MSTN active protein

Recombinant Human MSTN

Cat. Num. AAA4159655

• Gene Names: MSTN; GDF8; MSLHP
• Purity: >95% as determined by SDS-PAGE
• Synonyms: MSTN; Recombinant Human MSTN; Growth differentiation factor 8; GDF-8; Recombinant Human Myostatin (MSTN); MSTN active protein

• Host: E Coli
• Purity/Purification: >95% as determined by SDS-PAGE
• Form/Format: Lyophilized from a 0.2 um filtered Tris solution pH 8.0.
• Sequence Length: 375

• Bioactivity: The ED(50) was determined by the dose-dependent proliferation inhibition of human MPC-11 cells was found to be in the range of 20-40 ng/mL.
• Endotoxin Level: <1.0 EU/ug of recombinant protein as determined by the LAL method.
• Reconstitution: A quick spin of the vial followed by reconstitution in distilled water to a concentration not less than 0.1 mg/mL. This solution can then be diluted into other buffers.
• Preparation and Storage: The lyophilized protein is stable for at least one year from date of receipt at-70 degree C. Upon reconstitution, this cytokine can be stored in working aliquots at 2-8 degree C for one month, or at-20 degree C for six months, with a carrier protein without detectable loss of activity. Avoid repeated freeze/thaw cycles.

Testing Data

Related Product Information for MSTN active protein

Growth differentiation Factor 8 (GDF-8), also known as myostatin, is a secreted protein that is expressed specifically in developing and adult skeletal muscle. It controls myoblast proliferation and is a potent negative regulator of skeletal muscle mass. GDF-8 belongs to the transforming growth factor beta (TGF-beta) superfamily, which includes the TGF-betas, bone morphogenetic proteins (BMPs), growth differentiation factors (GDFs), activins, inhibins, leftys, nodal, Mullerian inhibitory substance (MIS) and the glial cell line-derived neurotrophic factors (GDNFs). All TGF-beta superfamily members are synthesized and secreted as a homodimeric prepropeptide that is cleaved by proprotein convertases such as furin to generate the dimeric N-terminal propeptide and the dimeric C-terminal mature active protein. The C-terminal mature protein contains the characteristic conserved cysteine residues involved in the formation of the cysteine knot domain. Mouse GDF-8 cDNA encodes a 376 amino acid residue (aa) preproprotein with a putative 24 aa signal peptide, a 243 aa propeptide and a 109 aa mature protein. As is the case with most TGF-beta family proteins, GDF-8 is highly conserved across species. Mature human, mouse, rat, and cow GDF-8 share 100% aa sequence identity. Among TGF-beta family members, GDF-8 is most closely related to GDF-11/BMP-11. The two proteins share 65% overall aa sequence, within their mature regions, the two proteins differ only by 11 aa.residues. Similarly to TGF-beta-1, 2, and 3, the GDF-8 homodimeric propeptide and mature protein remained non-covalently linked after proteolytic cleavage, and is released as a biologically inactive latent complex that does bind its receptor. In serum, GDF-8 has also been found to exist in a large latent complex that also included FLGR (follistatin-related gene) and GASP-1 (growth and differentiation factor-associated serum protein-1) in addition to the propeptide. Recombinant GDF-8 propeptide is capable of associating with the active GDF-8 with high-affinity to reconstitute the latent complex and is potent GDF-8 antagonist.

NCBI and Uniprot Product Information

• NCBI GI #: 4885259
• NCBI GeneID: 2660
• NCBI Accession #: NP_005250.1
• NCBI GenBank Nucleotide #: NP_005250.1
• UniProt Accession #: O14793
• Molecular Weight: 13.0 kDa
• NCBI Official Full Name: growth/differentiation factor 8 preproprotein
• NCBI Official Synonym Full Names: myostatin
• NCBI Official Symbol: MSTN
• NCBI Official Synonym Symbols: GDF8; MSLHP
• NCBI Protein Information: growth/differentiation factor 8
• UniProt Protein Name: Growth/differentiation factor 8
• Protein Family: Growth/differentiation factor
• UniProt Gene Name: MSTN
• UniProt Synonym Gene Names: GDF8; GDF-8
• UniProt Entry Name: GDF8_HUMAN

NCBI Description

This gene encodes a secreted ligand of the TGF-beta (transforming growth factor-beta) superfamily of proteins. Ligands of this family bind various TGF-beta receptors leading to recruitment and activation of SMAD family transcription factors that regulate gene expression. The encoded preproprotein is proteolytically processed to generate each subunit of the disulfide-linked homodimer. This protein negatively regulates skeletal muscle cell proliferation and differentiation. Mutations in this gene are associated with increased skeletal muscle mass in humans and other mammals. [provided by RefSeq, Jul 2016]

Uniprot Description

MSTN: Acts specifically as a negative regulator of skeletal muscle growth. Defects in MSTN are the cause of muscle hypertrophy (MSLHP). MSLHP is a condition characterized by increased muscle bulk and strength. Affected individuals are exceptionally strong. Belongs to the TGF-beta family.

Protein type: Secreted; Secreted, signal peptide

Chromosomal Location of Human Ortholog: 2q32.2

Cellular Component: extracellular space

Molecular Function: cytokine activity; identical protein binding; protein binding; receptor binding; transforming growth factor beta receptor binding

Biological Process: cell development; muscle development; muscle maintenance; negative regulation of myoblast differentiation; negative regulation of protein kinase B signaling cascade; negative regulation of skeletal muscle growth; positive regulation of transcription, DNA-dependent; regulation of apoptosis; regulation of MAPKKK cascade

Disease: Muscle Hypertrophy