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Title :  MISMATCH REPAIR IN METHYLATED DNA. STRUCTURE OF THE MISMATCH-SPECIFIC THYMINE GLYCOSYLASE DOMAIN OF METHYL-CPG-BINDING PROTEIN MBD4
 
Authors :  P. Wu, C. Qiu, A. Sohail, X. Zhang, A. S. Bhagwat, X. Cheng
Date :  17 Dec 02  (Deposition) - 18 Mar 03  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.10
Chains :  Asym./Biol. Unit :  A
Keywords :  Mismacth Repair In Methylated Dna, Dna Binding Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  P. Wu, C. Qiu, A. Sohail, X. Zhang, A. S. Bhagwat, X. Cheng
Mismatch Repair In Methylated Dna. Structure And Activity Of The Mismatch-Specific Thymine Glycosylase Domain Of Methyl-Cpg-Binding Protein Mbd4
J. Biol. Chem. V. 278 5285 2003
PubMed-ID: 12456671  |  Reference-DOI: 10.1074/JBC.M210884200
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - METHYL-CPG BINDING PROTEIN MBD4
    ChainsA
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidMODIFIED PET28B
    Expression System Taxid562
    FragmentGLYCOSYLASE DOMAIN
    GeneMBD4
    Organism CommonHOUSE MOUSE
    Organism ScientificMUS MUSCULUS
    Organism Taxid10090

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit A

Summary Information (see also Sequences/Alignments below)

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

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 Sequence-Structure Mapping

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(-) PROSITE Motifs  (0, 0)

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(-) Exons   (0, 0)

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(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
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  UniProt sequence: complete  aligned part    
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SAPs(SNPs) PROSITE motifs Exons
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Chain A from PDB  Type:PROTEIN  Length:144
 aligned with MBD4_MOUSE | Q9Z2D7 from UniProtKB/Swiss-Prot  Length:554

    Alignment length:144
                                   420       430       440       450       460       470       480       490       500       510       520       530       540       550    
           MBD4_MOUSE   411 KWTPPRSPFNLVQEILFHDPWKLLIATIFLNRTSGKMAIPVLWEFLEKYPSAEVARAADWRDVSELLKPLGLYDLRAKTIIKFSDEYLTKQWRYPIELHGIGKYGNDSYRIFCVNEWKQVHPEDHKLNKYHDWLWENHEKLSLS 554
               SCOP domains d1ngna_ A: Mismatch-specific thymine glycosylase domain of the methyl-GpG binding protein mbd4                                                   SCOP domains
               CATH domains 1ngnA00 A:411-554 Hypothetical protein; domain 2                                                                                                 CATH domains
               Pfam domains ------------------------HhH-GPD-1ngnA01 A:435-546                                                                                       -------- Pfam domains
         Sec.struct. author ...........hhhhhh.hhhhhhhhhhhhh..hhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhh...hhhhhhhhhhhh..hhhhh...hhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1ngn A 411 KWTPPRSPFNLVQEILFHDPWKLLIATIFLNRTSGKMAIPVLWEFLEKYPSAEVARAADWRDVSELLKPLGLYDLRAKTIIKFSDEYLTKQWRYPIELHGIGKYGNDSYRIFCVNEWKQVHPEDHKLNKYHDWLWENHEKLSLS 554
                                   420       430       440       450       460       470       480       490       500       510       520       530       540       550    

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

 Classification and Annotation

(-) SCOP Domains  (1, 1)

Asymmetric/Biological Unit

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Clan: HHH (112)

(-) Gene Ontology  (14, 14)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (MBD4_MOUSE | Q9Z2D7)
molecular function
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
    GO:0003824    catalytic activity    Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
    GO:0016787    hydrolase activity    Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
    GO:0008263    pyrimidine-specific mismatch base pair DNA N-glycosylase activity    Catalysis of the removal of mismatched pyrimidine bases in DNA. Enzymes with this activity recognize and remove pyrimidines present in mismatches by cleaving the N-C1' glycosidic bond between the target damaged DNA base and the deoxyribose sugar. The reaction releases a free base and leaves an apyrimidinic (AP) site.
biological process
    GO:0006306    DNA methylation    The covalent transfer of a methyl group to either N-6 of adenine or C-5 or N-4 of cytosine.
    GO:0006281    DNA repair    The process of restoring DNA after damage. Genomes are subject to damage by chemical and physical agents in the environment (e.g. UV and ionizing radiations, chemical mutagens, fungal and bacterial toxins, etc.) and by free radicals or alkylating agents endogenously generated in metabolism. DNA is also damaged because of errors during its replication. A variety of different DNA repair pathways have been reported that include direct reversal, base excision repair, nucleotide excision repair, photoreactivation, bypass, double-strand break repair pathway, and mismatch repair pathway.
    GO:0006974    cellular response to DNA damage 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 stimulus indicating damage to its DNA from environmental insults or errors during metabolism.
    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:0007095    mitotic G2 DNA damage checkpoint    A mitotic cell cycle checkpoint that detects and negatively regulates progression through the G2/M transition of the cell cycle in response to DNA damage.
    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.
cellular component
    GO:0000785    chromatin    The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    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.

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 Related Entries

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

UniProtKB/Swiss-Prot
        MBD4_MOUSE | Q9Z2D73vxv 3vxx 3vyb 3vyq 4evv 4ew0 4ew4

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