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(-) Description

Title :  STRUCTURE OF BCL-XL/BAK PEPTIDE COMPLEX, NMR, MINIMIZED AVERAGE STRUCTURE
 
Authors :  M. Sattler, H. Liang, D. Nettesheim, R. P. Meadows, J. E. Harlan, M. Eberstadt, H. Yoon, S. B. Shuker, B. S. Chang, A. J. Minn, C. B. Thompson, S. W. Fesik
Date :  16 Oct 96  (Deposition) - 29 Oct 97  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A,B
Keywords :  Apoptosis, Alternative Splicing, Complex (Apoptosis/Peptide) (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  M. Sattler, H. Liang, D. Nettesheim, R. P. Meadows, J. E. Harlan, M. Eberstadt, H. S. Yoon, S. B. Shuker, B. S. Chang, A. J. Minn, C. B. Thompson, S. W. Fesik
Structure Of Bcl-Xl-Bak Peptide Complex: Recognition Between Regulators Of Apoptosis.
Science V. 275 983 1997
PubMed-ID: 9020082  |  Reference-DOI: 10.1126/SCIENCE.275.5302.983
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - BCL-XL
    ChainsA
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System GeneHUMAN BCL-XL, RESIDUES 1-44, 85- 205, DELETION MUTANT LACKING A FLEXIBLE LOOP (RESIDUES 45- 84) AND THE C-TERMINAL HYDROPHOBIC REGION, WITH A C- TERMINAL HIS-TAG
    Expression System PlasmidPET29B
    Expression System Taxid562
    Organism ScientificESCHERICHIA COLI
    Organism Taxid562
    StrainHMS174 (DE3)
 
Molecule 2 - BAK PEPTIDE
    ChainsB
    EngineeredYES
    FragmentRESIDUES 572 - 587 OF BAK PROTEIN

 Structural Features

(-) Chains, Units

  
NMR Structure 

Summary Information (see also Sequences/Alignments below)

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

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

(-) Sites  (0, 0)

(no "Site" information available for 1BXL)

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1BXL)

(-) PROSITE Motifs  (6, 8)

NMR Structure (6, 8)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1BH4_1PS01260 Apoptosis regulator, Bcl-2 family BH4 motif signature.B2CL1_HUMAN4-24  1A:4-24
2BH4_2PS50063 Apoptosis regulator, Bcl-2 family BH4 motif profile.B2CL1_HUMAN5-24  1A:5-24
3BH3PS01259 Apoptosis regulator, Bcl-2 family BH3 motif signature.BAK_HUMAN74-88  1B:574-587
B2CL1_HUMAN86-100  1A:86-100
4BCL2_FAMILYPS50062 BCL2-like apoptosis inhibitors family profile.BAK_HUMAN78-179  1B:578-587
B2CL1_HUMAN90-190  1A:90-190
5BH1PS01080 Apoptosis regulator, Bcl-2 family BH1 motif signature.B2CL1_HUMAN130-148  1A:130-148
6BH2PS01258 Apoptosis regulator, Bcl-2 family BH2 motif signature.B2CL1_HUMAN181-192  1A:181-192

(-) Exons   (3, 3)

NMR Structure (3, 3)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1bENST000003744671bENSE00001945899chr6:33548019-33547802218BAK_HUMAN-00--
1.2ENST000003744672ENSE00000849371chr6:33545412-33545312101BAK_HUMAN1-24240--
1.3cENST000003744673cENSE00000519515chr6:33543705-33543570136BAK_HUMAN24-69460--
1.4aENST000003744674aENSE00000741329chr6:33543218-33543075144BAK_HUMAN69-117491B:572-58716
1.5bENST000003744675bENSE00001685926chr6:33541991-33541811181BAK_HUMAN117-177610--
1.6bENST000003744676bENSE00001915603chr6:33541684-335403291356BAK_HUMAN178-211340--

2.3aENST000003760623aENSE00001469279chr20:30310400-30309458943B2CL1_HUMAN1-1881881A:1-188 (gaps)188
2.4cENST000003760624cENSE00001469296chr20:30253889-302522551635B2CL1_HUMAN189-233451A:189-21729

(-) Sequences/Alignments

NMR Structure
   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:181
 aligned with B2CL1_HUMAN | Q07817 from UniProtKB/Swiss-Prot  Length:233

    Alignment length:221
                                1                                                                                                                                                                                                                        
                                |    6        16        26        36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216 
          B2CL1_HUMAN     - ----MSQSNRELVVDFLSYKLSQKGYSWSQFSDVEENRTEAPEGTESEMETPSAINGNPSWHLADSPAVNGATGHSSSLDAREVIPMAAVKQALREAGDEFELRYRRAFSDLTSQLHITPGTAYQSFEQVVNELFRDGVNWGRIVAFFSFGGALCVESVDKEMQVLVSRIAAWMATYLNDHLEPWIQENGGWDTFVELYGNNAAAESRKGQERFNRWFLTG 217
               SCOP domains d1bxla_ A: Apoptosis regulator Bcl-xL                                                                                                                                                                                         SCOP domains
               CATH domains 1bxlA00 A:-3-217 Apoptosis Regulator Bcl-x                                                                                                                                                                                    CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ......hhhhhhhhhhhhhhhhhh....hhh..............hhh----------------------------------------hhhhhhhhhhhhhhhhhhhh..............hhhhhhhhhhhh........hhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhh..hhhhhhh.hhhhhhhh....hhhhhh............. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) -------BH4_1  PDB: A:4-24   -----------------------------------------------------------------BCL2_FAMILY  PDB: A:90-190 UniProt: 90-190                                                           --------------------------- PROSITE (1)
                PROSITE (2) --------BH4_2  PDB: A:5-24  ---------------------------------------------------------------------------------------------------------BH1  PDB: A:130-148--------------------------------BH2         ------------------------- PROSITE (2)
                PROSITE (3) -----------------------------------------------------------------------------------------BH3            --------------------------------------------------------------------------------------------------------------------- PROSITE (3)
               Transcript 2 ----Exon 2.3a  PDB: A:1-188 (gaps) UniProt: 1-188                                                                                                                                               Exon 2.4c  PDB: A:189-217     Transcript 2
                 1bxl A  -3 MSMAMSQSNRELVVDFLSYKLSQKGYSWSQFSDVEENRTEAPEGTESE----------------------------------------AVKQALREAGDEFELRYRRAFSDLTSQLHITPGTAYQSFEQVVNELFRDGVNWGRIVAFFSFGGALCVESVDKEMQVLVSRIAAWMATYLNDHLEPWIQENGGWDTFVELYGNNAAAESRKGQERLEHHHHHH 217
                                     6        16        26        36       | -         -         -         -        86        96       106       116       126       136       146       156       166       176       186       196       206       216 
                                                                          44                                       85                                                                                                                                    

Chain B from PDB  Type:PROTEIN  Length:16
 aligned with BAK_HUMAN | Q16611 from UniProtKB/Swiss-Prot  Length:211

    Alignment length:16
                                    81      
            BAK_HUMAN    72 GQVGRQLAIIGDDINR  87
               SCOP domains ---------------- SCOP domains
               CATH domains ---------------- CATH domains
               Pfam domains ---------------- Pfam domains
         Sec.struct. author ....hhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ---------------- SAPs(SNPs)
                PROSITE (1) --BH3            PROSITE (1)
                PROSITE (2) ------BCL2_FAMIL PROSITE (2)
               Transcript 1 Exon 1.4a        Transcript 1
                 1bxl B 572 GQVGRQLAIIGDDINR 587
                                   581      

   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)

NMR Structure

(-) CATH Domains  (1, 1)

NMR Structure

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (129, 149)

NMR Structure(hide GO term definitions)
Chain A   (B2CL1_HUMAN | Q07817)
molecular function
    GO:0051434    BH3 domain binding    Interacting selectively and non-covalently with the BH3 domain of a protein of the Bcl-2 family. The BH3 domain is a potent death domain and has an important role in protein-protein interactions and in cell death.
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    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:0046982    protein heterodimerization activity    Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
    GO:0042803    protein homodimerization activity    Interacting selectively and non-covalently with an identical protein to form a homodimer.
    GO:0019901    protein kinase binding    Interacting selectively and non-covalently with a protein kinase, any enzyme that catalyzes the transfer of a phosphate group, usually from ATP, to a protein substrate.
biological process
    GO:0008637    apoptotic mitochondrial changes    The morphological and physiological alterations undergone by mitochondria during apoptosis.
    GO:0006915    apoptotic process    A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.
    GO:0071839    apoptotic process in bone marrow    The apoptotic process in cells in the bone marrow.
    GO:0008283    cell proliferation    The multiplication or reproduction of cells, resulting in the expansion of a cell population.
    GO:0060154    cellular process regulating host cell cycle in response to virus    Any cellular process that modulates the rate or extent of progression through the cell cycle in response to a virus.
    GO:0071312    cellular response to alkaloid    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 alkaloid stimulus. Alkaloids are a large group of nitrogenous substances found in naturally in plants, many of which have extracts that are pharmacologically active.
    GO:0071230    cellular response to amino acid 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 an amino acid stimulus. An amino acid is a carboxylic acids containing one or more amino groups.
    GO:0071480    cellular response to gamma radiation    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 gamma radiation stimulus. Gamma radiation is a form of electromagnetic radiation (EMR) or light emission of a specific frequency produced from sub-atomic particle interaction, such as electron-positron annihilation and radioactive decay. Gamma rays are generally characterized as EMR having the highest frequency and energy, and also the shortest wavelength, within the electromagnetic radiation spectrum.
    GO:0000910    cytokinesis    The division of the cytoplasm and the plasma membrane of a cell and its partitioning into two daughter cells.
    GO:0006897    endocytosis    A vesicle-mediated transport process in which cells take up external materials or membrane constituents by the invagination of a small region of the plasma membrane to form a new membrane-bounded vesicle.
    GO:0097192    extrinsic apoptotic signaling pathway in absence of ligand    A series of molecular signals in which a signal is conveyed from the cell surface to trigger the apoptotic death of a cell. The pathway starts with withdrawal of a ligand from a cell surface receptor, and ends when the execution phase of apoptosis is triggered.
    GO:0009566    fertilization    The union of gametes of opposite sexes during the process of sexual reproduction to form a zygote. It involves the fusion of the gametic nuclei (karyogamy) and cytoplasm (plasmogamy).
    GO:0007281    germ cell development    The process whose specific outcome is the progression of an immature germ cell over time, from its formation to the mature structure (gamete). A germ cell is any reproductive cell in a multicellular organism.
    GO:0040007    growth    The increase in size or mass of an entire organism, a part of an organism or a cell.
    GO:0097284    hepatocyte apoptotic process    Any apoptotic process in a hepatocyte, the main structural component of the liver.
    GO:0001701    in utero embryonic development    The process whose specific outcome is the progression of the embryo in the uterus over time, from formation of the zygote in the oviduct, to birth. An example of this process is found in Mus musculus.
    GO:0008630    intrinsic apoptotic signaling pathway in response to DNA damage    A series of molecular signals in which an intracellular signal is conveyed to trigger the apoptotic death of a cell. The pathway is induced by the detection of DNA damage, and ends when the execution phase of apoptosis is triggered.
    GO:0008584    male gonad development    The process whose specific outcome is the progression of the male gonad over time, from its formation to the mature structure.
    GO:0070584    mitochondrion morphogenesis    The process in which the anatomical structures of a mitochondrion are generated and organized.
    GO:0007093    mitotic cell cycle checkpoint    A cell cycle checkpoint that ensures accurate chromosome replication and segregation by preventing progression through a mitotic cell cycle until conditions are suitable for the cell to proceed to the next stage.
    GO:2000811    negative regulation of anoikis    Any process that stops, prevents or reduces the frequency, rate or extent of anoikis.
    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:0010507    negative regulation of autophagy    Any process that stops, prevents, or reduces the frequency, rate or extent of autophagy. Autophagy is the process in which cells digest parts of their own cytoplasm.
    GO:0090005    negative regulation of establishment of protein localization to plasma membrane    Any process that decreases the frequency, rate or extent of the directed movement of a protein to a specific location in the plasma membrane.
    GO:1900118    negative regulation of execution phase of apoptosis    Any process that stops, prevents or reduces the frequency, rate or extent of execution phase of apoptosis.
    GO:2001240    negative regulation of extrinsic apoptotic signaling pathway in absence of ligand    Any process that stops, prevents or reduces the frequency, rate or extent of extrinsic apoptotic signaling pathway in absence of ligand.
    GO:2001243    negative regulation of intrinsic apoptotic signaling pathway    Any process that stops, prevents or reduces the frequency, rate or extent of intrinsic apoptotic signaling pathway.
    GO:1902230    negative regulation of intrinsic apoptotic signaling pathway in response to DNA damage    Any process that stops, prevents or reduces the frequency, rate or extent of intrinsic apoptotic signaling pathway in response to DNA damage.
    GO:0043524    negative regulation of neuron apoptotic process    Any process that stops, prevents, or reduces the frequency, rate or extent of cell death by apoptotic process in neurons.
    GO:0090201    negative regulation of release of cytochrome c from mitochondria    Any process that decreases the rate, frequency or extent of release of cytochrome c from mitochondria, the process in which cytochrome c is enabled to move from the mitochondrial intermembrane space into the cytosol, which is an early step in apoptosis and leads to caspase activation.
    GO:0051402    neuron apoptotic process    Any apoptotic process in a neuron, the basic cellular unit of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the nervous system.
    GO:0001541    ovarian follicle development    The process whose specific outcome is the progression of the ovarian follicle over time, from its formation to the mature structure.
    GO:0043065    positive regulation of apoptotic process    Any process that activates or increases the frequency, rate or extent of cell death by apoptotic process.
    GO:0008284    positive regulation of cell proliferation    Any process that activates or increases the rate or extent of cell proliferation.
    GO:2001244    positive regulation of intrinsic apoptotic signaling pathway    Any process that activates or increases the frequency, rate or extent of intrinsic apoptotic signaling pathway.
    GO:0042981    regulation of apoptotic process    Any process that modulates the occurrence or rate of cell death by apoptotic process.
    GO:0046902    regulation of mitochondrial membrane permeability    Any process that modulates the frequency, rate or extent of the passage or uptake of molecules by the mitochondrial membrane.
    GO:0051881    regulation of mitochondrial membrane potential    Any process that modulates the establishment or extent of the mitochondrial membrane potential, the electric potential existing across the mitochondrial membrane arising from charges in the membrane itself and from the charges present in the media on either side of the membrane.
    GO:0001836    release of cytochrome c from mitochondria    The process that results in the movement of cytochrome c from the mitochondrial intermembrane space into the cytosol, which is part of the apoptotic signaling pathway and leads to caspase activation.
    GO:0046898    response to cycloheximide    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 cycloheximide stimulus. Cycloheximide (actidione) is an antibiotic produced by some Streptomyces species which interferes with protein synthesis in eukaryotes.
    GO:0034097    response to cytokine    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 cytokine stimulus.
    GO:0009314    response to radiation    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 an electromagnetic radiation stimulus. Electromagnetic radiation is a propagating wave in space with electric and magnetic components. These components oscillate at right angles to each other and to the direction of propagation.
    GO:0009615    response to virus    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 from a virus.
    GO:0007283    spermatogenesis    The process of formation of spermatozoa, including spermatocytogenesis and spermiogenesis.
    GO:0019050    suppression by virus of host apoptotic process    Any viral process that inhibits apoptosis of infected host cells, facilitating prolonged cell survival during viral replication.
cellular component
    GO:0097136    Bcl-2 family protein complex    A protein complex that consists of members of the Bcl-2 family of anti- and proapoptotic regulators. Bcl-2 proteins respond to cues from various forms of intracellular stress, such as DNA damage or cytokine deprivation, and interact with opposing family members to determine whether or not the caspase proteolytic cascade should be unleashed.
    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:0005813    centrosome    A structure comprised of a core structure (in most organisms, a pair of centrioles) and peripheral material from which a microtubule-based structure, such as a spindle apparatus, is organized. Centrosomes occur close to the nucleus during interphase in many eukaryotic cells, though in animal cells it changes continually during the cell-division cycle.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0031410    cytoplasmic vesicle    A vesicle found in the cytoplasm of a cell.
    GO:0005856    cytoskeleton    Any of the various filamentous elements that form the internal framework of cells, and typically remain after treatment of the cells with mild detergent to remove membrane constituents and soluble components of the cytoplasm. The term embraces intermediate filaments, microfilaments, microtubules, the microtrabecular lattice, and other structures characterized by a polymeric filamentous nature and long-range order within the cell. The various elements of the cytoskeleton not only serve in the maintenance of cellular shape but also have roles in other cellular functions, including cellular movement, cell division, endocytosis, and movement of organelles.
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
    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:0005622    intracellular    The living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005815    microtubule organizing center    An intracellular structure that can catalyze gamma-tubulin-dependent microtubule nucleation and that can anchor microtubules by interacting with their minus ends, plus ends or sides.
    GO:0005743    mitochondrial inner membrane    The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
    GO:0005759    mitochondrial matrix    The gel-like material, with considerable fine structure, that lies in the matrix space, or lumen, of a mitochondrion. It contains the enzymes of the tricarboxylic acid cycle and, in some organisms, the enzymes concerned with fatty acid oxidation.
    GO:0031966    mitochondrial membrane    Either of the lipid bilayers that surround the mitochondrion and form the mitochondrial envelope.
    GO:0005741    mitochondrial outer membrane    The outer, i.e. cytoplasm-facing, lipid bilayer of the mitochondrial envelope.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    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:0045202    synapse    The junction between a nerve fiber of one neuron and another neuron, muscle fiber or glial cell. As the nerve fiber approaches the synapse it enlarges into a specialized structure, the presynaptic nerve ending, which contains mitochondria and synaptic vesicles. At the tip of the nerve ending is the presynaptic membrane; facing it, and separated from it by a minute cleft (the synaptic cleft) is a specialized area of membrane on the receiving cell, known as the postsynaptic membrane. In response to the arrival of nerve impulses, the presynaptic nerve ending secretes molecules of neurotransmitters into the synaptic cleft. These diffuse across the cleft and transmit the signal to the postsynaptic membrane.
    GO:0030672    synaptic vesicle membrane    The lipid bilayer surrounding a synaptic vesicle.

Chain B   (BAK_HUMAN | Q16611)
molecular function
    GO:0051400    BH domain binding    Interacting selectively and non-covalently with the Bcl-2 homology (BH) domain of a protein. Bcl-2-related proteins share homology in one to four conserved regions designated the Bcl-2 homology (BH) domains BH1, BH2, BH3 and BH4. These domains contribute at multiple levels to the function of these proteins in cell death and survival. Anti-apoptotic members of the Bcl-2 family have four BH domains (BH1-BH4). Pro-apoptotic members have fewer BH domains.
    GO:0051087    chaperone binding    Interacting selectively and non-covalently with a chaperone protein, a class of proteins that bind to nascent or unfolded polypeptides and ensure correct folding or transport.
    GO:0031072    heat shock protein binding    Interacting selectively and non-covalently with a heat shock protein, any protein synthesized or activated in response to heat shock.
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    GO:0044325    ion channel binding    Interacting selectively and non-covalently with one or more specific sites on an ion channel, a protein complex that spans a membrane and forms a water-filled channel across the phospholipid bilayer allowing selective ion transport down its electrochemical gradient.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    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:0046982    protein heterodimerization activity    Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
    GO:0042803    protein homodimerization activity    Interacting selectively and non-covalently with an identical protein to form a homodimer.
biological process
    GO:0001783    B cell apoptotic process    Any apoptotic process in a B cell, a lymphocyte of B lineage with the phenotype CD19-positive and capable of B cell mediated immunity.
    GO:0001782    B cell homeostasis    The process of regulating the proliferation and elimination of B cells such that the total number of B cells within a whole or part of an organism is stable over time in the absence of an outside stimulus.
    GO:0002352    B cell negative selection    Any process leading to negative selection in B cells. Mechanisms of negative selection include anergy and deletion.
    GO:0097202    activation of cysteine-type endopeptidase activity    Any process that initiates the activity of the inactive enzyme cysteine-type endopeptidase.
    GO:0006919    activation of cysteine-type endopeptidase activity involved in apoptotic process    Any process that initiates the activity of the inactive enzyme cysteine-type endopeptidase in the context of an apoptotic process.
    GO:0008635    activation of cysteine-type endopeptidase activity involved in apoptotic process by cytochrome c    Any process that initiates the activity of the inactive enzyme cysteine-type endopeptidase in the context of an apoptotic process and is mediated by cytochrome c.
    GO:0006987    activation of signaling protein activity involved in unfolded protein response    The conversion of a specific protein, possessing protein kinase and endoribonuclease activities, to an active form as a result of signaling via the unfolded protein response.
    GO:0007568    aging    A developmental process that is a deterioration and loss of function over time. Aging includes loss of functions such as resistance to disease, homeostasis, and fertility, as well as wear and tear. Aging includes cellular senescence, but is more inclusive. May precede death and may succeed developmental maturation (GO:0021700).
    GO:0031100    animal organ regeneration    The regrowth of a lost or destroyed animal organ.
    GO:0006915    apoptotic process    A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.
    GO:1902262    apoptotic process involved in blood vessel morphogenesis    Any apoptotic process that is involved in blood vessel morphogenesis.
    GO:0097190    apoptotic signaling pathway    A series of molecular signals which triggers the apoptotic death of a cell. The pathway starts with reception of a signal, and ends when the execution phase of apoptosis is triggered.
    GO:0001974    blood vessel remodeling    The reorganization or renovation of existing blood vessels.
    GO:0007420    brain development    The process whose specific outcome is the progression of the brain over time, from its formation to the mature structure. Brain development begins with patterning events in the neural tube and ends with the mature structure that is the center of thought and emotion. The brain is responsible for the coordination and control of bodily activities and the interpretation of information from the senses (sight, hearing, smell, etc.).
    GO:0008283    cell proliferation    The multiplication or reproduction of cells, resulting in the expansion of a cell population.
    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: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:0019835    cytolysis    The rupture of cell membranes and the loss of cytoplasm.
    GO:0031018    endocrine pancreas development    The process whose specific outcome is the progression of the endocrine pancreas over time, from its formation to the mature structure. The endocrine pancreas is made up of islet cells that produce insulin, glucagon and somatostatin.
    GO:0032469    endoplasmic reticulum calcium ion homeostasis    Any process involved in the maintenance of an internal steady state of calcium ions within the endoplasmic reticulum of a cell or between the endoplasmic reticulum and its surroundings.
    GO:0010248    establishment or maintenance of transmembrane electrochemical gradient    The directed movement of ions to establish or maintain an electrochemical gradient across a membrane by means of some agent such as a transporter or pore.
    GO:0097192    extrinsic apoptotic signaling pathway in absence of ligand    A series of molecular signals in which a signal is conveyed from the cell surface to trigger the apoptotic death of a cell. The pathway starts with withdrawal of a ligand from a cell surface receptor, and ends when the execution phase of apoptosis is triggered.
    GO:0044346    fibroblast apoptotic process    Any apoptotic process in a fibroblast, a connective tissue cell which secretes an extracellular matrix rich in collagen and other macromolecules.
    GO:0048872    homeostasis of number of cells    Any biological process involved in the maintenance of the steady-state number of cells within a population of cells.
    GO:0008630    intrinsic apoptotic signaling pathway in response to DNA damage    A series of molecular signals in which an intracellular signal is conveyed to trigger the apoptotic death of a cell. The pathway is induced by the detection of DNA damage, and ends when the execution phase of apoptosis is triggered.
    GO:0070059    intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress    A series of molecular signals in which an intracellular signal is conveyed to trigger the apoptotic death of a cell. The pathway is induced in response to a stimulus indicating endoplasmic reticulum (ER) stress, and ends when the execution phase of apoptosis is triggered. ER stress usually results from the accumulation of unfolded or misfolded proteins in the ER lumen.
    GO:0001776    leukocyte homeostasis    The process of regulating the proliferation and elimination of cells of the immune system such that the total number of cells of a particular cell type within a whole or part of an organism is stable over time in the absence of an outside stimulus.
    GO:0035108    limb morphogenesis    The process in which the anatomical structures of a limb are generated and organized. A limb is a paired appendage of a tetrapod used for locomotion or grasping.
    GO:0008053    mitochondrial fusion    Merging of two or more mitochondria within a cell to form a single compartment.
    GO:0002262    myeloid cell homeostasis    The process of regulating the proliferation and elimination of myeloid cells such that the total number of myeloid cells within a whole or part of an organism is stable over time in the absence of an outside stimulus.
    GO:0008285    negative regulation of cell proliferation    Any process that stops, prevents or reduces the rate or extent of cell proliferation.
    GO:0032471    negative regulation of endoplasmic reticulum calcium ion concentration    Any process that decreases the concentration of calcium ions in the endoplasmic reticulum.
    GO:0010629    negative regulation of gene expression    Any process that decreases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA or circRNA (for protein-coding genes) and the translation of that mRNA or circRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.
    GO:0033137    negative regulation of peptidyl-serine phosphorylation    Any process that stops, prevents, or reduces the frequency, rate or extent of the phosphorylation of peptidyl-serine.
    GO:1903896    positive regulation of IRE1-mediated unfolded protein response    Any process that activates or increases the frequency, rate or extent of the IRE1-mediated unfolded protein response.
    GO:0043065    positive regulation of apoptotic process    Any process that activates or increases the frequency, rate or extent of cell death by apoptotic process.
    GO:0010524    positive regulation of calcium ion transport into cytosol    Any process that increases the rate of the directed movement of calcium ions into the cytosol of a cell. The cytosol is that part of the cytoplasm that does not contain membranous or particulate subcellular components.
    GO:1900103    positive regulation of endoplasmic reticulum unfolded protein response    Any process that activates or increases the frequency, rate or extent of endoplasmic reticulum unfolded protein response.
    GO:1901030    positive regulation of mitochondrial outer membrane permeabilization involved in apoptotic signaling pathway    Any process that activates or increases the frequency, rate or extent of mitochondrial outer membrane permeabilization involved in apoptotic signaling pathway.
    GO:0045862    positive regulation of proteolysis    Any process that activates or increases the frequency, rate or extent of the hydrolysis of a peptide bond or bonds within a protein.
    GO:0090200    positive regulation of release of cytochrome c from mitochondria    Any process that increases the rate, frequency or extent of release of cytochrome c from mitochondria, the process in which cytochrome c is enabled to move from the mitochondrial intermembrane space into the cytosol, which is an early step in apoptosis and leads to caspase activation.
    GO:0048597    post-embryonic camera-type eye morphogenesis    The process in which the anatomical structures of the eye are generated and organized during post-embryonic development.
    GO:0042981    regulation of apoptotic process    Any process that modulates the occurrence or rate of cell death by apoptotic process.
    GO:0051726    regulation of cell cycle    Any process that modulates the rate or extent of progression through the cell cycle.
    GO:0046902    regulation of mitochondrial membrane permeability    Any process that modulates the frequency, rate or extent of the passage or uptake of molecules by the mitochondrial membrane.
    GO:0051881    regulation of mitochondrial membrane potential    Any process that modulates the establishment or extent of the mitochondrial membrane potential, the electric potential existing across the mitochondrial membrane arising from charges in the membrane itself and from the charges present in the media on either side of the membrane.
    GO:0043497    regulation of protein heterodimerization activity    Any process that modulates the frequency, rate or extent of protein heterodimerization, interacting selectively with a nonidentical protein to form a heterodimer.
    GO:0043496    regulation of protein homodimerization activity    Any process that modulates the frequency, rate or extent of protein homodimerization, interacting selectively with an identical protein to form a homodimer.
    GO:0001836    release of cytochrome c from mitochondria    The process that results in the movement of cytochrome c from the mitochondrial intermembrane space into the cytosol, which is part of the apoptotic signaling pathway and leads to caspase activation.
    GO:0010225    response to UV-C    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 UV-C radiation stimulus. UV-C radiation (UV-C light) spans the wavelengths 100 to 280 nm.
    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:0045471    response to ethanol    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 an ethanol stimulus.
    GO:0009620    response to fungus    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 from a fungus.
    GO:0010332    response to gamma radiation    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 gamma radiation stimulus. Gamma radiation is a form of electromagnetic radiation (EMR) or light emission of a specific frequency produced from sub-atomic particle interaction, such as electron-positron annihilation and radioactive decay. Gamma rays are generally characterized as EMR having the highest frequency and energy, and also the shortest wavelength, within the electromagnetic radiation spectrum.
    GO:0042542    response to hydrogen peroxide    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 hydrogen peroxide (H2O2) stimulus.
    GO:0010046    response to mycotoxin    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 mycotoxin stimulus. A mycotoxin is a toxic chemical substance produced by fungi.
    GO:0014070    response to organic cyclic compound    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 an organic cyclic compound stimulus.
    GO:0070242    thymocyte apoptotic process    Any apoptotic process in a thymocyte, an immature T cell located in the thymus.
    GO:0060068    vagina development    The reproductive developmental process whose specific outcome is the progression of the vagina over time, from its formation to the mature structure.
cellular component
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
    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: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:0031307    integral component of mitochondrial outer membrane    The component of the mitochondrial outer membrane consisting of the gene products having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0005622    intracellular    The living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0031966    mitochondrial membrane    Either of the lipid bilayers that surround the mitochondrion and form the mitochondrial envelope.
    GO:0005741    mitochondrial outer membrane    The outer, i.e. cytoplasm-facing, lipid bilayer of the mitochondrial envelope.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    GO:0046930    pore complex    Any small opening in a membrane that allows the passage of gases and/or liquids.

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 Related Entries

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

UniProtKB/Swiss-Prot
        B2CL1_HUMAN | Q078171g5j 1g5m 1gjh 1lxl 1maz 1r2d 1r2e 1r2g 1r2h 1r2i 1ysg 1ysi 1ysn 2b48 2lp8 2lpc 2m03 2m04 2me8 2me9 2mej 2o1y 2o21 2o22 2o2m 2o2n 2p1l 2pon 2yj1 2yq6 2yq7 2yxj 3cva 3fdl 3fdm 3inq 3io8 3pl7 3qkd 3r85 3sp7 3spf 3wiz 3zk6 3zln 3zlo 3zlr 4a1u 4a1w 4aq3 4bpk 4c52 4c5d 4cin 4ehr 4hnj 4ieh 4ppi 4qve 4qvf 4qvx 4tuh 4z9v 5agw 5agx 5b1z 5c3g 5fmj 5fmk
        BAK_HUMAN | Q166112ims 2imt 2jby 2jcn 2lp8 2m5b 2xpx 2yv6 3i1h 3qbr 4d2l 4u2u 4u2v 4uf1 5ajk 5fmi 5fmk

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 1BXL)