CD4 Antibody (YA537)
Based on 1 Customer Validation
CD4 Antibody (YA537) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to CD4.
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Host:
Rabbit
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Isotype:
IgG
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Application:
WB, IHC-P, ICC/IF, FC, IF-Tissue, mIHC
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Reactivity :
Human
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Formulation:
Supplied in 1*TBS (pH7.4), 0.05% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.
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Conjugation:
Non-conjugated
Applications
| Application |
WB
WB: Western Blot
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ICC/IF
ICC/IF: Immunocytochemistry/
Immunofluorescence |
IF-Tissue
IF-Tissue: Immunofluorescence-Tissue
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IHC-P
IHC-P: Immunohistochemistry-Paraffin
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FC
FC: Flow Cytometry
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mIHC
mIHC: Multiplex Immunohistochemical
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| Dilution Ratio | 1:1000-1:2000 | 1:50-1:200 | 1:200 | 1:400-1:800 | 1:500-1:1,000 | 1:800-1:1,000 |
Product Details
CD4 Antibody (YA537) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to CD4.
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Host Rabbit
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Clonality Recombinant, Monoclonal
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Species ReactivityHuman
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Observed Molecular WeightObserved band size: 55 kDaNote: Due to possible protein modifications or aggregation, the molecular weight should be confirmed by actual measurement, and the predicted value is for reference only.
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Calculated Molecular Weight Predicted band size: 51 kDa
Synthetic peptide corresponding to Human CD4.AA range:196-416.
Endogenous
Protein A affinity purified.
Non-conjugated
Unmodified
IgG
Product Properties
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Appearance
Liquid
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Formulation
Supplied in 1*TBS (pH7.4), 0.05% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.
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Storage & Stability
Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.
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Shipping
Shipping with blue ice.
Verification Images
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Western blot analysis of extracts from THP-1(lane 2(20μg), U937 (lane 3(20μg) and HEK293(lane 4(20μg) using CD4 (HY-P80055) Rabbit mAb. Proteins were transferred to a PVDF membrane and blocked with 5% non-fat milk in TBST for 2 hour at room temperature. The primary antibody (1/1000) and Loading control antibody (Beta Actin, HY-P80438, 1/10000) was used in 5% non-fat milk in TBST at 4°C overnight. Goat Anti-Mouse/Rabbit IgG-HRP Secondary Antibody (1/10000) was used for 1 hour at room temperature.
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Immunocytochemistry analysis of Hela cells labeling CD4 with CD4 Antibody (HY-P80055)at 1/50 dilution. Cells were fixed in 4% paraformaldehyde for 15 minutes at room temperature, permeabilized with 0.1% Triton X-100 for 10 minutes at room temperature, then blocked with QuickBlock™ Blocking Buffer for Immunol Staining for 10 min at room temperature. Cells were then incubated with CD4 Antibody (HY-P80055) at 1/50 dilution in QuickBlock™ Blocking Buffer for Immunol Staining at 4 ℃. Alexa Fluor® 488-conjugated AffiniPure Goat Anti-Rabbit IgG H&L(HY-P8002, Green) was used as the secondary antibody at 1/1,000 dilution. PBS instead of the primary antibody was used as the secondary antibody only control. The Nuclear counterstain was DAPI (Blue).
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Immunocytochemistry analysis of HepG2 cells labeling CD4 with CD4 Antibody (HY-P80055) at 1/50 dilution. Cells were fixed in 4% paraformaldehyde for 15 minutes at room temperature, permeabilized with 0.1% Triton X-100 for 10 minutes at room temperature, then blocked with QuickBlock™ Blocking Buffer for Immunol Staining for 10 min at room temperature. Cells were then incubated with CD4 Antibody (HY-P80055) at 1/50 dilution in QuickBlock™ Blocking Buffer for Immunol Staining at 4 ℃. Alexa Fluor® 488-conjugated AffiniPure Goat Anti-Rabbit IgG H&L(HY-P8002, Green) was used as the secondary antibody at 1/1,000 dilution. PBS instead of the primary antibody was used as the secondary antibody only control. The Nuclear counterstain was DAPI (Blue).
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Immunohistochemical analysis of paraffin-embedded human Colon cancer tissue using CD4 antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P80055, 1:400 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium. -
Immunohistochemical analysis of paraffin-embedded human Tonsil tissue using CD4 antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P80055, 1:400 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium. -
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human Liver Cancer tissue using CD4 antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P80055, 1:400 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with TSA520. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium. -
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human Esophageal Carcinoma tissue using CD4 antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P80055, 1:400 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with TSA520. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium. -
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human Prostate Cancer tissue using CD4 antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P80055, 1:400 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with TSA520. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium.
Background
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Function
Integral membrane glycoprotein that plays an essential role in the immune response and serves multiple functions in responses against both external and internal offenses. In T-cells, functions primarily as a coreceptor for MHC class II molecule:peptide complex. The antigens presented by class II peptides are derived from extracellular proteins while class I peptides are derived from cytosolic proteins. Interacts simultaneously with the T-cell receptor (TCR) and the MHC class II presented by antigen presenting cells (APCs). In turn, recruits the Src kinase LCK to the vicinity of the TCR-CD3 complex. LCK then initiates different intracellular signaling pathways by phosphorylating various substrates ultimately leading to lymphokine production, motility, adhesion and activation of T-helper cells. In other cells such as macrophages or NK cells, plays a role in differentiation/activation, cytokine expression and cell migration in a TCR/LCK-independent pathway. Participates in the development of T-helper cells in the thymus and triggers the differentiation of monocytes into functional mature macrophages; (Microbial infection) Primary receptor for human immunodeficiency virus-1 (HIV-1) (PubMed:12089508, PubMed:16331979, PubMed:2214026, PubMed:9641677). Down-regulated by HIV-1 Vpu (PubMed:17346169). Acts as a receptor for Human Herpes virus 7/HHV-7 (PubMed:7909607)
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Subcellular Localization
Cell membrane; Single-pass type I membrane protein
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Expression
Tissue_specificity:CD4 is highly expressed in helper T cells. The presence of CD4 is a hallmark of helper T cells, which are specifically responsible for activating and proliferating cytotoxic T cells, regulating B cells, or activating phagocytes. CD4 is also present in other immune cells, such as macrophages, dendritic cells, or NK cells.
Positive sample: U937 cell lysate, THP-1 cell lysate, THP-1, human tonsil tissue, human spleen tissue, human lymph nodes tissue, human liver tissue, human prostate cancer, human cervical cancer. -
Subunit
Forms disulfide-linked homodimers at the cell surface. Interacts with LCK (PubMed:16888650). Interacts with PTK2/FAK1 (PubMed:18078954). Binds to P4HB/PDI. Interacts with IL16; this interaction induces a CD4-dependent signaling in lymphocytes (PubMed:1673145). Interacts (via Ig-like V-type domain) with MHCII alpha chain (via alpha-2 domain) and beta chain (via beta-2 domain); this interaction increases the affinity of TCR for peptide-MHCII. CD4 oligomerization via Ig-like C2-type 2 and 3 domains appears to be required for stable binding to MHCII and adhesion between T cells and APCs (PubMed:21900604, PubMed:27114505, PubMed:7604010). Interacts with Aedes aegypti long form salivary protein D7L2 (PubMed:36070318). Interacts with Aedes aegypti neutrophil-stimulating factor 1 (PubMed:36070318). Interacts with Aedes aegypti venom allergen-1 (PubMed:36070318)
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SwissProt ID
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Research Field
Tags & Cell Markers
Documentation
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Data Sheet (258 KB)
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SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 KB)
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User Guide for Antibodies (1077 KB)