sulfur bacteria have different ‘ring’ sizes
چکیده انگلیسی

The integral membrane light-harvesting (LH) proteins from purple photosynthetic bacteria form circular oligomers of an elementary unit that is composed of two very hydrophobic polypeptides, termed α and β. These apoprotein dimers are known to associate into closed circular arrays of 8, 9 and 16 α/β-mers. We report the existence of peripheral LH proteins purified from Allochromatium vinosum with two intermediate ring sizes and postulate that one is a 13 α/β-mer. This shows that LH proteins are able to form membrane rings of continuously increasing diameter from 68 to 115 Å. The presence of these new ring sizes warrants further study, as it will help to further validate the structure–function models of LH proteins currently found in the literature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: FEBS Letters - Volume 582, Issues 25–26, 29 October 2008, Pages 3650–3656
نویسندگان
, , , , , , , ,