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Projects / Programmes source: ARIS

Tissue proteinases and their inhibitors: Characterisation, genetic engineering and structure-function relationship

Research activity

Code Science Field Subfield
1.05.00  Natural sciences and mathematics  Biochemistry and molecular biology   

Code Science Field
P004  Natural sciences and mathematics  Biochemistry, Metabolism 
Keywords
cathepsins, cysteine proteases, cystatins, thyroglobulin type-1 domain, antigen presentation, equistatin, thyropin, invariant chain of MHC class-II molecules, inhibitors, cathepsin L, cathepsin S, cathepsin H, cathepsin B, cancer
Evaluation (rules)
source: COBISS
Researchers (16)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  12047  PhD Tadeja Bevec  Pharmacy  Researcher  2000 - 2001  36 
2.  15970  Andreja Doberšek  Biochemistry and molecular biology  Researcher  1996 - 2001  25 
3.  00449  PhD Iztok Dolenc  Biochemistry and molecular biology  Researcher  2000 - 2001  110 
4.  06416  PhD Marko Dolinar  Biochemistry and molecular biology  Researcher  2000 - 2001  341 
5.  10502  PhD Nataša Kopitar Jerala  Biochemistry and molecular biology  Researcher  1996 - 2001  239 
6.  17110  Louisa Johanna Kroon Žitko    Researcher  1996 - 2001  22 
7.  13598  PhD Robert Kuhelj  Biochemistry and molecular biology  Researcher  1996 - 2001  37 
8.  03422  PhD Brigita Lenarčič  Biochemistry and molecular biology  Researcher  1999 - 2001  338 
9.  06056  PhD Metka Renko  Biochemistry and molecular biology  Researcher  2000 - 2001  99 
10.  14829  PhD Veronika Stoka  Biochemistry and molecular biology  Researcher  1996 - 2001  237 
11.  15969  Ivica Štefe  Biochemistry and molecular biology  Researcher  1996 - 2001  36 
12.  05234  Mojca Trstenjak Prebanda  Biochemistry and molecular biology  Researcher  2000 - 2001  64 
13.  07561  PhD Boris Turk  Biochemistry and molecular biology  Researcher  1996 - 2001  1,037 
14.  04988  PhD Dušan Turk  Biochemistry and molecular biology  Researcher  2000 - 2001  622 
15.  01085  PhD Vito Turk  Biochemistry and molecular biology  Head  1998 - 2001  1,490 
16.  03368  PhD Eva Žerovnik  Biochemistry and molecular biology  Researcher  2000 - 2001  389 
Organisations (1)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  90,742 
Abstract
The proposed project deals with biochemical studies of cysteine proteinases, mostly of human origin, with emphasys on cathepsins B, H, L, S and C and cruzipain from T. cruzi. Studies were performed on natural and recombinant proteins. Refolding of recombinant sulphonated procathepsin S from 6M urea by kinetic stopped-flow measurements were studies. pH-induced conformational transitions of the inhibitory propeptide of human cathepsin L contribute to further understanding of the mechanism of zymogen activation at acidic pH. Porcine spleen cathepsin H was isolated, its crystal structure was determined and its aminopeptidase activity explained. Based on known kinetics and structural data the revised definition of substrate binding sites of papain-like cysteine proteinases was proposed. The oligomeric nature of human cathepsin C was investigated. Studies on the role of cathepsins and their inhibitors stefins in prognosis, diagnosis and cancer therapy were continued. The folding of stefin A and B under denaturating conditions were studied. The discovery of invariant chain (Ii) of MHC class-II molecules and equistatin was essential for discovery of thyropins, a new superfamily of protein inhibitors of cysteine proteinases. Colorado potato beetle larve on equistatin-coted potato leaves were strongly retarded in their growth indicating high potential in biotechnology.
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