Neuroglobin Human E. coli Tagless

Introduction to the Molecule

Neuroglobin, 151 amino acid reside protein, mainly expressed in vertebrate brain and retina, is a recently identified member of the globin superfamily. Augmenting O(2) supply, neuroglobin promotes survival of neurons upon hypoxic injury, potentially limiting brain damage. Moreover, neuroglobin may be a novel oxidative stress-responsive sensor for signal transduction in the brain. Neuroglobin expression is increased by neuronal hypoxia in vitro and focal cerebral ischemia in vivo, and neuronal survival after hypoxia is reduced by inhibiting neuroglobin expression with an antisense oligodeoxynucle­otide and enhanced by neuroglobin overexpression

Research topic

Neural tissue damage markers

Description

Total 151 AA. MW: 17 kDa (calculated). 150 AA of recombinant human Neuroglobin and one extra AA, N-terminal methionin (highlighted).

Amino Acid Sequence

Source

E. coli

Purity

>95%

SDS-PAGE gel

12% SDS-PAGE separation of Human Neuroglobin 1. M.W. marker – 14, 21, 31, 45, 66, 97 kDa 2. reduced and heated sample, 5μg/lane 3. non-reduced and non-heated sample, 5μg/lane

Endotoxin

< 1.0 EU/ug

Formulation

Filtered (0,4 μm) and lyophilized in 0.5 mg/mL in 0.05 M phosphate buffer, 0.1 M NaCl, pH 7.2

Reconstitution

Add deionized water to prepare a working stock solution of approximately 0.5 mg/mL and let the lyophilized pellet dissolve completely. Product is not sterile! Please filter the product by an appropriate sterile filter before using it in the cell culture.

Storage, Stability/Shelf Life

Store lyophilized protein at –20°C. Lyophilized protein remains stable until the expiry date when stored at –20°C. Aliquot reconstituted protein to avoid repeated freezing/thawing cycles and store at –80°C for long term storage. Reconstituted protein can be stored at 4°C for a limited period of time; it does not show any change after one week at 4°C.

Quality Control Test

BCA to determine quantity of the protein.

SDS PAGE to determine purity of the protein.

LAL to determine quantity of endotoxin.

Applications

ELISA, Western blotting

Note

This product is intended for research use only.

References to this Product

• Ostojic J, Grozdanic S, Syed NA, Hargrove MS, Trent JT 3rd, Kuehn MH, Kardon RH, Kwon YH, Sakaguchi DS. Neuroglobin and cytoglobin distribution in the anterior eye segment: a comparative immunohistochemical study. J Histochem Cytochem. 2008 Sep;56 (9):863-72
• Ostojic J, Grozdanic SD, Syed NA, Hargrove MS, Trent JT 3rd, Kuehn MH, Kwon YH, Kardon RH, Sakaguchi DS. Patterns of distribution of oxygen-binding globins, neuroglobin and cytoglobin in human retina. Arch Ophthalmol. 2008 Nov;126 (11):1530-6
• Ostojic J, Sakaguchi DS, de Lathouder Y, Hargrove MS, Trent JT 3, Kwon YH, Kardon RH, Kuehn MH, Betts DM, Grozdanic S. Neuroglobin and cytoglobin: oxygen-binding proteins in retinal neurons. Invest Ophthalmol Vis Sci . Mar;47(3):1016-23 (2006)

References

• Garry DJ, Mammen PP. Neuroprotection and the role of neuroglobin.
• Mammen PP, Shelton JM, Goetsch SC, Williams SC, Richardson JA, Garry MG, Garry DJ. Neuroglobin, a novel member of the globin family, is expressed in focal regions of the brain.
• Pesce A, Dewilde S, Nardini M, Moens L, Ascenzi P, Hankeln T, Burmester T, Bolognesi M. Human brain neuroglobin structure reveals a distinct mode of controlling oxygen affinity.
• Sun Y, Jin K, Mao XO, Zhu Y, Greenberg DA. Neuroglobin is up-regulated by and protects neurons from hypoxic-ischemic injury.
• Sun Y, Jin K, Peel A, Mao XO, Xie L, Greenberg DA. Neuroglobin protects the brain from experimental stroke in vivo.

By research topic:

• Neural tissue damage markers

By molecule:

• Neuroglobin