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.
ダウンロード / ファイル: emd_38816.map.gz / 形式: CCP4 / 大きさ: 824 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
ボクセルのサイズ
X=Y=Z: 1.476 Å
密度
表面レベル
登録者による: 1.0
最小 - 最大
-11.075710000000001 - 23.032693999999999
平均 (標準偏差)
-0.0013061429 (±0.0647191)
対称性
空間群: 1
詳細
EMDB XML:
マップ形状
Axis order
X
Y
Z
Origin
0
0
0
サイズ
600
600
600
Spacing
600
600
600
セル
A=B=C: 885.60004 Å α=β=γ: 90.0 °
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添付データ
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試料の構成要素
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全体 : CryoEM structure of the spike protein of human CoV 229E in comple...
全体
名称: CryoEM structure of the spike protein of human CoV 229E in complex with receptor hAPN (composite map)
要素
複合体: CryoEM structure of the spike protein of human CoV 229E in complex with receptor hAPN (composite map)
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超分子 #1: CryoEM structure of the spike protein of human CoV 229E in comple...
超分子
名称: CryoEM structure of the spike protein of human CoV 229E in complex with receptor hAPN (composite map) 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