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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] Mane SM, Marzella L, Bainton DF, Holt VK, Cha Y, Hildreth JE, August JT (Jan 1989). "Purification and characterization of human lysosomal membrane glycoproteins". Archives of Biochemistry and Biophysics. 268 (1): 360–78. doi: 10.1016/0003-9861(89)90597-3. PMID 2912382.

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. 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 Künzli BM, Berberat PO, Zhu ZW, Martignoni M, Kleeff J, Tempia-Caliera AA, Fukuda M, Zimmermann A, Friess H, Büchler MW (Jan 2002). "Influences of the lysosomal associated membrane proteins (Lamp-1, Lamp-2) and Mac-2 binding protein (Mac-2-BP) on the prognosis of pancreatic carcinoma". Cancer. 94 (1): 228–239. doi: 10.1002/cncr.10162. PMID 11815981. S2CID 12702437. poly-N-acetyllactosamine groups which are involved in interactions with selectin and other glycan-binding proteins [11]

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Chang MH, Karageorgos LE, Meikle PJ (2003). "CD107a (LAMP-1) and CD107b (LAMP-2)". Journal of Biological Regulators and Homeostatic Agents. 16 (2): 147–51. PMID 12144129. 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] 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: Laferte S, Dennis JW (Apr 1989). "Purification of two glycoproteins expressing beta 1-6 branched Asn-linked oligosaccharides from metastatic tumour cells". The Biochemical Journal. 259 (2): 569–576. doi: 10.1042/bj2590569. PMC 1138546. PMID 2719668. 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.

a b c d e Carlsson SR, Fukuda M (Dec 1989). "Structure of human lysosomal membrane glycoprotein 1. Assignment of disulfide bonds and visualization of its domain arrangement". The Journal of Biological Chemistry. 264 (34): 20526–31. doi: 10.1016/S0021-9258(19)47094-4. PMID 2584229. Ohno H, Stewart J, Fournier MC, Bosshart H, Rhee I, Miyatake S, Saito T, Gallusser A, Kirchhausen T, Bonifacino JS (Sep 1995). "Interaction of tyrosine-based sorting signals with clathrin-associated proteins". Science. 269 (5232): 1872–5. Bibcode: 1995Sci...269.1872O. doi: 10.1126/science.7569928. PMID 7569928. 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). 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. Schleutker J, Haataja L, Renlund M, Puhakka L, Viitala J, Peltonen L, Aula P (Nov 1991). "Confirmation of the chromosomal localization of human lamp genes and their exclusion as candidate genes for Salla disease". Human Genetics. 88 (1): 95–7. doi: 10.1007/BF00204936. PMID 1959930. S2CID 31520394.Carlsson SR, Fukuda M (Dec 1989). "Structure of human lysosomal membrane glycoprotein 1. Assignment of disulfide bonds and visualization of its domain arrangement". The Journal of Biological Chemistry. 264 (34): 20526–31. doi: 10.1016/S0021-9258(19)47094-4. PMID 2584229. Howe CL, Granger BL, Hull M, Green SA, Gabel CA, Helenius A, Mellman I (Oct 1988). "Derived protein sequence, oligosaccharides, and membrane insertion of the 120-kDa lysosomal membrane glycoprotein (lgp120): identification of a highly conserved family of lysosomal membrane glycoproteins". Proceedings of the National Academy of Sciences of the United States of America. 85 (20): 7577–81. Bibcode: 1988PNAS...85.7577H. doi: 10.1073/pnas.85.20.7577. PMC 282235. PMID 3174652.

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. Höning S, Sandoval IV, von Figura K (Aug 1998). "A di-leucine-based motif in the cytoplasmic tail of LIMP-II and tyrosinase mediates selective binding of AP-3". The EMBO Journal. 17 (5): 1304–14. doi: 10.1093/emboj/17.5.1304. PMC 1170479. PMID 9482728. 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. Sawada R, Jardine KA, Fukuda M (Apr 1993). "The genes of major lysosomal membrane glycoproteins, lamp-1 and lamp-2. 5'-flanking sequence of lamp-2 gene and comparison of exon organization in two genes". The Journal of Biological Chemistry. 268 (12): 9014–9022. doi: 10.1016/S0021-9258(18)52972-0. PMID 8517882. Instead, you want to work with light at different levels. For example, you can have one or two table lamps in your window at mid-level, then a wall lamp placed in a higher position, together with a floor lamp that ends up somewhere in-between. That way, the light is more dynamic, making your room look bigger and more interesting. Indoor lamps need darkness to shine

Use height when deciding on indoor lighting

A properly lit room should have between five to seven light sources. And ideally, they should be a mix of different types of lights, positioned throughout the room at varied heights and. By combining floor lamps, table lamps and wall lamps, it'll be easier for you to create perfect lighting and help your room come to life. Use height when deciding on indoor lighting 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. PDBe-KB provides an overview of all the structure information available in the PDB for Human Lysosome-associated membrane glycoprotein 1 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.