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-Structure paper
タイトル | Structure of the two-component S-layer of the archaeon . |
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ジャーナル・号・ページ | Elife, Vol. 13, Year 2024 |
掲載日 | 2024年1月22日 |
著者 | Lavinia Gambelli / Mathew McLaren / Rebecca Conners / Kelly Sanders / Matthew C Gaines / Lewis Clark / Vicki A M Gold / Daniel Kattnig / Mateusz Sikora / Cyril Hanus / Michail N Isupov / Bertram Daum / |
PubMed 要旨 | Surface layers (S-layers) are resilient two-dimensional protein lattices that encapsulate many bacteria and most archaea. In archaea, S-layers usually form the only structural component of the cell ...Surface layers (S-layers) are resilient two-dimensional protein lattices that encapsulate many bacteria and most archaea. In archaea, S-layers usually form the only structural component of the cell wall and thus act as the final frontier between the cell and its environment. Therefore, S-layers are crucial for supporting microbial life. Notwithstanding their importance, little is known about archaeal S-layers at the atomic level. Here, we combined single-particle cryo electron microscopy, cryo electron tomography, and Alphafold2 predictions to generate an atomic model of the two-component S-layer of . The outer component of this S-layer (SlaA) is a flexible, highly glycosylated, and stable protein. Together with the inner and membrane-bound component (SlaB), they assemble into a porous and interwoven lattice. We hypothesise that jackknife-like conformational changes in SlaA play important roles in S-layer assembly. |
リンク | Elife / PubMed:38251732 / PubMed Central |
手法 | EM (単粒子) / EM (サブトモグラム平均) |
解像度 | 3.1 - 11.2 Å |
構造データ | EMDB-14635, PDB-7zcx: EMDB-15530, PDB-8an2: EMDB-15531, PDB-8an3: EMDB-18127: S-layer of archaeon Sulfolobus acidocaldarius by subtomogram averaging |
化合物 | ChemComp-NAG: ChemComp-YZT: |
由来 |
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キーワード | STRUCTURAL PROTEIN (タンパク質) / S-layer (S層) / dimer / N-glycosylation (N-結合型グリコシル化) / archea |