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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 1hqn | ||||||
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タイトル | THE SELENOMETHIONINE DERIVATIVE OF P3, THE MAJOR COAT PROTEIN OF THE LIPID-CONTAINING BACTERIOPHAGE PRD1. | ||||||
![]() | MAJOR CAPSID PROTEIN | ||||||
![]() | VIRAL PROTEIN / bacteriophage PRD1 / Coat protein / jelly roll / viral beta barrel | ||||||
機能・相同性 | ![]() | ||||||
生物種 | ![]() ![]() | ||||||
手法 | ![]() ![]() ![]() | ||||||
![]() | Benson, S.D. / Bamford, J.K.H. / Bamford, D.H. / Burnett, R.M. | ||||||
![]() | ![]() タイトル: The X-ray crystal structure of P3, the major coat protein of the lipid-containing bacteriophage PRD1, at 1.65 A resolution. 著者: Stacy D Benson / Jaana K H Bamford / Dennis H Bamford / Roger M Burnett / ![]() 要旨: P3 has been imaged with X-ray crystallography to reveal a trimeric molecule with strikingly similar characteristics to hexon, the major coat protein of adenovirus. The structure of native P3 has now ...P3 has been imaged with X-ray crystallography to reveal a trimeric molecule with strikingly similar characteristics to hexon, the major coat protein of adenovirus. The structure of native P3 has now been extended to 1.65 A resolution (R(work) = 19.0% and R(free) = 20.8%). The new high-resolution model shows that P3 forms crystals through hydrophobic patches solvated by 2-methyl-2,4-pentanediol molecules. It reveals details of how the molecule's high stability may be achieved through ordered solvent in addition to intra- and intersubunit interactions. Of particular importance is a 'puddle' at the top of the molecule containing a four-layer deep hydration shell that cross-links a complex structural feature formed by 'trimerization loops'. These loops also link subunits by extending over a neighbor to reach the third subunit in the trimer. As each subunit has two eight-stranded viral jelly rolls, the trimer has a pseudo-hexagonal shape to allow close packing in its 240 hexavalent capsid positions. Flexible regions in P3 facilitate these interactions within the capsid and with the underlying membrane. A selenometh-ionine P3 derivative, with which the structure was solved, has been refined to 2.2 A resolution (R(work) = 20.1% and R(free) = 22.8%). The derivatized molecule is essentially unchanged, although synchrotron radiation has the curious effect of causing it to rotate about its threefold axis. P3 is a second example of a trimeric 'double-barrel' protein that forms a stable building block with optimal shape for constructing a large icosahedral viral capsid. A major difference is that hexon has long variable loops that distinguish different adenovirus species. The short loops in P3 and the severe constraints of its various interactions explain why the PRD1 family has highly conserved coat proteins. #1: ![]() タイトル: Viral evolution revealed by bacteriophage PRD1 and human adenovirus coat protein structures 著者: Benson, S.D. / Bamford, J.K.H. / Bamford, D.H. / Burnett, R.M. #2: ![]() タイトル: Crystallization of the major coat protein of PRD1, a bacteriophage with an internal membrane 著者: Stewart, P.L. / Ghosh, S. / Bamford, D.H. / Burnett, R.M. #3: ![]() タイトル: Capsomer proteins of bacteriophage PRD1, a bacterial virus with a membrane 著者: Bamford, J.K.H. / Bamford, D.H. #4: ![]() タイトル: Type-specific epitope locations revealed by X-ray crystallographic study of adenovirus type 5 hexon 著者: Rux, J.J. / Burnett, R.M. | ||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 227.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 183.9 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 449 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 479.6 KB | 表示 | |
XML形式データ | ![]() | 53 KB | 表示 | |
CIF形式データ | ![]() | 69.6 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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リンク
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集合体
登録構造単位 | ![]()
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単位格子 |
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要素
#1: タンパク質 | 分子量: 43580.691 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 属: Tectivirus / 発現宿主: ![]() #2: 水 | ChemComp-HOH / | Has protein modification | Y | |
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-実験情報
-実験
実験 | 手法: ![]() |
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試料調製
結晶 | マシュー密度: 3.46 Å3/Da / 溶媒含有率: 64.41 % | ||||||||||||||||||||||||||||
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結晶化 | 温度: 298 K / 手法: 蒸気拡散法, ハンギングドロップ法 / pH: 4.2 詳細: 30% MPD, 0.2 M NACL, 0.1 M SODIUM ACETATE, pH 4.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K | ||||||||||||||||||||||||||||
結晶化 | *PLUS PH range low: 4.3 / PH range high: 4.1 | ||||||||||||||||||||||||||||
溶液の組成 | *PLUS
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-データ収集
回折 | 平均測定温度: 100 K | ||||||||||||
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放射光源 | 由来: ![]() ![]() ![]() | ||||||||||||
検出器 | タイプ: BRANDEIS / 検出器: CCD / 日付: 1997年6月10日 / 詳細: mirrors | ||||||||||||
放射 | モノクロメーター: SI(III) / プロトコル: MAD / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray | ||||||||||||
放射波長 |
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反射 | 解像度: 2.15→100 Å / Num. all: 95154 / Num. obs: 87548 / % possible obs: 98.5 % / Observed criterion σ(F): 2 / Observed criterion σ(I): 2 / 冗長度: 4.9 % / Biso Wilson estimate: 15.7 Å2 / Rmerge(I) obs: 0.065 / Rsym value: 6.5 / Net I/σ(I): 22 | ||||||||||||
反射 シェル | 解像度: 2.15→2.25 Å / 冗長度: 4.9 % / Rmerge(I) obs: 0.537 / Mean I/σ(I) obs: 12 / Num. unique all: 11537 / Rsym value: 53.7 / % possible all: 95 | ||||||||||||
反射 | *PLUS 最低解像度: 100 Å |
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解析
ソフトウェア |
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精密化 | 構造決定の手法: ![]()
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溶媒の処理 | 溶媒モデル: FLAT MODEL / Bsol: 44.55 Å2 / ksol: 0.332 e/Å3 | ||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 28.5 Å2
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Refine analyze |
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精密化ステップ | サイクル: LAST / 解像度: 2.2→40.63 Å
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拘束条件 |
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LS精密化 シェル | 解像度: 2.2→2.28 Å / Rfactor Rfree error: 0.022 / Total num. of bins used: 10
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Xplor file |
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ソフトウェア | *PLUS 名称: CNS / バージョン: 0.9 / 分類: refinement | ||||||||||||||||||||||||||||||||||||||||
精密化 | *PLUS 最低解像度: 35 Å / σ(F): 0 / % reflection Rfree: 1.1 % / Rfactor obs: 0.201 / Rfactor Rfree: 0.228 / Rfactor Rwork: 0.2 | ||||||||||||||||||||||||||||||||||||||||
溶媒の処理 | *PLUS | ||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | *PLUS Biso mean: 28.5 Å2 | ||||||||||||||||||||||||||||||||||||||||
拘束条件 | *PLUS
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LS精密化 シェル | *PLUS Rfactor Rfree: 0.248 / % reflection Rfree: 1.7 % / Rfactor Rwork: 0.228 |