The name of this superfamily has been modified since the most recent official CATH+ release (v4_3_0). At the point of the last release, this superfamily was named:

"
Alpha-1-antitrypsin, domain 1
".

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 71: Serpin B3

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 4 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
Virus receptor activity GO:0001618
Combining with a virus component and mediating entry of the virus into the cell.
1 P29508 (/IDA)
Protease binding GO:0002020
Interacting selectively and non-covalently with any protease or peptidase.
1 P29508 (/IPI)
Serine-type endopeptidase inhibitor activity GO:0004867
Stops, prevents or reduces the activity of serine-type endopeptidases, enzymes that catalyze the hydrolysis of nonterminal peptide bonds in a polypeptide chain; a serine residue (and a histidine residue) are at the active center of the enzyme.
1 P29508 (/NAS)
Cysteine-type endopeptidase inhibitor activity GO:0004869
Stops, prevents or reduces the activity of a cysteine-type endopeptidase, any enzyme that hydrolyzes peptide bonds in polypeptides by a mechanism in which the sulfhydryl group of a cysteine residue at the active center acts as a nucleophile.
1 P29508 (/IMP)

There are 12 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
Positive regulation of cell population proliferation GO:0008284
Any process that activates or increases the rate or extent of cell proliferation.
1 P29508 (/IMP)
Negative regulation of peptidase activity GO:0010466
Any process that stops or reduces the rate of peptidase activity, the hydrolysis of peptide bonds within proteins.
1 P29508 (/IDA)
Positive regulation of epithelial to mesenchymal transition GO:0010718
Any process that increases the rate, frequency, or extent of epithelial to mesenchymal transition. Epithelial to mesenchymal transition is where an epithelial cell loses apical/basolateral polarity, severs intercellular adhesive junctions, degrades basement membrane components and becomes a migratory mesenchymal cell.
1 P29508 (/IMP)
Positive regulation of endopeptidase activity GO:0010950
Any process that increases the frequency, rate or extent of endopeptidase activity, the endohydrolysis of peptide bonds within proteins.
1 P29508 (/IDA)
Negative regulation of endopeptidase activity GO:0010951
Any process that decreases the frequency, rate or extent of endopeptidase activity, the endohydrolysis of peptide bonds within proteins.
1 P29508 (/IMP)
Positive regulation of cell migration GO:0030335
Any process that activates or increases the frequency, rate or extent of cell migration.
1 P29508 (/IMP)
Autocrine signaling GO:0035425
Signaling between cells of the same type. The signal produced by the signaling cell binds to a receptor on, and affects a cell of the same type.
1 P29508 (/IMP)
Paracrine signaling GO:0038001
The transfer of information from one cell to another, where the signal travels from the signal-producing cell to the receiving cell by passive diffusion or bulk flow in intercellular fluid. The signaling cell and the receiving cell are usually in the vicinity of each other.
1 P29508 (/IMP)
Negative regulation of catalytic activity GO:0043086
Any process that stops or reduces the activity of an enzyme.
1 P29508 (/IDA)
Neutrophil degranulation GO:0043312
The regulated exocytosis of secretory granules containing preformed mediators such as proteases, lipases, and inflammatory mediators by a neutrophil.
1 P29508 (/TAS)
Negative regulation of JUN kinase activity GO:0043508
Any process that stops, prevents, or reduces the frequency, rate or extent of JUN kinase activity.
1 P29508 (/IMP)
Negative regulation of proteolysis GO:0045861
Any process that stops, prevents, or reduces the frequency, rate or extent of the hydrolysis of a peptide bond or bonds within a protein.
1 P29508 (/IDA)

There are 8 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 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 P29508 (/TAS)
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.
1 P29508 (/HDA)
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.
1 P29508 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 P29508 (/IDA)
Cytoplasmic vesicle GO:0031410
A vesicle found in the cytoplasm of a cell.
1 P29508 (/IDA)
Vesicle GO:0031982
Any small, fluid-filled, spherical organelle enclosed by membrane.
1 P29508 (/HDA)
Azurophil granule lumen GO:0035578
The volume enclosed by the membrane of an azurophil granule, a primary lysosomal granule found in neutrophil granulocytes that contains a wide range of hydrolytic enzymes and is released into the extracellular fluid.
1 P29508 (/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 P29508 (/HDA)