منابع مشابه
Incorporation of copper into lysyl oxidase.
Lysyl oxidase is a copper-dependent enzyme involved in extracellular processing of collagens and elastin. Although it is known that copper is essential for the functional activity of the enzyme, there is little information on the incorporation of copper. In the present study we examined the insertion of copper into lysyl oxidase using 67Cu in cell-free transcription/translation assays and in no...
متن کاملStructural and catalytic properties of copper in lysyl oxidase.
The spectral and catalytic properties of the copper cofactor in highly purified bovine aortic lysyl oxidase have been examined. As isolated, various preparations of purified lysyl oxidase are associated with 5-9 loosely bound copper atoms per molecule of enzyme which are removed by dialysis against EDTA. The enzyme also contains 0.99 +/- 0.10 g atom of tightly bound copper per 32-kDa monomer wh...
متن کاملCopper, lysyl oxidase, and extracellular matrix protein cross-linking.
Protein-lysine 6-oxidase (lysyl oxidase) is a cuproenzyme that is essential for stabilization of extracellular matrixes, specifically the enzymatic cross-linking of collagen and elastin. A hypothesis is proposed that links dietary copper levels to dynamic and proportional changes in lysyl oxidase activity in connective tissue. Although nutritional copper status does not influence the accumulati...
متن کاملMechanisms of copper incorporation into human ceruloplasmin.
Ceruloplasmin is a multicopper oxidase essential for normal iron homeostasis. To elucidate the mechanisms of copper incorporation into this protein, holoceruloplasmin biosynthesis was examined by immunoblot analysis and (64)Cu metabolic labeling of Chinese hamster ovary cells transfected with cDNAs encoding wild-type or mutant ceruloplasmin. This analysis reveals that the incorporation of coppe...
متن کاملLOXL2 (lysyl oxidase-like 2)
The LOXL2 gene is located on chromosome 8p21.2p21.3 (Jourdan-Le Saux et al., 1998). It is composed of fourteen exons and thirteen introns, distributed through approximately 107 kb of genomic DNA (Fong et al., 2007). Two transcripts of sizes 3.6 kb and 4.9 kb have been reported, with the smaller transcript much more abundant and resulting from three possible termination sites located 690 bp, 740...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1997
ISSN: 0264-6021,1470-8728
DOI: 10.1042/bj3270283