Loading...

Skip to main content

Call us on + 1 (800) 604-9114 for more information about our products

Looking for specific datasheet Manual/COA/MSDS?
Request a Manual/COA/MSDS

Interested to get a quote about our products?
Request a Quote

CD21 Cell Lysate | CR2 cell lysate

Human CD21 HEK293 Overexpression Lysate

Gene Names
CR2; CR; C3DR; CD21; CVID7; SLEB9
Applications
Western Blot
Synonyms
CD21; Human CD21 HEK293 Overexpression Lysate; Human CD21/CR2/C3DR HEK293 Cell Lysate (WB positive control); complement component (3d/Epstein Barr virus) receptor 2; Human C3DR Overexpression Lysate; Human CD21 Overexpression Lysate; Human CR Overexpression Lysate; Human CVID7 Overexpression Lysate; Human SLEB9 Overexpression Lysate; CR2 cell lysate
Ordering
For Research Use Only!
Host
HEK293 Cells
Form/Format
1x Sample Buffer (1x modified RIPA buffer+1x SDS loading buffer).
Modified RIPA Lysis Buffer: 50 mM Tris-HCl pH 7.4, 150 mM NaCl, 1mM EDTA, 1% Triton X-100, 0.1% SDS, 1% Sodium deoxycholate, 1mM PMSF.
Sequence Positions
962aa
Sequence
Met1-Arg971
Applicable Applications for CR2 cell lysate
Western Blot (WB)
Application Notes
WB: Use at an assay dependent dilution.
Species
Human
Recommend Usage
1. Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube.2. Re-dissolve the pellet using 200uL pure water and boil for 2-5 min.
Sequence Construction
A DNA sequence encoding the human CD21 isoform A (P20023-1) extracellular domain (Met 1-Arg 971) was expressed, with a carboxy-terminal polyhistidine tag.
Preparation Method
Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors. Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
Preparation and Storage
Store at 4 degree C for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80 degree C for up to twelve months. Avoid repeated freeze-thaw cycles.
Samples are stable for up to twelve months from date of receipt.
Related Product Information for CR2 cell lysate
The cluster of differentiation (CD) system is commonly used as cell markers in Immunophenotyping. Different kinds of cells in the immune system can be identified through the surface CD molecules associating with the immune function of the cell. There are more than 320 CD unique clusters and subclusters have been identified. Some of the CD molecules serve as receptors or ligands important to the cell through initiating a signal cascade which then alter the behavior of the cell. Some CD proteins do not take part in cell signal process but have other functions such as cell adhesion. CD21, also known as Complement component (3d/Epstein Barr virus) receptor 2 and CR2, is a member of the CD system and is a protein involved in complement system. CD21 is present on all mature B-cells and some T-cells and follicular dendritic cells. CD21 on mature B-cells form a complex called the B cell receptor complex with two other membrane proteins, CD19 and CD81. CD21 has a function in the complement system through serving as the cellular receptor specific for ligands such as C3 and C4 which can be attached to foreign macromolecules in order to remove or uptake them. This results in B-cells having enhanced response to the antigen.

This Human CD21 overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of CD21 protein from the overexpression lysate was verified.
Product Categories/Family for CR2 cell lysate
References
Zola H, et al. (2007) CD molecules 2006-human cell differentiation molecules. J Immunol Methods. 318 (1-2): 1-5.Ho IC, et al. (2009) GATA3 and the T-cell lineage: essential functions before and after T-helper-2-cell differentiation. Nat Rev Immunol. 9 (2): 125-35.Matesanz-Isabel J, et al. (2011) New B-cell CD molecules. Immunology Letters.134 (2): 104-12.Joseph M, et al. (1989) Structure and Function of the Complement Receptors, CR1 (CD35) and CR2 (CD21). Advanced in immunology. 46: 183-219.Aubry JP, et al. (1992) CD21 is a ligand for CD23 and regulates IgE production. Nature 358: 505-7.

NCBI and Uniprot Product Information

NCBI GI #
NCBI GeneID
UniProt Accession #
NCBI Official Full Name
Complement receptor type 2
NCBI Official Synonym Full Names
complement C3d receptor 2
NCBI Official Symbol
CR2
NCBI Official Synonym Symbols
CR; C3DR; CD21; CVID7; SLEB9
NCBI Protein Information
complement receptor type 2
UniProt Protein Name
Complement receptor type 2
Protein Family
UniProt Gene Name
CR2
UniProt Synonym Gene Names
C3DR; Cr2; EBV receptor
UniProt Entry Name
CR2_HUMAN

NCBI Description

This gene encodes a membrane protein, which functions as a receptor for Epstein-Barr virus (EBV) binding on B and T lymphocytes. Genetic variations in this gene are associated with susceptibility to systemic lupus erythematosus type 9 (SLEB9). Alternatively spliced transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Sep 2009]

Uniprot Description

CR2: Receptor for complement C3Dd, for the Epstein-Barr virus on human B-cells and T-cells and for HNRPU. Participates in B lymphocytes activation. Genetic variations in CR2 are associated with susceptibility to systemic lupus erythematosus type 9 (SLEB9). Systemic lupus erythematosus (SLE) is a chronic autoimmune disease with a complex genetic basis. SLE is an inflammatory, and often febrile multisystemic disorder of connective tissue characterized principally by involvement of the skin, joints, kidneys, and serosal membranes. It is thought to represent a failure of the regulatory mechanisms of the autoimmune system. Defects in CR2 are the cause of immunodeficiency, common variable, type 7 (CVID7). A primary immunodeficiency characterized by antibody deficiency, hypogammaglobulinemia, recurrent bacterial infections and an inability to mount an antibody response to antigen. The defect results from a failure of B-cell differentiation and impaired secretion of immunoglobulins; the numbers of circulating B cells is usually in the normal range, but can be low. Belongs to the receptors of complement activation (RCA) family. 4 isoforms of the human protein are produced by alternative splicing.

Protein type: Receptor, misc.; Membrane protein, integral

Chromosomal Location of Human Ortholog: 1q32

Cellular Component: plasma membrane; integral to membrane; receptor complex; external side of plasma membrane

Molecular Function: complement binding; protein homodimerization activity; transmembrane receptor activity; complement receptor activity; DNA binding

Biological Process: B cell proliferation; complement receptor mediated signaling pathway; B cell differentiation; innate immune response; immune response; complement activation, classical pathway

Disease: Systemic Lupus Erythematosus, Susceptibility To, 9; Immunodeficiency, Common Variable, 2; Immunodeficiency, Common Variable, 7

Research Articles on CR2

Similar Products

Product Notes

The CR2 cr2 (Catalog #AAA8114154) is a Cell Lysate produced from HEK293 Cells and is intended for research purposes only. The product is available for immediate purchase. The immunogen sequence is 962aa. AAA Biotech's CD21 can be used in a range of immunoassay formats including, but not limited to, Western Blot (WB). WB: Use at an assay dependent dilution. Researchers should empirically determine the suitability of the CR2 cr2 for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. The amino acid sequence is listed below: Met1-Arg97 1. It is sometimes possible for the material contained within the vial of "CD21, Cell Lysate" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.

Precautions

All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.

Disclaimer

Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.

Item has been added to Shopping Cart

If you are ready to order, navigate to Shopping Cart and get ready to checkout.

Looking for a specific manual?
Request a Manual

Request more Information

Please complete the form below and a representative will contact you as soon as possible.

Request a Manual

Please complete the form below and a representative will contact you as soon as possible.

Request a Quote

Please complete the form below and a representative will contact you as soon as possible.