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| Product Name | Recombinant Human Leukemia Inhibitory Factor Receptor (LIFR/CD118), Partial, Active |
| Catalog No. | PTR-HMM-0215 |
| Description | A recombinant human LIFR extracellular region spanning residues 45-833, produced in mammalian cells with C-terminal hFc1 and Flag tags. LIF-binding activity was verified by functional ELISA. |
| Intended Use | Suitable for functional ELISA and LIF-LIFR interaction studies. |
| Principle / Technology | A defined recombinant protein region is expressed and purified, then its structural quality and biological function are evaluated using the listed biochemical binding or activity assays. |
| Detection Method | SDS-PAGE; functional ELISA; LAL assay |
| Sample Type | Purified recombinant protein |
| Performance Range / Specifications | Purity: >=95% as determined by SDS-PAGE. Molecular weight: 119.3 kDa. Package sizes: 20 ug; 100 ug; 1 mg. |
| Sensitivity / LOD | In a functional ELISA, immobilized human LIF at 2 ug/mL bound human LIFR with an EC50 of 11.68-15.52 ng/mL. |
| Specificity | Binding activity was demonstrated with human leukemia inhibitory factor. |
| Reaction Conditions / Protocol | In a functional ELISA, immobilized human LIF at 2 ug/mL bound human LIFR with an EC50 of 11.68-15.52 ng/mL. |
| Components / Formulation | PBS, 6% trehalose, pH 7.4 |
| Storage Conditions | Store at -20 C or -80 C upon receipt. Aliquot before repeated use and avoid repeated freeze-thaw cycles. |
| Shelf Life | Typical stability is 6 months for liquid material and 12 months for lyophilized material when stored at -20 C or -80 C. |
| Package Specifications | 20 ug; 100 ug; 1 mg |
| Product Form | Lyophilized powder |
| Quality Control | Purity evaluated by SDS-PAGE; endotoxin tested by LAL assay; biological activity verified by functional ELISA. |
| Key Features | Active recombinant receptor protein; 45-833 aa; C-terminal hFc1-Flag tag; mammalian cell expression. |
| Purity | >=95% as determined by SDS-PAGE. |
| Activity / Unit Definition | In a functional ELISA, immobilized human LIF at 2 ug/mL bound human LIFR with an EC50 of 11.68-15.52 ng/mL. |
| Molecular Weight | 119.3 kDa |
| Source / Origin | Human protein produced in Mammalian cell. |
| pH Range / Optimal pH | pH 7.4 |
| Expiration Date / Stability | Typical stability is 6 months for liquid material and 12 months for lyophilized material when stored at -20 C or -80 C. |
| Regulatory / Compliance | For research use only; not for clinical diagnosis or treatment. |
| Compatibility | Suitable for functional ELISA and LIF-LIFR interaction studies. |
| Recommended Buffer System | PBS, 6% trehalose, pH 7.4 |
| Application Notes / Precautions | Briefly centrifuge the vial before opening. Reconstitute with sterile deionized water to 0.1-1.0 mg/mL. For long-term storage, add 5-50% glycerol as appropriate, divide into aliquots, and freeze. Avoid repeated freezing and thawing. A working aliquot may be kept at 4 C for up to one week. |
| Alternative Names / Synonyms | LIF receptor; LIF-R; CD118 |
| Lead Time | 3-7 business days |
| Availability Status | In Stock |
| Host Species | Human |
| Tag Information | C-terminal hFc1-Flag tag |
| Amino Acid Sequence | QKKGAPHDLKCVTNNLQVWNCSWKAPSGTGRGTDYEVCIENRSRSCYQLEKTSIKIPALSHGDYEITINSLHDFGSSTSKFTLNEQNVSLIPDTPEILNLSADFSTSTLYLKWNDRGSVFPHRSNVIWEIKVLRKESMELVKLVTHNTTLNGKDTLHHWSWASDMPLECAIHFVEIRCYIDNLHFSGLEEWSDWSPVKNISWIPDSQTKVFPQDKVILVGSDITFCCVSQEKVLSALIGHTNCPLIHLDGENVAIKIRNISVSASSGTNVVFTTEDNIFGTVIFAGYPPDTPQQLNCETHDLKEIICSWNPGRVTALVGPRATSYTLVESFSGKYVRLKRAEAPTNESYQLLFQMLPNQEIYNFTLNAHNPLGRSQSTILVNITEKVYPHTPTSFKVKDINSTAVKLSWHLPGNFAKINFLCEIEIKKSNSVQEQRNVTIKGVENSSYLVALDKLNPYTLYTFRIRCSTETFWKWSKWSNKKQHLTTEASPSKGPDTWREWSSDGKNLIIYWKPLPINEANGKILSYNVSCSSDEETQSLSEIPDPQHKAEIRLDKNDYIISVVAKNSVGSSPPSKIASMEIPNDDLKIEQVVGMGKGILLTWHYDPNMTCDYVIKWCNSSRSEPCLMDWRKVPSNSTETVIESDEFRPGIRYNFFLYGCRNQGYQLLRSMIGYIEELAPIVAPNFTVEDTSADSILVKWEDIPVEELRGFLRGYLFYFGKGERDTSKMRVLESGRSDIKVKNITDISQKTLRIADLQGKTSYHLVLRAYTDGGVGPEKSMYVVTKENS |
| UniProt Accession | P42702 |
| Protein Length | 789 aa |
| Expression Region | 45-833 aa |
| Endotoxin Level | <1.0 EU/ug as determined by the LAL method. |
For research use only, not for clinical use.
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