Objective(s): Antibodies against actin, as one of the most widely studied structural and multifunctional housekeeping proteins in eukaryotic cells, are used as internal loading controls in western blot analyses. The reactivity of the antibody with -actin protein in a panel of different cell lysates was then evaluated by western blot. In addition, the reactivity of the antibody with the corresponding protein was also evaluated by Immunocytochemistry and Immunohistochemistry in different samples. Results: The antibody could recognize the immunizing peptide in ELISA. It could also recognize -actin protein in western blot as well as in immunocytochemistry Rabbit Polyclonal to p70 S6 Kinase beta. and immunohistochemistry. Conclusion: BMS-345541 HCl Our data suggest that this antibody may be used as an internal control in western blot analyses as well as in other immunological applications such as ELISA, immunocytochemistry and immunohistochemistry. from the N-terminal region of -actin protein was designed. The immunograde peptide was purchased (Thermo Electron Corporation, GmbH, Ulm, Germany) and then conjugated to Keyhole limpet hemocyanin (KLH) and Bovine serum albumin (BSA) (Sigma, St. Louis, MO) via glutaraldehyde as linker separately and simultaneously using the same buffer systems and methods as described (9). The peptideCKLH conjugate was used for rabbit immunization and the peptide-BSA was used for conjugation efficacy assessment. Confirmation of conjugation by SDS-PAGE To check the efficacy of conjugation, 10 g of peptide-BSA was run on 10% SDS-PAGE using a mini-PROTEAN electrophoresis instrument (Bio-Rad Laboratories, Philadelphia, PA). The gel was stained with Coommassie Blue R-250 (Sigma). BMS-345541 HCl The BSA-peptide conjugate was used to test the conjugation efficacy, since the KLH-conjugate was a very large protein conjugate to enter the separating gel during electrophoresis, and thus impossible to be evaluated by SDS-PAGE directly. Rabbit immunization A female white New Zealand rabbit was immunized 5 times with two-week intervals for each injection. In the first immunization, 250 g KLH-peptide and an equal volume of Freunds complete adjuvant (Sigma) were mixed and injected intramuscularly into the femoral muscle. For the subsequent immunizations, 125 g peptide-KLH was emulsified in Freunds incomplete adjuvant (Sigma) and injected. Titration of antibody in serum samples Before each immunization, blood was drawn by venous puncture from the rabbit ear and allowed to clot for 2 to 3 3 hr at room temperature before preparation of sera. Titration of the specific polyclonal antibody was then performed using ELISA (10). Antibody purification Rabbit sera were filtered through 0.45 m filters and antibody was purified by affinity chromatography column prepared by coupling the immunogenic peptide to CNBr-activated sepharose 4B (GE Healthcare, Uppsala, Sweden). The recovery of the antibody, the evaluation of its reactivity with immunizing peptide and the assessment of its purity were performed as described previously (10). Cell lysate preparation and western blot analysis The ability of the antibody to recognize -actin was assessed by western blotting. Different samples were gathered and each was lysed in 1 ml of lysis buffer formulated with 1% Triton X-100, 50 mM Tris-HCl, pH 7.4, 150 mM NaCl, 5 mM EDTA, and 1% protease inhibitor cocktail (Sigma) for 1 hr on glaciers with 15 min intervals of vortexing for 30 sec. The cell lysates were centrifuged at 500 g for 30 min then. The supernatants had been collected and proteins concentrations in the lysates had been assessed by BCA Proteins Assay Kit based on the producers guidelines (Thermo Scientific, IL, USA). Twenty g of every sample was operate on a 10% SDS-PAGE (100 V for 2 hr) under both decreased and non-reduced circumstances. After electrophoresis, the solved protein were moved onto Immobilon-PVDF membranes (Millipore Company, USA). The membranes had been blocked right away at 4C with 5% nonfat dairy in PBS formulated with 0.05% Tween 20 (PBS-T). All antibody incubations had been performed BMS-345541 HCl in PBS-T formulated with 3% nonfat dairy. Filters had been incubated with 10 ng/ml of anti–actin antibody for 1.5 hr at room temperature. After intensive cleaning with PBS-T, the filter systems had been incubated with peroxidase-conjugated sheep anti-rabbit immunoglobulins (Avicenna Analysis Institute, Tehran, Iran) for 1 hr at area temperature accompanied by cleaning and developing with ECL chemiluminescent recognition system (GE Health care, Uppsala, Sweden). Harmful controls were utilized to check on the probable relationship with supplementary antibody (HRP-conjugated sheep.
Category Archives: A2A Receptors
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Tags
a 67 kDa type I transmembrane glycoprotein present on myeloid progenitors
and differentiation. The protein kinase family is one of the largest families of proteins in eukaryotes
Apoptosis
bladder
brain
breast
cell cycle progression
cervix
CSP-B
Cyproterone acetate
EGFR) is the prototype member of the type 1 receptor tyrosine kinases. EGFR overexpression in tumors indicates poor prognosis and is observed in tumors of the head and neck
EM9
endometrium
erythrocytes
F3
Goat polyclonal to IgG H+L)
Goat polyclonal to IgG H+L)Biotin)
GRK4
GSK1904529A
Igf1
Mapkap1
monocytes andgranulocytes. CD33 is absent on lymphocytes
Mouse monoclonal to CD33.CT65 reacts with CD33 andtigen
Palomid 529
platelets
PTK) or serine/threonine
Rabbit Polyclonal to ARNT.
Rabbit polyclonal to BMPR2
Rabbit Polyclonal to CCBP2.
Rabbit Polyclonal to EDG4
Rabbit polyclonal to EIF4E.
Rabbit polyclonal to IL11RA
Rabbit polyclonal to LRRIQ3
Rabbit Polyclonal to MCM3 phospho-Thr722)
Rabbit Polyclonal to RBM34
SB 216763
SKI-606
SNX-5422
STK) kinase catalytic domains. Epidermal Growth factor receptor
stomach
stomach and in squamous cell carcinoma.
TNFSF8
TSHR
VEGFA
vulva