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(-) Description

Title :  HUMAN ISG20
 
Authors :  T. Horio, M. Murai, T. Inoue, T. Hamasaki, T. Tanaka, T. Ohgi
Date :  28 Jun 04  (Deposition) - 21 Dec 04  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.90
Chains :  Asym./Biol. Unit :  A
Keywords :  Exoribonuclease, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  T. Horio, M. Murai, T. Inoue, T. Hamasaki, T. Tanaka, T. Ohgi
Crystal Structure Of Human Isg20, An Interferon-Induced Antiviral Ribonuclease
Febs Lett. V. 577 111 2004
PubMed-ID: 15527770  |  Reference-DOI: 10.1016/J.FEBSLET.2004.09.074
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - INTERFERON STIMULATED GENE 20KDA
    ChainsA
    EC Number3.1.-.-
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPET28A
    Expression System Taxid562
    Expression System Vector TypePLASMID
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymINTERFERON STIMULATED GENE PRODUCT OF 20KDA, INTERFERON STIMULATED GENE (20KD)

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 5)

Asymmetric/Biological Unit (3, 5)
No.NameCountTypeFull Name
1ACT1Ligand/IonACETATE ION
2MN3Ligand/IonMANGANESE (II) ION
3U5P1Ligand/IonURIDINE-5'-MONOPHOSPHATE

(-) Sites  (5, 5)

Asymmetric Unit (5, 5)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASP A:11 , GLU A:13 , ASP A:154 , U5P A:300BINDING SITE FOR RESIDUE MN A 200
2AC2SOFTWAREASP A:11 , U5P A:300 , HOH A:347 , HOH A:348 , HOH A:349 , HOH A:350BINDING SITE FOR RESIDUE MN A 201
3AC3SOFTWAREASP A:90 , HIS A:93BINDING SITE FOR RESIDUE MN A 202
4AC4SOFTWARETHR A:50 , TYR A:108 , ASP A:109 , THR A:112 , HOH A:353BINDING SITE FOR RESIDUE ACT A 203
5AC5SOFTWAREASP A:11 , CYS A:12 , GLU A:13 , MET A:14 , ARG A:53 , SER A:57 , GLN A:143 , HIS A:149 , ASP A:154 , MN A:200 , MN A:201 , HOH A:321 , HOH A:341 , HOH A:350BINDING SITE FOR RESIDUE U5P A 300

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1WLJ)

(-) Exons   (3, 3)

Asymmetric/Biological Unit (3, 3)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1aENST000003060721aENSE00001938266chr15:89181974-89182307334ISG20_HUMAN-00--
1.2ENST000003060722ENSE00001739197chr15:89182574-89182825252ISG20_HUMAN1-76761A:6-7671
1.4ENST000003060724ENSE00001161714chr15:89195341-89195541201ISG20_HUMAN77-143671A:77-143 (gaps)67
1.5ENST000003060725ENSE00001480192chr15:89198646-891997141069ISG20_HUMAN144-181381A:144-17835

(-) 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:168
 aligned with ISG20_HUMAN | Q96AZ6 from UniProtKB/Swiss-Prot  Length:181

    Alignment length:173
                                    15        25        35        45        55        65        75        85        95       105       115       125       135       145       155       165       175   
          ISG20_HUMAN     6 EVVAMDCEMVGLGPHRESGLARCSLVNVHGAVLYDKFIRPEGEITDYRTRVSGVTPQHMVGATPFAVARLEILQLLKGKLVVGHDLKHDFQALKEDMSGYTIYDTSTDRLLWREAKLDHCRRVSLRVLSERLLHKSIQNSLLGHSSVEDARATMELYQISQRIRARRGLPRLA 178
               SCOP domains d1wlja_ A: Interferon-stimulated gene 20 kDa protein, ISG20                                                                                                                   SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --RNase_T-1wljA01 A:8-162                                                                                                                                    ---------------- Pfam domains
         Sec.struct. author .eeeeeeeeeee....eeeeeeeeee.....eeeeeeee........hhhhhh.hhhhhh....hhhhhhhhhhhhh..eeee.hhhhhhhhh.......eeee...hhhhhhhhh.-----.hhhhhhhhhh...........hhhhhhhhhhhhhhhhhhhhhhh...... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.2  PDB: A:6-76 UniProt: 1-76 [INCOMPLETE]                       Exon 1.4  PDB: A:77-143 (gaps) UniProt: 77-143                     Exon 1.5  PDB: A:144-178            Transcript 1
                 1wlj A   6 EVVAMDCEMVGLGPHRESGLARCSLVNVHGAVLYDKFIRPEGEITDYRTRVSGVTPQHMVGATPFAVARLEILQLLKGKLVVGHDLKHDFQALKEDMSGYTIYDTSTDRLLWREAKL-----VSLRVLSERLLHKSIQNSLLGHSSVEDARATMELYQISQRIRARRGLPRLA 178
                                    15        25        35        45        55        65        75        85        95       105       115      |  -  |    135       145       155       165       175   
                                                                                                                                              122   128                                                  

   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
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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  (0, 0)

(no "CATH Domain" information available for 1WLJ)

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Clan: RNase_H (288)

(-) Gene Ontology  (29, 29)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (ISG20_HUMAN | Q96AZ6)
molecular function
    GO:0000175    3'-5'-exoribonuclease activity    Catalysis of the sequential cleavage of mononucleotides from a free 3' terminus of an RNA molecule.
    GO:0003723    RNA binding    Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
    GO:0030619    U1 snRNA binding    Interacting selectively and non-covalently with the U1 small nuclear RNA (U1 snRNA).
    GO:0030620    U2 snRNA binding    Interacting selectively and non-covalently with the U2 small nuclear RNA (U2 snRNA).
    GO:0034511    U3 snoRNA binding    Interacting selectively and non-covalently with U3 small nucleolar RNA.
    GO:0004527    exonuclease activity    Catalysis of the hydrolysis of ester linkages within nucleic acids by removing nucleotide residues from the 3' or 5' end.
    GO:0008859    exoribonuclease II activity    Catalysis of the reaction: RNA + H2O = 5'-phosphomononucleotides. Cleaves RNA in the 3' to 5' direction.
    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:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0004518    nuclease activity    Catalysis of the hydrolysis of ester linkages within nucleic acids.
    GO:0003676    nucleic acid binding    Interacting selectively and non-covalently with any nucleic acid.
    GO:0008310    single-stranded DNA 3'-5' exodeoxyribonuclease activity    Catalysis of the sequential cleavage of mononucleotides from a free 3' terminus of a single-stranded DNA molecule.
biological process
    GO:0000738    DNA catabolic process, exonucleolytic    The chemical reactions and pathways resulting in the breakdown of DNA, involving the hydrolysis of terminal 3',5'-phosphodiester bonds in one or two strands of deoxyribonucleotides.
    GO:0006401    RNA catabolic process    The chemical reactions and pathways resulting in the breakdown of RNA, ribonucleic acid, one of the two main type of nucleic acid, consisting of a long, unbranched macromolecule formed from ribonucleotides joined in 3',5'-phosphodiester linkage.
    GO:0090503    RNA phosphodiester bond hydrolysis, exonucleolytic    The chemical reactions and pathways involving the hydrolysis of terminal 3',5'-phosphodiester bonds in one or two strands of ribonucleotides.
    GO:0008283    cell proliferation    The multiplication or reproduction of cells, resulting in the expansion of a cell population.
    GO:0051607    defense response to virus    Reactions triggered in response to the presence of a virus that act to protect the cell or organism.
    GO:0002376    immune system process    Any process involved in the development or functioning of the immune system, an organismal system for calibrated responses to potential internal or invasive threats.
    GO:0045087    innate immune response    Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens.
    GO:0045071    negative regulation of viral genome replication    Any process that stops, prevents, or reduces the frequency, rate or extent of viral genome replication.
    GO:0006364    rRNA processing    Any process involved in the conversion of a primary ribosomal RNA (rRNA) transcript into one or more mature rRNA molecules.
    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:0060337    type I interferon signaling pathway    A series of molecular signals initiated by the binding of a type I interferon to a receptor on the surface of a cell, and ending with regulation of a downstream cellular process, e.g. transcription. Type I interferons include the interferon-alpha, beta, delta, episilon, zeta, kappa, tau, and omega gene families.
cellular component
    GO:0015030    Cajal body    A class of nuclear body, first seen after silver staining by Ramon y Cajal in 1903, enriched in small nuclear ribonucleoproteins, and certain general RNA polymerase II transcription factors; ultrastructurally, they appear as a tangle of coiled, electron-dense threads roughly 0.5 micrometers in diameter; involved in aspects of snRNP biogenesis; the protein coilin serves as a marker for Cajal bodies. Some argue that Cajal bodies are the sites for preassembly of transcriptosomes, unitary particles involved in transcription and processing of RNA.
    GO:0016605    PML body    A class of nuclear body; they react against SP100 auto-antibodies (PML, promyelocytic leukemia); cells typically contain 10-30 PML bodies per nucleus; alterations in the localization of PML bodies occurs after viral infection.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0005730    nucleolus    A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome.
    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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