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(-) Description

Title :  CYCLIN H, A POSITIVE REGULATORY SUBUNIT OF CDK ACTIVATING KINASE
 
Authors :  K. K. Kim, H. M. Chamberin, D. O. Morgan, S. -H. Kim
Date :  08 Aug 96  (Deposition) - 27 Jan 97  (Release) - 16 Nov 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.60
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  Regulatory Protein, Cyclin, Cell Cycle, Cell Division, Nuclear Protein, Alpha-Helical Structure (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  K. K. Kim, H. M. Chamberlin, D. O. Morgan, S. H. Kim
Three-Dimensional Structure Of Human Cyclin H, A Positive Regulator Of The Cdk-Activating Kinase.
Nat. Struct. Biol. V. 3 849 1996
PubMed-ID: 8836101  |  Reference-DOI: 10.1038/NSB1096-849
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - CYCLIN H
    Cell LineHELA CELL
    ChainsA
    EngineeredYES
    Expression SystemSPODOPTERA FRUGIPERDA
    Expression System CommonFALL ARMYWORM
    Expression System PlasmidBACULOVIRUS
    Expression System Taxid7108
    Expression System VectorBACULOVIRUS VECTOR
    Expression System Vector TypeBACULOVIRUS
    MutationYES
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    Other DetailsA POSITIVE REGULATORY SUBUNIT OF CDK-ACTIVATING KINASE

 Structural Features

(-) Chains, Units

  1
Asymmetric Unit A
Biological Unit 1 (2x)A

Summary Information (see also Sequences/Alignments below)

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

(no "Ligand,Modified Residues,Ions" information available for 1KXU)

(-) Sites  (0, 0)

(no "Site" information available for 1KXU)

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (1, 1)

Asymmetric Unit
No.Residues
1Lys A:72 -Pro A:73

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (4, 4)

Asymmetric Unit (4, 4)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_013067R28LCCNH_HUMANPolymorphism2234942AR28L
2UniProtVAR_013068M54VCCNH_HUMANPolymorphism3093785AM54V
3UniProtVAR_013069K138RCCNH_HUMANPolymorphism2266691AK138R
4UniProtVAR_013070V270ACCNH_HUMANPolymorphism2230641AV270A

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (4, 8)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_013067R28LCCNH_HUMANPolymorphism2234942AR28L
2UniProtVAR_013068M54VCCNH_HUMANPolymorphism3093785AM54V
3UniProtVAR_013069K138RCCNH_HUMANPolymorphism2266691AK138R
4UniProtVAR_013070V270ACCNH_HUMANPolymorphism2230641AV270A

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (7, 7)

Asymmetric Unit (7, 7)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1aENST000002568971aENSE00000915485chr5:86708836-86708495342CCNH_HUMAN1-39391A:11-3929
1.2aENST000002568972aENSE00001754309chr5:86707163-86707041123CCNH_HUMAN40-80411A:40-8041
1.3aENST000002568973aENSE00000915483chr5:86705180-8670510774CCNH_HUMAN81-105251A:81-10525
1.4bENST000002568974bENSE00000915482chr5:86704003-86703793211CCNH_HUMAN105-175711A:105-17571
1.5aENST000002568975aENSE00000998762chr5:86700824-86700661164CCNH_HUMAN176-230551A:176-23055
1.6bENST000002568976bENSE00000998764chr5:86697589-8669751971CCNH_HUMAN230-254251A:230-25425
1.7ENST000002568977ENSE00000998763chr5:86695322-86695211112CCNH_HUMAN254-291381A:254-28633
1.8aENST000002568978aENSE00001082150chr5:86690921-8669086161CCNH_HUMAN291-311210--
1.8hENST000002568978hENSE00001082149chr5:86690301-86690082220CCNH_HUMAN312-323120--

(-) 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:276
 aligned with CCNH_HUMAN | P51946 from UniProtKB/Swiss-Prot  Length:323

    Alignment length:276
                                    20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280      
           CCNH_HUMAN    11 WTFSSEEQLARLRADANRKFRCKAVANGKVLPNDPVFLEPHEEMTLCKYYEKRLLEFCSVFKPAMPRSVVGTACMYFKRFYLNNSVMEYHPRIIMLTCAFLACKVDEFNVSSPQFVGNLRESPLGQEKALEQILEYELLLIQQLNFHLIVHNPYRPFEGFLIDLKTRYPILENPEILRKTADDFLNRIALTDAYLLYTPSQIALTAILSSASRAGITMESYLSESLMLKENRTCLSQLLDIMKSMRNLVKKYEPPRSEEVAVLKQKLERCHSAELA 286
               SCOP domains d1kxua1 A:11-161 Cyclin H (mcs2)                                                                                                                       d1kxua2 A:162-286 Cyclin H (mcs2)                                                                                             SCOP domains
               CATH domains 1kxuA01 A:11-160,A:262-286  [code=1.10.472.10, no name defined]                                                                                       1kxuA02 A:161-261  [code=1.10.472.10, no name defined]                                               1kxuA01                   CATH domains
               Pfam domains -------------------------------Cyclin_N-1kxuA01 A:42-159                                                                                             ------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....hhhhhhhhhhhhhhhhhhhh..............hhhhhhhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhh........hhhhhhhhhhhhhhh......hhhhhhh....hhhhhhhhhhhhhhhhhhhhh.........hhhhhhhhhhhhhhh.hhh.....hhhhhhhhhhhhh..hhhhh...hhhhhhhhhhhhhhh....................hhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhh...... Sec.struct. author
                 SAPs(SNPs) -----------------L-------------------------V-----------------------------------------------------------------------------------R-----------------------------------------------------------------------------------------------------------------------------------A---------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
           Transcript 1 (1) Exon 1.1a  PDB: A:11-39      Exon 1.2a  PDB: A:40-80 UniProt: 40-80   Exon 1.3a  PDB: A:81-105 ----------------------------------------------------------------------Exon 1.5a  PDB: A:176-230 UniProt: 176-230             -----------------------Exon 1.7  PDB: A:254-286          Transcript 1 (1)
           Transcript 1 (2) ----------------------------------------------------------------------------------------------Exon 1.4b  PDB: A:105-175 UniProt: 105-175                             ------------------------------------------------------Exon 1.6b  PDB: A:230-254-------------------------------- Transcript 1 (2)
                 1kxu A  11 WTFSSEEQLARLRADANRKFRCKAVANGKVLPNDPVFLEPHEEMTLCKYYEKRLLEFCSVFKPAMPRSVVGTACMYFKRFYLNNSVMEYHPRIIMLTCAFLACKVDEFNVSSPQFVGNLRESPLGQEKALEQILEYELLLIQQLNFHLIVHNPYRPFEGFLIDLKTRYPILENPEILRKTADDFLNRIALTDAYLLYTPSQIALTAILSSASRAGITMESYLSESLMLKENRTCLSQLLDIMKSMRNLVKKYEPPRSEEVAVLKQKLERCHSAELA 286
                                    20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280      

   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  (1, 2)

Asymmetric Unit

(-) Pfam Domains  (1, 1)

Asymmetric Unit
(-)
Clan: Cyclin (63)

(-) Gene Ontology  (29, 29)

Asymmetric Unit(hide GO term definitions)
Chain A   (CCNH_HUMAN | P51946)
molecular function
    GO:0008094    DNA-dependent ATPase activity    Catalysis of the reaction: ATP + H2O = ADP + phosphate; this reaction requires the presence of single- or double-stranded DNA, and it drives another reaction.
    GO:0008353    RNA polymerase II carboxy-terminal domain kinase activity    Catalysis of the reaction: ATP + (DNA-directed RNA polymerase II) = ADP + phospho-(DNA-directed RNA polymerase II); phosphorylation occurs on residues in the carboxy-terminal domain (CTD) repeats.
    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:0016301    kinase activity    Catalysis of the transfer of a phosphate group, usually from ATP, to a substrate molecule.
    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).
biological process
    GO:0006370    7-methylguanosine mRNA capping    Addition of the 7-methylguanosine cap to the 5' end of a nascent messenger RNA transcript.
    GO:0000082    G1/S transition of mitotic cell cycle    The mitotic cell cycle transition by which a cell in G1 commits to S phase. The process begins with the build up of G1 cyclin-dependent kinase (G1 CDK), resulting in the activation of transcription of G1 cyclins. The process ends with the positive feedback of the G1 cyclins on the G1 CDK which commits the cell to S phase, in which DNA replication is initiated.
    GO:0000086    G2/M transition of mitotic cell cycle    The mitotic cell cycle transition by which a cell in G2 commits to M phase. The process begins when the kinase activity of M cyclin/CDK complex reaches a threshold high enough for the cell cycle to proceed. This is accomplished by activating a positive feedback loop that results in the accumulation of unphosphorylated and active M cyclin/CDK complex.
    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:0006294    nucleotide-excision repair, preincision complex assembly    The aggregation, arrangement and bonding together of proteins on DNA to form the multiprotein complex involved in damage recognition, DNA helix unwinding, and endonucleolytic cleavage at the site of DNA damage. This assembly occurs before the phosphodiester backbone of the damaged strand is cleaved 3' and 5' of the site of DNA damage.
    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: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:0006355    regulation of transcription, DNA-templated    Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
    GO:0006363    termination of RNA polymerase I transcription    The process in which the synthesis of an RNA molecule by RNA polymerase I using a DNA template is completed. RNAP I termination requires binding of a terminator protein so specific sequences downstream of the transcription unit.
    GO:0006362    transcription elongation from RNA polymerase I promoter    The extension of an RNA molecule after transcription initiation and promoter clearance at an RNA polymerase I specific promoter by the addition of ribonucleotides catalyzed by RNA polymerase I.
    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:0006361    transcription initiation from RNA polymerase I promoter    Any process involved in the assembly of the RNA polymerase I preinitiation complex (PIC) at an RNA polymerase I promoter region of a DNA template, resulting in the subsequent synthesis of RNA from that promoter. The initiation phase includes PIC assembly and the formation of the first few bonds in the RNA chain, including abortive initiation, which occurs when the first few nucleotides are repeatedly synthesized and then released. Promoter clearance, or release, is the transition between the initiation and elongation phases of transcription.
    GO:0006367    transcription initiation from RNA polymerase II promoter    Any process involved in the assembly of the RNA polymerase II preinitiation complex (PIC) at an RNA polymerase II promoter region of a DNA template, resulting in the subsequent synthesis of RNA from that promoter. The initiation phase includes PIC assembly and the formation of the first few bonds in the RNA chain, including abortive initiation, which occurs when the first few nucleotides are repeatedly synthesized and then released. Promoter clearance, or release, is the transition between the initiation and elongation phases of transcription.
    GO:0006351    transcription, DNA-templated    The cellular synthesis of RNA on a template of DNA.
    GO:0006283    transcription-coupled nucleotide-excision repair    The nucleotide-excision repair process that carries out preferential repair of DNA lesions on the actively transcribed strand of the DNA duplex. In addition, the transcription-coupled nucleotide-excision repair pathway is required for the recognition and repair of a small subset of lesions that are not recognized by the global genome nucleotide excision repair pathway.
cellular component
    GO:0070985    TFIIK complex    A transcription factor complex that forms part of the holo TFIIH complex. In Saccharomyces/human, TFIIK contains Ccl1p/Cyclin H, Tfb3p/MAT1 and Kin2p/CDK7.
    GO:0019907    cyclin-dependent protein kinase activating kinase holoenzyme complex    A cyclin-dependent kinase activating kinase complex capable of activating cyclin-dependent kinases by threonine phosphorylation, thus regulating cell cycle progression. consists of a kinase, cyclin and optional assembly factors, in human CDK7, CCNH and MNAT1. CAK activity is itself regulated throughout the cell cycle by T-loop phosphorylation of its kinase component (CDK7 in human). Phosphorylation of serine residues during mitosis inactivates the enzyme. Also capable of CAK phosphorylating the carboxyl-terminal domain (CTD) of RNA polymerase II and other transcription activating proteins, as part of the general transcription factor TFIIH.
    GO:0005675    holo TFIIH complex    A complex that is capable of kinase activity directed towards the C-terminal Domain (CTD) of the largest subunit of RNA polymerase II and is essential for initiation at RNA polymerase II promoters in vitro. It is composed of the core TFIIH complex and the TFIIK complex.
    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)

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        CCNH_HUMAN | P519461jkw

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