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4 protocols using rabbit anti myc pab

1

Immunofluorescence Assay for E2 and MEK2 Proteins

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HEK293T cells were transiently cotransfected with pCAGGS-E2-Flag (1 μg) and pMyc-MEK2 (1 μg). PK-15 cells were mock infected or infected with CSFV at an MOI of 0.1. At 36 hpt or 48 hpi, the plasmid-transfected or CSFV-infected cells were fixed with 4% paraformaldehyde and permeabilized with 0.15% Triton X-100. The cells were further incubated with a mouse anti-Flag MAb (catalog no. F1804; Sigma-Aldrich) or anti-E2 MAb HQ06 (31 (link)) for 1.5 h, followed by incubation with a rabbit anti-Myc PAb (catalog no. C3956; Sigma-Aldrich) or a rabbit anti-MEK2 PAb (catalog no. sc-525; Santa Cruz). Subsequently, the cells were incubated with fluorescein isothiocyanate (FITC)-conjugated goat anti-mouse IgG antibody (catalog no. F2012; Sigma-Aldrich) and tetramethyl rhodamine isocyanate-conjugated goat anti-rabbit IgG antibody (whole molecule) (catalog no. T6778; Sigma-Aldrich). After incubation with 4,6-diamidino-2-phenylindole (DAPI), the cells were observed using a Leica SP2 confocal system (Leica Microsystems; Germany).
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2

Antibody Production and Characterization Protocol

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Chicken antisera against A/chicken/Shanghai/S1053/2013(H7N9) and a mouse anti-NP MAb were prepared in our laboratory by using conventional methods. The following primary antibodies were purchased from commercial sources: rabbit anti-glyceraldehyde-3-phosphate dehydrogenase (GAPDH) polyclonal antibody (PAb) (product no. 10494-1-AP from Proteintech, Wuhan, China), mouse anti-Flag MAb (product no. F3165), mouse anti-Myc MAb (product no. M4439), rabbit anti-Flag PAb (product no. F7425), and rabbit anti-Myc PAb (product no. C3965) from Sigma-Aldrich. The secondary antibody used for Western blotting was DyLight 800-conjugated goat anti-rabbit IgG (H+L) (product no. 072-07-15-06), purchased from KPL (Gaithersburg, MD); the secondary antibody used for confocal microscopy was Alexa Fluor 488-conjugated goat anti-mouse IgG (H+L) (product no. A11029), obtained from Thermo Fisher Scientific (Waltham, MA).
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3

PRRSV Infection in Cell Lines

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MARC-145 and 293FT cells were cultured in Dulbecco's modified Eagle's medium (DMEM, Gibco) supplemented with 10% fetal bovine serum (FBS, Gibco). Porcine pulmonary alveolar macrophages (PAMs) were prepared as previously described (38 (link)), and cultured in RPMI 1640 medium containing 10% FBS. All cells were cultured at 37°C with 5% CO2 in a humidified incubator (Thermo Fisher Scientific). The Chinese highly pathogenic PRRSV (HP-PRRSV) strain JXwn06 (GenBank accession no. EF641008) and low pathogenic PRRSV (LP-PRRSV) strain HB-1/3.9 (EU360130) were used in this study (39 (link)). Rabbit anti-p21 and anti-p27 polyclonal antibodies (pAb) were purchased from Proteintech Group (Chicago, IL, USA). Mouse anti-β-actin monoclonal antibody (mAb), mouse anti-HA mAb, rabbit anti-Myc pAb, mouse anti-Flag mAb were all purchased from Sigma-Aldrich. The specific mAbs raised against the N and nsp11 proteins of PRRSV were prepared in our laboratory. The plasmid pcDNA3.1-HA-Ubiquitin was purchased from Bioworld Technology, Inc. (Bloomington, MN, USA).
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4

Exploring GBP1 Interaction with FMDV NS5A

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BHK-21 cells grown to 60% confluence were cotransfected with pMyc-NS5A and either pFlag-GBP1 or pFlag-GBP1(K51A) (2 μg each), and PK-15 cells treated with 100 ng of IFN-β were infected with Shimen at an MOI of 0.1 for 48 h. The transfected or infected cells were fixed with 4% paraformaldehyde, blocked with 5% skim milk for 2 h, and then the transfected cells were incubated with a mouse anti-Flag MAb (1:100) or a rabbit anti-Myc PAb (1:100) (catalog no. C3956; Sigma-Aldrich), and the infected cells were incubated with a mouse anti-NS5A PAb (1:100) or a rabbit anti-GBP1 PAb (1:200) (catalog no. ab121039; Abcam) for 1 h. Following 1 h of incubation with an Alexa Fluor 647-conjugated donkey anti-mouse IgG(H+L) antibody (catalog no. 1692912; Life Technologies) and an Alexa Fluor 488-labeled donkey anti-rabbit IgG(H+L) antibody (catalog no. 1674651; Life Technologies), the cells were stained with 4′,6-diamidino-2-phenylindole (DAPI) for 10 min and examined using a Leica SP2 confocal system (Leica Microsystems). The colocalization coefficients were calculated by professional quantitative colocalization analysis software (CoLocalizer Pro, version 2.7.1).
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