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LOXL2
Mediates the post-translational oxidative deamination of lysine residues on target proteins leading to the formation of deaminated lysine (allysine). Acts as a transcription corepressor and specifically mediates deamination of trimethylated 'Lys-4' of histone H3 (H3K4me3), a specific tag for epigenetic transcriptional activation. Shows no activity against histone H3 when it is trimethylated on 'Lys-9' (H3K9me3) or 'Lys-27' (H3K27me3) or when 'Lys-4' is monomethylated (H3K4me1) or dimethylated (H3K4me2). Also mediates deamination of methylated TAF10, a member of the transcription factor IID (TFIID) complex, which induces release of TAF10 from promoters, leading to inhibition of TFIID-dependent transcription. LOXL2-mediated deamination of TAF10 results in transcriptional repression of genes required for embryonic stem cell pluripotency including POU5F1/OCT4, NANOG, KLF4 and SOX2. Involved in epithelial to mesenchymal transition (EMT) via interaction with SNAI1 and participates in repression of E-cadherin CDH1, probably by mediating deamination of histone H3. During EMT, involved with SNAI1 in negatively regulating pericentromeric heterochromatin transcription. SNAI1 recruits LOXL2 to pericentromeric regions to oxidize histone H3 and repress transcription which leads to release of heterochromatin component CBX5/HP1A, enabling chromatin reorganization and acquisition of mesenchymal traits. Interacts with the endoplasmic reticulum protein HSPA5 which activates the IRE1-XBP1 pathway of the unfolded protein response, leading to expression of several transcription factors involved in EMT and subsequent EMT induction. Involved in E-cadherin repression following hypoxia, a hallmark of EMT believed to amplify tumor aggressiveness, suggesting that it may play a role in tumor progression. When secreted into the extracellular matrix, promotes cross-linking of extracellular matrix proteins by mediating oxidative deamination of peptidyl lysine residues in precursors to fibrous collagen and elastin. Acts as a regulator of sprouting angiogenesis, probably via collagen IV scaffolding. Acts as a regulator of chondrocyte differentiation, probably by regulating expression of factors that control chondrocyte differentiation. Belongs to the lysyl oxidase family. Expressed in many tissues (PubMed:10212285). Highest expression in reproductive tissues, placenta, uterus and prostate (PubMed:10212285). In esophageal epithelium, expressed in the basal, prickle and granular cell layers (PubMed:22204712). Up-regulated in a number of cancers cells and tissues. Note: This description may include information from UniProtKB.
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| Protein type: Cell adhesion; EC 1.4.3.13; Oxidoreductase; Secreted; Secreted, signal peptide |
| Chromosomal Location of human Ortholog: 8p21.3 |
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Cellular Component:
basement membrane; chromatin; collagen-containing extracellular matrix; endoplasmic reticulum; extracellular space; membrane; nucleoplasm; nucleus
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Molecular Function:
calcium ion binding; copper ion binding; electron transfer activity; oligosaccharide binding; protein binding; protein-lysine 6-oxidase activity; scavenger receptor activity
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Biological Process:
aging; cell adhesion; collagen fibril organization; electron transport chain; endocytosis; endothelial cell migration; endothelial cell proliferation; epithelial to mesenchymal transition; heterochromatin organization; negative regulation of DNA-templated transcription; negative regulation of stem cell population maintenance; negative regulation of transcription by RNA polymerase II; peptidyl-lysine oxidation; positive regulation of chondrocyte differentiation; positive regulation of epithelial to mesenchymal transition; protein modification process; response to copper ion; response to hypoxia; sprouting angiogenesis
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Reference #:
Q9Y4K0
(UniProtKB)
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Alt. Names/Synonyms: LOR; LOR2; LOXL2; Lysyl oxidase homolog 2; lysyl oxidase like 2; lysyl oxidase related 2; lysyl oxidase-like 2; lysyl oxidase-like 2 delta e13; lysyl oxidase-like 2 protein; Lysyl oxidase-like protein 2; Lysyl oxidase-related protein 2; Lysyl oxidase-related protein WS9-14; WS9-14
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Gene Symbols: LOXL2
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Molecular weight:
86,725 Da
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Basal Isoelectric point:
5.95
Predict pI for various phosphorylation states
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Protein-Specific Antibodies, siRNAs or Recombinant Proteins from Cell Signaling Technology®
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