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SRP3159 Sigma-Aldrich

SPARC/Osteonectin human

recombinant, expressed in CHO cells, ≥97% (SDS-PAGE), ≥97% (HPLC), cell culture tested

Synonym: BM-40, ON, Secreted protein acidic and rich in cysteine

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Properties

Related Categories Application Index, Biochemicals and Reagents, Cell Biology, Cell Signaling Enzymes, Cell Signaling and Neuroscience,
biological source   human
recombinant   expressed in CHO cells
assay   ≥97% (HPLC)
  ≥97% (SDS-PAGE)
form   lyophilized
potency   0.5-0.7 μg/mL
mol wt   mol wt 43.7 kDa
packaging   pkg of 50 μg
impurities   <0.1 EU/μg endotoxin, tested
color   white
suitability   cell culture tested
UniProt accession no.   P09486
shipped in   wet ice
storage temp.   −20°C
Gene Information   human ... SPARC(6678)

Description

Reconstitution

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.

Physical form

Lyophilized from 10 mM Sodium Phosphate, pH 7.6.

Biochem/physiol Actions

SPARC (secreted protein acidic and cysteine rich) binds to the structural matrix protein, such ascollagen and vitronectin, and thus, regulates cell interaction with extracellular matrix (ECM). It also has counter-adhesive effects on cells by negatively influencing focal adhesions. It arrests cells in the G1 phase of cell cycle, and hence, suppresses cell proliferation. SPARC protein regulates various growth factors, such as platelet-derived growth factor (PDGF), fibroblast growth factor 2 (FGF), and vascular endothelial growth factor (VEGF). In human cancers, this protein controls the activity and microenvironment of cancer cells, cell growth, apoptosis, adhesion, migration and invasion. It also controls the ECM and the activity of matrix metalloproteinases. In pancreatic cancer patients, the expression of this protein, especially in the stroma, might be linked with unfavorable prognosis. In mechanically-ventilated premature infants, SPARC levels in tracheal aspirate help determine the development of bronchopulmonary dysplasia (BPD) or death.

General description

SPARC (secreted protein acidic and cysteine rich) is a multifunctional Ca2+-binding glycoprotein that belongs to the matricellular protein family, and is one of the eight members of the SPARC family. In adult animals, SPARC protein is generally expressed in remodeling tissues, such as bone, mucosa of the gut, and healing wounds. It shows predominant expression in tumors and in disorders linked with fibrosis. It is composed of three domains, which include a novel follistatin-like module, the acidic N-terminal (NT) domain and an extracellular calcium-binding EC module containing two EF-hand motifs. It is also known as osteonectin, and has a molecular weight of 32kDa. The gene is localized to human chromosome 5q33.1, and the encoded protein is a single polypeptide composed of 285 amino acids.

Sequence

APQQEALPDE TEVVEETVAE VTEVSVGANP VQVEVGEFDD GAEETEEEVV AENPCQNHHC KHGKVCELDE NNTPMCVCQD PTSCPAPIGE FEKVCSNDNK TFDSSCHFFA TKCTLEGTKK GHKLHLDYIG PCKYIPPCLD SELTEFPLRM RDWLKNVLVT LYERDEDNNL LTEKQKLRVK KIHENEKRLE AGDHPVELLA RDFEKNYNMY IFPVHWQFGQ LDQHPIDGYL SHTELAPLRA PLIPMEHCTT RFFETCDLDN DKYIALDEWA GCFGIKQKDI DKDLVI

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
3

Documents

Certificate of Analysis


Request a Serum Sample

Milli-Q® Water Purification Solutions
Protocols & Articles
Peer-Reviewed Papers
15

References

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