PTK2(Protein Tyrosine Kinase 2),也称为FAK(Focal Adhesion Kinase),是一种非受体型酪氨酸激酶,在细胞黏附、迁移、增殖和存活等生物学过程中发挥关键作用。它主要定位于细胞膜上的黏着斑(focal adhesion),通过与整合素和其他信号分子相互作用,调控细胞与细胞外基质的连接。PTK2的生物学功能包括激活下游信号通路如RAS-MAPK和PI3K-AKT,从而影响细胞运动、生长和抗凋亡能力。突变或异常表达会导致PTK2功能失调,与多种癌症(如乳腺癌、结肠癌)的侵袭和转移密切相关,还可能影响心血管疾病和纤维化疾病的发展。PTK2过表达通常促进肿瘤细胞的迁移和侵袭,而降低表达则可能抑制这些恶性行为,但过度抑制可能影响正常组织的修复功能。PTK2属于FAK亚家族,该家族成员(如PTK2B)均具有高度保守的激酶结构域,参与细胞骨架重组和机械信号转导。这一家族的共性是通过磷酸化底物蛋白传递外界机械或化学刺激,协调细胞对外部环境的响应。
This gene encodes a cytoplasmic protein tyrosine kinase which is found concentrated in the focal adhesions that form between cells growing in the presence of extracellular matrix constituents. The encoded protein is a member of the FAK subfamily of protein tyrosine kinases but lacks significant sequence similarity to kinases from other subfamilies. Activation of this gene may be an important early step in cell growth and intracellular signal transduction pathways triggered in response to certain neural peptides or to cell interactions with the extracellular matrix. Several transcript variants encoding different isoforms have been found for this gene, but the full-length natures of only three of them have been determined. [provided by RefSeq, Dec 2010]
这个基因编码被发现集中在细胞外基质成分的存在下生长的细胞之间形成的粘着斑细胞质蛋白酪氨酸激酶。所编码的蛋白质是蛋白酪氨酸激酶的FAK亚科的成员,但缺乏显著的序列相似性,从其他亚家族激酶。该基因的活化可能是在细胞生长和响应于某些神经肽或与胞外基质的细胞之间的相互作用引起的细胞内信号转导途径的一个重要的早期步骤。几个转录变体编码不同同种型已发现这种基因,但只有其中的三个全长性质已经确定。 [由RefSeq的,2010年12月提供]
PTK2基因(以及对应的蛋白质)的细胞分布位置:
PTK2基因的本体(GO)信息:
名称 |
---|
4012 ErbB signaling pathway [PATH:hsa04012] |
4370 VEGF signaling pathway [PATH:hsa04370] |
4151 PI3K-Akt signaling pathway [PATH:hsa04151] |
4810 Regulation of actin cytoskeleton [PATH:hsa04810] |
4510 Focal adhesion [PATH:hsa04510] |
4670 Leukocyte transendothelial migration [PATH:hsa04670] |
4062 Chemokine signaling pathway [PATH:hsa04062] |
4360 Axon guidance [PATH:hsa04360] |
5200 Pathways in cancer [PATH:hsa05200] |
5202 Transcriptional misregulation in cancers [PATH:hsa05202] |
5205 Proteoglycans in cancer [PATH:hsa05205] |
5222 Small cell lung cancer [PATH:hsa05222] |
5100 Bacterial invasion of epithelial cells [PATH:hsa05100] |
5146 Amoebiasis [PATH:hsa05146] |
名称 |
---|
Apoptosis |
Apoptotic cleavage of cellular proteins |
Apoptotic execution phase |
Axon guidance |
Cell-Cell communication |
DCC mediated attractive signaling |
Developmental Biology |
EPH-Ephrin signaling |
EPHA-mediated growth cone collapse |
EPHB-mediated forward signaling |
Fcgamma receptor (FCGR) dependent phagocytosis |
GRB2:SOS provides linkage to MAPK signaling for Integrins |
Hemostasis |
Immune System |
Innate Immune System |
Integrin alphaIIb beta3 signaling |
NCAM signaling for neurite out-growth |
Netrin mediated repulsion signals |
Netrin-1 signaling |
p130Cas linkage to MAPK signaling for integrins |
Platelet activation, signaling and aggregation |
Platelet Aggregation (Plug Formation) |
Programmed Cell Death |
Regulation of actin dynamics for phagocytic cup formation |
RHO GTPase Effectors |
RHO GTPases Activate WASPs and WAVEs |
Signal regulatory protein (SIRP) family interactions |
Signaling by Rho GTPases |
Signaling by VEGF |
VEGFA-VEGFR2 Pathway |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Liver carcinoma | 0.211897292 | 9 | 0 | BeFree_CTD_human_GAD_LHGDN_RGD |
Squamous cell carcinoma | 0.126534468 | 7 | 0 | BeFree_CTD_human_LHGDN |
Glioblastoma | 0.125991584 | 5 | 0 | BeFree_CTD_human_LHGDN |
Neoplasm Invasiveness | 0.12 | 1 | 0 | CTD_human |
Rheumatoid Arthritis | 0.12 | 1 | 0 | CTD_human |
Neoplasm Metastasis | 0.08842463 | 22 | 0 | BeFree_LHGDN_RGD |
Ischemia | 0.080271442 | 2 | 0 | BeFree_RGD |
Hypertensive disease | 0.08 | 2 | 0 | RGD |
Nephritis | 0.08 | 1 | 0 | RGD |
Left Ventricular Hypertrophy | 0.08 | 1 | 0 | RGD |
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