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| Catalog No. | Product Name | Size | List Price (US$) | Quantity |
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Conditions of optimal TFIIB Protein performance should be determined experimentally by the investigator.
Price/availability/specifications subject to change without notice. Unless otherwise indicated, our catalog and customized products are for research use only and not intended for human or animal diagnostic or therapeutic use.
Phone: 1-617-401-8149
Fax: 1-617-606-5019
Email: message@sydlabs.com
Or leave a message with a formal purchase
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Introduction
Transcription Initiation Factor IIB (TFIIB) is an essential factor for transcription by RNA Polymerase II. TFIIB localizes to the nucleus where it forms a complex (the DAB complex) with transcription factor IID and IIA. TFIIB plays a role as a bridge between IID, which initially recognizes the promoter sequence, and RNA polymerase II. TFIIB is involved in the selection of transcription start site.
BP001708-C293: Recombinant Human Transcription Initiation Factor IIB (TFIIB) Protein
Source: E. coli-derived.
Recombinant Human Transcription Initiation Factor IIB (TFIIB) Protein is expressed with sequence (Met1-Leu316) of Human TFIIB fused with a GST tag at the N-terminus.
Purity: > 95% by SEC-HPLC and reducing SDS-PAGE.
Endotoxin: < 0.1 ng/ug (1 IEU/ug).
Formulation: Lyophilized from a 0.2 um filtered solution of 20 mM Tris-HCl, 100 mM NaCl, pH 8.0.
Reconstitution: Always centrifuge tubes before opening. Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100 ug/ml. Dissolve the lyophilized protein in 1X PBS. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
Shipping: The product is shipped with ice pack. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70°C as supplied.
1 month, 2 to 8°C under sterile conditions after reconstitution.
3 months, -20 to -70°C under sterile conditions after reconstitution.
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