Description
The L130 monoclonal antibody specifically binds to CD18 which is also known as β2 integrin. CD18 is an ~90-95 kDa type I transmembrane glycoprotein that is encoded by ITGB2. CD18 associates with the integrin α chains CD11a, CD11b, CD11c, or CD11d to form the LFA-1, Mac-1, p150,95, or αDβ2 heterodimers, respectively. CD18 is expressed on virtually all normal peripheral blood leucocytes. CD18 serves as a leucocyte adhesion receptor and signaling receptor. It is essential for many immune responses that require cell-to-cell contact, such as lymphocyte adhesion, natural killer (NK) cell and T-lymphocyte cytolysis, and T lymphocyte proliferation.
BD® CompBeads can be used as surrogates to assess fluorescence spillover (compensation). When fluorochrome conjugated antibodies are bound to BD® CompBeads, they have spectral properties very similar to cells. However, for some fluorochromes there can be small differences in spectral emissions compared to cells, resulting in spillover values that differ when compared to biological controls. It is strongly recommended that when using a reagent for the first time, users compare the spillover on cells and BD® CompBeads to ensure that BD® CompBeads are appropriate for your specific cellular application.
Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated to the dye under optimum conditions that minimize unconjugated dye and antibody.
1. Researchers should determine the optimal concentration of this reagent for their individual applications.
2. The production process underwent stringent testing and validation to assure that it generates a high-quality conjugate with consistent performance and specific binding activity. However, verification testing has not been performed on all conjugate lots.
3. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
4. An isotype control should be used at the same concentration as the antibody of interest.
5. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
6. CF™ is a trademark of Biotium, Inc.
7. Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
8. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
9. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
10. Human donor specific background has been observed in relation to the presence of anti-polyethylene glycol (PEG) antibodies, developed as a result of certain vaccines containing PEG, including some COVID-19 vaccines. We recommend use of BD Horizon Brilliant™ Stain Buffer in your experiments to help mitigate potential background. For more information visit https://www.bdbiosciences.com/en-us/support/product-notices.
Specifications

General

SourceHuman SHH, amino acids (Cys24-Gly197) (Cys24Ile-Ile) (Accession# NP_000184), with a N-terminal Met was expressed in E. coli.
Molecular MassThe 176 amino acid recombinant protein has a predicted molecular mass of approximately 19.8 kD. The protein migrates at approximately 22 kD in both DTT-reducing and non-reducing conditions by SDS-PAGE. The predicted N-terminal amino acid is Met.
N-terminalSequence AnalysisMet-Ile-Ile-Gly-Pro-Gly-Arg-Gly-Phe-Gly
Purity≥ 95%, as determined by Coomassie stained SDS-PAGE.
Formulation0.1 μm filtered protein solution is in 10 mM sodium phosphate buffer, 0.3M NaCl, and in pH 7.2
Endotoxin LevelLess than or equal to 0.1 EU per μg of protein as determined by the LAL method.
Residual Host Cell Protein Content≤ 0.500 ng/μg by ELISA
Concentration25 μg & 100 μg sizes are bottled at 0.5 mg/mL
Storage & HandlingUnopened vial can be stored between 2°C and 8°C for up to 2 weeks, at - 20°C for up to six months, or at -70°C or colder until the expiration date. For maximum results, quick spin vial prior to opening. The protein can be aliquoted and stored at -20°C or colder. Stock solutions can also be prepared at 50 - 100 μg/mL in appropriate sterile buffer, carrier protein such as 0.2 - 1% endotoxin-free BSA or HSA can be added when preparing the stock solution. Aliquots can be stored between 2°C and 8°C for up to one week or stored at -20°C or colder for up to 3 months. Avoid repeated freeze/thaw cycles.
ActivityED50 = 0.15 - 0.6 μg/mL as measured by the ability to induce C3H10T1/2 cell differentiation in the presence of hBMP9 (20 ng/mL) as measured by alkaline phosphatase production.
ApplicationBioassay
Application NotesBioLegend carrier-free recombinant proteins provided in liquid format are shipped on blue-ice. Our comparison testing data indicates that when handled and stored as recommended, the liquid format has equal or better stability and shelf-life compared to commercially available lyophilized proteins after reconstitution. Our liquid proteins are verified in-house to maintain activity after shipping on blue ice and are backed by our 100% satisfaction guarantee. If you have any concerns, contact us at [email protected].
Application References(PubMed link indicates BioLegend citation)Huang WK, et al. 2021. Cell Stem Cell. 28:1657. PubMed
DisclaimerBioLegend Cell-Vive™ GMP Recombinant proteins are for research use only. Suitable for ex vivo cell processing. Not for injection or diagnostic or therapeutic use. Not for resale. BioLegend will not be held responsible for patent infringement or other violations that may occur with the use of our products.
FunctionSHH is essential in the patterning of early embryo, differentiation of the gastric epithelium, and T cells.
InteractionVentral neural tube, ventral somites, limb axis in developing embryo, and hematopoietic stem cells.
Ligand/ReceptorPatched-1 (PCTH1), patched 2 (PCTH2), and smoothened (SMO).
BioactivitySHH enhances BMP9 induced differentiation of C3H10T1/2 cells.
Cell SourcesNotochord, fetal intestine, liver, lung, and kidney
Antigen ReferencesEchelard Y, et al. 1993. Cell. 75:1417-1430. Marigo V, et al. 1995. Genomics. 28:44-51. Porter JA, et al. 1996. Science. 5285:255-9. Zeng X, et al. 2001. Nature. 411:716-720. Johnson RL, et al. 1997. Cell. 90:979-990. Briscoe J, Therond PP. 2013. Nat. Rev. Mol. Cell Biol. 14:416-29. Filmus J, Capurro M. 2014. Matrix Biol. 35:248-52. Chuang PT, McMahon AP. 1999. Nature. 397:617-21. Crompton T, et al. 2007. Nat. Rev. Immunol. 7:726-35. Shiotani A, et al. 2005. Am. J. Gastroenterol. 100:581-7.
Gene ID6469
UniProtView information about Sonic Hedgehog on UniProt.org
Other NamesSHH, TPT, HHG1, HLP3, HPE3, SMMCI, TPTPS, MCOPCB5
BD 753514 RY586 Mouse Anti-Human CD18 L130 | IRIGHT