Recombinant Human CD19/Leu-12 Protein (Fc Tag)(Active) | PKSH032206

Recombinant Human CD19/Leu-12 Protein (Fc Tag)(Active) | PKSH032206 | Gentaur US, UK & Europe Disrtribition

Synonyms: B-Lymphocyte Antigen CD19; B-Lymphocyte Surface Antigen B4; Differentiation Antigen CD19; T-Cell Surface Antigen Leu-12; CD19; CVID3

Active Protein: Active protein

Activity: Recombinant Human CD19 is produced by our Mammalian expression system and the target gene encoding Pro20-Lys291 is expressed with a Fc tag at the C-terminus.

Protein Construction: Recombinant Human CD19 is produced by our Mammalian expression system and the target gene encoding Pro20-Lys291 is expressed with a Fc tag at the C-terminus.

Fusion Tag: C-Fc

Species: Human

Expressed Host: Human Cells

Shipping: This product is provided as lyophilized powder which is shipped with ice packs.

Purity: > 80 % as determined by reducing SDS-PAGE.

Endotoxin: < 1.0 EU per µg as determined by the LAL method.

Stability and Storage: Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.

Molecular Mass: 57.3 kDa

Formulation: Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, 1%BSA, 0.05%NaN3, pH 7.4.

Reconstitution: Please refer to the printed manual for detailed information.

Background: CD19 is a single-pass type I membrane protein containing 2 Ig-like C2-type (immunoglobulin-like) domains. CD19 is expressed on follicular dendritic cells and B cells. In fact; it is present on B cells from earliest recognizable B-lineage cells during development to B-cell blasts but is lost on maturation to plasma cells. CD19 primarily acts as a B cell co-receptor in conjunction with CD21 and CD81. Upon activation; the cytoplasmic tail of CD19 becomes phosphorylated; which leads to binding by Src-family kinases and recruitment of PI-3 kinase. CD19 Assembles with the antigen receptor of B lymphocytes in order to decrease the threshold for antigen receptor-dependent stimulation. Defects in CD19 are the cause of immunodeficiency common variable type 3 (CVID3) which is a primary immunodeficiency characterized by antibody deficiency; hypogammaglobulinemia; recurrent bacterial infections and an inability to mount an antibody response to antigen.

Research Area: immunology, Stem cells