- PDB-2d57: Double layered 2D crystal structure of AQUAPORIN-4 (AQP4M23) at 3... -
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基本情報
登録情報
データベース: PDB / ID: 2d57
タイトル
Double layered 2D crystal structure of AQUAPORIN-4 (AQP4M23) at 3.2 a resolution by electron crystallography
要素
Aquaporin-4
キーワード
TRANSPORT PROTEIN (運搬体タンパク質) / WATER TRANSPORT / WATER CHANNEL (アクアポリン) / AQUAPORIN (アクアポリン) / TWO-DIMENSIONAL CRYSTAL / MEMBRANE PROTEIN (膜タンパク質) / BACULOVIRUS EXPRESSION SYSTEM
機能・相同性
機能・相同性情報
Passive transport by Aquaporins / cerebrospinal fluid secretion / renal water absorption / regulation of vascular endothelial growth factor production / cerebrospinal fluid circulation / astrocyte end-foot / water channel activity / intracellular water homeostasis / water transport / negative regulation of cell adhesion molecule production ...Passive transport by Aquaporins / cerebrospinal fluid secretion / renal water absorption / regulation of vascular endothelial growth factor production / cerebrospinal fluid circulation / astrocyte end-foot / water channel activity / intracellular water homeostasis / water transport / negative regulation of cell adhesion molecule production / cell projection membrane / multicellular organismal-level water homeostasis / Vasopressin regulates renal water homeostasis via Aquaporins / cellular response to interleukin-6 / negative regulation of interleukin-1 beta production / negative regulation of interleukin-6 production / cellular response to interleukin-1 / response to glucocorticoid / 横行小管 / basal plasma membrane / cellular response to estradiol stimulus / female pregnancy / establishment of localization in cell / cellular response to glucose stimulus / sensory perception of sound / 筋鞘 / carbon dioxide transport / 細胞接着 / cellular response to type II interferon / cell-cell junction / protein homotetramerization / basolateral plasma membrane / endosome membrane / external side of plasma membrane / protein-containing complex / extracellular region / identical protein binding / 細胞膜 / 細胞質 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: J Mol Biol / 年: 2006 タイトル: Implications of the aquaporin-4 structure on array formation and cell adhesion. 著者: Yoko Hiroaki / Kazutoshi Tani / Akiko Kamegawa / Nobuhiko Gyobu / Kouki Nishikawa / Hiroshi Suzuki / Thomas Walz / Sei Sasaki / Kaoru Mitsuoka / Kazushi Kimura / Akira Mizoguchi / Yoshinori Fujiyoshi / 要旨: Aquaporin-4 (AQP4) is the predominant water channel in the mammalian brain and an important drug target for treatment of cerebral edema, bipolar disorder and mesial temporal lobe epilepsy. We ...Aquaporin-4 (AQP4) is the predominant water channel in the mammalian brain and an important drug target for treatment of cerebral edema, bipolar disorder and mesial temporal lobe epilepsy. We determined the AQP4 structure by electron crystallography of double-layered, two-dimensional (2D) crystals. The structure allows us to discuss how the expression ratio between the long and short AQP4 splicing variant can determine the size of in vivo orthogonal arrays. Furthermore, AQP4 contains a short 3(10) helix in an extracellular loop, which mediates weak but specific interactions between AQP4 molecules in adjoining membranes. This finding suggests a previously unexpected role for AQP4 in cell adhesion. This notion was corroborated by expression of AQP4 in L-cells, which resulted in clustering of the cells. Our AQP4 structure thus enables us to propose models for the size regulation of orthogonal arrays and channel-mediated cell adhesion.
履歴
登録
2005年10月29日
登録サイト: PDBJ / 処理サイト: PDBJ
改定 1.0
2006年1月31日
Provider: repository / タイプ: Initial release
改定 1.1
2008年4月30日
Group: Version format compliance
改定 1.2
2011年7月13日
Group: Derived calculations / Version format compliance
EXPERIMENT TYPE : ELECTRON DIFFRACTION DATE OF DATA COLLECTION : 01-APR-2002 TEMPERATURE (KELVIN) : ... EXPERIMENT TYPE : ELECTRON DIFFRACTION DATE OF DATA COLLECTION : 01-APR-2002 TEMPERATURE (KELVIN) : 4.2 PH : 6.00 NUMBER OF CRYSTALS USED : 135 RADIATION SOURCE : JEM3000SFF OPTICS : CRYSTALS TILTED TO MAX 60 DEGREES DETECTOR TYPE : CCD DETECTOR MANUFACTURER : GATAN ULTRASCAN INTENSITY INTEGRATION SOFTWARE : PICKYCOR, AN MRC ELECTRON DIFFRACTION PROGRAM DATA SCALING SOFTWARE : MERGEDIFF,AN MRC ELECTRON DIFFRACTION PROGRAM ACCELERATION VOLTAGE (KV) : 300 NUMBER OF UNIQUE REFLECTIONS : 5992 RESOLUTION RANGE HIGH (A) : 3.20 RESOLUTION RANGE LOW (A) : 22.21 OVERALL. COMPLETENESS FOR RANGE (%) : 87.0 DATA REDUNDANCY : NULL R MERGE (I) : 0.223 R SYM (I) : NULL FOR THE DATA SET : NULL IN THE HIGHEST RESOLUTION SHELL. HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 3.20 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 3.40 COMPLETENESS FOR SHELL (%) : 85.8 DATA REDUNDANCY IN SHELL : NULL R MERGE FOR SHELL (I) : 0.445 R SYM FOR SHELL (I) : NULL FOR SHELL : NULL METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT SOFTWARE USED: CNS STARTING MODEL: PDB ENTRY 1J4N