کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2039898 1073088 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Binding of Macrolide Antibiotics Leads to Ribosomal Selection against Specific Substrates Based on Their Charge and Size
ترجمه فارسی عنوان
اتصال آنتی بیوتیک های ماکرولید منجر به انتخاب ریبوسوم در برابر اسید های خاص براساس میزان شارژ و اندازه آنها می شود.
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
چکیده انگلیسی


• Macrolide antibiotics induce ribosome stalling at Arg/Lys-X-Arg/Lys motifs
• The size and charge of key residue side chains hinder peptide bond formation
• Properties of the nascent protein affect the catalytic capacity of the ribosome

SummaryMacrolide antibiotic binding to the ribosome inhibits catalysis of peptide bond formation between specific donor and acceptor substrates. Why particular reactions are problematic for the macrolide-bound ribosome remains unclear. Using comprehensive mutational analysis and biochemical experiments with synthetic substrate analogs, we find that the positive charge of these specific residues and the length of their side chains underlie inefficient peptide bond formation in the macrolide-bound ribosome. Even in the absence of antibiotic, peptide bond formation between these particular donors and acceptors is rather inefficient, suggesting that macrolides magnify a problem present for intrinsically difficult substrates. Our findings emphasize the existence of functional interactions between the nascent protein and the catalytic site of the ribosomal peptidyl transferase center.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: - Volume 16, Issue 7, 16 August 2016, Pages 1789–1799
نویسندگان
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