LAPTM4B Antibody - #DF12416

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Product: LAPTM4B Antibody
Catalog: DF12416
Description: Rabbit polyclonal antibody to LAPTM4B
Application: WB IHC IF/ICC
Reactivity: Human, Mouse, Rat
Mol.Wt.: 24 kDa, 37 kDa; 35kD(Calculated).
Uniprot: Q86VI4
RRID: AB_2845221

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Related Downloads
MS Report
HPLC Report
MSDS
Data Sheet
COA
Protocols
WB Handbook
IHC Protocol
IF/ICC Protocol

Product Info

Source:
Rabbit
Application:
WB 1:500-1:2000, IHC 1:50-1:200, IF/ICC 1:100-1:500
*The optimal dilutions should be determined by the end user.
*Tips:

WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.

Reactivity:
Human,Mouse,Rat
Clonality:
Polyclonal
Specificity:
LAPTM4B Antibody detects endogenous levels of total LAPTM4B.
RRID:
AB_2845221
Cite Format: Affinity Biosciences Cat# DF12416, RRID:AB_2845221.
Conjugate:
Unconjugated.
Purification:
The antiserum was purified by peptide affinity chromatography using SulfoLink™ Coupling Resin (Thermo Fisher Scientific).
Storage:
Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol. Store at -20 °C. Stable for 12 months from date of receipt.
Alias:

Fold/Unfold

LAPTM4beta; LC27; Lysosomal associated protein transmembrane 4 beta; Lysosomal associated transmembrane protein 4 beta; Lysosomal associated transmembrane protein 4B; Lysosomal protein transmembrane 4 beta;

Immunogens

Immunogen:
Uniprot:

Q86VI4(LAP4B_HUMAN) >>Visit HPA database.

Gene(ID):
LAPTM4B(55353)
Sequence:
MTSRTRVTWPSPPRPLPVPAAAAVAFGAKGTDPAEARSSRGIEEAGPRAHGRAGREPERRRSRQQRRGGLQARRSTLLKTCARARATAPGAMKMVAPWTRFYSNSCCLCCHVRTGTILLGVWYLIINAVVLLILLSALADPDQYNFSSSELGGDFEFMDDANMCIAIAISLLMILICAMATYGAYKQRAAWIIPFFCYQIFDFALNMLVAITVLIYPNSIQEYIRQLPPNFPYRDDVMSVNPTCLVLIILLFISIILTFKGYLISCVWNCYRYINGRNSSDVLVYVTSNDTTVLLPPYDDATVNGAAKEPPPPYVSA

PTMs - Q86VI4 As Substrate

Site PTM Type Enzyme
K93 Ubiquitination
Y233 Phosphorylation
Y314 Phosphorylation

Research Backgrounds

Function:

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.

PTMs:

Undergoes proteolytic cleavage following delivery to the lysosomes.

Ubiquitinated by NEDD4.

Subcellular Location:

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.

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionSubcellular location
Subunit Structure:

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.

Family&Domains:

Belongs to the LAPTM4/LAPTM5 transporter family.

Research Fields

· Cellular Processes > Transport and catabolism > Lysosome.   (View pathway)

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