LAMP-1/CD107a Antibody (CL4489) - BSA Free

Western Blot: LAMP-1/CD107a Antibody (CL4489) [NBP2-59053] - Analysis in human cell line RT-4.

Immunohistochemistry-Paraffin: LAMP-1/CD107a Antibody (CL4489) [NBP2-59053] - Staining of human skeletal muscle shows only weak cytoplasmic positivity in muscle fibers.

Immunohistochemistry-Paraffin: LAMP-1/CD107a Antibody (CL4489) [NBP2-59053] - Staining of human cervix shows granular cytoplasmic immunoreactivity in squamous epithelium cells.

Immunohistochemistry-Paraffin: LAMP-1/CD107a Antibody (CL4489) [NBP2-59053] - Staining of human kidney shows strong granular cytoplasmic positivity in renal tubules and glomeruli.

Immunohistochemistry-Paraffin: LAMP-1/CD107a Antibody (CL4489) [NBP2-59053] - Staining of human rectum shows granular cytoplasmic immunoreactivity in glandular cells and in lymphoid cells.

Immunohistochemistry-Paraffin: LAMP-1/CD107a Antibody (CL4489) [NBP2-59053] - Staining of human endometrium shows granular cytoplasmic positivity in glandular cells.

Immunohistochemistry-Paraffin: LAMP-1/CD107a Antibody (CL4489) [NBP2-59053] - Staining of human testis shows cytoplasmic positivity in cells in seminiferous tubules.

• Reactivity: Hu
• Applications: WB, IHC
• Clone: CL4489
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: Unconjugated
• Format: BSA Free

LAMP-1/CD107a Antibody (CL4489) - BSA Free Summary

• Description: Novus Biologicals Mouse LAMP-1/CD107a Antibody (CL4489) - BSA Free (NBP2-59053) is a monoclonal antibody validated for use in IHC and WB. All Novus Biologicals antibodies are covered by our 100% guarantee.
• Immunogen: This antibody was developed using a synthetic peptide derived from P11279, with the exact immunogen sequence remaining proprietary.
• Isotype: IgG2b
• Clonality: Monoclonal
• Host: Mouse
• Gene: LAMP1
• Purity: Protein A purified

Applications/Dilutions

• Dilutions:
  • Immunohistochemistry 1:500 - 1:1000
  • Immunohistochemistry-Paraffin 1:500 - 1:1000
  • Western Blot 1 ug/ml
• Application Notes: For IHC-Paraffin, HIER pH 6 retrieval is recommended.

Packaging, Storage & Formulations

• Storage: Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
• Buffer: PBS (pH 7.2) and 40% Glycerol
• Preservative: 0.02% Sodium Azide
• Purity: Protein A purified

Alternate Names for LAMP-1/CD107a Antibody (CL4489) - BSA Free

• CD107 antigen-like family member A
• CD107a antigen
• CD107a
• LAMP1
• LAMP-1
• LAMPA
• LGP120
• lysosomal-associated membrane protein 1
• lysosome-associated membrane glycoprotein 1
• Lysosome-associated membrane protein 1

Background

LAMP-1 (lysosome-associated membrane protein 1), also known as CD107a (cluster of differentiation 107a), is a major component of lysosomal membranes that plays an important role in lysosomal biogenesis, autophagy, and cholesterol metabolism (1). LAMP-1 is a type I transmembrane glycoprotein that is expressed on plasma membranes and the membranes of endosomes, autolysosomes, and lysosomes (1,2). Additionally, LAMP-1/CD107a is a commonly used marker for natural killer (NK) cell degranulation (3). LAMP-1 and another lysosomal-associated membrane protein, LAMP-2, together make up about half of all lysosome membrane proteins (1). Additionally, LAMP-1 has a role in presenting carbohydrate ligands to selectins (2). Human LAMP-1 protein is comprised of 417 amino acids (aa) with a theoretical molecular weight of 44.8 kDa; however, glycosylation can increase the molecular weight upwards of 120 kDa (1, 4). Structurally, LAMP-1 protein contains a large luminal/extracellular domain (29-382 aa), a helical transmembrane domain (383-405 aa), and a short cytoplasmic tail (406-417 aa) (1,2). Additionally, the protein has many N- and O-linked glycosylation sites which helps with stability in the membrane (1,2).

LAMP-1 plays an important role in autophagy-mediated ATP-release during apoptosis where lysosomes containing intracellular ATP migrate to the plasma membrane and, during exocytosis, LAMP-1 is exposed to the cell surface (5). Studies have found that knockdown of LAMP-1 blocks the ATP release from the cell (5). Furthermore, an absence of LAMP-1 and LAMP-2 leads to an accumulation of lysosomal cholesterol (6). Lysosomal membrane dysfunction or defects has also been associated with disease development (6,7). For example, one feature of pancreatitis is autophagy impairment which is caused by lysosomal dysfunction and a corresponding decrease in lysosomal-membrane associated proteins LAMP-1 and LAMP-2 (7).

References

1. Eskelinen E. L. (2006). Roles of LAMP-1 and LAMP-2 in lysosome biogenesis and autophagy. Molecular aspects of medicine, 27(5-6), 495-502. https://doi.org/10.1016/j.mam.2006.08.005

2. Cheng, X. T., Xie, Y. X., Zhou, B., Huang, N., Farfel-Becker, T., & Sheng, Z. H. (2018). Revisiting LAMP1 as a marker for degradative autophagy-lysosomal organelles in the nervous system. Autophagy, 14(8), 1472-1474. https://doi.org/10.1080/15548627.2018.1482147

3. Krzewski, K., & Coligan, J. E. (2012). Human NK cell lytic granules and regulation of their exocytosis. Frontiers in immunology, 3, 335. https://doi.org/10.3389/fimmu.2012.00335

4. Uniprot (P11279)

5. Wang, Y., Martins, I., Ma, Y., Kepp, O., Galluzzi, L., & Kroemer, G. (2013). Autophagy-dependent ATP release from dying cells via lysosomal exocytosis. Autophagy, 9(10), 1624-1625. https://doi.org/10.4161/auto.25873

6. Schwake, M., Schr0der, B., & Saftig, P. (2013). Lysosomal membrane proteins and their central role in physiology. Traffic (Copenhagen, Denmark), 14(7), 739-748. https://doi.org/10.1111/tra.12056

7. Gukovsky, I., Pandol, S. J., Mareninova, O. A., Shalbueva, N., Jia, W., & Gukovskaya, A. S. (2012). Impaired autophagy and organellar dysfunction in pancreatitis. Journal of gastroenterology and hepatology, 27 Suppl 2(Suppl 2), 27-32. https://doi.org/10.1111/j.1440-1746.2011.07004.x

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Bioinformatics

• Gene Symbol: LAMP1