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LAMP-1/CD107a Antibody [Alexa Fluor® 750]

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Product Details

Summary
Reactivity Hu, Mu, RtSpecies Glossary
Applications WB, ICC/IF, IHC
Clonality
Polyclonal
Host
Rabbit
Conjugate
Alexa Fluor 750

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LAMP-1/CD107a Antibody [Alexa Fluor® 750] Summary

Immunogen
Synthetic peptide corresponding to residues C K(407) R S H A G Y Q T I(416) of human LAMP1.
Localization
Type I membrane protein. Lysosomal. This protein shuttles between lysosomes, endosomes, and the plasma membrane.
Marker
Late Endosome Marker
Specificity
LAMP1 - Lysosome Marker
Isotype
IgG
Clonality
Polyclonal
Host
Rabbit
Gene
LAMP1
Purity
Immunogen affinity purified
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • Immunocytochemistry/ Immunofluorescence
  • Immunohistochemistry
  • Immunohistochemistry-Paraffin
  • Western Blot
Application Notes
Optimal dilution of this antibody should be experimentally determined.

Reactivity Notes

Mouse reactivity reported in scientific literature (PMID: 22453828 ). Rat reactivity reported in scientific literature (PMID: 22544351).

Packaging, Storage & Formulations

Storage
Store at 4C in the dark.
Buffer
50mM Sodium Borate
Preservative
0.05% Sodium Azide
Purity
Immunogen affinity purified

Alternate Names for LAMP-1/CD107a Antibody [Alexa Fluor® 750]

  • 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.

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Bioinformatics

Gene Symbol LAMP1