skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Mesotrypsin has evolved four unique residues to cleave trypsin inhibitors as substrates [Mesotrypsin has evolved to cleave trypsin inhibitors as substrates using four unique residues]

Journal Article · · Journal of Biological Chemistry
 [1];  [2];  [2];  [2];  [3];  [2]
  1. Mayo Clinic Comprehensive Cancer Center, Jacksonville, FL (United States); Columbia Univ., New York, NY (United States)
  2. Mayo Clinic Comprehensive Cancer Center, Jacksonville, FL (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)

Human mesotrypsin is highly homologous to other mammalian trypsins, and yet it is functionally unique in possessing resistance to inhibition by canonical serine protease inhibitors and in cleaving these inhibitors as preferred substrates. Arg-193 and Ser-39 have been identified as contributors to the inhibitor resistance and cleavage capability of mesotrypsin, but it is not known whether these residues fully account for the unusual properties of mesotrypsin. Here, we use human cationic trypsin as a template for engineering a gain of catalytic function, assessing mutants containing mesotrypsin-like mutations for resistance to inhibition by bovine pancreatic trypsin inhibitor (BPTI) and amyloid precursor protein Kunitz protease inhibitor (APPI), and for the ability to hydrolyze these inhibitors as substrates. We find that Arg-193 and Ser-39 are sufficient to confer mesotrypsin-like resistance to inhibition; however, compared with mesotrypsin, the trypsin-Y39S/G193R double mutant remains 10-fold slower at hydrolyzing BPTI and 2.5-fold slower at hydrolyzing APPI. We identify two additional residues in mesotrypsin, Lys-74 and Asp-97, which in concert with Arg-193 and Ser-39 confer the full catalytic capability of mesotrypsin for proteolysis of BPTI and APPI. Novel crystal structures of trypsin mutants in complex with BPTI suggest that these four residues function cooperatively to favor conformational dynamics that assist in dissociation of cleaved inhibitors. Our results reveal that efficient inhibitor cleavage is a complex capability to which at least four spatially separated residues of mesotrypsin contribute. As a result, these findings suggest that inhibitor cleavage represents a functional adaptation of mesotrypsin that may have evolved in response to positive selection pressure.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704
OSTI ID:
1341510
Report Number(s):
BNL-108587-2015-JA; R&D Project: LS001
Journal Information:
Journal of Biological Chemistry, Vol. 290, Issue 35; ISSN 0021-9258
Publisher:
American Society for Biochemistry and Molecular BiologyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

References (54)

On the size of the active site in proteases. I. Papain journal April 1967
Serine proteases and protease-activated receptor 2 mediate the proinflammatory and algesic actions of diverse stimulants: Protease- and PAR2-induced pain journal July 2014
A sensitive new substrate for chymotrypsin journal November 1979
Interchromosomal Segmental Duplications Explain the Unusual Structure of PRSS3, the Gene for an Inhibitor-Resistant Trypsinogen journal May 2005
Refinement of Macromolecular Structures by the Maximum-Likelihood Method journal May 1997
Mesotrypsin: A New Inhibitor-Resistant Protease From, a Zymogen in Human Pancreatic Tissue and Fluid journal April 1984
Crystal structure reveals basis for the inhibitor resistance of human brain trypsin journal February 2002
Identification and Expression of the cDNA-encoding Human Mesotrypsin(ogen), an Isoform of Trypsin with Inhibitor Resistance journal April 1997
Thrombin induces tumor growth, metastasis, and angiogenesis: Evidence for a thrombin-regulated dormant tumor phenotype journal November 2006
Protein conformational dynamics dictate the binding affinity for a ligand journal April 2014
A New Generation of Crystallographic Validation Tools for the Protein Data Bank journal October 2011
Protein Inhibitors of Proteinases journal June 1980
Protein Sectors: Evolutionary Units of Three-Dimensional Structure journal August 2009
The P2′ residue is a key determinant of mesotrypsin specificity: engineering a high-affinity inhibitor with anticancer activity journal October 2011
High level expression, purification, and characterization of the Kunitz-type protease inhibitor domain of protease nexin-2/amyloid β-protein precursor journal July 1992
Insights into the serine protease mechanism from atomic resolution structures of trypsin reaction intermediates journal April 2006
Sequence and Conformational Specificity in Substrate Recognition: SEVERAL HUMAN KUNITZ PROTEASE INHIBITOR DOMAINS ARE SPECIFIC SUBSTRATES OF MESOTRYPSIN journal October 2014
Presence versus absence of hydrogen bond donor Tyr-39 influences interactions of cationic trypsin and mesotrypsin with protein protease inhibitors journal June 2012
Regulation of cell surface protease matriptase by HAI2 is essential for placental development, neural tube closure and embryonic survival in mice journal July 2009
MEROPS: the database of proteolytic enzymes, their substrates and inhibitors journal November 2011
Human Cationic Trypsinogen: ROLE OF Asn-21 IN ZYMOGEN ACTIVATION AND IMPLICATIONS IN HEREDITARY PANCREATITIS journal May 2000
Thrombin Generation and the Pathogenesis of Cancer journal February 2006
Autocrine Extra-Pancreatic Trypsin 3 Secretion Promotes Cell Proliferation and Survival in Esophageal Adenocarcinoma journal October 2013
Thermodynamics and kinetics of the hydrolysis of the reactive-site peptide bond in pancreatic trypsin inhibitor (Kunitz) by Dermasterias imbricata trypsin 1 journal January 1980
Determinants of Affinity and Proteolytic Stability in Interactions of Kunitz Family Protease Inhibitors with Mesotrypsin journal September 2010
p-Nitrophenyl-p′-guanidinobenzoate HCl: A new active site titrant for trypsin journal November 1967
Enhanced spontaneous metastasis in bikunin-deficient mice journal January 2006
Canonical protein inhibitors of serine proteases journal November 2003
PRSS3/Mesotrypsin Is a Therapeutic Target for Metastatic Prostate Cancer journal December 2012
Hepsin activates pro-hepatocyte growth factor and is inhibited by hepatocyte growth factor activator inhibitor-1B (HAI-1B) and HAI-2 journal February 2005
A clogged gutter mechanism for protease inhibitors journal July 2002
Affinity Purification of Recombinant Trypsinogen Using Immobilized Ecotin journal March 1998
Structural Evidence for Standard-Mechanism Inhibition in Metallopeptidases from a Complex Poised to Resynthesize a Peptide Bond journal September 2011
Evidence for dynamics in proteins as a mechanism for ligand dissociation journal January 2012
Dermasterias imbricata trypsin 1: an enzyme which rapidly hydrolyzes the reactive-site peptide bonds of protein trypsin inhibitors journal January 1980
Expression, purification, and characterization of the Kunitz-type proteinase inhibitor domain of the amyloid β-protein precursor-like protein-2 journal December 1994
Coot model-building tools for molecular graphics journal November 2004
Serine proteases mediate inflammatory pain in acute pancreatitis journal June 2011
Mesotrypsin promotes malignant growth of breast cancer cells through shedding of CD109 journal December 2009
Potent Inhibition and Global Co-localization Implicate the Transmembrane Kunitz-type Serine Protease Inhibitor Hepatocyte Growth Factor Activator Inhibitor-2 in the Regulation of Epithelial Matriptase Activity journal August 2008
Expression and functional analysis of rat P23, a gut hormone-inducible isoform of trypsin, reveals its resistance to proteinaceous trypsin inhibitors journal November 2002
Evolution of Specificity of Protein Proteinase Inhibitors book January 1974
Coagulation and metastasis: what does the experimental literature tell us? journal May 2013
PRSS3 promotes tumour growth and metastasis of human pancreatic cancer journal October 2010
Targeting MET in cancer: rationale and progress journal January 2012
Functional and Structural Roles of the Cys14–Cys38 Disulfide of Bovine Pancreatic Trypsin Inhibitor journal October 2008
Network Analyses Reveal Pervasive Functional Regulation Between Proteases in the Human Protease Web journal May 2014
MOLREP an Automated Program for Molecular Replacement journal December 1997
Functional characterization of Kunitz domains in hepatocyte growth factor activator inhibitor type 2 journal September 1998
[20] Processing of X-ray diffraction data collected in oscillation mode book January 1997
Serpin structure, function and dysfunction: Serpin structure, function and dysfunction journal July 2011
Characterization of dsRNA-induced pancreatitis model reveals the regulatory role of IFN regulatory factor 2 (Irf2) in trypsinogen5 gene transcription journal October 2011
Structure of a serine protease poised to resynthesize a peptide bond journal June 2009
Immunopurification and protease inhibitory properties of protease nexin-2/amyloid beta-protein precursor. journal June 1990

Cited By (2)

Proteases: Pivot Points in Functional Proteomics book October 2018
Combinatorial protein engineering of proteolytically resistant mesotrypsin inhibitors as candidates for cancer therapy journal May 2016