| Field | Specification |
|---|---|
| Mfr No | |
| Alternative Names | lethal(3) malignant brain tumor-like protein 1, L3MBTL1 |
| Formulation | |
| Molecular Weight | |
| Product Type | |
| Shipping | |
| Species | |
| Storage | |
| UniProt # |
Scientific Background
Polycomb group (PcG) protein that specifically recognizes and binds mono- and dimethyl-lysine residues on target proteins, therey acting as a reader of a network of post-translational modifications. PcG proteins maintain the transcriptionally repressive state of genes: acts as a chromatin compaction factor by recognizing and binding mono- and dimethylated histone H1b/HIST1H1E atLys26 (H1bK26me1 and H1bK26me2) and histone H4 at Lys-20 (H4K20me1 and H4K20me2), leading to condense chromatin and repress transcription. Recognizes and binds p53/TP53 monomethylated at Lys-382, leading to repress p53/TP53-target genes. Also recognizes and binds RB1/RB monomethylated at Lys-860.
Product Description
E. coli ExpressionRecombinant L3MBTL1 Human protein is produced using a validated E. coli expression system and supplied in aqueous buffer solution. Suitable for enzyme kinetics, inhibitor screening, binding assays, structural studies, and related biochemical research applications.
Protein Specifications
| UniProt ID | Q9Y468 |
|---|---|
| Expression System | E. coli |
| Amino Acids / Region | 191-530 |
| Affinity Tag | N-terminal GST-tag |
| Molecular Weight | 65.5 kDa |
| Formulation | 40 mM Tris-HCl, pH 8.0, 110 mM NaCl, 2.2 mM KCl, 1 mM DTT, 20 mM glutathione, an… |
| Storage | At least 6 months at -80°C. |
| Biosafety Level | Not applicable (BSL-1) |
Safety & Handling
Avoid freeze/thaw cycles.
This protein was produced in E. coli. Expression system selection determines post-translational processing, disulfide bond formation, and co-factor incorporation — all of which affect enzymatic activity. Insect cell (Sf9) systems are preferred for kinases and multi-subunit enzymes that require phosphorylation or chaperone assistance; E. coli is used for structurally simpler proteins.
This protein spans amino acids 191-530. Confirm the region includes your domain of interest — the active site, binding pocket, or substrate recognition sequence — before placing your order. Refer to the UniProt database for domain annotation.
Purity is assessed by SDS-PAGE; see the Certificate of Analysis. A gel image is provided with each lot. BPS Bioscience performs rigorous QC on each lot, including purity assessment and functional activity testing where applicable. Contact technical support if purity ≥99% is required for biophysical measurements.
Useful for the study of Polycomb group (PcG) proteins, protein binding assays, screening inhibitors, and selectivity profiling. Refer to the product datasheet for validated protocols and recommended assay conditions. Contact BioHippo technical support for application-specific guidance.
At least 6 months at -80°C. Avoid repeated freeze-thaw cycles — prepare single-use working aliquots. Add BSA or glycerol to aliquots if storing diluted enzyme is necessary. Typical stability is at least 6 months at −80°C.
BioHippo offers flexible sourcing for qualified research institutions and partners.
- Bulk quantities: Large-scale orders for HTS campaigns or structural studies.
- Custom constructs: Alternative tag positions, truncation variants, or point mutants may be available upon request.
- Biotinylated variants: Avi-Tag site-specific biotinylation is available for SPR/BLI surface capture applications.
- Extended QC data: Activity assay data, SEC-HPLC profiles, or additional purity methods available on request.
Contact BioHippo customer support for custom requirements.
- Koga, H., et al., Oncogene. 1999 Jul 1;18(26):3799-809.
- Trojer, P., et al., Cell. 2007 Jun 1;129(5):915-28.
- Min, J., et al. Nat. Structl. & Mol. Biol. 2007;14:1229 - 1230.
