The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
Trypsin-like serine proteases
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 47461: Kallikrein 1-related peptidase b5

Please note: GO annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

There are 14 GO terms relating to "molecular function"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Endopeptidase activity GO:0004175
Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain.
11 P00741 (/ISS) P16291 (/ISS) P16292 (/ISS) P16293 (/ISS) P16294 (/ISS) P16295 (/ISS) P16296 (/ISS) P19540 (/ISS) Q6SA95 (/ISS) Q804X6 (/ISS)
(1 more)
Calcium ion binding GO:0005509
Interacting selectively and non-covalently with calcium ions (Ca2+).
11 P00741 (/ISS) P16291 (/ISS) P16292 (/ISS) P16293 (/ISS) P16294 (/ISS) P16295 (/ISS) P16296 (/ISS) P19540 (/ISS) Q6SA95 (/ISS) Q804X6 (/ISS)
(1 more)
Endopeptidase activity GO:0004175
Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain.
7 P00756 (/ISO) P00757 (/ISO) P15945 (/ISO) P15947 (/ISO) P15948 (/ISO) P16294 (/ISO) Q61759 (/ISO)
Serine-type endopeptidase activity GO:0004252
Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
6 P00756 (/ISO) P00757 (/ISO) P15945 (/ISO) P15947 (/ISO) P15948 (/ISO) Q61759 (/ISO)
Hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amides GO:0016811
Catalysis of the hydrolysis of any non-peptide carbon-nitrogen bond in a linear amide.
6 P00756 (/ISO) P00757 (/ISO) P15945 (/ISO) P15947 (/ISO) P15948 (/ISO) Q61759 (/ISO)
Endopeptidase activity GO:0004175
Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain.
5 A0A0G2JSQ7 (/IDA) A0A0G2K6G1 (/IDA) G3V8H1 (/IDA) P00740 (/IDA) P00741 (/IDA)
Peptidase activity GO:0008233
Catalysis of the hydrolysis of a peptide bond. A peptide bond is a covalent bond formed when the carbon atom from the carboxyl group of one amino acid shares electrons with the nitrogen atom from the amino group of a second amino acid.
3 P15948 (/IDA) P16294 (/IDA) Q61759 (/IDA)
Signal transducer activity, downstream of receptor GO:0005057
Conveys a signal from an upstream receptor or intracellular signal transducer, converting the signal into a form where it can ultimately trigger a change in the state or activity of a cell.
2 P00756 (/IDA) P00757 (/IDA)
Calcium ion binding GO:0005509
Interacting selectively and non-covalently with calcium ions (Ca2+).
2 P00740 (/IDA) P00741 (/IDA)
Magnesium ion binding GO:0000287
Interacting selectively and non-covalently with magnesium (Mg) ions.
1 P00741 (/IDA)
Serine-type endopeptidase activity GO:0004252
Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
1 P15945 (/IDA)
Serine-type endopeptidase activity GO:0004252
Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
1 P15945 (/ISM)
Serine-type endopeptidase activity GO:0004252
Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
1 P00740 (/NAS)
Calcium ion binding GO:0005509
Interacting selectively and non-covalently with calcium ions (Ca2+).
1 P16294 (/ISO)

There are 21 GO terms relating to "biological process"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Proteolysis GO:0006508
The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
10 P00741 (/ISS) P16291 (/ISS) P16292 (/ISS) P16293 (/ISS) P16295 (/ISS) P16296 (/ISS) P19540 (/ISS) Q6SA95 (/ISS) Q804X6 (/ISS) Q95ND7 (/ISS)
Blood coagulation GO:0007596
The sequential process in which the multiple coagulation factors of the blood interact, ultimately resulting in the formation of an insoluble fibrin clot; it may be divided into three stages: stage 1, the formation of intrinsic and extrinsic prothrombin converting principle; stage 2, the formation of thrombin; stage 3, the formation of stable fibrin polymers.
10 P00741 (/ISS) P16291 (/ISS) P16292 (/ISS) P16293 (/ISS) P16294 (/ISS) P16295 (/ISS) P19540 (/ISS) Q6SA95 (/ISS) Q804X6 (/ISS) Q95ND7 (/ISS)
Zymogen activation GO:0031638
The proteolytic processing of an inactive enzyme to an active form.
10 P16291 (/ISS) P16292 (/ISS) P16293 (/ISS) P16294 (/ISS) P16295 (/ISS) P16296 (/ISS) P19540 (/ISS) Q6SA95 (/ISS) Q804X6 (/ISS) Q95ND7 (/ISS)
Positive regulation of acute inflammatory response GO:0002675
Any process that activates or increases the frequency, rate, or extent of an acute inflammatory response.
3 A0A0G2JSQ7 (/IMP) A0A0G2K6G1 (/IMP) G3V8H1 (/IMP)
Proteolysis GO:0006508
The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
3 P00740 (/IDA) P15945 (/IDA) Q61759 (/IDA)
Response to nutrient GO:0007584
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a nutrient stimulus.
3 A0A0G2JSQ7 (/IEP) A0A0G2K6G1 (/IEP) G3V8H1 (/IEP)
Positive regulation of cell proliferation GO:0008284
Any process that activates or increases the rate or extent of cell proliferation.
3 A0A0G2JSQ7 (/IMP) A0A0G2K6G1 (/IMP) G3V8H1 (/IMP)
Zymogen activation GO:0031638
The proteolytic processing of an inactive enzyme to an active form.
3 P00740 (/IDA) P00741 (/IDA) P15948 (/IDA)
Positive regulation of apoptotic process GO:0043065
Any process that activates or increases the frequency, rate or extent of cell death by apoptotic process.
3 A0A0G2JSQ7 (/IMP) A0A0G2K6G1 (/IMP) G3V8H1 (/IMP)
Blood coagulation GO:0007596
The sequential process in which the multiple coagulation factors of the blood interact, ultimately resulting in the formation of an insoluble fibrin clot; it may be divided into three stages: stage 1, the formation of intrinsic and extrinsic prothrombin converting principle; stage 2, the formation of thrombin; stage 3, the formation of stable fibrin polymers.
2 P00740 (/IDA) P16296 (/IDA)
Blood coagulation GO:0007596
The sequential process in which the multiple coagulation factors of the blood interact, ultimately resulting in the formation of an insoluble fibrin clot; it may be divided into three stages: stage 1, the formation of intrinsic and extrinsic prothrombin converting principle; stage 2, the formation of thrombin; stage 3, the formation of stable fibrin polymers.
2 P00740 (/IMP) P16294 (/IMP)
Signal peptide processing GO:0006465
The proteolytic removal of a signal peptide from a protein during or after transport to a specific location in the cell.
1 P00740 (/TAS)
Proteolysis GO:0006508
The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
1 P16294 (/ISO)
ER to Golgi vesicle-mediated transport GO:0006888
The directed movement of substances from the endoplasmic reticulum (ER) to the Golgi, mediated by COP II vesicles. Small COP II coated vesicles form from the ER and then fuse directly with the cis-Golgi. Larger structures are transported along microtubules to the cis-Golgi.
1 P00740 (/TAS)
Small GTPase mediated signal transduction GO:0007264
Any series of molecular signals in which a small monomeric GTPase relays one or more of the signals.
1 P00757 (/IDA)
Blood coagulation GO:0007596
The sequential process in which the multiple coagulation factors of the blood interact, ultimately resulting in the formation of an insoluble fibrin clot; it may be divided into three stages: stage 1, the formation of intrinsic and extrinsic prothrombin converting principle; stage 2, the formation of thrombin; stage 3, the formation of stable fibrin polymers.
1 P16294 (/ISO)
Blood coagulation, intrinsic pathway GO:0007597
A protein activation cascade that contributes to blood coagulation and consists of the interactions among high molecular weight kininogen, prekallikrein, and factor XII that lead to the activation of clotting factor X.
1 P00740 (/TAS)
Blood coagulation, extrinsic pathway GO:0007598
A protein activation cascade that contributes to blood coagulation and consists of the self-limited process linking exposure and activation of tissue factor to the activation of clotting factor X.
1 P00740 (/TAS)
Peptidyl-glutamic acid carboxylation GO:0017187
The gamma-carboxylation of peptidyl-glutamic acid; catalyzed by the vitamin K dependent gamma-glutamyl carboxylase.
1 P00740 (/TAS)
Zymogen activation GO:0031638
The proteolytic processing of an inactive enzyme to an active form.
1 P16294 (/ISO)
Positive regulation of phosphatidylinositol 3-kinase activity GO:0043552
Any process that activates or increases the frequency, rate or extent of phosphatidylinositol 3-kinase activity.
1 P00757 (/IDA)

There are 15 GO terms relating to "cellular component"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Extracellular space GO:0005615
That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
11 P00741 (/ISS) P16291 (/ISS) P16292 (/ISS) P16293 (/ISS) P16294 (/ISS) P16295 (/ISS) P16296 (/ISS) P19540 (/ISS) Q6SA95 (/ISS) Q804X6 (/ISS)
(1 more)
Extracellular space GO:0005615
That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
7 P00756 (/ISO) P00757 (/ISO) P15945 (/ISO) P15947 (/ISO) P15948 (/ISO) P16294 (/ISO) Q61759 (/ISO)
Extracellular exosome GO:0070062
A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
7 P00756 (/ISO) P00757 (/ISO) P15945 (/ISO) P15947 (/ISO) P15948 (/ISO) P16294 (/ISO) Q61759 (/ISO)
Nucleus GO:0005634
A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.
6 P00756 (/ISO) P00757 (/ISO) P15945 (/ISO) P15947 (/ISO) P15948 (/ISO) Q61759 (/ISO)
Protein complex GO:0043234
A stable macromolecular complex composed (only) of two or more polypeptide subunits along with any covalently attached molecules (such as lipid anchors or oligosaccharide) or non-protein prosthetic groups (such as nucleotides or metal ions). Prosthetic group in this context refers to a tightly bound cofactor. The component polypeptide subunits may be identical.
6 P00756 (/ISO) P00757 (/ISO) P15945 (/ISO) P15947 (/ISO) P15948 (/ISO) Q61759 (/ISO)
Acrosomal vesicle GO:0001669
A structure in the head of a spermatozoon that contains acid hydrolases, and is concerned with the breakdown of the outer membrane of the ovum during fertilization. It lies just beneath the plasma membrane and is derived from the lysosome.
3 A0A0G2JSQ7 (/IDA) A0A0G2K6G1 (/IDA) G3V8H1 (/IDA)
Nucleus GO:0005634
A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.
3 A0A0G2JSQ7 (/IDA) A0A0G2K6G1 (/IDA) G3V8H1 (/IDA)
Apical part of cell GO:0045177
The region of a polarized cell that forms a tip or is distal to a base. For example, in a polarized epithelial cell, the apical region has an exposed surface and lies opposite to the basal lamina that separates the epithelium from other tissue.
3 A0A0G2JSQ7 (/IDA) A0A0G2K6G1 (/IDA) G3V8H1 (/IDA)
Extracellular space GO:0005615
That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
2 P00740 (/IDA) Q61759 (/IDA)
Extracellular region GO:0005576
The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
1 P00740 (/NAS)
Extracellular region GO:0005576
The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
1 P00740 (/TAS)
Endoplasmic reticulum lumen GO:0005788
The volume enclosed by the membranes of the endoplasmic reticulum.
1 P00740 (/TAS)
Golgi lumen GO:0005796
The volume enclosed by the membranes of any cisterna or subcompartment of the Golgi apparatus, including the cis- and trans-Golgi networks.
1 P00740 (/TAS)
Plasma membrane GO:0005886
The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
1 P00740 (/TAS)
Extracellular exosome GO:0070062
A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
1 P00740 (/IDA)