Recombinant Human RNA polymerase II CTD repeat YSPTSPS Protein

Name: Recombinant Human RNA polymerase II CTD repeat YSPTSPS Protein
Brand: Beta LifeScience
SKU: BLA-7827P
Availability: InStock

Collections: Other recombinant proteins, Recombinant proteins

Our products are highly customizable to meet your specific needs. You can choose options such as endotoxin removal, liquid or lyophilized forms, preferred tags, and the desired functional sequence range for proteins. Submitting a written inquiry expedites the quoting process.

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Product Overview

Host Species	Human
Accession	P24928
Synonym	DNA directed RNA polymerase II A DNA-directed RNA polymerase II largest subunit RNA polymerase II 220 kd subunit DNA-directed RNA polymerase II subunit A DNA-directed RNA polymerase II subunit RPB1 DNA-directed RNA polymerase III largest subunit hRPB220 hsRPB1 POLR2 Polr2a POLRA Polymerase (RNA) II (DNA directed) polypeptide A Polymerase (RNA) II (DNA directed) polypeptide A 220kDa RNA polymerase II subunit B1 RNA-directed RNA polymerase II subunit RPB1 RPB1 RPB1_HUMAN RPBh1 RpIILS RPO2 RPOL2
Description	Recombinant Human RNA polymerase II CTD repeat YSPTSPS Protein was expressed in E.coli. It is a Protein fragment
Source	E.coli
Molecular Weight	42 kDa
Purity	>95% SDS-PAGE.
Endotoxin	< 1.0 EU per μg of the protein as determined by the LAL method
Bioactivity	1 unit equals 1 nanogram of purified protein. 20 units are sufficient for reconstituted transcription assay and 100 units are sufficient for a protein-protein interaction assay. Has been applied in in vitro transcription assays, splicing assays and protein-protein interactions assays.
Formulation	Liquid Solution
Stability	The recombinant protein samples are stable for up to 12 months at -80°C
Reconstitution	See related COA
Unit Definition	For Research Use Only
Storage Buffer	Shipped on dry ice. Upon delivery aliquot and store at -80°C. Avoid freeze / thaw cycle.

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.