HP-NAP

Data sheet

Formulation

HP-NAP was filtered (0.4 um) and lyophilized in 20mM Tris buffer and 50mM NaCl, pH 7.5.

Solubility

It is recommended to add 200ul of deionized water to prepare a working stock solution of approximately 0.5mg/ml and let the lyophilized pellet dissolve completely. HP-NAP is not sterile! Please filter the product by an appropriate sterile filter before us

Purity

Greater than 95.0% as determined by SDS-PAGE.

Description

HP-NAP Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain (Met1-Ala144) containing 154 amino acids including a 10 aa His tag at N-terminus. The total calculated molecular mass is 18.2kDa.

Protein Background

HP-NAP protects DNA from oxidative damage by sequestering intracellular Fe2+ ion and storing it in the form of Fe3+ oxyhydroxide mineral. One hydrogen peroxide oxidizes two Fe2+ ions, thus preventing hydroxyl radical production by the Fenton reaction. HP-

Expression host

Escherichia Coli.

Synonyms

DNA protection during starvation protein, Bacterioferritin, HP-NAP, Neutrophil-activating protein A, NAP A, dps, napA.

Reagent Appearance

Filtered White lyophilized (freeze-dried) powder.

Stability

Store lyophilized protein at -20°C. Aliquot the product after reconstitution to avoid repeated freezing/thawing cycles. Reconstituted protein can be stored at 4°C for a limited period of time; it does not show any change after two weeks at 4°C.

Amino acid sequence

MKHHHHHHASMKTFEILKHL QADAIVLFMK VHNFHWNVKG TDFFNVHKAT EEIYEEFADM FDDLAERIVQ LGHHPLVTLS EAIKLTRVKE ETKTSFHSKD IFKEILEDYK YLEKEFKELS NTAEKEGDKV TVTYADDQLA KLQKSIWMLQ AHLA.