カテプシンH(Cathepsin H)は、ヒトではCTSH遺伝子でコードされるタンパク質である[5][6]。
概要 CTSH, PDBに登録されている構造 ...
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この遺伝子でコードされるタンパク質は、パパイン様プロテアーゼであり、リソソームタンパク質の全体的な分解に重要なシステインプロテアーゼである。1つのタンパク質前駆体から生成する重鎖と軽鎖がジスルフィド結合で繋がった二量体で構成される。ペプチダーゼC1ファミリーに分類され、アミノペプチダーゼ及びエンドペプチダーゼの両方の作用を持つ。この遺伝子の発現量の増加は、前立腺癌の悪性進行と相関している。異なるアイソフォームをコードする2つの転写バリアントが見られる[6]。
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