产品描述
*The optimal dilutions should be determined by the end user.
*Tips:
WB: 适用于变性蛋白样本的免疫印迹检测. IHC: 适用于组织样本的石蜡(IHC-p)或冰冻(IHC-f)切片样本的免疫组化/荧光检测. IF/ICC: 适用于细胞样本的荧光检测. ELISA(peptide): 适用于抗原肽的ELISA检测.
引用格式: Affinity Biosciences Cat# DF12416, RRID:AB_2845221.
展开/折叠
LAPTM4beta; LC27; Lysosomal associated protein transmembrane 4 beta; Lysosomal associated transmembrane protein 4 beta; Lysosomal associated transmembrane protein 4B; Lysosomal protein transmembrane 4 beta;
抗原和靶标
- Q86VI4 LAP4B_HUMAN:
- Protein BLAST With
- NCBI/
- ExPASy/
- Uniprot
MTSRTRVTWPSPPRPLPVPAAAAVAFGAKGTDPAEARSSRGIEEAGPRAHGRAGREPERRRSRQQRRGGLQARRSTLLKTCARARATAPGAMKMVAPWTRFYSNSCCLCCHVRTGTILLGVWYLIINAVVLLILLSALADPDQYNFSSSELGGDFEFMDDANMCIAIAISLLMILICAMATYGAYKQRAAWIIPFFCYQIFDFALNMLVAITVLIYPNSIQEYIRQLPPNFPYRDDVMSVNPTCLVLIILLFISIILTFKGYLISCVWNCYRYINGRNSSDVLVYVTSNDTTVLLPPYDDATVNGAAKEPPPPYVSA
翻译修饰 - Q86VI4 作为底物
| Site | PTM Type | Enzyme | Source |
|---|---|---|---|
| K93 | Ubiquitination | Uniprot | |
| Y233 | Phosphorylation | Uniprot | |
| Y314 | Phosphorylation | Uniprot |
研究背景
Required for optimal lysosomal function. Blocks EGF-stimulated EGFR intraluminal sorting and degradation. Conversely by binding with the phosphatidylinositol 4,5-bisphosphate, regulates its PIP5K1C interaction, inhibits HGS ubiquitination and relieves LAPTM4B inhibition of EGFR degradation. Recruits SLC3A2 and SLC7A5 (the Leu transporter) to the lysosome, promoting entry of leucine and other essential amino acid (EAA) into the lysosome, stimulating activation of proton-transporting vacuolar (V)-ATPase protein pump (V-ATPase) and hence mTORC1 activation. Plays a role as negative regulator of TGFB1 production in regulatory T cells. Binds ceramide and facilitates its exit from late endosome in order to control cell death pathways.
Undergoes proteolytic cleavage following delivery to the lysosomes.
Ubiquitinated by NEDD4.
Endomembrane system>Multi-pass membrane protein. Late endosome membrane. Cell membrane. Cell projection. Lysosome membrane. Endosome membrane. Endosome>Multivesicular body membrane. Endosome>Multivesicular body lumen.
Homooligomer; upon reaching the lysosomes. Interacts with MCOLN1. Interacts with NEDD4; may play a role in the lysosomal sorting of LAPTM4B; enhances HGS association with NEDD4; mediates inhibition of EGFR degradation. Interacts with PIP5K1C; promotes SNX5 association with LAPTM4B; kinase activity of PIP5K1C is required; interaction is regulated by phosphatidylinositol 4,5-bisphosphate generated by PIP5K1C. Interacts with HGS; promotes HGS ubiquitination. Interacts with SNX5. Interacts with SLC3A2 AND SLC7A5; recruits SLC3A2 and SLC7A5 to lysosomes to promote leucine uptake into these organelles and is required for mTORC1 activation. Interacts with LRRC32; decreases TGFB1 production in regulatory T cells. Interacts with BECN1; competes with EGFR for LAPTM4B binding; regulates EGFR activity. Interacts with EGFR; positively correlates with EGFR activation.
Belongs to the LAPTM4/LAPTM5 transporter family.
研究领域
· Cellular Processes > Transport and catabolism > Lysosome. (View pathway)
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