Recombinant human CTDSP1 protein
Carboxy-terminal domain, RNA polymerase II, polypeptide A phosphatase 1, also known as CTDSP1, is a class 2C phosphatase with activity dependent on the conserved DxD motif. CTDSP1 preferentially catalyzes the dephosphorylation of 'Ser-5' within the tandem 7 residues repeats in the C-terminal domain (CTD) of the largest RNA polymerase II subunit POLR2A. Also it negatively regulates RNA polymerase II transcription, possibly by controlling the transition from initiation/capping to processive transcript elongation. Recombinant human CTDSP1 protein, fused to His-tag at N-terminus, was expressed in E. coli and purified by using conventional chromatography techniques.
Product Specifications
Product Name Alternative
Expression System
E.coli
Antigen Species
Human
Tag
His-Tag
Applications
SDS-PAGE
Concentration
1 mg/mL (determined by Bradford assay)
Purity
> 90% by SDS-PAGE
Molecular Weight
31.2 kDa (280aa) confirmed by MALDI-TOF
Additionnal Information
References & Citations
Maiello B., et al. (2001) Front Biosci. 6: 1358-1368.; ; Palancade B., et al. (2004) J Mol Biol. 335:415-424.
Storage Conditions
Can be stored at 2°C to 8°C for 1 week. For long term storage, aliquot and store at -20C to -80C. Avoid repeated freezing and thawing cycles.
Formulation
Liquid in. 20 mM Tris-HCl buffer (pH 8.0) containing 1mM DTT, 20% glycerol, 0.1M NaCl
Scientific Category
Signal Transduction
NCBI Accession Number
NP_872580
Uniprot Accession Number
Q9GZU7
Species
Human
AA Sequence
Frequently Asked Questions
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