ADAMTS‐1 cleaves a cartilage proteoglycan, aggrecan
Kouji Kuno, Yasunori Okada, Hiroto Kawashima, Hiroyuki Nakamura, Masayuki Miyasaka, Hiroshi Ohno, Kouji Matsushima
Abstract
Kouji Kuno, Yasunori Okada, Hiroto Kawashima, Hiroyuki Nakamura, Masayuki Miyasaka, Hiroshi Ohno, Kouji Matsushima
Abstract
A disintegrin-like and metalloproteinase with thrombospondin type I motifs-1 (ADAMTS-1) is an extracellular matrix-anchored metalloproteinase. In this study we have demonstrated that ADAMTS-1 is able to cleave a major cartilage proteoglycan, aggrecan. N-terminal sequencing analysis of the cleavage product revealed that ADAMTS-1 cleaves the Glu(1871)-Leu(1872) bond within the chondroitin sulfate attachment domain of aggrecan. In addition, deletional analysis demonstrated that the C-terminal spacer region of ADAMTS-1 is necessary to degrade aggrecan. These results suggest that ADAMTS-1 may be involved in the turnover of aggrecan in vivo.
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A disintegrin-like and metalloproteinase with thrombospondin type I motifs-1 (ADAMTS-1) is an extracellular matrix-anchored metalloproteinase. In this study we have demonstrated that ADAMTS-1 is able to cleave a major cartilage proteoglycan, aggrecan. N-terminal sequencing analysis of the cleavage product revealed that ADAMTS-1 cleaves the Glu(1871)-Leu(1872) bond within the chondroitin sulfate attachment domain of aggrecan. In addition, deletional analysis demonstrated that the C-terminal spacer region of ADAMTS-1 is necessary to degrade aggrecan. These results suggest that ADAMTS-1 may be involved in the turnover of aggrecan in vivo.
Key concepts: Aggrecan, ADAMTS, Proteoglycan, Cartilage, Chemistry, Cell biology, Articular cartilage, Anatomy