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Title :  X-RAY STRUCTURE OF LENS AQUAPORIN-0 (AQP0) (LENS MIP) IN AN OPEN PORE STATE
 
Authors :  T. Gonen, Y. Cheng, P. Sliz, Y. Hiroaki, Y. Fujiyoshi, S. C. Harrison, T.
Date :  03 Oct 05  (Deposition) - 06 Dec 05  (Release) - 26 Oct 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.40
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (4x)
Keywords :  Aquaporin-0; Aqp0; Lens Mip; Open Water Pore; Aquaporin; Membrane Protein; , Membrane Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  T. Gonen, Y. Cheng, P. Sliz, Y. Hiroaki, Y. Fujiyoshi, S. C. Harrison, T. Walz
Lipid-Protein Interactions In Double-Layered Two-Dimensiona Aqp0 Crystals.
Nature V. 438 633 2005
PubMed-ID: 16319884  |  Reference-DOI: 10.1038/NATURE04321

(-) Compounds

Molecule 1 - LENS FIBER MAJOR INTRINSIC PROTEIN
    ChainsA
    Organism CommonCATTLE
    Organism ScientificBOS TAURUS
    Organism Taxid9913
    SynonymAQUAPORIN-0, MIP26, MP26

 Structural Features

(-) Chains, Units

  1
Asymmetric Unit A
Biological Unit 1 (4x)A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 2B6P)

(-) Sites  (0, 0)

(no "Site" information available for 2B6P)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2B6P)

(-) Cis Peptide Bonds  (1, 1)

Asymmetric Unit
No.Residues
1Arg A:241 -Pro A:242

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2B6P)

(-) PROSITE Motifs  (1, 1)

Asymmetric Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1MIPPS00221 MIP family signature.MIP_SHEEP66-74  1A:66-74
MIP_BOVIN66-74  1A:66-74
Biological Unit 1 (1, 8)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1MIPPS00221 MIP family signature.MIP_SHEEP66-74  4A:66-74
MIP_BOVIN66-74  4A:66-74

(-) Exons   (0, 0)

(no "Exon" information available for 2B6P)

(-) Sequences/Alignments

Asymmetric Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it)
Chain A from PDB  Type:PROTEIN  Length:261
 aligned with MIP_BOVIN | P06624 from UniProtKB/Swiss-Prot  Length:263

    Alignment length:262
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261  
            MIP_BOVIN     2 WELRSASFWRAICAEFFASLFYVFFGLGASLRWAPGPLHVLQVALAFGLALATLVQAVGHISGAHVNPAVTFAFLVGSQMSLLRAICYMVAQLLGAVAGAAVLYSVTPPAVRGNLALNTLHPGVSVGQATIVEIFLTLQFVLCIFATYDERRNGRLGSVALAVGFSLTLGHLFGMYYTGAGMNPARSFAPAILTRNFTNHWVYWVGPVIGAGLGSLLYDFLLFPRLKSVSERLSILKGSRPSESNGQPEVTGEPVELKTQAL 263
               SCOP domains d2b6pa_ A: automated matches                                                                                                                                                                                                                                           SCOP domains
               CATH domains 2b6pA00 A:2-263 Glycerol uptake fa cilitator protein.                                                                                                                                                                                                                  CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .......hhhhhhhhhhhhhhhhhhhhhhhh...-hhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhh.................hhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhh.......hhhhhhhhh.......................... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ----------------------------------------------------------------MIP      --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2b6p A   2 WELRSASFWRAICAEFFASLFYVFFGLGASLRWA-GPLHVLQVALAFGLALATLVQAVGHISGAHVNPAVTFAFLVGSQMSLLRAICYMVAQLLGAVAGAAVLYSVTPPAVRGNLALNTLHPGVSVGQATIVEIFLTLQFVLCIFATYDERRNGRLGSVALAVGFSLTLGHLFGMYYTGAGMNPARSFAPAILTRNFTNHWVYWVGPVIGAGLGSLLYDFLLFPRLKSVSERLSILKGSRPSESNGQPEVTGEPVELKTQAL 263
                                    11        21        31   | |  41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261  
                                                            35 |                                                                                                                                                                                                                                  
                                                              37                                                                                                                                                                                                                                  

Chain A from PDB  Type:PROTEIN  Length:261
 aligned with MIP_SHEEP | Q6J8I9 from UniProtKB/Swiss-Prot  Length:263

    Alignment length:262
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261  
            MIP_SHEEP     2 WELRSASFWRAIFAEFFATLFYVFFGLGASLRWAPGPLHVLQVALAFGLALATLVQAVGHISGAHVNPAVTFAFLVGSQMSLLRAICYVVAQLLGAVAGAAVLYSVTPPAVRGNLALNTLHPGVSVGQATIVEIFLTLQFVLCIFATYDERRNGRLGSVALAVGFSLTLGHLFGMYYTGAGMNPARSFAPAILTRNFTNHWVYWVGPVIGAGLGSLLYDFLLFPRLKSVSERLSILKGTRPSESNGQPEVTGEPVELKTQAL 263
               SCOP domains d2b6pa_ A: automated matches                                                                                                                                                                                                                                           SCOP domains
               CATH domains 2b6pA00 A:2-263 Glycerol uptake fa cilitator protein.                                                                                                                                                                                                                  CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .......hhhhhhhhhhhhhhhhhhhhhhhh...-hhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhh.................hhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhh.......hhhhhhhhh.......................... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------MIP      --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2b6p A   2 WELRSASFWRAICAEFFASLFYVFFGLGASLRWA-GPLHVLQVALAFGLALATLVQAVGHISGAHVNPAVTFAFLVGSQMSLLRAICYMVAQLLGAVAGAAVLYSVTPPAVRGNLALNTLHPGVSVGQATIVEIFLTLQFVLCIFATYDERRNGRLGSVALAVGFSLTLGHLFGMYYTGAGMNPARSFAPAILTRNFTNHWVYWVGPVIGAGLGSLLYDFLLFPRLKSVSERLSILKGSRPSESNGQPEVTGEPVELKTQAL 263
                                    11        21        31   | |  41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261  
                                                            35 |                                                                                                                                                                                                                                  
                                                              37                                                                                                                                                                                                                                  

   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (1, 1)

Asymmetric Unit

(-) CATH Domains  (1, 1)

Asymmetric Unit

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2B6P)

(-) Gene Ontology  (26, 45)

Asymmetric Unit(hide GO term definitions)
Chain A   (MIP_BOVIN | P06624)
molecular function
    GO:0005516    calmodulin binding    Interacting selectively and non-covalently with calmodulin, a calcium-binding protein with many roles, both in the calcium-bound and calcium-free states.
    GO:0005243    gap junction channel activity    A wide pore channel activity that enables a direct cytoplasmic connection from one cell to an adjacent cell. The gap junction can pass large solutes as well as electrical signals between cells. Gap junctions consist of two gap junction hemi-channels, or connexons, one contributed by each membrane through which the gap junction passes.
    GO:0015254    glycerol channel activity    Enables the facilitated diffusion of glycerol (by an energy-independent process) involving passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism.
    GO:0005212    structural constituent of eye lens    The action of a molecule that contributes to the structural integrity of the lens of an eye.
    GO:0005215    transporter activity    Enables the directed movement of substances (such as macromolecules, small molecules, ions) into, out of or within a cell, or between cells.
    GO:0015250    water channel activity    Transport systems of this type enable facilitated diffusion of water (by an energy-independent process) by passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism.
biological process
    GO:0009992    cellular water homeostasis    Any process involved in the maintenance of an internal steady state of water within a cell.
    GO:1990349    gap junction-mediated intercellular transport    The movement of substances between cells via gap junctions. A gap junction is a fine cytoplasmic channel, found in animal cells, that connects the cytoplasm of one cell to that of an adjacent cell, allowing ions and other molecules to pass freely between the two cells.
    GO:0015793    glycerol transport    The directed movement of glycerol into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Glycerol is 1,2,3-propanetriol, a sweet, hygroscopic, viscous liquid, widely distributed in nature as a constituent of many lipids.
    GO:0034220    ion transmembrane transport    A process in which an ion is transported from one side of a membrane to the other by means of some agent such as a transporter or pore.
    GO:0002088    lens development in camera-type eye    The process whose specific outcome is the progression of the lens over time, from its formation to the mature structure. The lens is a transparent structure in the eye through which light is focused onto the retina. An example of this process is found in Mus musculus.
    GO:0045785    positive regulation of cell adhesion    Any process that activates or increases the frequency, rate or extent of cell adhesion.
    GO:0051289    protein homotetramerization    The formation of a protein homotetramer, a macromolecular structure consisting of four noncovalently associated identical subunits.
    GO:0006810    transport    The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
    GO:0007601    visual perception    The series of events required for an organism to receive a visual stimulus, convert it to a molecular signal, and recognize and characterize the signal. Visual stimuli are detected in the form of photons and are processed to form an image.
    GO:0006833    water transport    The directed movement of water (H2O) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
cellular component
    GO:0016324    apical plasma membrane    The region of the plasma membrane located at the apical end of the cell.
    GO:0030054    cell junction    A cellular component that forms a specialized region of connection between two or more cells or between a cell and the extracellular matrix. At a cell junction, anchoring proteins extend through the plasma membrane to link cytoskeletal proteins in one cell to cytoskeletal proteins in neighboring cells or to proteins in the extracellular matrix.
    GO:0005783    endoplasmic reticulum    The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
    GO:0005921    gap junction    A cell-cell junction composed of pannexins or innexins and connexins, two different families of channel-forming proteins.
    GO:0016021    integral component of membrane    The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0005887    integral component of plasma membrane    The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Chain A   (MIP_SHEEP | Q6J8I9)
molecular function
    GO:0005516    calmodulin binding    Interacting selectively and non-covalently with calmodulin, a calcium-binding protein with many roles, both in the calcium-bound and calcium-free states.
    GO:0005243    gap junction channel activity    A wide pore channel activity that enables a direct cytoplasmic connection from one cell to an adjacent cell. The gap junction can pass large solutes as well as electrical signals between cells. Gap junctions consist of two gap junction hemi-channels, or connexons, one contributed by each membrane through which the gap junction passes.
    GO:0005212    structural constituent of eye lens    The action of a molecule that contributes to the structural integrity of the lens of an eye.
    GO:0005215    transporter activity    Enables the directed movement of substances (such as macromolecules, small molecules, ions) into, out of or within a cell, or between cells.
    GO:0015250    water channel activity    Transport systems of this type enable facilitated diffusion of water (by an energy-independent process) by passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism.
biological process
    GO:1990349    gap junction-mediated intercellular transport    The movement of substances between cells via gap junctions. A gap junction is a fine cytoplasmic channel, found in animal cells, that connects the cytoplasm of one cell to that of an adjacent cell, allowing ions and other molecules to pass freely between the two cells.
    GO:0002088    lens development in camera-type eye    The process whose specific outcome is the progression of the lens over time, from its formation to the mature structure. The lens is a transparent structure in the eye through which light is focused onto the retina. An example of this process is found in Mus musculus.
    GO:0045785    positive regulation of cell adhesion    Any process that activates or increases the frequency, rate or extent of cell adhesion.
    GO:0051289    protein homotetramerization    The formation of a protein homotetramer, a macromolecular structure consisting of four noncovalently associated identical subunits.
    GO:0050896    response to stimulus    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus. The process begins with detection of the stimulus and ends with a change in state or activity or the cell or organism.
    GO:0055085    transmembrane transport    The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other
    GO:0006810    transport    The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
    GO:0007601    visual perception    The series of events required for an organism to receive a visual stimulus, convert it to a molecular signal, and recognize and characterize the signal. Visual stimuli are detected in the form of photons and are processed to form an image.
    GO:0006833    water transport    The directed movement of water (H2O) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
cellular component
    GO:0030054    cell junction    A cellular component that forms a specialized region of connection between two or more cells or between a cell and the extracellular matrix. At a cell junction, anchoring proteins extend through the plasma membrane to link cytoskeletal proteins in one cell to cytoskeletal proteins in neighboring cells or to proteins in the extracellular matrix.
    GO:0005783    endoplasmic reticulum    The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
    GO:0005921    gap junction    A cell-cell junction composed of pannexins or innexins and connexins, two different families of channel-forming proteins.
    GO:0016021    integral component of membrane    The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0005887    integral component of plasma membrane    The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        MIP_BOVIN | P066241ymg 2c32
        MIP_SHEEP | Q6J8I91sor 2b6o 3j41 3m9i

(-) Related Entries Specified in the PDB File

1sor 3A RESOLUTION STRUCTURE OF LENS AQUAPORIN 0 (AQP0; MIP) IN A CLOSED PORE STATE DETERMINED BY ELECTRON CRYSTALLOGRAPHY.
1ymg 2.2A RESOLUTION STRUCTURE OF LENS AQUAPORIN0 (AQP0; MIP) IN AN OPEN PORE STATE DETERMINED BY XRAY CRYSTALLOGRAPHY. THIS ENTRY 2B6P REFLECTS AN ALTERNATIVE MODELING OF X-RAY DATA R1YMGSF
2b6o 1.9A RESOLUTION STRUCTURE OF LENS AQUAPORIN 0 (AQP0; MIP) IN A CLOSED PORE STATE DETERMINED BY ELECTRON CRYSTALLOGRAPHY.