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(-) Description

Title :  CRYSTAL STRUCTURE OF HUMAN CYCLIN T2 AT 1.8 A RESOLUTION (CASP TARGET)
 
Authors :  J. E. Debreczeni, A. N. Bullock, O. Fedorov, P. Savitsky, G. Berridge, S A. C. W. Pike, A. Turnbull, E. Ugochukwu, E. Papagrigoriou, F. Gorrec, M. Sundstrom, A. Edwards, C. Arrowsmith, J. Weigelt, F. Von Delft, S.
Date :  21 Jun 06  (Deposition) - 19 Jul 06  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.80
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Transcription Regulation, Cell Division, Phosphorylation, Nuclear Protein, Cyclin, Cell Cycle, Transcription (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  S. Baumli, G. Lolli, E. D. Lowe, S. Troiani, L. Rusconi, A. N. Bullock, J. E. Debreczeni, S. Knapp, L. N. Johnson
The Structure Of P-Tefb (Cdk9/Cyclin T1), Its Complex With Flavopiridol And Regulation By Phosphorylation.
Embo J. V. 27 1907 2008
PubMed-ID: 18566585  |  Reference-DOI: 10.1038/EMBOJ.2008.121

(-) Compounds

Molecule 1 - CYCLIN-T2
    ChainsA, B
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System Cell LineBL21(DE3)R3
    Expression System Taxid562
    Expression System VectorPNIC28-BSA4
    FragmentRESIDUES 7-263
    MutationYES
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymHUMAN CYCLIN T2, CYCT2

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (1x)A 
Biological Unit 2 (1x) B

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 6)

Asymmetric Unit (1, 6)
No.NameCountTypeFull Name
1EDO6Ligand/Ion1,2-ETHANEDIOL
Biological Unit 1 (1, 4)
No.NameCountTypeFull Name
1EDO4Ligand/Ion1,2-ETHANEDIOL
Biological Unit 2 (1, 2)
No.NameCountTypeFull Name
1EDO2Ligand/Ion1,2-ETHANEDIOL

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREHIS A:201 , CYS A:204 , TRP A:209 , ILE A:211 , TRP A:220 , HOH A:2155BINDING SITE FOR RESIDUE EDO A1263
2AC2SOFTWAREARG A:67 , GLU A:150 , CYS A:187 , PRO A:192 , HOH A:2001 , HOH A:2103 , HOH A:2156BINDING SITE FOR RESIDUE EDO A1264
3AC3SOFTWAREPHE A:74 , THR A:75 , LYS A:76 , ASN A:78BINDING SITE FOR RESIDUE EDO A1265
4AC4SOFTWARELYS A:32 , CYS A:36 , PHE A:74 , THR A:75BINDING SITE FOR RESIDUE EDO A1266
5AC5SOFTWAREHIS B:201 , CYS B:204 , TRP B:209 , ILE B:211 , TRP B:220 , HOH B:2171BINDING SITE FOR RESIDUE EDO B1264
6AC6SOFTWARECYS B:36 , THR B:75BINDING SITE FOR RESIDUE EDO B1265

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (9, 18)

Asymmetric Unit (9, 18)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1dENST000002641571dENSE00001132542chr2:135676395-135676582188CCNT2_HUMAN1-53532A:7-53
B:9-53
47
45
1.2aENST000002641572aENSE00000827071chr2:135677380-13567746182CCNT2_HUMAN53-80282A:53-80
B:53-80
28
28
1.3ENST000002641573ENSE00001802057chr2:135694411-135694539129CCNT2_HUMAN81-123432A:81-123
B:81-123
43
43
1.4ENST000002641574ENSE00001792175chr2:135696572-13569663261CCNT2_HUMAN124-144212A:124-144
B:124-144
21
21
1.5aENST000002641575aENSE00000776509chr2:135700182-13570024463CCNT2_HUMAN144-165222A:144-165
B:144-165
22
22
1.7aENST000002641577aENSE00001596018chr2:135703671-13570371646CCNT2_HUMAN165-180162A:165-180
B:165-180
16
16
1.8bENST000002641578bENSE00001702605chr2:135705306-135705469164CCNT2_HUMAN180-235562A:180-235
B:180-235
56
56
1.9aENST000002641579aENSE00001792349chr2:135710211-13571028171CCNT2_HUMAN235-258242A:235-258
B:235-258
24
24
1.10eENST0000026415710eENSE00001386482chr2:135710800-1357169126113CCNT2_HUMAN259-7304722A:259-262
B:259-263
4
5

(-) 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:256
 aligned with CCNT2_HUMAN | O60583 from UniProtKB/Swiss-Prot  Length:730

    Alignment length:256
                                    16        26        36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236       246       256      
          CCNT2_HUMAN     7 ASSRWFFTREQLENTPSRRCGVEADKELSCRQQAANLIQEMGQRLNVSQLTINTAIVYMHRFYMHHSFTKFNKNIISSTALFLAAKVEEQARKLEHVIKVAHACLHPLEPLLDTKCDAYLQQTQELVILETIMLQTLGFEITIEHPHTDVVKCTQLVRASKDLAQTSYFMATNSLHLTTFCLQYKPTVIACVCIHLACKWSNWEIPVSTDGKHWWEYVDPTVTLELLDELTHEFLQILEKTPNRLKKIRNWRANQA 262
               SCOP domains d2ivxa1 A:7-149 Cyclin-T2                                                                                                                      d2ivxa2 A:150-262 Cyclin-T2                                                                                       SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhh.hhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhh........hhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhh.........hhhhhhhhhhhhhhhhhhhhhh.......hhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhh..........hhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.1d  PDB: A:7-53 UniProt: 1-53           ---------------------------Exon 1.3  PDB: A:81-123 UniProt: 81-123    Exon 1.4             --------------------Exon 1.7a       ------------------------------------------------------Exon 1.9a  PDB: A:235-251.10 Transcript 1 (1)
           Transcript 1 (2) ----------------------------------------------Exon 1.2a  PDB: A:53-80     ---------------------------------------------------------------Exon 1.5a             --------------Exon 1.8b  PDB: A:180-235 UniProt: 180-235              --------------------------- Transcript 1 (2)
                 2ivx A   7 ASSRWFFTREQLENTPSRRCGVEADKELSCRQQAANLIQEMGQRLNVSQLTINTAIVYMHRFYMHHSFTKFNKNIISSTALFLAAKVEEQARKLEHVIKVAHACLHPLEPLLDTKCDAYLQQTRELVILETIMLQTLGFEITIEHPHTDVVKCTQLVRASKDLAQTSYFMATNSLHLTTFCLQYKPTVIACVCIHLACKWSNWEIPVSTDGKHWWEYVDPTVTLELLDELTHEFLQILEKTPNRLKKIRNWRANQA 262
                                    16        26        36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236       246       256      

Chain B from PDB  Type:PROTEIN  Length:255
 aligned with CCNT2_HUMAN | O60583 from UniProtKB/Swiss-Prot  Length:730

    Alignment length:255
                                    18        28        38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258     
          CCNT2_HUMAN     9 SRWFFTREQLENTPSRRCGVEADKELSCRQQAANLIQEMGQRLNVSQLTINTAIVYMHRFYMHHSFTKFNKNIISSTALFLAAKVEEQARKLEHVIKVAHACLHPLEPLLDTKCDAYLQQTQELVILETIMLQTLGFEITIEHPHTDVVKCTQLVRASKDLAQTSYFMATNSLHLTTFCLQYKPTVIACVCIHLACKWSNWEIPVSTDGKHWWEYVDPTVTLELLDELTHEFLQILEKTPNRLKKIRNWRANQAA 263
               SCOP domains d2ivxb1 B:9-149 Cyclin-T2                                                                                                                    d2ivxb2 B:150-263 Cyclin-T2                                                                                        SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....hhhhhhh..hhhhh.hhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhh........hhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhh.........hhhhhhhhhhhhhhhhhhhhhh.......hhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhh..........hhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.1d  PDB: B:9-53 UniProt: 1-53         ---------------------------Exon 1.3  PDB: B:81-123 UniProt: 81-123    Exon 1.4             --------------------Exon 1.7a       ------------------------------------------------------Exon 1.9a  PDB: B:235-251.10e Transcript 1 (1)
           Transcript 1 (2) --------------------------------------------Exon 1.2a  PDB: B:53-80     ---------------------------------------------------------------Exon 1.5a             --------------Exon 1.8b  PDB: B:180-235 UniProt: 180-235              ---------------------------- Transcript 1 (2)
                 2ivx B   9 SRWFFTREQLENTPSRRCGVEADKELSCRQQAANLIQEMGQRLNVSQLTINTAIVYMHRFYMHHSFTKFNKNIISSTALFLAAKVEEQARKLEHVIKVAHACLHPLEPLLDTKCDAYLQQTRELVILETIMLQTLGFEITIEHPHTDVVKCTQLVRASKDLAQTSYFMATNSLHLTTFCLQYKPTVIACVCIHLACKWSNWEIPVSTDGKHWWEYVDPTVTLELLDELTHEFLQILEKTPNRLKKIRNWRANQAA 263
                                    18        28        38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258     

   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, 4)

Asymmetric Unit

(-) CATH Domains  (0, 0)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2IVX)

(-) Gene Ontology  (29, 29)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (CCNT2_HUMAN | O60583)
molecular function
    GO:0097322    7SK snRNA binding    Interacting selectively and non-covalently with a 7SK small nuclear RNA (7SK snRNA).
    GO:0070063    RNA polymerase binding    Interacting selectively and non-covalently with an RNA polymerase molecule or complex.
    GO:0003682    chromatin binding    Interacting selectively and non-covalently with chromatin, the network of fibers of DNA, protein, and sometimes RNA, that make up the chromosomes of the eukaryotic nucleus during interphase.
    GO:0016538    cyclin-dependent protein serine/threonine kinase regulator activity    Modulates the activity of a cyclin-dependent protein serine/threonine kinase, enzymes of the protein kinase family that are regulated through association with cyclins and other proteins.
    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.
    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:0001223    transcription coactivator binding    Interacting selectively and non-covalently with a transcription coactivator, any protein involved in positive regulation of transcription via protein-protein interactions with transcription factors and other proteins that positively regulate transcription. Transcription coactivators do not bind DNA directly, but rather mediate protein-protein interactions between activating transcription factors and the basal transcription machinery.
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:0019085    early viral transcription    The first phase of viral transcription that occurs after entry of the virus into the host cell, but prior to viral genome replication. It involves the transcription of genes for non-structural proteins, and for lytic viruses, the early gene products are involved in establishing control over the host cell.
    GO:0019086    late viral transcription    The transcription of the final group of viral genes of the viral life cycle, following middle transcription, or where middle transcription doesn't occur, following early transcription. Involves the transcription of genes encoding structural proteins.
    GO:0045737    positive regulation of cyclin-dependent protein serine/threonine kinase activity    Any process that activates or increases the frequency, rate or extent of CDK activity.
    GO:1901409    positive regulation of phosphorylation of RNA polymerase II C-terminal domain    Any process that activates or increases the frequency, rate or extent of phosphorylation of RNA polymerase II C-terminal domain.
    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:0006468    protein phosphorylation    The process of introducing a phosphate group on to a protein.
    GO:0000079    regulation of cyclin-dependent protein serine/threonine kinase activity    Any process that modulates the frequency, rate or extent of cyclin-dependent protein serine/threonine kinase activity.
    GO:0051147    regulation of muscle cell differentiation    Any process that modulates the frequency, rate or extent of muscle cell differentiation.
    GO:0006355    regulation of transcription, DNA-templated    Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
    GO:0042795    snRNA transcription from RNA polymerase II promoter    The synthesis of small nuclear RNA (snRNA) from a DNA template by RNA Polymerase II (Pol II), originating at a Pol II promoter.
    GO:0006368    transcription elongation from RNA polymerase II promoter    The extension of an RNA molecule after transcription initiation and promoter clearance at an RNA polymerase II promoter by the addition of ribonucleotides catalyzed by RNA polymerase II.
    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:0016032    viral process    A multi-organism process in which a virus is a participant. The other participant is the host. Includes infection of a host cell, replication of the viral genome, and assembly of progeny virus particles. In some cases the viral genetic material may integrate into the host genome and only subsequently, under particular circumstances, 'complete' its life cycle.
cellular component
    GO:0008024    cyclin/CDK positive transcription elongation factor complex    A transcription elongation factor complex that facilitates the transition from abortive to productive elongation by phosphorylating the CTD domain of the large subunit of DNA-directed RNA polymerase II, holoenzyme. Contains a cyclin and a cyclin-dependent protein kinase catalytic subunit.
    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.
    GO:0048471    perinuclear region of cytoplasm    Cytoplasm situated near, or occurring around, the nucleus.

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