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Glossary: L

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L
LAM:
stands for lipoarabinomannan; a microbial product recognized by Toll-like receptor 2 (TLR-2)
LAT:
stands for linker for activation of T cells; an adaptor; Connections Map Component -- Linker of activated T cells
LBP:
stands for lipopolysaccharide-binding protein; a serum protein involved presentation of microbial lipopolysaccharides to immune system
LC:
stands for liquid chromatography
Lck:
a Src family protein tyrosine kinase; Connections Map Component -- Lck
LCR:
stands for locus control region; a region of DNA that enhances the expression of groups of genes through long-range interactions, often mediated by chromosomal looping
LEF-1:
stands for lymphoid enhancer factor 1; a transcription factor; Connections Map Component -- Lymphoid-enhancing factor 1
LFA-1:
stands for lymphocyte function-associated antigen-1; also known as alphaLβ2; an integrin
LGIC:
stands for ligand-gated ion channel
LIF:
stands for leukemia inhibitory factor, a secreted protein that contributes to glial differentiation
LIMK:
stands for LIM kinase; a serine, threonine kinase containing the protein interaction domain known as LIM; mammalian LIMK1 and DLIMK1, the Drosophila homolog, have two LIM domains and a PDZ domain and are activated by type II bone morphogenic protein (BMP) receptors
LMB1:
stands for leptomycin B; a pharmacological inhibitor of the exportin CRM1
LMP1:
stands for Epstein-Barr virus latent membrane protein 1
Lnk:
the founding member of a family of adaptor proteins; Connections Map Component -- APS
LOH:
stands for loss of heterozygosity
LPA:
stands for lysophosphatidic acid; a water-soluble phospholipid; Connections Map Component -- Lysophosphophatidic acid
LPR1:
stands for lipid phosphatase-related protein 1; an integral membrane protein involved in filopodium formation
LPS:
stands for lipopolysaccharide; microbial LPS can activate Toll-like receptors (TLRs)
LRAT:
stands for lecithin retinol acyl transferase; an enzyme that esterifies Vitamin A
LRP:
stands for low density lipoprotein (LDL) receptor-related protein; members of this family can serve as nutrient receptors or participate in signaling cascades; Connections Map Component -- Low-density lipoprotein receptor-related protein
LRR:
stands for leucine-rich repeat
LTA:
stands for lipoteichoic acid; a microbial product that can activate Toll-like receptors (TLRs)
LTD:
stands for long-term depression; a prolonged inhibition of neuronal synaptic activity
LTP:
stands for long-term potentiation; a prolonged enhancement of neuronal synaptic activity
LTR:
stands for long terminal repeat; a DNA sequence that enhances transcription

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