Cathepsin H is a protein that in humans is encoded by the CTSHgene.[5][6]
The protein encoded by this gene is a cysteine cathepsin, a lysosomalcysteine protease important in the overall degradation of lysosomal proteins. It is composed of a dimer of disulfide-linked heavy and light chains, both produced from a single protein precursor. The encoded protein, which belongs to the peptidase C1 protein family, can act both as an aminopeptidase and as an endopeptidase. Increased expression of this gene has been correlated with malignant progression of prostate tumors. Two transcript variants encoding different isoforms have been found for this gene.[6]
Järvinen M, Rinne A (1983). "Human spleen cysteineproteinase inhibitor. Purification, fractionation into isoelectric variants and some properties of the variants". Biochim. Biophys. Acta. 708 (2): 210–7. doi:10.1016/0167-4838(82)90222-9. PMID6184075.
Uusitalo H, Hiltunen A, Söderström M, et al. (2001). "Expression of cathepsins B, H, K, L, and S and matrix metalloproteinases 9 and 13 during chondrocyte hypertrophy and endochondral ossification in mouse fracture callus". Calcif. Tissue Int. 67 (5): 382–90. doi:10.1007/s002230001152. PMID11136537. S2CID31004810.
Brasch F, Ten Brinke A, Johnen G, et al. (2002). "Involvement of cathepsin H in the processing of the hydrophobic surfactant-associated protein C in type II pneumocytes". Am. J. Respir. Cell Mol. Biol. 26 (6): 659–70. doi:10.1165/ajrcmb.26.6.4744. PMID12034564.
Jenko S, Dolenc I, Guncar G, et al. (2003). "Crystal structure of Stefin A in complex with cathepsin H: N-terminal residues of inhibitors can adapt to the active sites of endo- and exopeptidases". J. Mol. Biol. 326 (3): 875–85. doi:10.1016/S0022-2836(02)01432-8. PMID12581647.
Nagai A, Terashima M, Harada T, et al. (2003). "Cathepsin B and H activities and cystatin C concentrations in cerebrospinal fluid from patients with leptomeningeal metastasis". Clin. Chim. Acta. 329 (1–2): 53–60. doi:10.1016/S0009-8981(03)00023-8. PMID12589965.
1nb3: Crystal structure of stefin A in complex with cathepsin H: N-terminal residues of inhibitors can adapt to the active sites of endo-and exopeptidases
1nb5: Crystal structure of stefin A in complex with cathepsin H
8pch: CRYSTAL STRUCTURE OF PORCINE CATHEPSIN H DETERMINED AT 2.1 ANGSTROM RESOLUTION: LOCATION OF THE MINI-CHAIN C-TERMINAL CARBOXYL GROUP DEFINES CATHEPSIN H AMINOPEPTIDASE FUNCTION