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RESEARCH USE ONLYLong R3 IGF-1, IGF-1 LR3
IGF-1 LR3 is an 83-residue IGF-I analogue with a 13-residue N-terminal extension and an E3R substitution in mature IGF-I numbering, corresponding to residue 16 of the full LR3 chain. Select your format and quantity for pricing, batch availability and lead time.
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ABOUT THE MATERIAL
Identity, scientific context and the details that distinguish this entry.
IGF-1 LR3 is an 83-residue IGF-I analogue with a 13-residue N-terminal extension and an E3R substitution in mature IGF-I numbering, corresponding to residue 16 of the full LR3 chain.[Sources]
The 83-residue analogue is designed to alter interaction with IGF-binding proteins while retaining IGF-related biological activity. Culture conditions and binding-protein levels affect its comparison with native IGF-I.
IGF-binding proteins influence available growth factor. Compare receptor or cell responses under defined binding-protein and medium conditions to distinguish analogue behavior from culture-system effects.
A CLOSER LOOK
Read each finding with its study model and material identity.
The cited study included Long R3 IGF-I in embryonic chick motoneuron-survival experiments. Its separate choline acetyltransferase comparisons describe IGF-I, IGF-II and des(1–3) IGF-I; that endpoint should not be assigned to Long R3 from this paper. Defined binding-protein and medium conditions help interpret the survival comparison.
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BEFORE YOU ENQUIRE
IGF-binding proteins influence available growth factor. Compare receptor or cell responses under defined binding-protein and medium conditions to distinguish analogue behavior from culture-system effects.
Use the specification and available safety or stability information for the offered lot, form and packaging. Request written conditions before ordering; literature alone does not establish a universal temperature, shelf life or reconstitution procedure.
The displayed value is a catalogue specification. Assess the offered lot against its matching COA and method. Chromatographic purity, component content and biological activity are different measurements; confirm which results are available.
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SOURCES
Content updated
Neff NT, Prevette D, Houenou LJ, Lewis ME, Glicksman MA, Yin QW, Oppenheim RW. 1993, DOI: 10.1002/neu.480241203
Embryonic chick motoneuron culture
Merck / Sigma-Aldrich
Reference identity for the LR3 analogue; separate supplier product
Publications describe their own study materials and methods. They are distinct from BatchTide specifications and lot-release records. Materials listed here are for laboratory research only, not for human or veterinary use.
EXPLORE THE CATALOGUE
Explore related entries. Similar research contexts do not establish interchangeability.