| Hemoglobin is a tetramer (which contains 4 subunit proteins) called hemoglobin A, consisting of two alpha and two beta subunits non-covalently bound, each made of 141 and 146 amino acid residues, respectively. The subunits are structurally similar and about the same size. Each subunit has a molecular weight of ~17kD, for a total molecular weight of the tetramer of ~68kD. Source: Bovine erythrocytes Purity: Prepared from repeatedly washed, then lysed and dialyzed bovine red cells. Form: Supplied as a lyophilized powder. Quality Control: All products from animal sources are produced from starting materials from USDA approved suppliers. All glands, organs and tissue raw materials used for further processing originate from certified USDA inspected plants, where animals are given ante and post-mortem inspections and are deemed fit for human consumption. Storage and Stability: Keep desiccated. Lyophilized powder may be stored at 4C. Stable for 12 months after receipt at 4C. For maximum recovery of product, centrifuge the original vial and prior to removing the cap. Country of Origin: All manufacturing takes place in the USA in USDA approved facilities. All animals are inspected ante- and post-mortem and USDA certified as fit for human consumption. |
