Structure of a Cys25-->Ser mutant of human cathepsin S.
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Turkenburg JP, Lamers MB, Brzozowski AM, Wright LM, Hubbard RE, Sturt SL, Williams DH
Structure of a Cys25-->Ser mutant of human cathepsin S.
Acta Crystallogr D Biol Crystallogr. 2002 Mar;58(Pt 3):451-5. Epub 2002 Feb 21.
- PubMed ID
- 11856830 [ View in PubMed]
- Abstract
Cathepsin S (EC 3.4.22.27), a cysteine proteinase of the papain superfamily, plays a critical role in the generation of a major histocompatibility complex (MHC) class II restricted T-cell response by antigen-presenting cells. Therefore, selective inhibition of this enzyme may be useful in modulating class II restricted T-cell responses in immune-related disorders such as rheumatoid arthritis, multiple sclerosis and extrinsic asthma. The three-dimensional structure at 2.2 A resolution of the active-site Cys25-->Ser mutant presented here in an unliganded state provides further insight useful for the design of selective enzyme inhibitors.