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KIT P10721

肥大/干细胞生长因子受体 Kit (SCFR) (EC 2.7.10.1) (斑驳性状蛋白) (PBT) (原癌基因 c-Kit) (酪氨酸蛋白激酶 Kit) (p145 c-kit) (v-kit Hardy-Zuckerman 4 猫肉瘤病毒癌基因同源物) (CD抗原 CD117)

蛋白质信息 (UniProt)

肥大/干细胞生长因子受体 Kit (SCFR) (EC 2.7.10.1) (斑驳性状蛋白) (PBT) (原癌基因 c-Kit) (酪氨酸蛋白激酶 Kit) (p145 c-kit) (v-kit Hardy-Zuckerman 4 猫肉瘤病毒癌基因同源物) (CD抗原 CD117)

P10721

功能描述

酪氨酸蛋白激酶,作为细胞因子KITLG/SCF的细胞表面受体,在调节细胞存活和增殖、造血、干细胞维持、配子发生、肥大细胞发育、迁移和功能以及黑色素生成中发挥重要作用。响应KITLG/SCF结合,KIT可以激活多种信号通路。磷酸化PIK3R1、PLCG1、SH2B2/APS和CBL。通过磷酸化磷脂酰肌醇3-激酶的调节亚基PIK3R1,激活AKT1信号通路。激活的KIT还通过GRB2传递信号,并激活RAS、RAF1以及MAP激酶MAPK1/ERK2和/或MAPK3/ERK1。促进STAT家族成员STAT1、STAT3、STAT5A和STAT5B的激活。PLCG1的激活导致细胞信号分子二酰甘油和1,4,5-三磷酸肌醇的产生。KIT信号受到蛋白磷酸酶的调节,并受受体的快速内化和降解调节。激活的KIT促进蛋白磷酸酶PTPN6/SHP-1和PTPRU以及转录因子STAT1、STAT3、STAT5A和STAT5B的磷酸化。促进PIK3R1、CBL、CRK(亚型Crk-II)、LYN、MAPK1/ERK2和/或MAPK3/ERK1、PLCG1、SRC和SHC1的磷酸化。 {ECO:0000269|PubMed:10397721, ECO:0000269|PubMed:12444928, ECO:0000269|PubMed:12511554, ECO:0000269|PubMed:12878163, ECO:0000269|PubMed:17904548, ECO:0000269|PubMed:19265199, ECO:0000269|PubMed:21135090, ECO:0000269|PubMed:21640708, ECO:0000269|PubMed:7520444, ECO:0000269|PubMed:9528781}。

组织特异性

[Isoform 3]: In testis, detected in spermatogonia in the basal layer and in interstitial Leydig cells but not in Sertoli cells or spermatocytes inside the seminiferous tubules (at protein level) (PubMed:20601678). Expression is maintained in ejaculated spermatozoa (at protein level) (PubMed:20601678).

亚细胞定位

[Isoform 1]: Cell membrane; Single-pass type I membrane protein.; SUBCELLULAR LOCATION: [Isoform 2]: Cell membrane; Single-pass type I membrane protein.; SUBCELLULAR LOCATION: [Isoform 3]: Cytoplasm

关键词

3D-structure Alternative splicing ATP-binding Cell membrane Cytoplasm Direct protein sequencing Disease variant Disulfide bond Glycoprotein Immunoglobulin domain