Recombinant Human S100B Protein (His Tag)

Specifications

Catalog number

PKSH033440-01

Size / count

10 µg

Dry ice

No

Hazardous

No

Discontinued

No

Background

S100-B; is an acidic protein with a molecular weight of 21 kDa belonging to the S100 family. S100-B contains two EF-hand-type calcium-binding motifs separated by a hinge region with a hydrophobic cleft. S100-B plays an important role in neurodevelopment; differentiation; and brain construction. S100-B has neuroprotective effects; but at high concentrations S100-B is neurotoxic. Extracellular concentration of S100-B increases following brain damage; which easily penetrates into cerebrospinal fluid in brain damage and then into the blood. S100-B is expressed and produced by astrocytes in vertebrate brains and in the CNS; and the astrocytes are the major cells producing S100-B protein in gray matter; as well as oligodendrocytes are the predominant S100-B in protein producing cells in white matter. The major advantage of using S100-B is that elevations in serum or CSF levels provide a sensitive measure for determining CNS injury at the molecular level before gross changes develop; enabling timely delivery of crucial medical intervention before irreversible damage occurs. In addition; S100-B; which is also present in human melanocytes; is a reliable marker for melanoma malignancy both in bioptic tissue and in serum.

Abbreviation

S100B

Synonyms

NEF; Protein S100-B; S-100 protein beta chain; S-100 protein subunit beta; S100; S100 beta; S100 calcium binding protein B; S100 calcium-binding protein B; S100-B; S100b; S100beta

Accession Number

P04271

Expression System

E.coli

Tag

N-His

Sequence

Met 1-Glu92

Field of Research

Cell biology; epigenetics and nuclear signal; Stem cells

Endotoxin

< 1.0 EU per μg of the protein as determined by the LAL method.

Purity

> 95 % as determined by reducing SDS-PAGE.

Bioactivity

Not validated for activity

Reconstitution

Please refer to the printed manual for detailed information.

Shipping Conditions

This product is provided as lyophilized powder which is shipped with ice packs.

Storage Conditions

Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

Calculated Molecular Weight

12.2 kDa

Observed Molecular Weight

12 kDa

Species

Human