- PDB-2pk2: Cyclin box structure of the P-TEFb subunit Cyclin T1 derived from... -
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Basic information
Entry
Database: PDB / ID: 2pk2
Title
Cyclin box structure of the P-TEFb subunit Cyclin T1 derived from a fusion complex with EIAV Tat
Components
Cyclin-T1, Protein Tat
Keywords
CELL CYCLE / CYCLIN T1 / TAT / TAR / TWINNING / TRANSCRIPTION REGULATION P-TEFb
Function / homology
Function and homology information
P-TEFb complex / Interactions of Tat with host cellular proteins / 7SK snRNA binding / positive regulation of viral transcription / cyclin/CDK positive transcription elongation factor complex / host cell nucleolus / cyclin-dependent protein serine/threonine kinase activator activity / positive regulation by host of viral transcription / RNA polymerase binding / positive regulation of DNA-templated transcription, elongation ...P-TEFb complex / Interactions of Tat with host cellular proteins / 7SK snRNA binding / positive regulation of viral transcription / cyclin/CDK positive transcription elongation factor complex / host cell nucleolus / cyclin-dependent protein serine/threonine kinase activator activity / positive regulation by host of viral transcription / RNA polymerase binding / positive regulation of DNA-templated transcription, elongation / regulation of cyclin-dependent protein serine/threonine kinase activity / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / RNA polymerase II transcribes snRNA genes / RNA-binding transcription regulator activity / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / Formation of HIV elongation complex in the absence of HIV Tat / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / RNA Polymerase II Pre-transcription Events / viral process / molecular condensate scaffold activity / TP53 Regulates Transcription of DNA Repair Genes / positive regulation of transcription elongation by RNA polymerase II / SMAD2/SMAD3:SMAD4 heterotrimer regulates transcription / DNA-binding transcription factor binding / Estrogen-dependent gene expression / transcription by RNA polymerase II / transcription cis-regulatory region binding / response to xenobiotic stimulus / cell cycle / cell division / chromatin binding / regulation of transcription by RNA polymerase II / protein kinase binding / positive regulation of transcription by RNA polymerase II / DNA binding / RNA binding / nucleoplasm / nucleus / cytosol Similarity search - Function
BIOMOLECULE: 1 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT WHICH CONSISTS OF 4 CHAIN(S) ...BIOMOLECULE: 1 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT WHICH CONSISTS OF 4 CHAIN(S). THE BIOLOGICAL ASSEMBLY IS A TETRAMER, GENERATED FROM TWO DIMERS IN THE ASYMMETRIC UNIT BY TWIN OPERATIONS:1/3 2/3 2/3, -1/3 1/3 -2/3, -4/3 -2/3 1/3, 4. SEE REMARK 350 FOR INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S).
Remark 999
SEQUENCE Authors state the nucleotide sequence is GenBank entry AF048730 (human Cyclin T1), which ...SEQUENCE Authors state the nucleotide sequence is GenBank entry AF048730 (human Cyclin T1), which refers to the GenPept entry AAC39664. Residue 77 is Gln in UNP entry O60563, but is Arg in AF048730. Authors state the electron density map accommodates Arg side chain very well.
The biological assembly is a tetramer, generated from two dimers in the asymmetric unit by twin operations:1/3 2/3 2/3, -1/3 1/3 -2/3, -4/3 -2/3 1/3, 4
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Components
#1: Protein
Cyclin-T1, ProteinTat / CycT1 / Cyclin-T / Transactivating regulatory protein / eQUINE Tat / E-Tat
Mass: 40341.637 Da / Num. of mol.: 4 Fragment: fusion protein of Cyclin T1 residues 1-281 and Protein EIAV Tat residues 19-75 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human), (gene. exp.) Equine infectious anemia virus Genus: Homo, Lentivirus / Species: , / Strain: , / Plasmid: pGEX-4T1 / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: O60563, UniProt: P32544
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