GDF-8/Myostatin Antibody [Alexa Fluor® 488]

• Reactivity: Mu
• Applications: WB, B/N
• Clonality: Polyclonal
• Host: Sheep
• Conjugate: Alexa Fluor 488

GDF-8/Myostatin Antibody [Alexa Fluor® 488] Summary

• Immunogen: Mouse myeloma cell line NS0-derived recombinant mouse GDF‑8/Myostatin Propeptide
  Asn25-Ser265
  Accession # O08689
• Specificity: Detects GDF‑8/Myostatin Propeptide in direct ELISAs and Western blots. In direct ELISAs, less than 10% cross‑reactivity with mature recombinant mouse (rm) GDF-8 is observed and less than 5% cross-reactivity with mature rmGDF-1, -3, -5, -6,
• Isotype: IgG
• Clonality: Polyclonal
• Host: Sheep
• Purity Statement: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • Neutralization
  • Western Blot

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
• Buffer: Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for GDF-8/Myostatin Antibody [Alexa Fluor® 488]

• GDF8
• GDF-8
• GDF8growth differentiation factor 8
• growth/differentiation factor 8
• MSLHP
• MSTN
• Myostatin

Background

Growth Differentiation Factor 8 (GDF-8), also known as Myostatin, is a secreted TGF-beta superfamily 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 (1‑3). Mouse GDF-8 is synthesized as a 376 amino acid (aa) preproprotein that consists of a 24 aa signal peptide, a 243 aa propeptide, and a 109 aa mature protein (2). Within the propeptide, mouse GDF-8 shares 96% and 99% aa sequence identity with human and rat GDF-8, respectively. GDF-8 is secreted as a preproprotein that is cleaved by BMP-1 family proteases to separate the 35‑40 kDa propeptide from the 12 kDa bioactive mature protein (4‑6). This results in a latent complex containing a disulfide-linked dimer of the mature protein and two noncovalently-associated molecules of the propeptide (2, 6). The GDF-8 propeptide functions as an inhibitor of mature GDF-8, and GDF-8 activity can also be inhibited through association with Follistatin, FLRG, Decorin, or GASP-1 (6‑11). The uncleaved GDF-8 proprotein binds Latent TGF-beta bp3 which can sequester it in the extracellular matrix and prevent the proteolytic cleavage of the propeptide (12). GDF-8 binds to the type II Activin receptor Activin RIIB which then associates with the type I receptors Activin RIB/ALK-4 or TGF-beta RI/ALK-5 to induce signaling (13). GDF-8 additionally inhibits adipogenic differentiation of mesenchymal stem cells and preadipocytes (14). Genetic deletion of GDF-8 or in vivo administration of the GDF-8 propeptide induces muscle hypertrophy as well as enhanced glucose utilization and insulin sensitivity and a reduction in overall fat mass (15, 16).

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.