CLONING OF AN INTERLEUKIN-3 RECEPTOR GENE - A MEMBER OF A DISTINCT RECEPTOR GENE FAMILY

被引:425
作者
ITOH, N
YONEHARA, S
SCHREURS, J
GORMAN, DM
MARUYAMA, K
ISHII, A
YAHARA, I
ARAI, K
MIYAJIMA, A
机构
[1] DNAX RES INST MOLEC & CELLULAR BIOL INC,MOLEC & CELLULAR BIOL RES INST,DEPT MOLEC BIOL,PALO ALTO,CA 94304
[2] TOKYO METROPOLITAN INST MED SCI,DEPT CELL BIOL,BUNKYO KU,TOKYO 113,JAPAN
关键词
D O I
10.1126/science.2404337
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Interleukin-3 (IL-3) binds to its receptor with high and low affinities, induces tyrosine phosphorylation, and promotes the proliferation and differentiation of hematopoietic cells. A binding component of the IL-3 receptor was cloned. Fibroblasts transfected with the complementary DNA bound IL-3 with a low affinity [dissociation constant (Kd) of 17.9 ± 3.6 nM]. No consensus sequence for a tyrosine kinase was present in the cytoplasmic domain. Thus, additional components are required for a functional high affinity IL-3 receptor. A sequence comparison of the IL-3 receptor with other cytokine receptors (erythropoietin, IL-4, IL-6, and the β chain IL-2 receptor) revealed a common motif of a distinct receptor gene family.
引用
收藏
页码:324 / 327
页数:4
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