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(-) Description

Title :  CRYSTAL STRUCTURE OF SIAH1 AT 1.95 A RESOLUTION
 
Authors :  V. Rimsa, T. C. Eadsforth, W. N. Hunter
Date :  04 Oct 13  (Deposition) - 16 Oct 13  (Release) - 18 Dec 13  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.95
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Ligase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  V. Rimsa, T. C. Eadsforth, W. N. Hunter
Two High-Resolution Structures Of The Human E3 Ubiquitin Ligase Siah1.
Acta Crystallogr. , Sect. F V. 96 1339 2013
PubMed-ID: 24316825  |  Reference-DOI: 10.1107/S1744309113031448

(-) Compounds

Molecule 1 - E3 UBIQUITIN-PROTEIN LIGASE SIAH1
    ChainsA, B
    EC Number6.3.2.-
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System StrainBL21(DE3)
    Expression System Taxid469008
    Expression System VariantGOLD
    Expression System VectorPET15B
    Expression System Vector TypePLASMID
    FragmentTWO ZINC FINGERS AND SUBSTRATE BINDING DOMAIN, RESIDUES 91-282
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymSEVEN IN ABSENTIA HOMOLOG 1, SIAH-1, SIAH-1A

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (5, 16)

Asymmetric/Biological Unit (5, 16)
No.NameCountTypeFull Name
1CL4Ligand/IonCHLORIDE ION
2GOL3Ligand/IonGLYCEROL
3SO43Ligand/IonSULFATE ION
4TRS2Ligand/Ion2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
5ZN4Ligand/IonZINC ION

(-) Sites  (15, 15)

Asymmetric Unit (15, 15)
No.NameEvidenceResiduesDescription
01AC1SOFTWARECYS A:128 , CYS A:135 , HIS A:147 , HIS A:152BINDING SITE FOR RESIDUE ZN A 283
02AC2SOFTWARECYS A:98 , CYS A:105 , HIS A:117 , CYS A:121BINDING SITE FOR RESIDUE ZN A 284
03AC3SOFTWARECYS B:128 , CYS B:135 , HIS B:147 , HIS B:152BINDING SITE FOR RESIDUE ZN B 283
04AC4SOFTWARECYS B:98 , CYS B:105 , HIS B:117 , CYS B:121BINDING SITE FOR RESIDUE ZN B 284
05AC5SOFTWAREARG A:224BINDING SITE FOR RESIDUE CL A1283
06AC6SOFTWAREARG B:224BINDING SITE FOR RESIDUE CL B1286
07AC7SOFTWAREHIS A:230 , ARG A:232BINDING SITE FOR RESIDUE CL A1285
08AC8SOFTWAREGLU A:237 , ALA A:238 , HOH A:2106 , HOH A:2142 , ARG B:231 , ARG B:232 , ARG B:233 , HOH B:2057BINDING SITE FOR RESIDUE TRS B1283
09AC9SOFTWAREARG A:231 , ARG A:232 , ARG A:233 , HOH A:2143 , ALA B:222BINDING SITE FOR RESIDUE GOL A1286
10BC1SOFTWAREGLU A:161 , CYS A:184 , PHE A:185 , GLY A:186 , PHE A:187 , HOH A:2144 , HOH A:2145BINDING SITE FOR RESIDUE GOL A1287
11BC2SOFTWARETHR A:239 , ARG A:241 , HOH A:2080 , ARG B:231 , ARG B:232BINDING SITE FOR RESIDUE SO4 B1284
12BC3SOFTWAREHIS A:244 , PRO B:146 , HIS B:147 , HIS B:150 , GLN B:151 , HOH B:2013BINDING SITE FOR RESIDUE SO4 B1285
13BC4SOFTWARECYS A:130 , HIS A:152 , LYS A:153 , SER A:154BINDING SITE FOR RESIDUE GOL A1288
14BC5SOFTWAREGLU A:119 , ARG A:124 , THR A:214 , ARG A:215 , HIS A:244 , HOH A:2076 , HOH A:2078 , HOH A:2110BINDING SITE FOR RESIDUE SO4 A1289
15BC6SOFTWAREGLU A:219 , ASN A:220 , CYS A:282 , HOH A:2083 , HOH A:2140 , HOH A:2146BINDING SITE FOR RESIDUE TRS A1290

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 4C9Z)

(-) Cis Peptide Bonds  (3, 3)

Asymmetric/Biological Unit
No.Residues
1Pro A:131 -Gly A:132
2Pro B:131 -Gly B:132
3Ala B:133 -Ser B:134

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 4C9Z)

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1ZF_SIAHPS51081 Zinc finger SIAH-type profile.SIAH1_HUMAN93-153  1A:93-153

(-) Exons   (1, 2)

Asymmetric/Biological Unit (1, 2)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1ENST000003947251ENSE00001654032chr16:48419361-48419115247SIAH1_HUMAN-00--
1.3bENST000003947253bENSE00001810260chr16:48396341-483944421900SIAH1_HUMAN1-2832832A:90-282
B:95-282
193
188

(-) 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:193
 aligned with SIAH1_HUMAN | Q8IUQ4 from UniProtKB/Swiss-Prot  Length:282

    Alignment length:193
                                    99       109       119       129       139       149       159       169       179       189       199       209       219       229       239       249       259       269       279   
          SIAH1_HUMAN    90 VANSVLFPCKYASSGCEITLPHTEKADHEELCEFRPYSCPCPGASCKWQGSLDAVMPHLMHQHKSITTLQGEDIVFLATDINLPGAVDWVMMQSCFGFHFMLVLEKQEKYDGHQQFFAIVQLIGTRKQAENFAYRLELNGHRRRLTWEATPRSIHEGIATAIMNSDCLVFDTSIAQLFAENGNLGINVTISMC 282
               SCOP domains d4c9za_ A: automated matches                                                                                                                                                                      SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ......ee..........eehhhhhhhhhh......ee..........eehhhhhhhhhhhhh...eeee..eeeeee.........eeeeeeee..eeeeeeeeeeeee..eeeeeeeeee..hhhhhh.eeeeeeeee..eeeeeee..ee....hhhhhhh...eeeehhhhhhhee..eeeeeeeeee. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---ZF_SIAH  PDB: A:93-153 UniProt: 93-153                       --------------------------------------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.3b  PDB: A:90-282 UniProt: 1-283 [INCOMPLETE]                                                                                                                                              Transcript 1
                 4c9z A  90 MANSVLFPCKYASSGCEITLPHTEKADHEELCEFRPYSCPCPGASCKWQGSLDAVMPHLMHQHKSITTLQGEDIVFLATDINLPGAVDWVMMQSCFGFHFMLVLEKQEKYDGHQQFFAIVQLIGTRKQAENFAYRLELNGHRRRLTWEATPRSIHEGIATAIMNSDCLVFDTSIAQLFAENGNLGINVTISMC 282
                                    99       109       119       129       139       149       159       169       179       189       199       209       219       229       239       249       259       269       279   

Chain B from PDB  Type:PROTEIN  Length:188
 aligned with SIAH1_HUMAN | Q8IUQ4 from UniProtKB/Swiss-Prot  Length:282

    Alignment length:188
                                   104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274        
          SIAH1_HUMAN    95 LFPCKYASSGCEITLPHTEKADHEELCEFRPYSCPCPGASCKWQGSLDAVMPHLMHQHKSITTLQGEDIVFLATDINLPGAVDWVMMQSCFGFHFMLVLEKQEKYDGHQQFFAIVQLIGTRKQAENFAYRLELNGHRRRLTWEATPRSIHEGIATAIMNSDCLVFDTSIAQLFAENGNLGINVTISMC 282
               SCOP domains d4c9zb_ B: automated matches                                                                                                                                                                 SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .ee..hhhhh...eehhhhhhhhhhhh....ee..........eehhhhhhhhhhhhh....eee..eeeeee........eeeeeeeee..eeeeeeeeeeeee..eeeeeeeeee..hhhhhh.eeeeeeeee..eeeeeee..ee....hhhhhhh...eeeehhhhhhhh....eeeeeeeee. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ZF_SIAH  PDB: - UniProt: 93-153                            --------------------------------------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.3b  PDB: B:95-282 UniProt: 1-283 [INCOMPLETE]                                                                                                                                         Transcript 1
                 4c9z B  95 LFPCKYASSGCEITLPHTEKADHEELCEFRPYSCPCPGASCKWQGSLDAVMPHLMHQHKSITTLQGEDIVFLATDINLPGAVDWVMMQSCFGFHFMLVLEKQEKYDGHQQFFAIVQLIGTRKQAENFAYRLELNGHRRRLTWEATPRSIHEGIATAIMNSDCLVFDTSIAQLFAENGNLGINVTISMC 282
                                   104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274        

   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, 2)

Asymmetric/Biological Unit

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 4C9Z)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 4C9Z)

(-) Gene Ontology  (33, 33)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (SIAH1_HUMAN | Q8IUQ4)
molecular function
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    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:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0008022    protein C-terminus binding    Interacting selectively and non-covalently with a protein C-terminus, the end of any peptide chain at which the 1-carboxy function of a constituent amino acid is not attached in peptide linkage to another amino-acid residue.
    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.
    GO:0008270    zinc ion binding    Interacting selectively and non-covalently with zinc (Zn) ions.
biological process
    GO:0009653    anatomical structure morphogenesis    The process in which anatomical structures are generated and organized. Morphogenesis pertains to the creation of form.
    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:0007411    axon guidance    The chemotaxis process that directs the migration of an axon growth cone to a specific target site in response to a combination of attractive and repulsive cues.
    GO:0007049    cell cycle    The progression of biochemical and morphological phases and events that occur in a cell during successive cell replication or nuclear replication events. Canonically, the cell cycle comprises the replication and segregation of genetic material followed by the division of the cell, but in endocycles or syncytial cells nuclear replication or nuclear division may not be followed by cell division.
    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:0044267    cellular protein metabolic process    The chemical reactions and pathways involving a specific protein, rather than of proteins in general, occurring at the level of an individual cell. Includes cellular protein modification.
    GO:0007275    multicellular organism development    The biological process whose specific outcome is the progression of a multicellular organism over time from an initial condition (e.g. a zygote or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).
    GO:0007399    nervous system development    The process whose specific outcome is the progression of nervous tissue over time, from its formation to its mature state.
    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:0043065    positive regulation of apoptotic process    Any process that activates or increases the frequency, rate or extent of cell death by apoptotic process.
    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: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:0030163    protein catabolic process    The chemical reactions and pathways resulting in the breakdown of a protein by the destruction of the native, active configuration, with or without the hydrolysis of peptide bonds.
    GO:0031648    protein destabilization    Any process that decreases the stability of a protein, making it more vulnerable to degradative processes or aggregation.
    GO:0000209    protein polyubiquitination    Addition of multiple ubiquitin groups to a protein, forming a ubiquitin chain.
    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:0007283    spermatogenesis    The process of formation of spermatozoa, including spermatocytogenesis and spermiogenesis.
    GO:0006511    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 a ubiquitin group, or multiple ubiquitin groups, to the protein.
cellular component
    GO:0030877    beta-catenin destruction complex    A cytoplasmic protein complex containing glycogen synthase kinase-3-beta (GSK-3-beta), the adenomatous polyposis coli protein (APC), and the scaffolding protein axin, among others; phosphorylates beta-catenin, targets it for degradation by the proteasome.
    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:0005769    early endosome    A membrane-bounded organelle that receives incoming material from primary endocytic vesicles that have been generated by clathrin-dependent and clathrin-independent endocytosis; vesicles fuse with the early endosome to deliver cargo for sorting into recycling or degradation pathways.
    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.

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 Related Entries

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

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        SIAH1_HUMAN | Q8IUQ42a25 4ca1 4i7b 4i7c 4i7d 4x3g

(-) Related Entries Specified in the PDB File

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