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(-) Description

Title :  STRUCTURE OF THE FIRST WW DOMAIN OF HUMAN SMURF1 IN COMPLEX WITH A MONO-PHOSPHORYLATED HUMAN SMAD1 DERIVED PEPTIDE
 
Authors :  M. J. Macias, E. Aragon, N. Goerner, A. Zaromytidou, Q. Xi, A. Escobedo, J. Massague
Date :  22 Mar 11  (Deposition) - 06 Jul 11  (Release) - 06 Jul 11  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A,B  (24x)
NMR Structure *:  A,B  (1x)
Keywords :  Smurf, Smad, Cdk, Signal Transduction, Signaling Protein- Transcription Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  E. Aragon, N. Goerner, A. I. Zaromytidou, Q. Xi, A. Escobedo, J. Massague, M. J. Macias
A Smad Action Turnover Switch Operated By Ww Domain Readers Of A Phosphoserine Code.
Genes Dev. V. 25 1275 2011
PubMed-ID: 21685363  |  Reference-DOI: 10.1101/GAD.2060811

(-) Compounds

Molecule 1 - E3 UBIQUITIN-PROTEIN LIGASE SMURF1
    ChainsA
    EC Number6.3.2.-
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System Taxid562
    Expression System VectorPETM11
    FragmentRESIDUES 235-267
    GeneSMURF1, KIAA1625
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymHSMURF1, SMAD UBIQUITINATION REGULATORY FACTOR 1, SMAD- SPECIFIC E3 UBIQUITIN-PROTEIN LIGASE 1
 
Molecule 2 - MOTHERS AGAINST DECAPENTAPLEGIC HOMOLOG 1
    ChainsB
    EngineeredYES
    FragmentRESDIEUS 210-217
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymMAD HOMOLOG 1, MOTHERS AGAINST DPP HOMOLOG 1, JV4-1, MAD- RELATED PROTEIN 1, SMAD FAMILY MEMBER 1, SMAD 1, SMAD1, HSMAD1, TRANSFORMING GROWTH FACTOR-BETA-SIGNALING PROTEIN 1, BSP-1
    SyntheticYES

 Structural Features

(-) Chains, Units

  12
NMR Structure (24x)AB
NMR Structure * (1x)AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 1)

NMR Structure (1, 1)
No.NameCountTypeFull Name
1SEP1Mod. Amino AcidPHOSPHOSERINE
NMR Structure * (1, 1)
No.NameCountTypeFull Name
1SEP1Mod. Amino AcidPHOSPHOSERINE

(-) Sites  (0, 0)

(no "Site" information available for 2LAZ)

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2LAZ)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2LAZ)

(-) Exons   (1, 1)

NMR Structure (1, 1)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.4dENST000003940924dENSE00001517478chr4:146403957-14640402064SMAD1_HUMAN-00--
1.8iENST000003940928iENSE00002198357chr4:146435590-146436165576SMAD1_HUMAN1-1341340--
1.10bENST0000039409210bENSE00001143049chr4:146460956-146461213258SMAD1_HUMAN134-220871B:210-2178
1.11ENST0000039409211ENSE00001143042chr4:146463734-146463850117SMAD1_HUMAN220-259400--
1.12dENST0000039409212dENSE00001143034chr4:146467855-146468076222SMAD1_HUMAN259-333750--
1.13cENST0000039409213cENSE00001698603chr4:146474936-146475192257SMAD1_HUMAN333-418860--
1.14aENST0000039409214aENSE00002060589chr4:146478943-146479106164SMAD1_HUMAN419-465470--

(-) 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:33
 aligned with SMUF1_HUMAN | Q9HCE7 from UniProtKB/Swiss-Prot  Length:757

    Alignment length:33
                                   244       254       264   
          SMUF1_HUMAN   235 ELPEGYEQRTTVQGQVYFLHTQTGVSTWHDPRI 267
               SCOP domains --------------------------------- SCOP domains
               CATH domains --------------------------------- CATH domains
               Pfam domains -WW-2lazA01 A:236-265          -- Pfam domains
         Sec.struct. author ......eeeee...eeeeee....eee...... Sec.struct. author
                 SAPs(SNPs) --------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------- PROSITE
                 Transcript --------------------------------- Transcript
                 2laz A 235 ELPEGYEQRTTVQGQVYFLHTQTGVSTWHDPRI 267
                                   244       254       264   

Chain B from PDB  Type:PROTEIN  Length:8
 aligned with SMAD1_HUMAN | Q15797 from UniProtKB/Swiss-Prot  Length:465

    Alignment length:8
          SMAD1_HUMAN   210 SDPGSPFQ 217
               SCOP domains -------- SCOP domains
               CATH domains -------- CATH domains
               Pfam domains -------- Pfam domains
         Sec.struct. author ........ Sec.struct. author
                 SAPs(SNPs) -------- SAPs(SNPs)
                    PROSITE -------- PROSITE
               Transcript 1 1.10b    Transcript 1
                 2laz B 210 SDPGsPFQ 217
                                |   
                                |   
                              214-SEP

   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  (0, 0)

(no "SCOP Domain" information available for 2LAZ)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2LAZ)

(-) Pfam Domains  (1, 1)

NMR Structure
(-)
Family: WW (77)

(-) Gene Ontology  (90, 98)

NMR Structure(hide GO term definitions)
Chain A   (SMUF1_HUMAN | Q9HCE7)
molecular function
    GO:0070411    I-SMAD binding    Interacting selectively and non-covalently with an inhibitory SMAD signaling protein.
    GO:0070412    R-SMAD binding    Interacting selectively and non-covalently with a receptor-regulated SMAD signaling protein.
    GO:0048185    activin binding    Interacting selectively and non-covalently with activin, a dimer of inhibin-beta subunits.
    GO:0016874    ligase activity    Catalysis of the joining of two substances, or two groups within a single molecule, with the concomitant hydrolysis of the diphosphate bond in ATP or a similar triphosphate.
    GO:0005543    phospholipid binding    Interacting selectively and non-covalently with phospholipids, a class of lipids containing phosphoric acid as a mono- or diester.
    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:0061630    ubiquitin protein ligase activity    Catalysis of the transfer of ubiquitin to a substrate protein via the reaction X-ubiquitin + S -> X + S-ubiquitin, where X is either an E2 or E3 enzyme, the X-ubiquitin linkage is a thioester bond, and the S-ubiquitin linkage is an amide bond: an isopeptide bond between the C-terminal glycine of ubiquitin and the epsilon-amino group of lysine residues in the substrate or, in the linear extension of ubiquitin chains, a peptide bond the between the C-terminal glycine and N-terminal methionine of ubiquitin residues.
    GO:0004842    ubiquitin-protein transferase activity    Catalysis of the transfer of ubiquitin from one protein to another via the reaction X-Ub + Y --> Y-Ub + X, where both X-Ub and Y-Ub are covalent linkages.
biological process
    GO:0030509    BMP signaling pathway    A series of molecular signals initiated by the binding of a member of the BMP (bone morphogenetic protein) family to a receptor on the surface of a target cell, and ending with regulation of a downstream cellular process, e.g. transcription.
    GO:0060071    Wnt signaling pathway, planar cell polarity pathway    The series of molecular signals initiated by binding of a Wnt protein to a receptor on the surface of the target cell where activated receptors signal via downstream effectors including C-Jun N-terminal kinase (JNK) to modulate cytoskeletal elements and control cell polarity.
    GO:0030154    cell differentiation    The process in which relatively unspecialized cells, e.g. embryonic or regenerative cells, acquire specialized structural and/or functional features that characterize the cells, tissues, or organs of the mature organism or some other relatively stable phase of the organism's life history. Differentiation includes the processes involved in commitment of a cell to a specific fate and its subsequent development to the mature state.
    GO:0007398    ectoderm development    The process whose specific outcome is the progression of the ectoderm over time, from its formation to the mature structure. In animal embryos, the ectoderm is the outer germ layer of the embryo, formed during gastrulation.
    GO:0061736    engulfment of target by autophagosome    The membrane invagination process by which an autophagosomal membrane surrounds an object that will be degraded by macroautophagy.
    GO:0030514    negative regulation of BMP signaling pathway    Any process that stops, prevents, or reduces the frequency, rate or extent of the BMP signaling pathway.
    GO:0030279    negative regulation of ossification    Any process that stops, prevents, or reduces the frequency, rate or extent of bone formation.
    GO:0030512    negative regulation of transforming growth factor beta receptor signaling pathway    Any process that stops, prevents, or reduces the frequency, rate or extent of any TGF-beta receptor signaling pathway.
    GO:0002230    positive regulation of defense response to virus by host    Any host process that results in the promotion of antiviral immune response mechanisms, thereby limiting viral replication.
    GO:1903861    positive regulation of dendrite extension    Any process that activates or increases the frequency, rate or extent of dendrite extension.
    GO:0098779    positive regulation of macromitophagy in response to mitochondrial depolarization    The macromitophagy process that is triggered by a detection of the loss of mitochondrial membrane potential.
    GO:2000060    positive regulation of protein ubiquitination involved in ubiquitin-dependent protein catabolic process    Any process that activates or increases the frequency, rate or extent of protein ubiquitination involved in ubiquitin-dependent protein catabolic process.
    GO:0043161    proteasome-mediated ubiquitin-dependent protein catabolic process    The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of ubiquitin, and mediated by the proteasome.
    GO:0006611    protein export from nucleus    The directed movement of a protein from the nucleus into the cytoplasm.
    GO:0034394    protein localization to cell surface    A process in which a protein is transported to, or maintained in, a location within the external part of the cell wall and/or plasma membrane.
    GO:0000209    protein polyubiquitination    Addition of multiple ubiquitin groups to a protein, forming a ubiquitin chain.
    GO:0072661    protein targeting to plasma membrane    The process of directing proteins towards the plasma membrane; usually uses signals contained within the protein.
    GO:0071211    protein targeting to vacuole involved in autophagy    The process of directing proteins towards the vacuole using signals contained within the protein, occurring as part of autophagy, the process in which cells digest parts of their own cytoplasm.
    GO:0016567    protein ubiquitination    The process in which one or more ubiquitin groups are added to a protein.
    GO:0042787    protein ubiquitination involved in ubiquitin-dependent protein catabolic process    The process in which a ubiquitin group, or multiple groups, are covalently attached to the target protein, thereby initiating the degradation of that protein.
    GO:0032801    receptor catabolic process    The chemical reactions and pathways resulting in the breakdown of a receptor molecule, a macromolecule that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function.
    GO:0007179    transforming growth factor beta receptor signaling pathway    A series of molecular signals initiated by the binding of an extracellular ligand to a transforming growth factor beta receptor on the surface of a target cell, and ending with regulation of a downstream cellular process, e.g. transcription.
    GO:0030579    ubiquitin-dependent SMAD protein catabolic process    The chemical reactions and pathways resulting in the breakdown of SMAD signaling proteins by ubiquitination and targeting to the proteasome.
cellular component
    GO:0030424    axon    The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    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: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:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    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:0043025    neuronal cell body    The portion of a neuron that includes the nucleus, but excludes cell projections such as axons and dendrites.
    GO:0005654    nucleoplasm    That part of the nuclear content other than the chromosomes or the nucleolus.
    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.

Chain B   (SMAD1_HUMAN | Q15797)
molecular function
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
    GO:0070411    I-SMAD binding    Interacting selectively and non-covalently with an inhibitory SMAD signaling protein.
    GO:0000978    RNA polymerase II core promoter proximal region sequence-specific DNA binding    Interacting selectively and non-covalently with a sequence of DNA that is in cis with and relatively close to a core promoter for RNA polymerase II.
    GO:0000979    RNA polymerase II core promoter sequence-specific DNA binding    Interacting selectively and non-covalently with the regulatory region composed of the transcription start site and binding sites for transcription factors of the RNA polymerase II basal transcription machinery.
    GO:0070410    co-SMAD binding    Interacting selectively and non-covalently with a common mediator SMAD signaling protein.
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    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.
    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.
    GO:0005057    signal transducer activity, downstream of receptor    Conveys a signal from an upstream receptor or intracellular signal transducer, converting the signal into a form where it can ultimately trigger a change in the state or activity of a cell.
    GO:0003700    transcription factor activity, sequence-specific DNA binding    Interacting selectively and non-covalently with a specific DNA sequence in order to modulate transcription. The transcription factor may or may not also interact selectively with a protein or macromolecular complex.
    GO:0001077    transcriptional activator activity, RNA polymerase II core promoter proximal region sequence-specific binding    Interacting selectively and non-covalently with a sequence of DNA that is in cis with and relatively close to a core promoter for RNA polymerase II (RNAP II) in order to activate or increase the frequency, rate or extent of transcription from the RNAP II promoter.
    GO:0030618    transforming growth factor beta receptor, pathway-specific cytoplasmic mediator activity    A TGF-beta cytoplasmic mediator that is phosphorylated by a TGFbeta receptor and complexes with a common-partner mediator. The- heterocomplex translocates to the nucleus to regulate transcription.
biological process
    GO:0030509    BMP signaling pathway    A series of molecular signals initiated by the binding of a member of the BMP (bone morphogenetic protein) family to a receptor on the surface of a target cell, and ending with regulation of a downstream cellular process, e.g. transcription.
    GO:0000165    MAPK cascade    An intracellular protein kinase cascade containing at least a MAPK, a MAPKK and a MAP3K. The cascade can also contain two additional tiers: the upstream MAP4K and the downstream MAP Kinase-activated kinase (MAPKAPK). The kinases in each tier phosphorylate and activate the kinases in the downstream tier to transmit a signal within a cell.
    GO:0007183    SMAD protein complex assembly    The aggregation, arrangement and bonding together of a set of components to form a protein complex that contains SMAD proteins.
    GO:0060395    SMAD protein signal transduction    The cascade of processes by which a signal interacts with a receptor, causing a change in the activity of a SMAD protein, and ultimately effecting a change in the functioning of the cell.
    GO:0060348    bone development    The process whose specific outcome is the progression of bone over time, from its formation to the mature structure. Bone is the hard skeletal connective tissue consisting of both mineral and cellular components.
    GO:0060038    cardiac muscle cell proliferation    The expansion of a cardiac muscle cell population by cell division.
    GO:0051216    cartilage development    The process whose specific outcome is the progression of a cartilage element over time, from its formation to the mature structure. Cartilage elements are skeletal elements that consist of connective tissue dominated by extracellular matrix containing collagen type II and large amounts of proteoglycan, particularly chondroitin sulfate.
    GO:0071773    cellular response to BMP 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 bone morphogenetic protein (BMP) stimulus.
    GO:0071407    cellular response to organic cyclic compound    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 organic cyclic compound stimulus.
    GO:0009880    embryonic pattern specification    The process that results in the patterns of cell differentiation that will arise in an embryo.
    GO:0007276    gamete generation    The generation and maintenance of gametes in a multicellular organism. A gamete is a haploid reproductive cell.
    GO:0030902    hindbrain development    The process whose specific outcome is the progression of the hindbrain over time, from its formation to the mature structure. The hindbrain is the posterior of the three primary divisions of the developing chordate brain, or the corresponding part of the adult brain (in vertebrates, includes the cerebellum, pons, and medulla oblongata and controls the autonomic functions and equilibrium).
    GO:0042592    homeostatic process    Any biological process involved in the maintenance of an internal steady state.
    GO:0006954    inflammatory response    The immediate defensive reaction (by vertebrate tissue) to infection or injury caused by chemical or physical agents. The process is characterized by local vasodilation, extravasation of plasma into intercellular spaces and accumulation of white blood cells and macrophages.
    GO:0001710    mesodermal cell fate commitment    The cell differentiation process that results in commitment of a cell to become part of the mesoderm.
    GO:0030901    midbrain development    The process whose specific outcome is the progression of the midbrain over time, from its formation to the mature structure. The midbrain is the middle division of the three primary divisions of the developing chordate brain or the corresponding part of the adult brain (in vertebrates, includes a ventral part containing the cerebral peduncles and a dorsal tectum containing the corpora quadrigemina and that surrounds the aqueduct of Sylvius connecting the third and fourth ventricles).
    GO:0008285    negative regulation of cell proliferation    Any process that stops, prevents or reduces the rate or extent of cell proliferation.
    GO:0002051    osteoblast fate commitment    The commitment of mesenchymal cells to the specific cell fate of an osteoblast. An osteoblast is a bone-forming cell which secretes an extracellular matrix. Hydroxyapatite crystals are then deposited into the matrix to form bone.
    GO:0061036    positive regulation of cartilage development    Any process that increases the rate, frequency, or extent of cartilage development, the process whose specific outcome is the progression of the cartilage over time, from its formation to the mature structure. Cartilage is a connective tissue dominated by extracellular matrix containing collagen type II and large amounts of proteoglycan, particularly chondroitin sulfate.
    GO:0010628    positive regulation of gene expression    Any process that increases 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:0045669    positive regulation of osteoblast differentiation    Any process that activates or increases the frequency, rate or extent of osteoblast differentiation.
    GO:0045944    positive regulation of transcription from RNA polymerase II promoter    Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter.
    GO:1901522    positive regulation of transcription from RNA polymerase II promoter involved in cellular response to chemical stimulus    Any positive regulation of transcription from RNA polymerase II promoter that is involved in cellular response to chemical stimulus.
    GO:0031053    primary miRNA processing    Any process involved in the conversion of a primary microRNA transcript into a pre-microRNA molecule.
    GO:0006468    protein phosphorylation    The process of introducing a phosphate group on to a protein.
    GO:0006357    regulation of transcription from RNA polymerase II promoter    Any process that modulates the frequency, rate or extent of transcription from an RNA polymerase II promoter.
    GO:0006355    regulation of transcription, DNA-templated    Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
    GO:0007165    signal transduction    The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell.
    GO:0006366    transcription from RNA polymerase II promoter    The synthesis of RNA from a DNA template by RNA polymerase II, originating at an RNA polymerase II promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs).
    GO:0006351    transcription, DNA-templated    The cellular synthesis of RNA on a template of DNA.
    GO:0007179    transforming growth factor beta receptor signaling pathway    A series of molecular signals initiated by the binding of an extracellular ligand to a transforming growth factor beta receptor on the surface of a target cell, and ending with regulation of a downstream cellular process, e.g. transcription.
    GO:0001657    ureteric bud development    The process whose specific outcome is the progression of the ureteric bud over time, from its formation to the mature structure.
cellular component
    GO:0071141    SMAD protein complex    A protein complex that consists of only SMAD proteins; may be homomeric or heteromeric.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    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:0005637    nuclear inner membrane    The inner, i.e. lumen-facing, lipid bilayer of the nuclear envelope.
    GO:0005654    nucleoplasm    That part of the nuclear content other than the chromosomes or the nucleolus.
    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:0043234    protein complex    A stable macromolecular complex composed (only) of two or more polypeptide subunits along with any covalently attached molecules (such as lipid anchors or oligosaccharide) or non-protein prosthetic groups (such as nucleotides or metal ions). Prosthetic group in this context refers to a tightly bound cofactor. The component polypeptide subunits may be identical.
    GO:0005667    transcription factor complex    A protein complex that is capable of associating with DNA by direct binding, or via other DNA-binding proteins or complexes, and regulating transcription.

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 Related Entries

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

UniProtKB/Swiss-Prot
        SMAD1_HUMAN | Q157971khu 2law 2lax 2lay 2lb0 2lb1 3q47 3q4a
        SMUF1_HUMAN | Q9HCE72lb0 2lb1 2ltx 3pyc

(-) Related Entries Specified in the PDB File

2law 2lax 2lay 2lb0 2lb1 2lb2 2lb3