Peptides / Category
Growth & Muscle Peptide Testing
Larger recombinant proteins and IGF variants are notoriously difficult to verify by chemistry alone — folding, aggregation, and bacterial-expression byproducts matter. Apollo pairs HPLC purity with intact-mass LC-MS and SEC for aggregation.
Recommended Panel
- ✓SEC-HPLC (aggregation)
- ✓RP-HPLC purity
- ✓Intact-mass LC-MS
- ✓Endotoxin (LAL)
Common Impurities to Watch For
Aggregates (dimer/trimer), oxidation, host-cell protein, endotoxin from E. coli expression.
Growth & Muscle peptides we test (7)
ACE-031
~76 kDa
Soluble ActRIIB decoy designed to bind myostatin and related ligands.
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Follistatin-344
~37 kDa
Myostatin inhibitor studied for muscle growth.
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Frag 176-191 (HGH Fragment)
1815.08 g/mol
C-terminal hGH fragment studied for fat metabolism.
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IGF-1 LR3
~9111 g/mol
Modified IGF-1 with Arg3 substitution and 13-aa N-terminal extension; ~3x potency, longer half-life.
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IGF-DES (1-3)
~7400 g/mol
Truncated IGF-1 missing first three N-terminal residues. Active locally.
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MGF (Mechano Growth Factor)
2867.21 g/mol
IGF-1 splice variant produced under mechanical muscle loading.
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PEG-MGF
~2867 + PEG g/mol
Pegylated MGF with extended half-life.
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