Recombinant Human SV40 T-Antigen Protein (His Tag)

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.

Submit an inquiry today to inquire about all available size options and prices! Connect with us via the live chat in the bottom corner to receive immediate assistance.

Product Overview

Tag	His
Host Species	Simian Virus
Accession	AAG39214.1.
Background	The large T antigen (TAg) of Simian virus 40 acts as an initiator of DNA replication, participates in cellular transformation, and induces cell growth (1-4). A number of functional domains have been characterized including the N-terminal J domain, nuclear localization signal (NLS), internal helicase domain, Rb and topoisomerase I interacting domain, p53 and ATP binding domain (5,6). The p53-interacting domain is also essential for binding p300/CBP (7). Phosphorylation of TAg by several kinases may regulate its function both positively and negatively (8).
Description	Recombinant Human SV40 T-Antigen Protein was expressed in Baculovirus-insect cell. This protein is fused with a His tag and purified using our unique purification methods.
Source	Baculovirus-insect cell
AA Sequence	MDKVLNREES LQLMDLLGLE RSAWGNIPLM RKAYLKKCKE FHPDKGGDEE KMKKMNTLYK KMEDGVKYAH QPDFGGFWDA TEIPTYGTDE WEQWWNAFNE ENLFCSEEMP SSDDEATADS QHSTPPKKKR KVEDPKDFPS ELLSFLSHAV FSNRTLACFA IYTTKEKAAL LYKKIMEKYS VTFISRHNSY NHNILFFLTP HRHRVSAINN YAQKLCTFSF LICKGVNKEY LMYSALTRDP FSVIEESLPG GLKEHDFNPE EAEETKQVSW KLVTEYAMET KCDDVLLLLG MYLEFQYSFE MCLKCIKKEQ PSHYKYHEKH YANAAIFADS KNQKTICQQA VDTVLAKKRV DSLQLTREQM LTNRFNDLLD RMDIMFGSTG SADIEEWMAG VAWLHCLLPK MDSVVYDFLK CMVYNIPKKR YWLFKGPIDS GKTTLAAALL ELCGGKALNV NLPLDRLNFE LGVAIDQFLV VFEDVKGTGG ESRDLPSGQG INNLDNLRDY LDGSVKVNLE KKHLNKRTQI FPPGIVTMNE YSVPKTLQAR FVKQIDFRPK DYLKHCLERS EFLLEKRIIQ SGIALLLMLI WYRPVAEFAQ SIQSRIVEWK ERLDKEFSLS VYQKMKFNVA MGIGVLDWLR NSDDDDEDSQ ENADKNEDGG EKNMEDSGHE TGIDSQSQGS FQAPQSSQSV HDHNQPYHIC RGFTCFKKPP TPPPEPET
Molecular Weight	83.3 kDa.
Purity	>95% purity by SDS-PAGE
Endotoxin	<0.1 ng/µg (1 EU/µg) as determined by LAL test.
Formulation	Recombinant Human SV40 T-Antigen Protein is supplied in 20mM Tris-HCl pH7.9,100mM NaCl, 0.2mM EDTA, 1mM DTT and 20% glycerol.
Usage	For Research Use Only
Storage	Stored the protein at -70°C before use. Avoid repeated freeze thaw cycles.

FAQs

Please fill out the Online Inquiry form located on the product page. Key product information has been pre-populated. You may also email your questions and inquiry requests to sales1@betalifesci.com. We will do our best to get back to you within 4 business hours.

Feel free to use the Chat function to initiate a live chat. Our customer representative can provide you with a quote immediately.

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.