- PDB-1sor: Aquaporin-0 membrane junctions reveal the structure of a closed w... -
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基本情報
登録情報
データベース: PDB / ID: 1sor
タイトル
Aquaporin-0 membrane junctions reveal the structure of a closed water pore
要素
Aquaporin-0
キーワード
MEMBRANE PROTEIN / membrane junction / water channel
機能・相同性
機能・相同性情報
gap junction-mediated intercellular transport / water transport / structural constituent of eye lens / gap junction / water channel activity / lens development in camera-type eye / visual perception / positive regulation of cell adhesion / protein homotetramerization / calmodulin binding ...gap junction-mediated intercellular transport / water transport / structural constituent of eye lens / gap junction / water channel activity / lens development in camera-type eye / visual perception / positive regulation of cell adhesion / protein homotetramerization / calmodulin binding / apical plasma membrane / endoplasmic reticulum / plasma membrane 類似検索 - 分子機能
Glycerol uptake facilitator protein / Glycerol uptake facilitator protein. / Aquaporin transporter / Major intrinsic protein, conserved site / MIP family signature. / Major intrinsic protein / Major intrinsic protein / Aquaporin-like / Up-down Bundle / Mainly Alpha 類似検索 - ドメイン・相同性
ジャーナル: Nature / 年: 2004 タイトル: Aquaporin-0 membrane junctions reveal the structure of a closed water pore. 著者: Tamir Gonen / Piotr Sliz / Joerg Kistler / Yifan Cheng / Thomas Walz / 要旨: The lens-specific water pore aquaporin-0 (AQP0) is the only aquaporin known to form membrane junctions in vivo. We show here that AQP0 from the lens core, containing some carboxy-terminally cleaved ...The lens-specific water pore aquaporin-0 (AQP0) is the only aquaporin known to form membrane junctions in vivo. We show here that AQP0 from the lens core, containing some carboxy-terminally cleaved AQP0, forms double-layered crystals that recapitulate in vivo junctions. We present the structure of the AQP0 membrane junction as determined by electron crystallography. The junction is formed by three localized interactions between AQP0 molecules in adjoining membranes, mainly mediated by proline residues conserved in AQP0s from different species but not present in most other aquaporins. Whereas all previously determined aquaporin structures show the pore in an open conformation, the water pore is closed in AQP0 junctions. The water pathway in AQP0 also contains an additional pore constriction, not seen in other known aquaporin structures, which may be responsible for pore gating.
履歴
登録
2004年3月15日
登録サイト: RCSB / 処理サイト: RCSB
改定 1.0
2004年5月11日
Provider: repository / タイプ: Initial release
改定 1.1
2008年4月29日
Group: Version format compliance
改定 1.2
2011年7月13日
Group: Derived calculations / Version format compliance
改定 1.3
2017年10月11日
Group: Data collection / Data processing / Refinement description カテゴリ: em_3d_reconstruction / em_image_scans / software
EXPERIMENT TYPE : SINGLE-CRYSTAL ELECTRON DIFFRACTION DATE OF DATA COLLECTION : 28-JAN-2003 ...EXPERIMENT TYPE : SINGLE-CRYSTAL ELECTRON DIFFRACTION DATE OF DATA COLLECTION : 28-JAN-2003 TEMPERATURE (KELVIN) : 100.0 PH : 6.00 NUMBER OF CRYSTALS USED : 131 RADIATION SOURCE : ELECTRON MICROSCOPE X-RAY GENERATOR MODEL : TECNAI T20 OPTICS : CRYSTALS TILTED TO 0, 20, 45, 60 AND 70 DEGREES DETECTOR TYPE : CCD DETECTOR MANUFACTURER : GATAN 2K X 2K INTENSITY-INTEGRATION SOFTWARE : DIGITAL MICROGRAPH 3.7.4 DATA SCALING SOFTWARE : MRC NUMBER OF UNIQUE REFLECTIONS : 6635 RESOLUTION RANGE HIGH (A) : 3.000 RESOLUTION RANGE LOW (A) : 30.000 VERALL. COMPLETENESS FOR RANGE (%) : 88.0 DATA REDUNDANCY : 6.700 IN THE HIGHEST RESOLUTION SHELL. HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 3.00 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 3.50 COMPLETENESS FOR SHELL (%) : 82.0 DATA REDUNDANCY IN SHELL : 4.50 R MERGE FOR SHELL (I) : 0.54000 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT SOFTWARE USED: MOLREP 7.4.03 STARTING MODEL: PDB ENTRY 1J4N
Remark 999
SEQUENCE The sequence of this protein has been deposited to gene bank. The accession number is AY573927.