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(-) Description

Title :  A REFINED STRUCTURE OF HUMAN AQUAPORIN 1
 
Authors :  B. L. De Groot, A. Engel, H. Grubmuller
Date :  15 Jun 01  (Deposition) - 13 Dec 01  (Release) - 24 Feb 09  (Revision)
Method :  ELECTRON CRYSTALLOGRAPHY
Resolution :  3.54
Chains :  Asym./Biol. Unit :  A
Keywords :  Membrane Protein, Water Channel, Two-Dimensional Crystal, Electron Diffraction, Electron Microscopy (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  B. L. De Groot, A. Engel, H. Grubmuller
A Refined Structure Of Human Aquaporin 1
Febs Lett. V. 504 206 2001
PubMed-ID: 11532455  |  Reference-DOI: 10.1016/S0014-5793(01)02743-0
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - AQUAPORIN-1
    CellERYTHROCYTE
    ChainsA
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit A

Summary Information (see also Sequences/Alignments below)

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

(no "Ligand,Modified Residues,Ions" information available for 1H6I)

(-) Sites  (0, 0)

(no "Site" information available for 1H6I)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1H6I)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1H6I)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (3, 3)

Asymmetric/Biological Unit (3, 3)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_013279P38LAQP1_HUMANPolymorphism104894004AP38L
2UniProtVAR_004400A45VAQP1_HUMANPolymorphism28362692AA45V
3UniProtVAR_022318G165DAQP1_HUMANPolymorphism28362731AG165D

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1MIPPS00221 MIP family signature.AQP1_HUMAN74-82  1A:74-82

(-) Exons   (4, 4)

Asymmetric/Biological Unit (4, 4)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.18bENST0000031181318bENSE00001939785chr7:30951470-30951908439AQP1_HUMAN1-1281281A:9-128120
1.21aENST0000031181321aENSE00002194539chr7:30961681-30961845165AQP1_HUMAN129-183551A:129-18355
1.22ENST0000031181322ENSE00002158270chr7:30962179-3096225981AQP1_HUMAN184-210271A:184-21027
1.23fENST0000031181323fENSE00001372057chr7:30963065-309651312067AQP1_HUMAN211-269591A:211-23323

(-) Sequences/Alignments

Asymmetric/Biological 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:225
 aligned with AQP1_HUMAN | P29972 from UniProtKB/Swiss-Prot  Length:269

    Alignment length:225
                                    18        28        38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228     
           AQP1_HUMAN     9 LFWRAVVAEFLATTLFVFISIGSALGFKYPVGNNQTAVQDNVKVSLAFGLSIATLAQSVGHISGAHLNPAVTLGLLLSCQISIFRALMYIIAQCVGAIVATAILSGITSSLTGNSLGRNDLADGVNSGQGLGIEIIGTLQLVLCVLATTDRRRRDLGGSAPLAIGLSVALGHLLAIDYTGCGINPARSFGSAVITHNFSNHWIFWVGPFIGGALAVLIYDFILAP 233
               SCOP domains d1h6ia_ A: Aquaporin-1                                                                                                                                                                                                            SCOP domains
               CATH domains 1h6iA00 A:9-233 Glycerol uptake facilitator protein.                                                                                                                                                                              CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhhhhhhh...........hhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhh...................hhhhhhhhhhhhhhhhhhhhhhhh.........hhhhhhhhhhhhhhhhhh.......hhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) -----------------------------L------V-----------------------------------------------------------------------------------------------------------------------D-------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------MIP      ------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.18b  PDB: A:9-128 UniProt: 1-128 [INCOMPLETE]                                                                    Exon 1.21a  PDB: A:129-183 UniProt: 129-183            Exon 1.22  PDB: A:184-210  Exon 1.23f [INCOMPLETE] Transcript 1
                 1h6i A   9 LFWRAVVAEFLATTLFVFISIGSALGFKYPVGNNQTAVQDNVKVSLAFGLSIATLAQSVGHISGAHLNPAVTLGLLLSCQISIFRALMYIIAQCVGAIVATAILSGITSSLTGNSLGRNDLADGVNSGQGLGIEIIGTLQLVLCVLATTDRRRRDLGGSAPLAIGLSVALGHLLAIDYTGCGINPARSFGSAVITHNFSNHWIFWVGPFIGGALAVLIYDFILAP 233
                                    18        28        38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228     

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  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/Biological Unit

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1H6I)

(-) Gene Ontology  (76, 76)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (AQP1_HUMAN | P29972)
molecular function
    GO:0008519    ammonium transmembrane transporter activity    Enables the transfer of ammonium from one side of a membrane to the other. Ammonium is the cation NH4+ which is formed from N2 by root-nodule bacteria in leguminous plants and is an excretory product in ammonotelic animals.
    GO:0035379    carbon dioxide transmembrane transporter activity    Enables the transfer of carbon dioxide (CO2) from one side of a membrane to the other.
    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:0015168    glycerol transmembrane transporter activity    Enables the transfer of glycerol from one side of the membrane to the other. Glycerol is 1,2,3-propanetriol, a sweet, hygroscopic, viscous liquid, widely distributed in nature as a constituent of many lipids.
    GO:0005223    intracellular cGMP activated cation channel activity    Enables the transmembrane transfer of a cation by a channel that opens when intracellular cGMP has been bound by the channel complex or one of its constituent parts.
    GO:0030184    nitric oxide transmembrane transporter activity    Enables the directed movement of nitric oxide, nitrogen monoxide, from one side of a membrane to the other.
    GO:0005267    potassium channel activity    Enables the facilitated diffusion of a potassium ion (by an energy-independent process) involving passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism.
    GO:0015079    potassium ion transmembrane transporter activity    Enables the transfer of potassium ions (K+) from one side of a membrane to the other.
    GO:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0022857    transmembrane transporter activity    Enables the transfer of a substance from one side of a membrane to the other.
    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.
    GO:0005372    water transmembrane transporter activity    Enables the directed movement of water (H2O) from one side of a membrane to the other.
biological process
    GO:0072488    ammonium transmembrane transport    The directed movement of ammonium across a membrane by means of some agent such as a transporter or pore. Ammonium is the cation NH4+.
    GO:0015696    ammonium transport    The directed movement of ammonium into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Ammonium is the cation NH4+ which is formed from N2 by root-nodule bacteria in leguminous plants and is an excretory product in ammonotelic animals.
    GO:0015701    bicarbonate transport    The directed movement of bicarbonate into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0006182    cGMP biosynthetic process    The chemical reactions and pathways resulting in the formation of cyclic GMP, guanosine 3',5'-phosphate.
    GO:0035378    carbon dioxide transmembrane transport    A process in which carbon dioxide (CO2) is transported from one side of a membrane to the other by means of some agent such as a transporter or pore.
    GO:0015670    carbon dioxide transport    The directed movement of carbon dioxide (CO2) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0098655    cation transmembrane transport    A process in which a cation is transported from one side of a membrane to the other by means of some agent such as a transporter or pore.
    GO:0006884    cell volume homeostasis    Any process involved in maintaining the steady state of a cell's volume. The cell's volume refers to the three-dimensional space occupied by a cell.
    GO:0019725    cellular homeostasis    Any process involved in the maintenance of an internal steady state at the level of the cell.
    GO:0071474    cellular hyperosmotic response    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of detection of, or exposure to, a hyperosmotic environment, i.e. an environment with a higher concentration of solutes than the organism or cell.
    GO:0034644    cellular response to UV    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an ultraviolet radiation (UV light) stimulus. Ultraviolet radiation is electromagnetic radiation with a wavelength in the range of 10 to 380 nanometers.
    GO:0071320    cellular response to cAMP    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cAMP (cyclic AMP, adenosine 3',5'-cyclophosphate) stimulus.
    GO:0071280    cellular response to copper ion    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a copper ion stimulus.
    GO:0071549    cellular response to dexamethasone stimulus    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a dexamethasone stimulus.
    GO:0070301    cellular response to hydrogen peroxide    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a hydrogen peroxide (H2O2) stimulus.
    GO:0071456    cellular response to hypoxia    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level.
    GO:0071241    cellular response to inorganic substance    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an inorganic substance stimulus.
    GO:0071260    cellular response to mechanical stimulus    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a mechanical stimulus.
    GO:0071288    cellular response to mercury ion    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a mercury ion stimulus.
    GO:0071732    cellular response to nitric oxide    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a nitric oxide stimulus.
    GO:0071300    cellular response to retinoic acid    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a retinoic acid stimulus.
    GO:0071472    cellular response to salt stress    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating an increase or decrease in the concentration of salt (particularly but not exclusively sodium and chloride ions) in the environment.
    GO:0033554    cellular response to stress    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating the organism is under stress. The stress is usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation).
    GO:0009992    cellular water homeostasis    Any process involved in the maintenance of an internal steady state of water within a cell.
    GO:0033326    cerebrospinal fluid secretion    The regulated release of cerebrospinal fluid (CSF) from the choroid plexus of the lateral, third and fourth ventricles. The cerebrospinal fluid is a clear liquid that located within the ventricles, spinal canal, and subarachnoid spaces.
    GO:0030950    establishment or maintenance of actin cytoskeleton polarity    Any cellular process that results in the specification, formation or maintenance of polarized actin-based cytoskeletal structures.
    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:0021670    lateral ventricle development    The process whose specific outcome is the progression of the lateral ventricles over time, from the formation to the mature structure. The two lateral ventricles are a cavity in each of the cerebral hemispheres derived from the cavity of the embryonic neural tube. They are separated from each other by the septum pellucidum, and each communicates with the third ventricle by the foramen of Monro, through which also the choroid plexuses of the lateral ventricles become continuous with that of the third ventricle.
    GO:0085018    maintenance of symbiont-containing vacuole by host    The process in which a host organism maintains the structure and function of a symbiont-containing vacuole. The symbiont-containing vacuole is a membrane-bounded vacuole within a host cell in which a symbiont organism resides, and can serve to reduce pathogenicity of invading symbionts by restricting them to the vacuolar compartment.
    GO:0050891    multicellular organismal water homeostasis    Any process involved in the maintenance of an internal steady state of water within a tissue, organ, or a multicellular organism.
    GO:0043066    negative regulation of apoptotic process    Any process that stops, prevents, or reduces the frequency, rate or extent of cell death by apoptotic process.
    GO:0043154    negative regulation of cysteine-type endopeptidase activity involved in apoptotic process    Any process that stops, prevents, or reduces the frequency, rate or extent of a cysteine-type endopeptidase activity involved in the apoptotic process.
    GO:0030185    nitric oxide transport    The directed movement of nitric oxide, nitrogen monoxide, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0042476    odontogenesis    The process whose specific outcome is the progression of a tooth or teeth over time, from formation to the mature structure(s). A tooth is any hard bony, calcareous, or chitinous organ found in the mouth or pharynx of an animal and used in procuring or masticating food.
    GO:0030157    pancreatic juice secretion    The regulated release of pancreatic juice by the exocrine pancreas into the upper part of the intestine. Pancreatic juice is slightly alkaline and contains numerous enzymes and inactive enzyme precursors including alpha-amylase, chymotrypsinogen, lipase, procarboxypeptidase, proelastase, prophospholipase A2, ribonuclease, and trypsinogen. Its high concentration of bicarbonate ions helps to neutralize the acid from the stomach.
    GO:0045766    positive regulation of angiogenesis    Any process that activates or increases angiogenesis.
    GO:0048146    positive regulation of fibroblast proliferation    Any process that activates or increases the frequency, rate or extent of multiplication or reproduction of fibroblast cells.
    GO:0046878    positive regulation of saliva secretion    Any process that activates or increases the frequency, rate or extent of the regulated release of saliva.
    GO:0071805    potassium ion transmembrane transport    A process in which a potassium ion is transported from one side of a membrane to the other.
    GO:0006813    potassium ion transport    The directed movement of potassium ions (K+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0003091    renal water homeostasis    Renal process involved in the maintenance of an internal steady state of water in the body.
    GO:0003097    renal water transport    The directed movement of water (H2O) by the kidney.
    GO:0042493    response to drug    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 drug stimulus. A drug is a substance used in the diagnosis, treatment or prevention of a disease.
    GO:0035377    transepithelial water transport    The directed movement of water (H2O) from one side of an epithelium 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: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:0045177    apical part of cell    The region of a polarized cell that forms a tip or is distal to a base. For example, in a polarized epithelial cell, the apical region has an exposed surface and lies opposite to the basal lamina that separates the epithelium from other tissue.
    GO:0016324    apical plasma membrane    The region of the plasma membrane located at the apical end of the cell.
    GO:0009925    basal plasma membrane    The region of the plasma membrane located at the basal end of the cell. Often used in reference to animal polarized epithelial membranes, where the basal membrane is the part attached to the extracellular matrix, or in plant cells, where the basal membrane is defined with respect to the zygotic axis.
    GO:0016323    basolateral plasma membrane    The region of the plasma membrane that includes the basal end and sides of the cell. Often used in reference to animal polarized epithelial membranes, where the basal membrane is the part attached to the extracellular matrix, or in plant cells, where the basal membrane is defined with respect to the zygotic axis.
    GO:0005903    brush border    The dense covering of microvilli on the apical surface of a epithelial cells in tissues such as the intestine, kidney, and choroid plexus; the microvilli aid absorption by increasing the surface area of the cell.
    GO:0031526    brush border membrane    The portion of the plasma membrane surrounding the brush border.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0070062    extracellular exosome    A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
    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:0031965    nuclear membrane    Either of the lipid bilayers that surround the nucleus and form the nuclear envelope; excludes the intermembrane space.
    GO:0005634    nucleus    A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.
    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.
    GO:0042383    sarcolemma    The outer membrane of a muscle cell, consisting of the plasma membrane, a covering basement membrane (about 100 nm thick and sometimes common to more than one fiber), and the associated loose network of collagen fibers.
    GO:0020003    symbiont-containing vacuole    Membrane-bounded vacuole within a host cell in which a symbiont organism resides. The vacuole membrane is derived from both the host and symbiont.
    GO:0020005    symbiont-containing vacuole membrane    The lipid bilayer surrounding a symbiont-containing vacuole, derived from both the host and symbiont.

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 Related Entries

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

UniProtKB/Swiss-Prot
        AQP1_HUMAN | P299721fqy 1ih5 4csk

(-) Related Entries Specified in the PDB File

1fqy STRUCTURE OF AQUAPORIN-1 AT 3.8 A RESOLUTION BY ELECTRONCRYSTALLOGRAPHY
1hw0 CRYSTAL STRUCTURE OF AQUAPORIN-1
1ih5 CRYSTAL STRUCTURE OF AQUAPORIN-1