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-Structure paper
| タイトル | RBPseg: Toward a complete phage tail fiber structure atlas. |
|---|---|
| ジャーナル・号・ページ | Sci Adv, Vol. 11, Issue 23, Page eadv0870, Year 2025 |
| 掲載日 | 2025年6月6日 |
著者 | Victor Klein-Sousa / Aritz Roa-Eguiara / Claudia S Kielkopf / Nicholas Sofos / Nicholas M I Taylor / ![]() |
| PubMed 要旨 | Bacteriophages use receptor-binding proteins (RBPs) to adhere to bacterial hosts, yet their sequence and structural diversity remain poorly understood. Tail fibers, a major class of RBPs, are ...Bacteriophages use receptor-binding proteins (RBPs) to adhere to bacterial hosts, yet their sequence and structural diversity remain poorly understood. Tail fibers, a major class of RBPs, are elongated and flexible trimeric proteins, making their full-length structures difficult to resolve experimentally. Advances in deep learning-based protein structure prediction, such as AlphaFold2-multimer (AF2M) and ESMFold, provide opportunities for studying these challenging proteins. Here, we introduce RBPseg, a method that combines monomeric ESMFold predictions with a structural-based domain identification approach, to divide tail fiber sequences into manageable fractions for high-confidence modeling with AF2M. Using this approach, we generated complete tail fiber models, validated by single-particle cryo-electron microscopy of five fibers from three phages. A structural classification of 67 fibers identified 16 distinct classes and 89 domains, revealing patterns of modularity, convergence, divergence, and domain swapping. Our findings suggest that these structural classes represent at least 24% of the known tail fiber universe, providing key insights into their evolution and functionality. |
リンク | Sci Adv / PubMed:40479047 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 9.46 - 10.13 Å |
| 構造データ | ![]() EMDB-51868: Escherichia phage EmilHeitz (Bas49) baseplate and tail fibers ![]() EMDB-51869: Escherichia phage MaxBurger (Bas54) baseplate and tail fibers ![]() EMDB-51870: Escherichia phage Paracelsus (Bas36) baseplate, proximal tail fiber and tail. |
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