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LAMP1 expression on the surface of tumor cells has been observed for a number of different cancer types, particularly in highly metastatic cancers such as pancreatic cancer, [18] [19] colon cancer [16] [17] and melanoma. [16] [17] The structure of LAMP1 correlates with differentiation [8] [20] and metastatic potential [11] of tumor cells as it is thought to help mediate cell-cell adhesion [17] and migration. [15] [18] Indeed, the adhesion of some cancer cells to the extracellular matrix is mediated by interactions between LAMP1 and LAMP2 and E-selectin and galectins, with the LAMPs serving as ligands for the cell-adhesion molecules. [17] Lee N, Wang WC, Fukuda M (Nov 1990). "Granulocytic differentiation of HL-60 cells is associated with increase of poly-N-acetyllactosamine in Asn-linked oligosaccharides attached to human lysosomal membrane glycoproteins". The Journal of Biological Chemistry. 265 (33): 20476–87. doi: 10.1016/S0021-9258(17)30529-X. PMID 2243101. LAMP1 and LAMP2 glycoproteins comprise 50% of all lysosomal membrane proteins, [6] and are thought to be responsible in part for maintaining lysosomal integrity, pH and catabolism. [6] [11] The expression of LAMP1 and LAMP2 glycoproteins are linked, as deficiencies in LAMP1 gene will lead to increased expression of LAMP2 glycoproteins. [11] The two are therefore thought to share similar functions in vivo. [6] However, this makes the determining the precise function of LAMP1 difficult, because while the LAMP1 deficient phenotype is little different than the wild type due to LAMP2 up regulation, [6] [11] the LAMP1/ LAMP2 double deficient phenotype leads to embryonic lethality. [11] You want to make sure your lighting is positioned at varying heights. If not, your lamps might create an unflattering circle that directs all light towards the middle of the room. This can make the room feel smaller.

Residing primarily across lysosomal membranes, these glycoproteins consist of a large, highly glycosylated end with N-linked carbon chains on the luminal side of the membrane, and a short C-terminal tail [6] exposed to the cytoplasm. [8] The extracytoplasmic region contains a hinge-like structure which can form disulphide bridges homologous to those observed in human immunoglobulin A. [8] Other characteristics of the structure of the LAMP-1 glycoproteins include: Immunofluorescence staining of HeLa Cells with antibody to reveal lysosomal LAMP1 in red and vimentin containing intermediate filaments in green. Nuclear DNA is seen in blue. Antibodies and image courtesy EnCor Biotechnology Inc. To help you improve the lighting in your home, we have everything from ceiling to floor lamps, as well as all of the in-betweens. A lamp here, a lamp there Viitala J, Carlsson SR, Siebert PD, Fukuda M (Jun 1988). "Molecular cloning of cDNAs encoding lamp A, a human lysosomal membrane glycoprotein with apparent Mr approximately equal to 120,000". Proceedings of the National Academy of Sciences of the United States of America. 85 (11): 3743–7. Bibcode: 1988PNAS...85.3743V. doi: 10.1073/pnas.85.11.3743. PMC 280294. PMID 3131762.Rohrer J, Schweizer A, Russell D, Kornfeld S (Feb 1996). "The targeting of Lamp1 to lysosomes is dependent on the spacing of its cytoplasmic tail tyrosine sorting motif relative to the membrane". The Journal of Cell Biology. 132 (4): 565–76. doi: 10.1083/jcb.132.4.565. PMC 2199866. PMID 8647888. Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine. 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).

Polylactosamine attachments which protect the glyocoprotein from degradation by lysosomal proteases [10] Significant quantities of polylactosaminoglycan and sialic acid to traverse the trans- Golgi cisternae. [10] Although the LAMP1 glycoproteins primarily reside across lysosomal membranes, in certain cases they can be expressed across the plasma membrane of the cell. [11] Expression of LAMP1 at the cell surface can occur due to lysosomal fusion with the cell membrane. [12] Cell surface expression of LAMP1 can serve as a ligand for selectins [13] [14] and help mediate cell- cell adhesion. [15] Accordingly, cell surface expression of LAMP1 is seen in cells with migratory or invasive functions, such as cytotoxic T cells, platelets and macrophages. [16] Cell surface expression of LAMP1 and LAMP2 is also often seen in cancer cells, [16] [17] particularly cancers with high metastatic potential, such as colon carcinoma and melanoma, [16] and has been shown to correlate with their metastatic potential. [11] Role in cancer [ edit ] a b c Carlsson SR, Roth J, Piller F, Fukuda M (Dec 1988). "Isolation and characterization of human lysosomal membrane glycoproteins, h-lamp-1 and h-lamp-2. Major sialoglycoproteins carrying polylactosaminoglycan". The Journal of Biological Chemistry. 263 (35): 18911–9. doi: 10.1016/S0021-9258(18)37369-1. PMID 3143719.Raposo G, Moore M, Innes D, Leijendekker R, Leigh-Brown A, Benaroch P, Geuze H (Oct 2002). "Human macrophages accumulate HIV-1 particles in MHC II compartments". Traffic. 3 (10): 718–29. doi: 10.1034/j.1600-0854.2002.31004.x. PMID 12230470. S2CID 7055266. a b c d e f g h Andrejewski N, Punnonen EL, Guhde G, Tanaka Y, Lüllmann-Rauch R, Hartmann D, von Figura K, Saftig P (Apr 1999). "Normal lysosomal morphology and function in LAMP-1-deficient mice". The Journal of Biological Chemistry. 274 (18): 12692–701. doi: 10.1074/jbc.274.18.12692. PMID 10212251. Consider whether the lamp needs to be plugged in at all times or if it can be placed after being charged. Lamps that don’t require a power connection provide more flexibility in placement throughout the room and are often best for ambiance instead of utilitarian lighting.

a b c Jensen SS, Aaberg-Jessen C, Christensen KG, Kristensen B (2013). "Expression of the lysosomal-associated membrane protein-1 (LAMP-1) in astrocytomas". International Journal of Clinical and Experimental Pathology. 6 (7): 1294–1305. PMC 3693194. PMID 23826410. PDBe-KB provides an overview of all the structure information available in the PDB for Human Lysosome-associated membrane glycoprotein 1 Lysosomal-associated membrane protein 1 is a glycoprotein from a family of Lysosome-associated membrane glycoproteins. [5] The LAMP-1 glycoprotein is a type I transmembrane protein [6] which is expressed at high or medium levels in at least 76 different normal tissue cell types. [7] It resides primarily across l ysosomal membranes, [8] and functions to provide selectins with carbohydrate ligands. [5] CD107a has also been shown to be a marker of degranulation on lymphocytes such as CD8+ and NK cells, [9] and may also play a role in tumor cell differentiation and metastasis. Storage & organisation Furniture Textiles Kitchenware & tableware Kitchens Lighting Decoration Rugs, mats & flooring Beds & mattresses Baby & children Smart home Bathroom products Laundry & cleaning Plants & plant pots Home electronics Home improvement Outdoor living Food & beverages Christmas Shop Shop by room Furuta K, Yang XL, Chen JS, Hamilton SR, August JT (May 1999). "Differential expression of the lysosome-associated membrane proteins in normal human tissues". Archives of Biochemistry and Biophysics. 365 (1): 75–82. doi: 10.1006/abbi.1999.1147. PMID 10222041.Mattei MG, Matterson J, Chen JW, Williams MA, Fukuda M (May 1990). "Two human lysosomal membrane glycoproteins, h-lamp-1 and h-lamp-2, are encoded by genes localized to chromosome 13q34 and chromosome Xq24-25, respectively". The Journal of Biological Chemistry. 265 (13): 7548–51. doi: 10.1016/S0021-9258(19)39148-3. PMID 2332441.