Words similar to icka

Example sentences for: icka

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Second, molecules with the Y130E mutations did not co-immunoprecipitate with the BCR [ 58 ] . A second example involves an in vitro model of histamine release in the Syk-deficient RBL-2H3 cell line [ 59 ] . When tyrosines 519 and 520 were mutated and introduced into Syk-deficient RBL-2H3 cells, these Syk molecules were capable of phosphorylation of c3b substrate in an ICKA.
BCR-induced interaction between Cbl and Syk increases the susceptibility of Syk to proteolysis [ 55 ] , possibly through enhancement of ubiquitination [ 56 ] . Expression of a dominant-negative SHP-1 phosphatase in the mature murine B cell line K46 resulted in an increase in BCR-induced Syk kinase activity as measured by C3b phosphorylation in an ICKA and enhanced BCR-induced Ca 2+fluxes [ 57 ] . It remains to be determined if interference with any of these known regulatory proteins is responsible for the dominant-positive effect.
As proof that the (K395A/3F)Syk molecule was inactive as predicted, (K395A/3F)Syk and wildtype Syk expression constructs were transfected into syk -negative DT40 cells, and activity measured by the ICKA (Figure 5).
To examine the ability of Syk from cells that expressed (K395A/3F)Syk to phosphorylate an exogenous Syk target, c3b-GST was added to the Syk ICKA (Figure 4, lower panels).
Two hypotheses were considered to explain the high level of Syk autophosphorylation in the ICKA.