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SRP3131

Sigma-Aldrich

Osteopontin human

recombinant, expressed in HEK 293 cells, ≥97% (SDS-PAGE), ≥97% (HPLC), suitable for cell culture

Sinonimo/i:

Bone sialoprotein 1, Nephropontin, Secreted phosphoprotein 1, Uropontin

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About This Item

Codice UNSPSC:
12352200
NACRES:
NA.32

Origine biologica

human

Ricombinante

expressed in HEK 293 cells

Saggio

≥97% (HPLC)
≥97% (SDS-PAGE)

Forma fisica

lyophilized

PM

60.0-65.0 kDa

Confezionamento

pkg of 50 μg

tecniche

cell culture | mammalian: suitable

Impurezze

<0.1 EU/μg endotoxin, tested

Colore

white to off-white

Compatibilità

suitable for molecular biology

N° accesso UniProt

Condizioni di spedizione

wet ice

Temperatura di conservazione

−20°C

Informazioni sul gene

human ... SPP1(6696)

Descrizione generale

Research area: Cell signaling. Osteopontin is initially secreted as a 298 amino acid protein, which is subject to multiple post-translational modifications including glycosylation, phosphorylation, and specific proteolytic cleavages into various smaller molecular weight fragments. Osteopontin is expressed in a wide range of cells and tissues including osteoblasts, various tumor cell lines, extraosseous cells in the inner ear, brain, kidney, deciduum, placenta, and odontoblasts. Recombinant human Osteopontin is a 298 amino acid protein, which, due to glycosylation, migrates at an apparent molecular weight of 60.0-65.0kDa by SDS-PAGE analysis under reducing conditions.

Applicazioni

Osteopontin human has been used in in vitro invasion assay to study the effect of endostar on non-small cell lung cancer cell invasion.It has been used in the cell culture of primary human brain vascularsmooth muscle cells. Osteopontin human has also been used to study itseffects on the migration of human fibroblasts.

Azioni biochim/fisiol

Osteopontin is a secreted glycoprotein that functions as a ligand to αvβ3 integrin and possibly other receptors. It binds tightly to hydroxyapatite and can act as a structural component of the extracellular mineralized matrix. In addition to its involvement in mineralized matrix formation, Osteopontin can also function as a cytokine that stimulates the release of IFNg (interferon γ) and IL-12 (interleukin 12), while inhibiting the production of IL-10. Osteopontin is involved in inflammation and also regulates immunity against infectious diseases. It also co-stimulates T cell proliferation. Osteopontin is also associated with multiple sclerosis. It participates in inflammation in Crohn′s Disease. Osteopontin plays a crucial role in bone remodelling and suppresses ectopic calcification.

Sequenza

IPVKQADSGS SEEKQLYNKY PDAVATWLNP DPSQKQNLLA PQNAVSSEET NDFKQETLPS KSNESHDHMD DMDDEDDDDH VDSQDSIDSN DSDDVDDTDD SHQSDESHHS DESDELVTDF PTDLPATEVF TPVVPTVDTY DGRGDSVVYG LRSKSKKFRR PDIQYPDATD EDITSHMESE ELNGAYKAIP VAQDLNAPSD WDSRGKDSYE TSQLDDQSAE THSHKQSRLY KRKANDESNE HSDVIDSQEL SKVSREFHSH EFHSHEDMLV VDPKSKEEDK HLKFRISHEL DSASSEVN

Stato fisico

Lyophilized from 10 mM Sodium Phosphate, pH 7.0.

Ricostituzione

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable


Certificati d'analisi (COA)

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W T Butler
Connective tissue research, 23(2-3), 123-136 (1989-01-01)
Osteopontin is an acidic glycoprotein of about 41,500 daltons that has been isolated from rat, human and bovine bone. It is rich in aspartic acid, glutamic acid and serine and contains about 30 monosaccharides, including 10 sialic acids. Several types
D T Denhardt et al.
FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 7(15), 1475-1482 (1993-12-01)
In this review most of the various known, suspected, or postulated functions of osteopontin, a secreted highly acidic phosphoprotein, are discussed in terms of what we currently know about the protein. These include 1) binding of OPN both to cells
Osteopontin-hydroxyapatite interactions in vitro: inhibition of hydroxyapatite formation and growth in a gelatin-gel.
Boskey AL, et al.
Bone and Mineral, 22, 147-159 (1993)
Endostar, a modified endostatin inhibits non small cell lung cancer cell in vitro invasion through osteopontin-related mechanism.
Ni Q, et al.
European Journal of Pharmacology, 614, 1-6 (2009)
Osteopontin, a protein with cytokine-like properties, is associated with inflammation in Crohn's disease.
Agnholt J, et al.
Scandinavian Journal of Immunology, 65, 453-460 (2007)

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