Recombinant Macrovipera lebetina obtusa Disintegrin obtustatin

SKU: P83469

Size: 100ug. Other sizes are also available.

Activity: Not tested

Research Areas: Others

Uniprot ID: P83469

Gene Names: N/A

Alternative Name(s):

Abbreviation: Recombinant Macrovipera lebetina obtusa Disintegrin obtustatin protein

Organism: Macrovipera lebetina obtusa (Levant blunt-nosed viper) (Vipera lebetina obtusa)

Source: E.coli

Expression Region: 1-41aa

Protein Length: Full Length

Tag Info: N-terminal GST-tagged

Target Protein Sequence: CTTGPCCRQCKLKPAGTTCWKTSLTSHYCTGKSCDCPLYPG

MW: 31.1 kDa

Purity: Greater than 90% as determined by SDS-PAGE.

Endotoxin: Not test

Biological_Activity:

Form: Liquid or Lyophilized powder

Buffer: If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.

Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Storage: The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20℃/-80℃. The shelf life of lyophilized form is 12 months at -20℃/-80℃.

Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4℃ for up to one week.

Relevance: Is a potent and selective inhibitor of alpha-1/beta-1 (ITGA1/ITGB1) integrin. It blocks the adhesion of alpha-1/beta-1-expressing K562 cells to immobilized collagens IV and I with IC(50) of 2 and 0.5 nM, respectively. Potently inhibits angiogenesis in chicken and in mouse model and reduces tumor development by half. Is 25-fold less potent than viperistatin.

Reference: "Obtustatin: a potent selective inhibitor of alpha1beta1 integrin in vitro and angiogenesis in vivo." Marcinkiewicz C., Weinreb P.H., Calvete J.J., Kisiel D.G., Mousa S.A., Tuszynski G.P., Lobb R.R. Cancer Res. 63: 2020-2023(2003)

Function: