ジャーナル: Nat Commun / 年: 2025 タイトル: Molecular basis of host recognition of human coronavirus 229E. 著者: Yu-Xi Tsai / Yu-Chun Chien / Min-Feng Hsu / Kay-Hooi Khoo / Shang-Te Danny Hsu / 要旨: Human coronavirus 229E (HCoV-229E) is the earliest CoV found to infect humans. It binds to the human aminopeptidase N (hAPN) through the receptor binding domain (RBD) of its spike (S) protein to ...Human coronavirus 229E (HCoV-229E) is the earliest CoV found to infect humans. It binds to the human aminopeptidase N (hAPN) through the receptor binding domain (RBD) of its spike (S) protein to achieve host recognition. We present the cryo-electron microscopy structure of two HCoV-229E S protein in complex with a dimeric hAPN to provide structural insights on how the HCoV-229E S protein opens up its RBD to engage with its host receptor, information that is currently missing among alphacoronaviruses to which HCoV-229E belong. We quantitatively profile the glycosylation of HCoV-229E S protein and hAPN to deduce the glyco-shielding effects pertinent to antigenicity and host recognition. Finally, we present an atomic model of fully glycosylated HCoV-229E S in complex with hAPN anchored on their respective membrane bilayers to recapitulate the structural basis of the first step of host infection by HCoV-229E.
全体 : Local refinement of dimeric hAPN and the receptor binding domain ...
全体
名称: Local refinement of dimeric hAPN and the receptor binding domain as well as the hinge region of single S protein
要素
複合体: Local refinement of dimeric hAPN and the receptor binding domain as well as the hinge region of single S protein
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超分子 #1: Local refinement of dimeric hAPN and the receptor binding domain ...
超分子
名称: Local refinement of dimeric hAPN and the receptor binding domain as well as the hinge region of single S protein タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#5
由来(天然)
生物種: Human coronavirus 229E (ヒトコロナウイルス 229E)
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実験情報
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構造解析
手法
クライオ電子顕微鏡法
解析
単粒子再構成法
試料の集合状態
particle
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試料調製
緩衝液
pH: 7.6
凍結
凍結剤: ETHANE
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電子顕微鏡法
顕微鏡
FEI TITAN KRIOS
撮影
フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 50.0 e/Å2