Human LIN-28B protein (Recombinant) (His-Tag) (STJP017862)
SPECIFICATIONS
HostE.coli
ImmunogenHuman
General Information
| Short Description | Recombinant-Human LIN-28B-His-Tag protein was developed from e.coli and has a target region of His-Tag. For use in research applications. |
| Applications | SDS-PAGE |
| Host | E.coli |
| Note | STRICTLY FOR FURTHER SCIENTIFIC RESEARCH USE ONLY (RUO). MUST NOT TO BE USED IN DIAGNOSTIC OR THERAPEUTIC APPLICATIONS. |
Product Properties
| Concentration | 0.25 mg/mL |
| Formulation | Liquid in 20mM Tris-HCl buffer (pH 8.0) containing 0.2M NaCl, 10% Glycerol, 2mM DTT |
| Storage Instruction | For short term storage, keep at +2C to +8C for up to 1 week. For long term storage, aliquot and store at-20C, and avoid repeat freeze-thaw cycles. |
Target Information
| Gene Symbol | LIN28B |
| Gene ID | 389421 |
| Uniprot ID | LN28B_HUMAN |
| Accession Number | NP_001004317 |
| Immunogen | Human |
| Immunogen Region | 1-250aa |
| Immunogen Sequence |
Additional Info
| Tissue Specificity | Expressed at high levels in the placenta and, at mucher lower, in testis and fetal liver. Isoform 1 is only detected in placenta and in moderately and poorly differentiated hepatocellular carcinoma cells (at protein level). Isoform 2 is detected in fetal liver, non-tumor liver tissues, as well as well-differentiated tumor tissues (at protein level). Tends to be up-regulated in triple-negative (ER-,PR-,HER2-) breast tumors, as well as in liver, ovarian, and thyroid carcinomas. |
| Function | Suppressor of microRNA (miRNA) biogenesis, including that of let-7 and possibly of miR107, miR-143 and miR-200c. Binds primary let-7 transcripts (pri-let-7), including pri-let-7g and pri-let-7a-1, and sequester them in the nucleolus, away from the microprocessor complex, hence preventing their processing into mature miRNA. Does not act on pri-miR21. The repression of let-7 expression is required for normal development and contributes to maintain the pluripotent state of embryonic stem cells by preventing let-7-mediated differentiation. When overexpressed, recruits ZCCHC11/TUT4 uridylyltransferase to pre-let-7 transcripts, leading to their terminal uridylation and degradation. This activity might not be relevant in vivo, as LIN28B-mediated inhibition of let-7 miRNA maturation appears to be ZCCHC11-independent. Interaction with target pre-miRNAs occurs via an 5'-GGAG-3' motif in the pre-miRNA terminal loop. Mediates MYC-induced let-7 repression. When overexpressed, isoform 1 stimulates growth of the breast adenocarcinoma cell line MCF-7. Isoform 2 has no effect on cell growth. |
| Protein Name | Protein Lin-28 Homolog BLin-28b |
| Database Links | |
| Cellular Localisation | NucleusNucleolusCytoplasmPredominantly NucleolarIn Huh7 CellsPredominantly CytoplasmicWith Only A Subset Of Cells Exhibiting Strong Nuclear StainingHoweverThe Specificity Of The Polyclonal Antibody Used In These Experiments Has Not Been Not Documented |
| Alternative Protein Names | Protein Lin-28 Homolog B proteinLin-28b proteinLIN28B proteinCSDD2 protein |
Information sourced from Uniprot.org