3X0V
Structure of L-lysine oxidase
Summary for 3X0V
| Entry DOI | 10.2210/pdb3x0v/pdb |
| Descriptor | L-lysine oxidase, FLAVIN-ADENINE DINUCLEOTIDE, 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID, ... (4 entities in total) |
| Functional Keywords | oxidative deamination, secreted protein, oxidoreductase |
| Biological source | Trichoderma viride |
| Total number of polymer chains | 2 |
| Total formula weight | 124473.81 |
| Authors | Sano, T.,Uchida, Y.,Amano, M.,Kawaguchi, T.,Kondo, H.,Inagaki, K.,Imada, K. (deposition date: 2014-10-22, release date: 2015-04-08, Last modification date: 2023-11-08) |
| Primary citation | Amano, M.,Mizuguchi, H.,Sano, T.,Kondo, H.,Shinyashiki, K.,Inagaki, J.,Tamura, T.,Kawaguchi, T.,Kusakabe, H.,Imada, K.,Inagaki, K. Recombinant expression, molecular characterization and crystal structure of antitumor enzyme, l-lysine alpha-oxidase from Trichoderma viride. J.Biochem., 157:549-559, 2015 Cited by PubMed Abstract: L-Lysine α-oxidase (LysOX) from Trichoderma viride is a homodimeric 112 kDa flavoenzyme that catalyzes the oxidative deamination of L-lysine to form α-keto-ε-aminocaproate. LysOX severely inhibited growth of cancer cells but showed relatively low cytotoxicity for normal cells. We have determined the cDNA nucleotide sequence encoding LysOX from T. viride. The full-length cDNA consists of 2,119 bp and encodes a possible signal peptide (Met1-Arg77) and the mature protein (Ala78-Ile617). The LysOX gene have been cloned and heterologously expressed in Streptomyces lividans TK24 with the enzyme activity up to 9.8 U/ml. The enzymatic properties of the purified recombinant LysOX, such as substrate specificity and thermal stability, are same as those of native LysOX. The crystal structure of LysOX at 1.9 Å resolution revealed that the overall structure is similar to that of snake venom L-amino acid oxidase (LAAO), and the residues involved in the interaction with the amino or carboxy group of the substrate are structurally conserved. However, the entrance and the inner surface structures of the funnel to the active site, as well as the residues involved in the substrate side-chain recognition, are distinct from LAAOs. These structural differences well explain the unique substrate specificity of LysOX. PubMed: 25648943DOI: 10.1093/jb/mvv012 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (1.9 Å) |
Structure validation
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