PMID- 10590261 OWN - NLM STAT- MEDLINE DCOM- 20000124 LR - 20201208 IS - 0953-8178 (Print) IS - 0953-8178 (Linking) VI - 11 IP - 12 DP - 1999 Dec TI - Isolation and characterization of a novel HS1 SH3 domain binding protein, HS1BP3. PG - 1957-64 AB - We have isolated a novel gene, HS1BP3, which encodes an HS1 binding protein. Analysis of HS1BP3 cDNA indicates several potentially important segments, including a PX domain, a leucine zipper, immunoreceptor tyrosine-based inhibitory motif-like motifs and proline-rich regions. HS1BP3 associates with HS1 proteins in vivo as confirmed by immunoprecipitation in B and T cell lines. HS1BP3 preferentially associates with the HS1 SH3 domains rather than with other SH3 molecules, suggesting a role of HS1BP3 as an HS1 signaling mediator. Overexpression of mutant HS1BP3 protein in T cell lines results in decreased IL-2 production. Our data suggest a novel role for HS1BP3 in lymphocyte activation. FAU - Takemoto, Y AU - Takemoto Y AD - Institute of Immunology, Syntex-Roche, 2669 Yamazaki, Noda, Chiba 278, Japan. FAU - Furuta, M AU - Furuta M FAU - Sato, M AU - Sato M FAU - Kubo, M AU - Kubo M FAU - Hashimoto, Y AU - Hashimoto Y LA - eng SI - GENBANK/AJ132192 PT - Journal Article PL - England TA - Int Immunol JT - International immunology JID - 8916182 RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (Blood Proteins) RN - 0 (Carrier Proteins) RN - 0 (HCLS1 protein, human) RN - 0 (Interleukin-2) SB - IM MH - Adaptor Proteins, Signal Transducing MH - Amino Acid Sequence MH - Animals MH - Base Sequence MH - Blood Proteins/*metabolism MH - Carrier Proteins/chemistry/*isolation & purification/physiology MH - Cell Line MH - Interleukin-2/biosynthesis MH - Lymphocyte Activation MH - Mice MH - Molecular Sequence Data MH - *src Homology Domains EDAT- 1999/12/11 00:00 MHDA- 1999/12/11 00:01 CRDT- 1999/12/11 00:00 PHST- 1999/12/11 00:00 [pubmed] PHST- 1999/12/11 00:01 [medline] PHST- 1999/12/11 00:00 [entrez] AID - 10.1093/intimm/11.12.1957 [doi] PST - ppublish SO - Int Immunol. 1999 Dec;11(12):1957-64. doi: 10.1093/intimm/11.12.1957.