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Activation Profiles of Human Kallikrein-Related Peptidases by Proteases of the Thrombostasis Axis

Title: Activation Profiles of Human Kallikrein-Related Peptidases by Proteases of the Thrombostasis Axis.
Name(s): Yoon, Hyesook, 1975-, author
Blaber, Sachiko, author
Evans, D., author
Trim, Julie, author
Juliano, Maria, author
Scarisbrick, Isobel, author
Blaber, Michael, author
Type of Resource: text
Genre: Text
Issuance: serial
Date Issued: 2008
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: The human kallikrein-related peptidases (KLKs) comprise 15 members (KLK1-15) and are the single largest family of serine proteases. The KLKs are utilized, or proposed, as clinically important biomarkers and therapeutic targets of interest in cancer and neurodegenerative disease. All KLKs appear to be secreted as inactive pro-forms (pro-KLKs) that are activated extracellularly by specific proteolytic release of their N-terminal pro-peptide. This processing is a key step in the regulation of KLK function. Much recent work has been devoted to elucidating the potential for activation cascades between members of the KLK family, with physiologically relevant KLK regulatory cascades now described in skin desquamation and semen liquefaction. Despite this expanding knowledge of KLK regulation, details regarding the potential for functional intersection of KLKs with other regulatory proteases are essentially unknown. To elucidate such interaction potential, we have characterized the ability of proteases associated with thrombostasis to hydrolyze the pro-peptide sequences of the KLK family using a previously described pro-KLK fusion protein system. A subset of positive hydrolysis results were subsequently quantified with proteolytic assays using intact recombinant pro-KLK proteins. Pro-KLK6 and 14 can be activated by both plasmin and uPA, with plasmin being the best activator of pro-KLK6 identified to date. Pro-KLK11 and 12 can be activated by a broad-spectrum of thrombostasis proteases, with thrombin exhibiting a high degree of selectivity for pro-KLK12. The results show that proteases of the thrombostasis family can efficiently activate specific pro-KLKs, demonstrating the potential for important regulatory interactions between these two major protease families.
Identifier: FSU_migr_biomed_faculty_publications-0009 (IID)
Keywords: kallikrein-related peptidases, KLK, activation cascade, thrombostasis, plasmin, thrombin, inflammation
Uncontrolled subjects: Enzyme Activation, Factor Xa, Fibrinolysin, Fibroblast Growth Factor 1, Humans, Hydrolysis, Kallikreins, Peptide Hydrolases, Plasma Kallikrein, Recombinant Fusion Proteins, Thrombosis
Note: Originally published in Protein Science
Citation: Yoon, H., Blaber, S.I., Evans, D.M., Trim, J., Juliano, M.A., Scarisbrick, I.A. and Blaber, M. (2008). Activation profiles of human kallikrein-related peptidases by proteases of the thrombostasis axis. Prot. Sci. 17, 1998-2007.
Subject(s): Biochemistry
Molecular biology
Developmental biology
Clinical biochemistry
Medical sciences
Persistent Link to This Record:
Host Institution: FSU
Is Part of Series: Department of Biomedical Sciences Faculty Publications.
Is Part Of: Protein Science : A Publication of the Protein Society.
Issue: 11, 17

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Yoon, H., Blaber, S., Evans, D., Trim, J., Juliano, M., Scarisbrick, I., & Blaber, M. (2008). Activation Profiles of Human Kallikrein-Related Peptidases by Proteases of the Thrombostasis Axis. Protein Science . Retrieved from