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-Structure paper
タイトル | Three-dimensional structure of bacteriophage T4 baseplate. |
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ジャーナル・号・ページ | Nat Struct Biol, Vol. 10, Issue 9, Page 688-693, Year 2003 |
掲載日 | 2003年8月17日 |
著者 | Victor A Kostyuchenko / Petr G Leiman / Paul R Chipman / Shuji Kanamaru / Mark J van Raaij / Fumio Arisaka / Vadim V Mesyanzhinov / Michael G Rossmann / |
PubMed 要旨 | The baseplate of bacteriophage T4 is a multiprotein molecular machine that controls host cell recognition, attachment, tail sheath contraction and viral DNA ejection. We report here the three- ...The baseplate of bacteriophage T4 is a multiprotein molecular machine that controls host cell recognition, attachment, tail sheath contraction and viral DNA ejection. We report here the three-dimensional structure of the baseplate-tail tube complex determined to a resolution of 12 A by cryoelectron microscopy. The baseplate has a six-fold symmetric, dome-like structure approximately 520 A in diameter and approximately 270 A long, assembled around a central hub. A 940 A-long and 96 A-diameter tail tube, coaxial with the hub, is connected to the top of the baseplate. At the center of the dome is a needle-like structure that was previously identified as a cell puncturing device. We have identified the locations of six proteins with known atomic structures, and established the position and shape of several other baseplate proteins. The baseplate structure suggests a mechanism of baseplate triggering and structural transition during the initial stages of T4 infection. |
リンク | Nat Struct Biol / PubMed:12923574 |
手法 | EM (単粒子) |
解像度 | 12.0 Å |
構造データ | EMDB-1048: Three-dimensional structure of bacteriophage T4 baseplate. |
由来 |
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キーワード | STRUCTURAL PROTEIN / HYDROLASE |