Lysosomal-associated membrane protein 1 (LAMP-1) also known as lysosome-associated membrane glycoprotein 1 and CD107a (Cluster of Differentiation 107a), is a protein that in humans is encoded by the LAMP1 gene. The human LAMP1 gene is located on the long arm (q) of chromosome 13 at region 3, band 4 (13q34). Lysosomal-associated membrane protein 1 is a glycoprotein from a family of Lysosome-associated membrane glycoproteins. The LAMP-1 glycoprotein is a type I transmembrane protein which is expressed at high or medium levels in at least 76 different normal tissue cell types. It resides primarily across lysosomal membranes, and functions to provide selectins with carbohydrate ligands. CD107a has also been shown to be a marker of degranulation on lymphocytes such as CD8+ and NK cells, and may also play a role in tumor cell differentiation and metastasis.
Background References
1. Chaudhry N et al. Lamp1 mediates lipid transport, but is dispensable for autophagy in Drosophila. Autophagy. 2022 Oct
2. Sanmarco LM et al. Gut-licensed IFNgamma(+) NK cells drive LAMP1(+)TRAIL(+) anti-inflammatory astrocytes. Nature. 2021 Feb
Western blot analysis of LAMP1 on different lysates with Mouse anti-LAMP1 antibody (HA601597) at 1/5,000 dilution.
Lane 1: A431 (Human epidermoid carcinoma skin squamous cells) Lane 2: A431 treated with PNGaseF Lane 3: HeLa (Human cervical adenocarcinoma cells) Lane 4: NIH/3T3 (Mouse fibroblasts)
Lysates/proteins at 10 µg/Lane. Exposure time: 12 seconds; ECL: K1801
Expression pattern of LAMP1 protein in A431 is consistent with the literature (PMID: 28456975).
Blocking: 5% NFDM/TBST, 1 hour at room temperature Primary antibody: HA601597, 1/5,000 in primary antibody dilution buffer (K1803), overnight at 4 ℃ Secondary antibody: Goat anti-Mouse IgG-HRP (HA1006), 1/50,000 in 5% NFDM/TBST, 1 hour at room temperature
Predicted band size: 44 kDa Observed band size: 110/44 kDa
Application: Immunohistochemistry (IHC-P)
Species: Human
Tissue: Kidney
Sample: Paraffin-embedded section