PMID- 10477597 OWN - NLM STAT- MEDLINE DCOM- 19991004 LR - 20211203 IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 163 IP - 6 DP - 1999 Sep 15 TI - TNF-mediated activation of the stress-activated protein kinase pathway: TNF receptor-associated factor 2 recruits and activates germinal center kinase related. PG - 3279-85 AB - TNF-induced activation of stress activated protein kinases (SAPKs, Jun NH2-terminal kinases) requires TNF receptor associated factor 2 (TRAF2). TRAF2 is a potent activator of a 95-kDa serine/threonine kinase termed germinal center kinase related (GCKR, also referred to as KHS1), which signals activation of the SAPK pathway. Consistent with a role for GCKR in TNF- induced SAPK activation, a kinase-inactive mutant of GCKR is a dominant negative inhibitor of TRAF2-induced SAPK activation. Here we show that TRAF2 interacts with GCKR. This interaction depended upon the TRAF domain of TRAF2 and the C-terminal 150 aa of GCKR. The full activation of GCKR by TRAF2 required the TRAF2 RING finger domain. TNF treatment of a T cell line, Jurkat, increased both GCRK and SAPK activity and enhanced the coimmunoprecipitation of GCKR with TRAF2. Similar results were found with the B cell line HS-Sultan. These findings are consistent with a model whereby TNF signaling results in the recruitment and activation of GCKR by TRAF2, which leads to SAPK activation. FAU - Shi, C S AU - Shi CS AD - B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Disease, Bethesda, MD 20892, USA. FAU - Leonardi, A AU - Leonardi A FAU - Kyriakis, J AU - Kyriakis J FAU - Siebenlist, U AU - Siebenlist U FAU - Kehrl, J H AU - Kehrl JH LA - eng PT - Journal Article PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Germinal Center Kinases) RN - 0 (NF-kappa B) RN - 0 (Proteins) RN - 0 (Receptors, Tumor Necrosis Factor) RN - 0 (TNF Receptor-Associated Factor 2) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 2.7.11.17 (Calcium-Calmodulin-Dependent Protein Kinases) RN - EC 2.7.11.24 (JNK Mitogen-Activated Protein Kinases) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) SB - IM MH - Amino Acid Sequence MH - Calcium-Calmodulin-Dependent Protein Kinases/*metabolism MH - Catalytic Domain/immunology MH - Cell Line MH - Enzyme Activation/genetics/immunology MH - Germinal Center/*enzymology MH - Germinal Center Kinases MH - Humans MH - JNK Mitogen-Activated Protein Kinases MH - Jurkat Cells MH - *Mitogen-Activated Protein Kinases MH - Molecular Sequence Data MH - NF-kappa B/metabolism MH - Protein Biosynthesis MH - Protein Serine-Threonine Kinases/biosynthesis/chemistry/*metabolism MH - Proteins/genetics/metabolism/*physiology MH - Receptors, Tumor Necrosis Factor/genetics/*physiology MH - Sequence Deletion MH - Signal Transduction/genetics/*immunology MH - TNF Receptor-Associated Factor 2 MH - Tumor Necrosis Factor-alpha/genetics/*physiology EDAT- 1999/09/08 00:00 MHDA- 1999/09/08 00:01 CRDT- 1999/09/08 00:00 PHST- 1999/09/08 00:00 [pubmed] PHST- 1999/09/08 00:01 [medline] PHST- 1999/09/08 00:00 [entrez] AID - ji_v163n6p3279 [pii] PST - ppublish SO - J Immunol. 1999 Sep 15;163(6):3279-85.