Iron-Regulated Surface Determinant Protein A, Recombinant, Staphylococcus Aureus, aa47-316, His-Tag, Myc-Tag (isdA)

Product Overview

• Article Name: Iron-Regulated Surface Determinant Protein A, Recombinant, Staphylococcus Aureus, aa47-316, His-Tag, Myc-Tag (isdA)
• Biozol Catalog Number: USB-517975
• Supplier Catalog Number: 517975
• Alternative Catalog Number: USB-517975-20,USB-517975-100
• Manufacturer: US Biological
• Category: Molekularbiologie

Product Description

Transfers its hemin to hemin-free IsdC (apo-IsdC) directly probably through the activated holo-IsdA-apo-IsdC complex and driven by the higher affinity of apo-IsdC for the cofactor. The reaction is reversible. Binds transferrin, lactoferrin, heme, hemoglobin, hemin, fetuin, asialofetuin and protein A. Also binds fibronectin and chains B-beta and gamma of fibrinogen. Could play a role in the removal of heme from hemoglobin. The IsdA-mediated iron-acquisition system from transferrin could play only an ancillary role in the iron uptake whereas the siderophore-mediated iron-acquisition system from transferrin seems to play an essential or dominant role. May function as a reservoir for heme. Involved in adherence of S.aureus to human desquamated nasal epithelial cells and is required for nasal colonization. Protects S.aureus against the bactericidal protease activity of apolactoferrin in vitro and confers resistance to bovine lactoferricin. Also IsdA and/or IsdB promote resistance to hydrogen peroxide and killing by neutrophils. Source: Recombinant protein corresponding to aa47-316 of Staphylococcus Aureus Iron-Regulated Surface Determinant Protein A, fused to 10xHis-Tag at N-terminal and Myc-Tag at C-terminal, expressed in E. coli. Molecular Weight: ~35.1kD Amino Acid Sequence: ATEATNATNNQSTQVSQATSQPINFQVQKDGSSEKSHMDDYMQHPGKVIKQNNKYYFQTVLNNASFWKEYKFYNANNQELATTVVNDNKKADTRTINVAVEPGYKSLTTKVHIVVPQINYNHRYTTHLEFEKAIPTLADAAKPNNVKPVQPKPAQPKTPTEQTKPVQPKVEKVKPTVTTTSKVEDNHSTKVVSTDTTKDQTKTQTAHTVKTAQTAQEQNKVQTPVKDVATAKSESNNQAVSDNKSQQTNKVTKHNETPKQASKAKELPKT Storage and Stability: Lyophilized and reconstituted products are stable for 6 months after receipt at -20C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

Product Properties

• Molecular Weight: 35.1
• UniProt: Q6GA85
• Purity: 85% (SDS-PAGE)
• Form: Supplied as a lyophilized powder from 20mM Tris-HCl, 0.5M sodium chloride, pH 8.0, 6% trehalose. Reconstitute with sterile ddH2O to a concentration of 0.1-1mg/ml.