SHB (SH2 homology protein in B/ beta -cells) is a 55-59kD cytoplasmic adaptor protein that serves as a link between phosphotyrosine residues and downstream signaling pathways.
SHB is ubiquitously expressed, and binds tyrosine kinase receptors such as FGFR1, VEGFR2, and the TCR (zeta -chain) following their activation.
It is highly modular, and through a variety of motifs, is able to bind multiple, structurally unrelated proteins that collectively generate a signal transduction network.
Human SHB is 509aa in length.
It contains an N-terminal Pro-rich region that binds SH3 domain-containing proteins (aa19-45), a central PTB domain that binds select aa motifs, and a C-terminal SH2 domain that interacts with phosphotyrosines (aa410-504).
There are at least nine utilized phosphorylation sites.
There are two isoform variants.
One is 66-68kD in size, and possesses an 87aa Pro-rich N-terminal extension.
This MW may increase to 77-80kD following posttranslational processing.
A second variant shows an 18 aa substitution for aa280-509.
Over aa2-128, human SHB shares 91% aa identity with mouse SHB.
Applications:Suitable for use in Western Blot and ELISA.
Other applications not tested.
Recommended Dilution:Western Blot: 1:500-1:2000ELISA: 1:10,000Optimal dilutions to be determined by the researcher.
Storage and Stability:May be stored at 4°C for short-term only.
Aliquot to avoid repeated freezing and thawing.
Store at -20°C.
Aliquots are stable for 12 months after receipt.
For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
仕様
Size:30ul
Host:rabbit
Source Antibody:human
Grade:Affinity Purified
Purity:Purified by immunoaffinity chromatography.
Form:Supplied as a liquid in PBS, 0.5% BSA, 0.02% sodium azide, 50% glycerol.
Specificity:Recognizes endogenous levels of human Shb (phospho Tyr246). Species Crossreactivity: mouse
Isotype:IgG
Calc Applications Abbrev:E WB
Calc Crossreactivity:Hu Mo
Immunogen:Synthetic peptide corresponding to human Shb around the phosphorylation site of Y246.