Products
Proteins and Peptides
Proteins and peptidesAccessory Reagents & Controls
Accessory reagents & controlsBiochemicals
BiochemicalsFeatured product
Step up your high-throughput screening with our 384-well SimpleStep ELISA kits.
Learn more about all our product ranges with our product overviews.
Resources
Featured events
Make new connections at our global events.
Support
Our programs
New Lab Program
Get a head start with our exclusive new lab discount. Enjoy 20% off and free shipping for three months.
New Biotech Program
Just starting out? Get 15% off and free shipping to your lab for six months.
Product promise
Peace of mind that all products perform as stated.
Product reviews
Leave reviews, get rewarded and help your community.
Trial program
Try untested species and applications to earn money off your next order.
CD21
Function
Receptor for complement C3d and for HNRNPU. Participates in B lymphocytes activation.
Sequence similarities
Belongs to the receptors of complement activation (RCA) family.
Tissue specificity
B-lymphocytes.
Cellular localization
- Cell membrane
- Single-pass type I membrane protein
Alternative names
- Complement receptor type 2
- Cr2
- Complement C3d receptor
- Cr2
Database links
Target type
Proteins
Primary research area
Immunology & Infectious Disease
Other research areas
- Immuno-oncology
Molecular weight
112995Da