Characteristics, Structure, and Biological Role of Stefins (type-1 cystatins) of Human, Mammal, and Parasite Origin

The majority of lysosomal cysteine cathepsins are ubiquitously expressed enzymes. However, some of them differ in their specific cell or tissue distribution and substrate specificity, suggesting their involvement in determining normal cellular processes, as well as pathologies. Their proteolytic act...

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Main Authors: Vito Turk, Dušan Turk, Iztok Dolenc, Veronika Stoka
Format: Article
Language:English
Published: Slovenian Chemical Society 2019-02-01
Series:Acta Chimica Slovenica
Subjects:
Online Access:https://journals.matheo.si/index.php/ACSi/article/view/4639
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author Vito Turk
Dušan Turk
Iztok Dolenc
Veronika Stoka
author_facet Vito Turk
Dušan Turk
Iztok Dolenc
Veronika Stoka
author_sort Vito Turk
collection DOAJ
description The majority of lysosomal cysteine cathepsins are ubiquitously expressed enzymes. However, some of them differ in their specific cell or tissue distribution and substrate specificity, suggesting their involvement in determining normal cellular processes, as well as pathologies. Their proteolytic activities are potentially harmful if uncontrolled. Therefore, living organisms have developed several regulatory mechanisms such as endogenous protein inhibitors of the cystatin family, including the group of small cytosolic proteins, the stefins. The main focus of this review is stefins of various origins and their properties, structure, and mechanism of interaction with their target enzymes. Furthermore, oligomerization and fibrillogenesis in stefins and/or cystatins provide insights into conformational diseases. The present status of the knowledge in this field and current trends might contribute to identifying novel therapeutic targets and approaches to treat various diseases.
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spelling doaj.art-e211c4f4b1264a649a13a9ac248234a52022-12-22T01:53:20ZengSlovenian Chemical SocietyActa Chimica Slovenica1318-02071580-31552019-02-0166151710.17344/acsi.2018.4639630Characteristics, Structure, and Biological Role of Stefins (type-1 cystatins) of Human, Mammal, and Parasite OriginVito Turk0Dušan Turk1Iztok Dolenc2Veronika Stoka3Jožef Stefan Institute Jožef Stefan International Postgraduate SchoolJožef Stefan Institute Centre of Excellence CIPKEBIPJožef Stefan InstituteJožef Stefan Institute Jožef Stefan International Postgraduate SchoolThe majority of lysosomal cysteine cathepsins are ubiquitously expressed enzymes. However, some of them differ in their specific cell or tissue distribution and substrate specificity, suggesting their involvement in determining normal cellular processes, as well as pathologies. Their proteolytic activities are potentially harmful if uncontrolled. Therefore, living organisms have developed several regulatory mechanisms such as endogenous protein inhibitors of the cystatin family, including the group of small cytosolic proteins, the stefins. The main focus of this review is stefins of various origins and their properties, structure, and mechanism of interaction with their target enzymes. Furthermore, oligomerization and fibrillogenesis in stefins and/or cystatins provide insights into conformational diseases. The present status of the knowledge in this field and current trends might contribute to identifying novel therapeutic targets and approaches to treat various diseases.https://journals.matheo.si/index.php/ACSi/article/view/4639mammalian stefinsparasite stefinscystatinscysteine cathepsinsmechanism of interactionoligomerization
spellingShingle Vito Turk
Dušan Turk
Iztok Dolenc
Veronika Stoka
Characteristics, Structure, and Biological Role of Stefins (type-1 cystatins) of Human, Mammal, and Parasite Origin
Acta Chimica Slovenica
mammalian stefins
parasite stefins
cystatins
cysteine cathepsins
mechanism of interaction
oligomerization
title Characteristics, Structure, and Biological Role of Stefins (type-1 cystatins) of Human, Mammal, and Parasite Origin
title_full Characteristics, Structure, and Biological Role of Stefins (type-1 cystatins) of Human, Mammal, and Parasite Origin
title_fullStr Characteristics, Structure, and Biological Role of Stefins (type-1 cystatins) of Human, Mammal, and Parasite Origin
title_full_unstemmed Characteristics, Structure, and Biological Role of Stefins (type-1 cystatins) of Human, Mammal, and Parasite Origin
title_short Characteristics, Structure, and Biological Role of Stefins (type-1 cystatins) of Human, Mammal, and Parasite Origin
title_sort characteristics structure and biological role of stefins type 1 cystatins of human mammal and parasite origin
topic mammalian stefins
parasite stefins
cystatins
cysteine cathepsins
mechanism of interaction
oligomerization
url https://journals.matheo.si/index.php/ACSi/article/view/4639
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AT iztokdolenc characteristicsstructureandbiologicalroleofstefinstype1cystatinsofhumanmammalandparasiteorigin
AT veronikastoka characteristicsstructureandbiologicalroleofstefinstype1cystatinsofhumanmammalandparasiteorigin