PMID- 10528161 OWN - NLM STAT- MEDLINE DCOM- 19991119 LR - 20211203 IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 163 IP - 9 DP - 1999 Nov 1 TI - Cutting edge: KAP10, a novel transmembrane adapter protein genetically linked to DAP12 but with unique signaling properties. PG - 4651-4 AB - Transmembrane adapter proteins are a class of molecules that mediate signals from an extracellular receptor to the cytoplasm of the cell. We have cloned a novel transmembrane adapter protein called KAP10, a approximately 10-kDa protein that is encoded within 100 bp of the DAP12 locus on human chromosome 19. KAP10 is predominantly expressed in immune cells, including NK cells, T cells, and monocytes. We show that KAP10, unlike other transmembrane adapter proteins, binds phosphatidylinositol-3 kinase following phosphorylation of a cytoplasmic YINM motif, which results in activation of Akt. In addition, we identify KAP10 as being able to bind the adapter protein Grb2. Based on our data, we suggest that this molecule is involved in stimulation and costimulation in cells of both myeloid and lymphoid origin. FAU - Chang, C AU - Chang C AD - Division of Immunology, Research Group in Human Reproductive Immunobiology, Department of Pathology, University of Cambridge, United Kingdom. FAU - Dietrich, J AU - Dietrich J FAU - Harpur, A G AU - Harpur AG FAU - Lindquist, J A AU - Lindquist JA FAU - Haude, A AU - Haude A FAU - Loke, Y W AU - Loke YW FAU - King, A AU - King A FAU - Colonna, M AU - Colonna M FAU - Trowsdale, J AU - Trowsdale J FAU - Wilson, M J AU - Wilson MJ LA - eng SI - GENBANK/AF172929 SI - GENBANK/AF172930 GR - Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (CD4 Antigens) RN - 0 (HCST protein, human) RN - 0 (Hcst protein, mouse) RN - 0 (Immune Sera) RN - 0 (Membrane Proteins) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Receptors, Immunologic) RN - 0 (TYROBP protein, human) RN - EC 2.7.11.1 (AKT1 protein, human) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) SB - IM MH - Adaptor Proteins, Signal Transducing MH - Amino Acid Sequence MH - Animals MH - Base Sequence MH - CD4 Antigens/immunology MH - Cell Line MH - Cell Lineage/genetics/immunology MH - Enzyme Activation MH - Genetic Linkage/immunology MH - Hematopoietic Stem Cells/metabolism MH - Humans MH - Immune Sera/metabolism MH - Jurkat Cells MH - Lymphoid Tissue/cytology/metabolism MH - Membrane Proteins/biosynthesis/*genetics/immunology/*metabolism MH - Mice MH - Molecular Sequence Data MH - Phosphatidylinositol 3-Kinases/metabolism MH - Protein Binding/immunology MH - Protein Serine-Threonine Kinases/metabolism MH - *Proto-Oncogene Proteins MH - Proto-Oncogene Proteins c-akt MH - Receptors, Immunologic/*genetics/metabolism MH - Signal Transduction/genetics/*immunology MH - U937 Cells EDAT- 1999/10/21 00:00 MHDA- 1999/10/21 00:01 CRDT- 1999/10/21 00:00 PHST- 1999/10/21 00:00 [pubmed] PHST- 1999/10/21 00:01 [medline] PHST- 1999/10/21 00:00 [entrez] AID - ji_v163n9p4651 [pii] PST - ppublish SO - J Immunol. 1999 Nov 1;163(9):4651-4.