Phone: 1-617-401-8149
Fax: 1-617-606-5019
Email: message@sydlabs.com
Or leave a message with a formal purchase
order (PO) Or credit card.
| Catalog No. | Product Name | Size | List Price (US$) | Quantity |
|---|
Conditions of optimal SEPX1 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
order (PO) Or credit card.
Introduction
Methionine sulfoxide reductase B1 (SEPX1 or MSRB1), is a selenoprotein that contains a selenocysteine (Sec) residue at its active site. The selenocysteine is encoded by the UGA codon that usually signals translation termination. SEPX1 is a member of the methionine sulfoxide reductase B (MsrB) family, and is expressed in an assortment of adult and fetal tissues. MSRs (Methionine sulfoxide reductases) catalyze the reduction of free and protein-bound methionine sulfoxides to corresponding methionines. The oxidation of methionine by ROS creates a diastereomeric mixture of methionine-S-sulfoxide (Met-S-SO) and methionine-R-sulfoxide (Met-R-SO). Two separate enzyme families evolved for reduction of these sulfoxides, with methionine-S-sulfoxide reductase (MsrA) being stereospecific for Met-S-SO and methionine-R-sulfoxide reductase (MsrB) for Met-R-SO.
BP002278-PRO-260: Recombinant Human Selenoprotein X 1 (SEPX1) Protein
Source: E. coli-derived.
Recombinant Human Selenoprotein X 1 (SEPX1) Protein fused with a 20 amino acid His tag at N-terminus is a single, non-glycosylated, polypeptide chain containing 136 amino acids (1-116 a.a.) and having a molecular mass of 14.8 kDa. In bacteria, the selenocystein (Sec/U) element is positioned directly following the UGA codon within the reading frame for the selenoprotein so we mutated Sec-95 to Cys. The SEPX1 is purified by proprietary chromatographic techniques.
Purity: > 90.0% as determined by SDS-PAGE.
Formulation: The SEPX1 solution (0.5 mg/ml) contains 20 mM Tris-HCl Buffer (pH 7.5), 1 mM DTT, 0.1 mM PMSF, 2 mM EDTA and 10% Glycerol.
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.
Copyright © 2009-2025 sydlabs.com. All rights reserved.
Use of this website means that you have read, understood, and accepted the Syd Labs Privacy Policy and Terms & Conditions.
Friend Link: Ushelf