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Store at –20°C
Phospho-Src Family (Tyr416) Antibody
#2101
Orders n 877-616-CELL (2355)
[email protected]
Support n 877-678-TECH (8324)
[email protected]
Web n www.cellsignal.com
rev. 12/16/15
For Research Use Only. Not For Use In Diagnostic Procedures.
Applications
Species Cross-Reactivity*
Molecular Wt.
Source
W
Endogenous
H, M, R, (C, X)
60 kDa
Rabbit**
Storage: Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM
NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C.
Do not aliquot the antibody.
*Species cross-reactivity is determined by western blot.
Background: The Src family of protein tyrosine kinases
(including Src, Lyn, Fyn, Yes, Lck, Blk, Hck, etc.) are
important in the regulation of growth and differentiation of
eukaryotic cells (1). Src activity is regulated by tyrosine
phosphorylation at two sites with opposing effects.
Phosphorylation of Tyr416 in the activation loop of the
kinase domain upregulates enzyme activity. Phosphorylation
of Tyr527 in the carboxy-terminal tail by Csk renders the
enzyme less active (2).
Lyn is a member of the Src family that is predominantly
expressed in hematopoietic cells (3). Lyn participates in
signaling from multiple cell surface receptors such as the B
cell antigen receptor (BCR) and CD40 (4).
Lck is essential for T-lymphocyte activation and differentiation (5,6). Phosphorylation of the carboxy-terminal Tyr505
downregulates Lck activity, while phosphorylation at Tyr394
leads to an increase in Lck activity (7).
© 2015 Cell Signaling Technology, Inc.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
Specificity/Sensitivity: Phospho-Src Family (Tyr416)
Antibody detects endogenous levels of Src only when
phosphorylated at tyrosine 416. The antibody may crossreact with other Src family members (Lyn, Fyn, Lck, Yes and
Hck) when phosphorylated at equivalent sites. It does not
cross-react with Src phosphorylated at tyrosine 527. It may
cross react with phosphorylated RTKs.
COLO 201
kDa
165
**Anti-rabbit secondary antibodies must be used to
detect this antibody.
NIH/3T3
105
76
PhosphoSrc Family
(Tyr416)
57
46.5
Recommended Antibody Dilutions:
Western blotting
1:1000
For application specific protocols please see the web
page for this product at www.cellsignal.com.
Please visit www.cellsignal.com for a complete listing
of recommended companion products.
37.5
165
105
76
57
Src
IgG
46.5
37.5
+
–
–
–
–
–
+
–
+
–
–
+
–
0
–
–
2
–
–
5
–
l Phosphatase
PDGF (min)
IP: v-Src Antibody
Western blot analysis of extracts from serum-starved COLO
201 cells, v-Src antibody immunoprecipitates from COLO
201 cells and PDGF-treated NIH/3T3 cells, treated with l
phosphatase as indicated, using Phospho-Src (Tyr416)
Antibody (upper) or v-Src antibody (lower).
Source/Purification: Polyclonal antibodies are produced
by immunizing animals with a synthetic phosphopeptide
corresponding to residues surrounding Tyr419 of human
Src. Antibodies are purified by protein A and peptide affinity
chromatography.
Background References:
(1) Thomas, S.M. and Brugge, J.S. (1997) Annu. Rev. Cell
Dev. Biol. 13, 513–609.
(2) Hunter, T. (1987) Cell 49, 1-4.
(3) Yamanshi,, Y. et al. (1989) Proc. Natl. Acad. Sci. USA
86, 6538–6542.
(4) Yamanashi, Y. et al. (1991) Science 251, 192–194.
(5) Molina, T.J. et al. (1992) Nature 357, 161–164.
(6) Straus, D.B. et al. (1992) Cell 70, 585–593.
IMPORTANT: For western blots, incubate membrane
with diluted antibody in 5% w/v BSA, 1X TBS, 0.1%
Tween® 20 at 4°C with gentle shaking, overnight.
(7) Chow, L.M. et al. (1993) Nature 365, 156–160.
Tween is a registered trademark of ICI Americas, Inc.
Applications Key:
W—Western
Species Cross-Reactivity Key:
IP—Immunoprecipitation
H—human
M—mouse
Dg—dog Pg—pig Sc—S. cerevisiae Ce—C. elegans
IHC—Immunohistochemistry
R—rat
Hr—Horse
Hm—hamster
ChIP—Chromatin Immunoprecipitation
Mk—monkey
All—all species expected
Mi—mink
C—chicken
IF—Immunofluorescence
F—Flow cytometry
Dm—D. melanogaster X—Xenopus
Z—zebrafish
Species enclosed in parentheses are predicted to react based on 100% homology.
E-P—ELISA-Peptide
B—bovine