title: Cloning and characterization of a fifth human lysyl oxidase isoenzyme: the third member of the lysyl oxidase-related subfamily with four scavenger receptor cysteine-rich domains.
abstract: We report the complete cDNA sequence of the human lysyl oxidase-like 4 (LOXL4) gene, a new member of the lysyl oxidase (LO) gene family. The predicted polypeptide is 756 amino acids long, including a 24-residue signal peptide. The C-terminal region contains a LO domain similar to those of LOX, LOXL, LOXL2 and LOXL3. The N-terminal region has four subregions similar to scavenger receptor cysteine-rich domains that are highly conserved with LOXL2 and LOXL3. The LOXL4 mRNA is approximately 4 kb in size and is expressed in many tissues, the highest levels among the tissues studied being in the skeletal muscle, testis and pancreas. Recombinant LOXL4 expressed in HT-1080 cells was secreted into the culture medium with no evident proteolytic processing.
authors.affiliation: The Collagen Research Unit, Biocenter Oulu and Department of Medical Biochemistry, University of Oulu, P.O. Box 5000, FIN-90014 Oulu, Finland.
authors.forename: J M
authors.initials: JM
authors.lastname: Mäki
authors.forename: H
authors.initials: H
authors.lastname: Tikkanen
authors.forename: K I
authors.initials: KI
authors.lastname: Kivirikko
mesh_terms: D000594:Amino Acid Oxidoreductases / Q000145:classification / Q000235:genetics* / Q000378:metabolism; D000595:Amino Acid Sequence; D000818:Animals; D002879:Chromosomes, Human, Pair 10; D003001:Cloning, Molecular; D003545:Cysteine / Q000235:genetics* / Q000378:metabolism; D006801:Humans; D007527:Isoenzymes / Q000145:classification / Q000235:genetics; D008297:Male; D008565:Membrane Proteins; D051379:Mice; D008969:Molecular Sequence Data; D010455:Peptides / Q000145:classification / Q000235:genetics; D017434:Protein Structure, Tertiary; D008249:Protein-Lysine 6-Oxidase; D011971:Receptors, Immunologic / Q000235:genetics / Q000378:metabolism; D018110:Receptors, Lipoprotein; D051116:Receptors, Scavenger; D051122:Scavenger Receptors, Class B; D017386:Sequence Homology, Amino Acid; D014018:Tissue Distribution; D014407:Tumor Cells, Cultured
chemical_list: D007527:Isoenzymes; D008565:Membrane Proteins; D010455:Peptides; D011971:Receptors, Immunologic; D018110:Receptors, Lipoprotein; D051116:Receptors, Scavenger; C454739:Scarb1 protein, mouse; D051122:Scavenger Receptors, Class B; D000594:Amino Acid Oxidoreductases; C445682:LOXL4 protein, human; D008249:Protein-Lysine 6-Oxidase; D003545:Cysteine