Recombinant Human Cyclin-dependent kinase 12 (CDK12), partial

Code CSB-EP882147HUb0
Abbreviation Recombinant Human CDK12 protein, partial
MSDS
Size $256
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  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
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Product Details

Purity
Greater than 85% as determined by SDS-PAGE.
Activity
Not Test
Target Names
Uniprot No.
Research Area
Signal Transduction
Alternative Names
Cdc2-related kinase, arginine/serine-rich;Cell division cycle 2-related protein kinase 7;Cell division protein kinase 12
Species
Homo sapiens (Human)
Source
E.coli
Expression Region
727-1020aa
Target Protein Sequence
FDIIGIIGEGTYGQVYKAKDKDTGELVALKKVRLDNEKEGFPITAIREIKILRQLIHRSVVNMKEIVTDKQDALDFKKDKGAFYLVFEYMDHDLMGLLESGLVHFSEDHIKSFMKQLMEGLEYCHKKNFLHRDIKCSNILLNNSGQIKLADFGLARLYNSEESRPYTNKVITLWYRPPELLLGEERYTPAIDVWSCGCILGELFTKKPIFQANLELAQLELISRLCGSPCPAVWPDVIKLPYFNTMKPKKQYRRRLREEFSFIPSAALDLLDHMLTLDPSKRCTAEQTLQSDFL
Note: The complete sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
If the exact amino acid sequence of this recombinant protein is critical to your application, please explicitly request the full and complete sequence of this protein before ordering.
Mol. Weight
40.0 kDa
Protein Length
Partial
Tag Info
N-terminal 10xHis-tagged
Form
Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer
If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
Basically, we can dispatch the products out in 3-7 working days after receiving your orders. Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4℃ for up to one week.
Datasheet & COA
Please contact us to get it.

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Target Background

Function
Cyclin-dependent kinase that phosphorylates the C-terminal domain (CTD) of the large subunit of RNA polymerase II (POLR2A), thereby acting as a key regulator of transcription elongation. Regulates the expression of genes involved in DNA repair and is required for the maintenance of genomic stability. Preferentially phosphorylates 'Ser-5' in CTD repeats that are already phosphorylated at 'Ser-7', but can also phosphorylate 'Ser-2'. Required for RNA splicing, possibly by phosphorylating SRSF1/SF2. Involved in regulation of MAP kinase activity, possibly leading to affect the response to estrogen inhibitors.
Gene References into Functions
  1. Cyclin K expression positively correlates with cell proliferation; knockdown of cyclin K or its cognate kinase CDK12 prevents the assembly of prereplicative complex in the G1 cell cycle phase. PMID: 29760377
  2. CDK12 regulates prereplicative complex assembly to promote mammalian cell proliferation. PMID: 29760377
  3. CDK12 gene amplification can contribute to the pathogenesis of breast cancer. PMID: 28334900
  4. BRCA1 downregulation combined with CHK1 inhibition induced excessive amounts of DNA damage, resulting in an inability to complete the S-phase. Therefore, we suggest CHK1 inhibition as a strategy for targeting BRCA1- or CDK12-deficient tumors. PMID: 29025359
  5. In Ovarian Cancer patients CDK12 loss is consistently associated with a particular genomic instability pattern characterized by hundreds of tandem duplications PMID: 26787835
  6. Structures of CDK12/CycK complexes solved in the presence of AMP-PNP. PMID: 26597175
  7. Data show that most mutations prevent formation of the cyclin-dependent kinase 12 (Cdk12)/cyclin K (CycK) complex, rendering the kinase inactive. PMID: 25712099
  8. CDK12 affects RNA processing events in two distinct ways: Indirectly through generating factor-binding phospho-epitopes on the CTD of elongating RNAPII and directly through binding to specific factors PMID: 25429106
  9. CDK12 and CDK13 losses in HCT116 cells preferentially affect expression of DNA damage response. PMID: 25561469
  10. CDK12 plays an important role in cotranscriptional processing of c-FOS transcripts PMID: 25384976
  11. CDK12 has properties that should confirm interest in its use as a biomarker. PMID: 24240700
  12. many CDK12 mutations are an unrecognized cause of HR defects in ovarian cancers PMID: 24554720
  13. CDK12 interacts with cyclin K and is required to maintain embryonnic stem cell self-renewal. PMID: 22547058
  14. Cyclin K1 is the primary cyclin partner for CDK12/CrkRS and it is required for activation of CDK12/CrkRS to phosphorylate the C-terminal domain of RNA Pol II. PMID: 22988298
  15. through regulation of expression of DNA damage response genes, CycK/Cdk12 protects cells from genomic instability PMID: 22012619
  16. Data show that siRNA knockdown of hCDK12 in HeLa cells results in alterations in the CTD phosphorylation state. PMID: 20952539
  17. CRK7 modifies MAP kinases regulation and resistance to estrogen signaling inhibitors in breast cancers. PMID: 19651820

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Involvement in disease
Chromosomal aberrations involving CDK12 may be a cause gastric cancer. Deletions within 17q12 region producing fusion transcripts with ERBB2, leading to CDK12-ERBB2 fusion leading to trunctated CDK12 protein not in-frame with ERBB2.
Subcellular Location
Nucleus. Nucleus speckle. Note=Colocalized with nuclear speckles throughout interphase.
Protein Families
Protein kinase superfamily, CMGC Ser/Thr protein kinase family, CDC2/CDKX subfamily
Tissue Specificity
Ubiquitously expressed.
Database Links

HGNC: 24224

OMIM: 615514

KEGG: hsa:51755

STRING: 9606.ENSP00000398880

UniGene: Hs.345028

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