Acts as an inhibitor of BTK tyrosine kinase activity, thereby playing a role in B-cell development. Down-regulates BTK kinase activity, leading to interference with BTK-mediated calcium mobilization and NF-kappa-B-driven transcription.
We found that ibtk_ is phosphorylated at serines 87 and 90 by pkc on bcr engagement;this phosphorylation causes the dissociation of the btk:ibtk_ complex and allows btk to translocate to the plasma membrane.
We found that ibtk_ is phosphorylated at serines 87 and 90 by pkc on bcr engagement;this phosphorylation causes the dissociation of the btk:ibtk_ complex and allows btk to translocate to the plasma membrane.