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(-) Description

Title :  AURORA KINASE SELECTIVE INHIBITORS IDENTIFIED USING A TAXOL-INDUCED CHECKPOINT SENSITIVITY SCREEN.
 
Authors :  N. Kwiatkowski, F. Villa, A. Musacchio, N. Gray
Date :  12 Jul 11  (Deposition) - 01 Feb 12  (Release) - 01 Feb 12  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.95
Chains :  Asym. Unit :  A,B,C,D
Biol. Unit 1:  A,D  (1x)
Biol. Unit 2:  B,C  (1x)
Keywords :  Transferase-Cell Cycle Complex, Transferase, Taxol-Induced Checkpoint Inhibitor (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  N. Kwiatkowski, X. Deng, J. Wang, L. Tan, F. Villa, S. Santaguida, H. C. Huang, T. Mitchison, A. Musacchio, N. Gray
Selective Aurora Kinase Inhibitors Identified Using A Taxol- Induced Checkpoint Sensitivity Screen.
Acs Chem. Biol. V. 7 185 2012
PubMed-ID: 21992004  |  Reference-DOI: 10.1021/CB200305U

(-) Compounds

Molecule 1 - SERINE/THREONINE-PROTEIN KINASE 12-A
    ChainsA, B
    EC Number2.7.11.1
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System Taxid562
    FragmentKINASE DOMAIN, RESIDUES 78-361
    Organism ScientificXENOPUS LAEVIS
    Organism Taxid8355
    SynonymAURORA B, AURORA KINASE B-A, AURORA/IPL1-RELATED KINASE 2, A XAIRK2, SERINE/THREONINE-PROTEIN KINASE AURORA-B-A, XAURORA-B
 
Molecule 2 - INNER CENTROMERE PROTEIN A
    ChainsC, D
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System Taxid562
    FragmentRESIDUES 797-840
    Organism ScientificXENOPUS LAEVIS
    Organism Taxid8355
    SynonymXL-INCENP, XINC, XINCENP, MITOTIC PHOSPHOPROTEIN 130

 Structural Features

(-) Chains, Units

  1234
Asymmetric Unit ABCD
Biological Unit 1 (1x)A  D
Biological Unit 2 (1x) BC 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 4)

Asymmetric Unit (2, 4)
No.NameCountTypeFull Name
1TPO2Mod. Amino AcidPHOSPHOTHREONINE
2ZTX2Ligand/Ion2-((4-(4-HYDROXYPIPERIDIN-1-YL)PHENYL)AMINO)-5,11-DIMETHYL-5H-BENZO[E]PYRIMIDO [5,4-B][1,4]DIAZEPIN-6(11H)-ONE
Biological Unit 1 (2, 2)
No.NameCountTypeFull Name
1TPO1Mod. Amino AcidPHOSPHOTHREONINE
2ZTX1Ligand/Ion2-((4-(4-HYDROXYPIPERIDIN-1-YL)PHENYL)AMINO)-5,11-DIMETHYL-5H-BENZO[E]PYRIMIDO [5,4-B][1,4]DIAZEPIN-6(11H)-ONE
Biological Unit 2 (2, 2)
No.NameCountTypeFull Name
1TPO1Mod. Amino AcidPHOSPHOTHREONINE
2ZTX1Ligand/Ion2-((4-(4-HYDROXYPIPERIDIN-1-YL)PHENYL)AMINO)-5,11-DIMETHYL-5H-BENZO[E]PYRIMIDO [5,4-B][1,4]DIAZEPIN-6(11H)-ONE

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREVAL A:107 , ALA A:120 , LEU A:170 , GLU A:171 , PHE A:172 , ALA A:173 , GLY A:176 , GLU A:177 , LEU A:223BINDING SITE FOR RESIDUE ZTX A1357
2AC2SOFTWAREALA B:120 , LEU B:170 , GLU B:171 , PHE B:172 , ALA B:173 , PRO B:174 , GLY B:176 , LEU B:223BINDING SITE FOR RESIDUE ZTX B1356

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3ZTX)

(-) Cis Peptide Bonds  (2, 2)

Asymmetric Unit
No.Residues
1Phe A:104 -Gly A:105
2Gly B:105 -Asn B:106

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3ZTX)

(-) PROSITE Motifs  (2, 4)

Asymmetric Unit (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PROTEIN_KINASE_ATPPS00107 Protein kinases ATP-binding region signature.AUKBA_XENLA99-122
 
  2A:99-122
B:99-122
2PROTEIN_KINASE_STPS00108 Serine/Threonine protein kinases active-site signature.AUKBA_XENLA212-224
 
  2A:212-224
B:212-224
Biological Unit 1 (2, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PROTEIN_KINASE_ATPPS00107 Protein kinases ATP-binding region signature.AUKBA_XENLA99-122
 
  1A:99-122
-
2PROTEIN_KINASE_STPS00108 Serine/Threonine protein kinases active-site signature.AUKBA_XENLA212-224
 
  1A:212-224
-
Biological Unit 2 (2, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PROTEIN_KINASE_ATPPS00107 Protein kinases ATP-binding region signature.AUKBA_XENLA99-122
 
  1-
B:99-122
2PROTEIN_KINASE_STPS00108 Serine/Threonine protein kinases active-site signature.AUKBA_XENLA212-224
 
  1-
B:212-224

(-) Exons   (0, 0)

(no "Exon" information available for 3ZTX)

(-) Sequences/Alignments

Asymmetric 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:270
 aligned with AUKBA_XENLA | Q6DE08 from UniProtKB/Swiss-Prot  Length:361

    Alignment length:270
                                    96       106       116       126       136       146       156       166       176       186       196       206       216       226       236       246       256       266       276       286       296       306       316       326       336       346       356
          AUKBA_XENLA    87 KFTIDDFDIGRPLGKGKFGNVYLAREKQNKFIMALKVLFKSQLEKEGVEHQLRREIEIQSHLRHPNILRMYNYFHDRKRIYLMLEFAPRGELYKELQKHGRFDEQRSATFMEELADALHYCHERKVIHRDIKPENLLMGYKGELKIADFGWSVHAPSLRRRTMCGTLDYLPPEMIEGKTHDEKVDLWCAGVLCYEFLVGMPPFDSPSHTETHRRIVNVDLKFPPFLSDGSKDLISKLLRYHPPQRLPLKGVMEHPWVKANSRRVLPPVYQ 356
               SCOP domains d3ztxa_ A: automated matches                                                                                                                                                                                                                                                   SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..hhh.eeeeeeeee...eeeeeeee....eeeeeeeeehhhhhhh.hhhhhhhhhhhhh.........eeeeee...eeeeee.....eehhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhh.ee....hhh.eee.....eee......ee...........hhhhhhhhhhh......hhhhhhhhhhhhhhhhh.......hhhhhhhhhhh.........hhhhhhhhhhhh..hhhhh.hhhhhhhhhhhhhhh......... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------PROTEIN_KINASE_ATP      -----------------------------------------------------------------------------------------PROTEIN_KINAS------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 3ztx A  87 KFTIDDFDIGRPLGKGKFGNVYLAREKQNKFIMALKVLFKSQLEKEGVEHQLRREIEIQSHLRHPNILRMYNYFHDRKRIYLMLEFAPRGELYKELQKHGRFDEQRSATFMEELADALHYCHERKVIHRDIKPENLLMGYKGELKIADFGWSVHAPSLRRRtMCGTLDYLPPEMIEGKTHDEKVDLWCAGVLCYEFLVGMPPFDSPSHTETHRRIVNVDLKFPPFLSDGSKDLISKLLRYHPPQRLPLKGVMEHPWVKANSRRVLPPVYQ 356
                                    96       106       116       126       136       146       156       166       176       186       196       206       216       226       236       246 |     256       266       276       286       296       306       316       326       336       346       356
                                                                                                                                                                                           248-TPO                                                                                                        

Chain B from PDB  Type:PROTEIN  Length:273
 aligned with AUKBA_XENLA | Q6DE08 from UniProtKB/Swiss-Prot  Length:361

    Alignment length:278
                                    87        97       107       117       127       137       147       157       167       177       187       197       207       217       227       237       247       257       267       277       287       297       307       317       327       337       347        
          AUKBA_XENLA    78 TALAEMPKRKFTIDDFDIGRPLGKGKFGNVYLAREKQNKFIMALKVLFKSQLEKEGVEHQLRREIEIQSHLRHPNILRMYNYFHDRKRIYLMLEFAPRGELYKELQKHGRFDEQRSATFMEELADALHYCHERKVIHRDIKPENLLMGYKGELKIADFGWSVHAPSLRRRTMCGTLDYLPPEMIEGKTHDEKVDLWCAGVLCYEFLVGMPPFDSPSHTETHRRIVNVDLKFPPFLSDGSKDLISKLLRYHPPQRLPLKGVMEHPWVKANSRRVLPPVY 355
               SCOP domains d3ztxb_ B: automated m     atches                                                                                                                                                                                                                                                      SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...........hhh.eeeeee.-----..eeeeee....eeeeeeeeehhhhhh..hhhhhhhhhhhhh.........eeeeee...eeeeee.....eehhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhh.ee....hhh.eee.....eee......ee...........hhhhhhhhhhh......hhhhhhhhhhhhhhhhh.......hhhhhhhhhhh.........hhhhhhhhhhhh..hhhhh.hhhhhhhhhhhhhhh........ Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------PROTEIN_KINASE_ATP      -----------------------------------------------------------------------------------------PROTEIN_KINAS----------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3ztx B  78 TALAEMPKRKFTIDDFDIGRPL-----GNVYLAREKQNKFIMALKVLFKSQLEKEGVEHQLRREIEIQSHLRHPNILRMYNYFHDRKRIYLMLEFAPRGELYKELQKHGRFDEQRSATFMEELADALHYCHERKVIHRDIKPENLLMGYKGELKIADFGWSVHAPSLRRRtMCGTLDYLPPEMIEGKTHDEKVDLWCAGVLCYEFLVGMPPFDSPSHTETHRRIVNVDLKFPPFLSDGSKDLISKLLRYHPPQRLPLKGVMEHPWVKANSRRVLPPVY 355
                                    87        97 |     107       117       127       137       147       157       167       177       187       197       207       217       227       237       247|      257       267       277       287       297       307       317       327       337       347        
                                                99   105                                                                                                                                            248-TPO                                                                                                       

Chain C from PDB  Type:PROTEIN  Length:40
 aligned with INCEA_XENLA | O13024 from UniProtKB/Swiss-Prot  Length:873

    Alignment length:40
                                   807       817       827       837
          INCEA_XENLA   798 IPAWASGNLLTQAIRQQYYKPIDVDRMYGTIDSPKLEELF 837
               SCOP domains ---------------------------------------- SCOP domains
               CATH domains ---------------------------------------- CATH domains
               Pfam domains ---------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhh..hhhhhh......hhhhhh Sec.struct. author
                 SAPs(SNPs) ---------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------- PROSITE
                 Transcript ---------------------------------------- Transcript
                 3ztx C 798 IPAWASGNLLTQAIRQQYYKPIDVDRMYGTIDSPKLEELF 837
                                   807       817       827       837

Chain D from PDB  Type:PROTEIN  Length:43
 aligned with INCEA_XENLA | O13024 from UniProtKB/Swiss-Prot  Length:873

    Alignment length:43
                                   807       817       827       837   
          INCEA_XENLA   798 IPAWASGNLLTQAIRQQYYKPIDVDRMYGTIDSPKLEELFNKS 840
               SCOP domains ------------------------------------------- SCOP domains
               CATH domains ------------------------------------------- CATH domains
               Pfam domains ------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhh..hhhhhh......hhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------- PROSITE
                 Transcript ------------------------------------------- Transcript
                 3ztx D 798 IPAWASGNLLTQAIRQQYYKPIDVDRMYGTIDSPKLEELFNKS 840
                                   807       817       827       837   

   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 Unit

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3ZTX)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3ZTX)

(-) Gene Ontology  (43, 53)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (AUKBA_XENLA | Q6DE08)
molecular function
    GO:0005524    ATP binding    Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
    GO:0035175    histone kinase activity (H3-S10 specific)    Catalysis of the transfer of a phosphate group to the serine-10 residue of the N-terminal tail of histone H3.
    GO:0035174    histone serine kinase activity    Catalysis of the transfer of a phosphate group to a serine residue of a histone. Histones are any of a group of water-soluble proteins found in association with the DNA of eukaroytic chromosomes.
    GO:0016301    kinase activity    Catalysis of the transfer of a phosphate group, usually from ATP, to a substrate molecule.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0000166    nucleotide binding    Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
    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:0004672    protein kinase activity    Catalysis of the phosphorylation of an amino acid residue in a protein, usually according to the reaction: a protein + ATP = a phosphoprotein + ADP.
    GO:0004674    protein serine/threonine kinase activity    Catalysis of the reactions: ATP + protein serine = ADP + protein serine phosphate, and ATP + protein threonine = ADP + protein threonine phosphate.
    GO:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
    GO:0009838    abscission    The controlled shedding of a body part.
    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:0051301    cell division    The process resulting in division and partitioning of components of a cell to form more cells; may or may not be accompanied by the physical separation of a cell into distinct, individually membrane-bounded daughter cells.
    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:0007059    chromosome segregation    The process in which genetic material, in the form of chromosomes, is organized into specific structures and then physically separated and apportioned to two or more sets. In eukaryotes, chromosome segregation begins with the condensation of chromosomes, includes chromosome separation, and ends when chromosomes have completed movement to the spindle poles.
    GO:0036089    cleavage furrow formation    Generation of the cleavage furrow, a shallow groove in the cell surface near the old metaphase plate that marks the site of cytokinesis. This process includes the recruitment and localized activation of signals such as RhoA at the site of the future furrow to ensure that furrowing initiates at the correct site in the cell.
    GO:0043987    histone H3-S10 phosphorylation    The modification of histone H3 by the addition of an phosphate group to a serine residue at position 10 of the histone.
    GO:0043988    histone H3-S28 phosphorylation    The modification of histone H3 by the addition of an phosphate group to a serine residue at position 28 of the histone.
    GO:0051256    mitotic spindle midzone assembly    The cell cycle process in which the aggregation, arrangement and bonding together of a set of components forms the spindle midzone.
    GO:0002903    negative regulation of B cell apoptotic process    Any process that stops, prevents, or reduces the frequency, rate, or extent of B cell apoptotic process.
    GO:0032466    negative regulation of cytokinesis    Any process that stops, prevents, or reduces the frequency, rate or extent of the division of the cytoplasm of a cell, and its separation into two daughter cells.
    GO:0000122    negative regulation of transcription from RNA polymerase II promoter    Any process that stops, prevents, or reduces the frequency, rate or extent of transcription from an RNA polymerase II promoter.
    GO:0016310    phosphorylation    The process of introducing a phosphate group into a molecule, usually with the formation of a phosphoric ester, a phosphoric anhydride or a phosphoric amide.
    GO:0032467    positive regulation of cytokinesis    Any process that activates or increases the frequency, rate or extent of the division of the cytoplasm of a cell, and its separation into two daughter cells.
    GO:0034501    protein localization to kinetochore    Any process in which a protein is transported to, or maintained at, the kinetochore.
    GO:0006468    protein phosphorylation    The process of introducing a phosphate group on to a protein.
    GO:0051225    spindle assembly    The aggregation, arrangement and bonding together of a set of components to form the spindle, the array of microtubules and associated molecules that serves to move duplicated chromosomes apart.
    GO:0031577    spindle checkpoint    A cell cycle checkpoint that originates from the mitotic or meiotic spindle.
cellular component
    GO:0000785    chromatin    The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome.
    GO:0005694    chromosome    A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
    GO:0032133    chromosome passenger complex    A eukaryotically conserved protein complex that localizes to kinetochores in early mitosis, the spindle mid-zone in anaphase B and to the telophase midbody. It has been proposed that the passenger complex coordinates various events based on its location to different structures during the course of mitosis. Complex members include the BIR-domain-containing protein Survivin, Aurora kinase, INCENP and Borealin.
    GO:0000775    chromosome, centromeric region    The region of a chromosome that includes the centromeric DNA and associated proteins. In monocentric chromosomes, this region corresponds to a single area of the chromosome, whereas in holocentric chromosomes, it is evenly distributed along the chromosome.
    GO:0030496    midbody    A thin cytoplasmic bridge formed between daughter cells at the end of cytokinesis. The midbody forms where the contractile ring constricts, and may persist for some time before finally breaking to complete cytokinesis.
    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.

Chain C,D   (INCEA_XENLA | O13024)
molecular function
    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: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: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:0051301    cell division    The process resulting in division and partitioning of components of a cell to form more cells; may or may not be accompanied by the physical separation of a cell into distinct, individually membrane-bounded daughter cells.
    GO:0007059    chromosome segregation    The process in which genetic material, in the form of chromosomes, is organized into specific structures and then physically separated and apportioned to two or more sets. In eukaryotes, chromosome segregation begins with the condensation of chromosomes, includes chromosome separation, and ends when chromosomes have completed movement to the spindle poles.
    GO:0000910    cytokinesis    The division of the cytoplasm and the plasma membrane of a cell and its partitioning into two daughter cells.
    GO:0051225    spindle assembly    The aggregation, arrangement and bonding together of a set of components to form the spindle, the array of microtubules and associated molecules that serves to move duplicated chromosomes apart.
cellular component
    GO:0005694    chromosome    A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
    GO:0032133    chromosome passenger complex    A eukaryotically conserved protein complex that localizes to kinetochores in early mitosis, the spindle mid-zone in anaphase B and to the telophase midbody. It has been proposed that the passenger complex coordinates various events based on its location to different structures during the course of mitosis. Complex members include the BIR-domain-containing protein Survivin, Aurora kinase, INCENP and Borealin.
    GO:0000775    chromosome, centromeric region    The region of a chromosome that includes the centromeric DNA and associated proteins. In monocentric chromosomes, this region corresponds to a single area of the chromosome, whereas in holocentric chromosomes, it is evenly distributed along the chromosome.
    GO:0000777    condensed chromosome kinetochore    A multisubunit complex that is located at the centromeric region of a condensed chromosome and provides an attachment point for the spindle microtubules.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    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:0000776    kinetochore    A multisubunit complex that is located at the centromeric region of DNA and provides an attachment point for the spindle microtubules.
    GO:0005874    microtubule    Any of the long, generally straight, hollow tubes of internal diameter 12-15 nm and external diameter 24 nm found in a wide variety of eukaryotic cells; each consists (usually) of 13 protofilaments of polymeric tubulin, staggered in such a manner that the tubulin monomers are arranged in a helical pattern on the microtubular surface, and with the alpha/beta axes of the tubulin subunits parallel to the long axis of the tubule; exist in equilibrium with pool of tubulin monomers and can be rapidly assembled or disassembled in response to physiological stimuli; concerned with force generation, e.g. in the spindle.
    GO:0030496    midbody    A thin cytoplasmic bridge formed between daughter cells at the end of cytokinesis. The midbody forms where the contractile ring constricts, and may persist for some time before finally breaking to complete cytokinesis.
    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:0005721    pericentric heterochromatin    Heterochromatin that is located adjacent to the CENP-A rich centromere 'central core' and characterized by the modified histone H3K9me3.
    GO:0005819    spindle    The array of microtubules and associated molecules that forms between opposite poles of a eukaryotic cell during mitosis or meiosis and serves to move the duplicated chromosomes apart.

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 Related Entries

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

UniProtKB/Swiss-Prot
        AUKBA_XENLA | Q6DE082bfx 2bfy 2vgo 2vgp 2vrx 4b8l 4b8m 4c2v 4c2w 5eyk 5k3y
        INCEA_XENLA | O130242bfx 2bfy 2vgo 2vgp 2vrx 4b8l 4b8m 4c2v 4c2w 5eyk 5k3y

(-) Related Entries Specified in the PDB File

2bfx MECHANISM OF AURORA-B ACTIVATION BY INCENP AND INHIBITION BY HESPERADIN.
2bfy COMPLEX OF AURORA-B WITH INCENP AND HESPERIDIN.
2vgo CRYSTAL STRUCTURE OF AURORA B KINASE IN COMPLEX WITH REVERSINE INHIBITOR
2vgp CRYSTAL STRUCTURE OF AURORA B KINASE IN COMPLEX WITH A AMINOTHIAZOLE INHIBITOR
2vrx STRUCTURE OF AURORA B KINASE IN COMPLEX WITH ZM447439