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:

"
Ribonuclease Inhibitor
".

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 38: Biglycan

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 16 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
Extracellular matrix structural constituent conferring compression resistance GO:0030021
A constituent of the extracellular matrix that enables the matrix to resist compressive forces; often a proteoglycan.
14 P07585 (/RCA) P07585 (/RCA) P07585 (/RCA) P07585 (/RCA) P07585 (/RCA) P21810 (/RCA) P28653 (/RCA) P28653 (/RCA) P28654 (/RCA) P28654 (/RCA)
(4 more)
Protein binding GO:0005515
Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
11 P07585 (/IPI) P07585 (/IPI) P07585 (/IPI) P07585 (/IPI) P07585 (/IPI) P21793 (/IPI) P21793 (/IPI) P21810 (/IPI) Q5RI45 (/IPI) Q99MQ4 (/IPI)
(1 more)
Extracellular matrix structural constituent conferring compression resistance GO:0030021
A constituent of the extracellular matrix that enables the matrix to resist compressive forces; often a proteoglycan.
6 P07585 (/ISS) P07585 (/ISS) P07585 (/ISS) P07585 (/ISS) P07585 (/ISS) P21810 (/ISS)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
5 P07585 (/HDA) P07585 (/HDA) P07585 (/HDA) P07585 (/HDA) P07585 (/HDA)
Glycosaminoglycan binding GO:0005539
Interacting selectively and non-covalently with any glycan (polysaccharide) containing a substantial proportion of aminomonosaccharide residues.
4 P28653 (/IDA) P28653 (/IDA) P28654 (/IDA) P28654 (/IDA)
Extracellular matrix binding GO:0050840
Interacting selectively and non-covalently with a component of the extracellular matrix.
4 P28653 (/IDA) P28653 (/IDA) P28654 (/IDA) P28654 (/IDA)
Calcium ion binding GO:0005509
Interacting selectively and non-covalently with calcium ions (Ca2+).
2 Q99MQ4 (/ISO) Q99MQ4 (/ISO)
Calcium ion binding GO:0005509
Interacting selectively and non-covalently with calcium ions (Ca2+).
2 Q99MQ4 (/ISS) Q99MQ4 (/ISS)
Collagen binding GO:0005518
Interacting selectively and non-covalently with collagen, a group of fibrous proteins of very high tensile strength that form the main component of connective tissue in animals. Collagen is highly enriched in glycine (some regions are 33% glycine) and proline, occurring predominantly as 3-hydroxyproline (about 20%).
2 P28654 (/ISO) P28654 (/ISO)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
2 P21793 (/IDA) P21793 (/IDA)
Protein N-terminus binding GO:0047485
Interacting selectively and non-covalently with a protein N-terminus, the end of any peptide chain at which the 2-amino (or 2-imino) function of a constituent amino acid is not attached in peptide linkage to another amino-acid residue.
2 P28654 (/ISO) P28654 (/ISO)
Collagen fibril binding GO:0098633
Interacting selectively and non-covalently with a collagen fibril.
2 P21793 (/IDA) P21793 (/IDA)
Extracellular matrix structural constituent GO:0005201
The action of a molecule that contributes to the structural integrity of the extracellular matrix.
1 P21810 (/NAS)
Calcium ion binding GO:0005509
Interacting selectively and non-covalently with calcium ions (Ca2+).
1 Q9BXN1 (/IDA)
Collagen binding GO:0005518
Interacting selectively and non-covalently with collagen, a group of fibrous proteins of very high tensile strength that form the main component of connective tissue in animals. Collagen is highly enriched in glycine (some regions are 33% glycine) and proline, occurring predominantly as 3-hydroxyproline (about 20%).
1 Q01129 (/IDA)
Protein N-terminus binding GO:0047485
Interacting selectively and non-covalently with a protein N-terminus, the end of any peptide chain at which the 2-amino (or 2-imino) function of a constituent amino acid is not attached in peptide linkage to another amino-acid residue.
1 Q01129 (/IDA)

There are 45 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
Extracellular matrix organization GO:0030198
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of an extracellular matrix.
6 P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P21810 (/TAS)
Chondroitin sulfate biosynthetic process GO:0030206
The chemical reactions and pathways resulting in the formation of chondroitin sulfate, any member of a group of 10-60 kDa glycosaminoglycans, widely distributed in cartilage and other mammalian connective tissues, the repeat units of which consist of beta-(1,4)-linked D-glucuronyl beta-(1,3)-N-acetyl-D-galactosamine sulfate.
6 P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P21810 (/TAS)
Chondroitin sulfate catabolic process GO:0030207
The chemical reactions and pathways resulting in the breakdown of chondroitin sulfate, any member of a group of 10-60 kDa glycosaminoglycans, widely distributed in cartilage and other mammalian connective tissues, the repeat units of which consist of beta-(1,4)-linked D-glucuronyl beta-(1,3)-N-acetyl-D-galactosamine sulfate.
6 P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P21810 (/TAS)
Dermatan sulfate biosynthetic process GO:0030208
The chemical reactions and pathways resulting in the formation of dermatan sulfate, any glycosaminoglycan with repeats consisting of beta-(1,4)-linked L-iduronyl-beta-(1,3)-N-acetyl-D-galactosamine 4-sulfate units.
6 P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P21810 (/TAS)
Animal organ morphogenesis GO:0009887
Morphogenesis of an animal organ. An organ is defined as a tissue or set of tissues that work together to perform a specific function or functions. Morphogenesis is the process in which anatomical structures are generated and organized. Organs are commonly observed as visibly distinct structures, but may also exist as loosely associated clusters of cells that work together to perform a specific function or functions.
5 P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS)
Positive regulation of autophagy GO:0010508
Any process that activates, maintains or increases the rate of autophagy. Autophagy is the process in which cells digest parts of their own cytoplasm.
5 P07585 (/IDA) P07585 (/IDA) P07585 (/IDA) P07585 (/IDA) P07585 (/IDA)
Negative regulation of endothelial cell migration GO:0010596
Any process that decreases the rate, frequency, or extent of the orderly movement of an endothelial cell into the extracellular matrix to form an endothelium.
5 P07585 (/IDA) P07585 (/IDA) P07585 (/IDA) P07585 (/IDA) P07585 (/IDA)
Positive regulation of phosphatidylinositol 3-kinase signaling GO:0014068
Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the phosphatidylinositol 3-kinase cascade.
5 P07585 (/IDA) P07585 (/IDA) P07585 (/IDA) P07585 (/IDA) P07585 (/IDA)
Positive regulation of macroautophagy GO:0016239
Any process, such as recognition of nutrient depletion, that activates or increases the rate of macroautophagy to bring cytosolic macromolecules to the vacuole/lysosome for degradation.
5 P07585 (/IDA) P07585 (/IDA) P07585 (/IDA) P07585 (/IDA) P07585 (/IDA)
Positive regulation of macroautophagy GO:0016239
Any process, such as recognition of nutrient depletion, that activates or increases the rate of macroautophagy to bring cytosolic macromolecules to the vacuole/lysosome for degradation.
5 P07585 (/IGI) P07585 (/IGI) P07585 (/IGI) P07585 (/IGI) P07585 (/IGI)
Negative regulation of angiogenesis GO:0016525
Any process that stops, prevents, or reduces the frequency, rate or extent of angiogenesis.
5 P07585 (/IDA) P07585 (/IDA) P07585 (/IDA) P07585 (/IDA) P07585 (/IDA)
Positive regulation of transcription by RNA polymerase II GO:0045944
Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter.
5 P07585 (/IGI) P07585 (/IGI) P07585 (/IGI) P07585 (/IGI) P07585 (/IGI)
Positive regulation of mitochondrial depolarization GO:0051901
Any process that activates, maintains or increases the frequency, rate or extent of the change in the membrane potential of the mitochondria from negative to positive.
5 P07585 (/IGI) P07585 (/IGI) P07585 (/IGI) P07585 (/IGI) P07585 (/IGI)
Positive regulation of mitochondrial fission GO:0090141
Any process that increases the rate, frequency or extent of mitochondrial fission. Mitochondrial fission is the division of a mitochondrion within a cell to form two or more separate mitochondrial compartments.
5 P07585 (/IGI) P07585 (/IGI) P07585 (/IGI) P07585 (/IGI) P07585 (/IGI)
Negative regulation of vascular endothelial growth factor signaling pathway GO:1900747
Any process that stops, prevents or reduces the frequency, rate or extent of vascular endothelial growth factor signaling pathway.
5 P07585 (/IDA) P07585 (/IDA) P07585 (/IDA) P07585 (/IDA) P07585 (/IDA)
Peptide cross-linking via chondroitin 4-sulfate glycosaminoglycan GO:0019800
The formation of a cross-link between peptide chains mediated by a chondroitin 4-sulfate glycosaminoglycan that originates from a typical O-glycosidic link to serine of one chain; the other chain is esterified, via the alpha-carbon of its C-terminal Asp, to C-6 of an internal N-acetylgalactosamine of the glycosaminoglycan chain.
4 P28653 (/IDA) P28653 (/IDA) P28654 (/IDA) P28654 (/IDA)
Negative regulation of transforming growth factor beta receptor signaling pathway GO:0030512
Any process that stops, prevents, or reduces the frequency, rate or extent of any TGF-beta receptor signaling pathway.
3 Q99MQ4 (/IDA) Q99MQ4 (/IDA) Q9BXN1 (/IDA)
Positive regulation of autophagy GO:0010508
Any process that activates, maintains or increases the rate of autophagy. Autophagy is the process in which cells digest parts of their own cytoplasm.
2 P28654 (/ISO) P28654 (/ISO)
Negative regulation of endothelial cell migration GO:0010596
Any process that decreases the rate, frequency, or extent of the orderly movement of an endothelial cell into the extracellular matrix to form an endothelium.
2 P28654 (/ISO) P28654 (/ISO)
Positive regulation of phosphatidylinositol 3-kinase signaling GO:0014068
Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the phosphatidylinositol 3-kinase cascade.
2 P28654 (/ISO) P28654 (/ISO)
Positive regulation of macroautophagy GO:0016239
Any process, such as recognition of nutrient depletion, that activates or increases the rate of macroautophagy to bring cytosolic macromolecules to the vacuole/lysosome for degradation.
2 P28654 (/ISO) P28654 (/ISO)
Negative regulation of angiogenesis GO:0016525
Any process that stops, prevents, or reduces the frequency, rate or extent of angiogenesis.
2 P28654 (/ISO) P28654 (/ISO)
Bone mineralization GO:0030282
The deposition of hydroxyapatite, a form of calcium phosphate with the formula Ca10(PO4)6(OH)2, in bone tissue.
2 Q99MQ4 (/ISO) Q99MQ4 (/ISO)
Bone mineralization GO:0030282
The deposition of hydroxyapatite, a form of calcium phosphate with the formula Ca10(PO4)6(OH)2, in bone tissue.
2 Q99MQ4 (/ISS) Q99MQ4 (/ISS)
Negative regulation of transforming growth factor beta receptor signaling pathway GO:0030512
Any process that stops, prevents, or reduces the frequency, rate or extent of any TGF-beta receptor signaling pathway.
2 Q99MQ4 (/ISO) Q99MQ4 (/ISO)
Positive regulation of transcription by RNA polymerase II GO:0045944
Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter.
2 P28654 (/ISO) P28654 (/ISO)
Chondroitin sulfate proteoglycan metabolic process GO:0050654
The chemical reactions and pathways involving chondroitin sulfate proteoglycan, any glycoprotein whose glycosaminoglycan units are chondroitin sulfate. Chondroitin sulfates are a group of 10-60 kDa glycosaminoglycans, widely distributed in cartilage and other mammalian connective tissues; the repeat units consist of beta-(1,4)-linked D-glucuronyl beta-(1,3)-N-acetyl-D-galactosamine sulfate.
2 Q5RI45 (/IDA) Q803T1 (/IDA)
Cartilage development GO:0051216
The process whose specific outcome is the progression of a cartilage element over time, from its formation to the mature structure. Cartilage elements are skeletal elements that consist of connective tissue dominated by extracellular matrix containing collagen type II and large amounts of proteoglycan, particularly chondroitin sulfate.
2 Q5RI45 (/IMP) Q803T1 (/IMP)
Positive regulation of mitochondrial depolarization GO:0051901
Any process that activates, maintains or increases the frequency, rate or extent of the change in the membrane potential of the mitochondria from negative to positive.
2 P28654 (/ISO) P28654 (/ISO)
Convergent extension involved in axis elongation GO:0060028
The morphogenetic process in which an epithelium narrows along one axis and lengthens in a perpendicular axis contributing to the lengthening of the axis of an organism.
2 Q5RI45 (/IMP) Q803T1 (/IMP)
Negative regulation of tooth mineralization GO:0070171
Any process that stops, prevents, or reduces the frequency, rate or extent of tooth mineralization, the deposition of calcium salts in tooth structures.
2 Q99MQ4 (/IDA) Q99MQ4 (/IDA)
Positive regulation of mitochondrial fission GO:0090141
Any process that increases the rate, frequency or extent of mitochondrial fission. Mitochondrial fission is the division of a mitochondrion within a cell to form two or more separate mitochondrial compartments.
2 P28654 (/ISO) P28654 (/ISO)
Negative regulation of vascular endothelial growth factor signaling pathway GO:1900747
Any process that stops, prevents or reduces the frequency, rate or extent of vascular endothelial growth factor signaling pathway.
2 P28654 (/ISO) P28654 (/ISO)
Negative regulation of collagen fibril organization GO:1904027
Any process that stops, prevents or reduces the frequency, rate or extent of collagen fibril organization.
2 P21793 (/IDA) P21793 (/IDA)
Kidney development GO:0001822
The process whose specific outcome is the progression of the kidney over time, from its formation to the mature structure. The kidney is an organ that filters the blood and/or excretes the end products of body metabolism in the form of urine.
1 Q01129 (/IEP)
Placenta development GO:0001890
The process whose specific outcome is the progression of the placenta over time, from its formation to the mature structure. The placenta is an organ of metabolic interchange between fetus and mother, partly of embryonic origin and partly of maternal origin.
1 Q01129 (/IEP)
Blood vessel remodeling GO:0001974
The reorganization or renovation of existing blood vessels.
1 P47853 (/IEP)
Skeletal muscle tissue development GO:0007519
The developmental sequence of events leading to the formation of adult skeletal muscle tissue. The main events are: the fusion of myoblasts to form myotubes that increase in size by further fusion to them of myoblasts, the formation of myofibrils within their cytoplasm and the establishment of functional neuromuscular junctions with motor neurons. At this stage they can be regarded as mature muscle fibers.
1 Q01129 (/IEP)
Aging GO:0007568
A developmental process that is a deterioration and loss of function over time. Aging includes loss of functions such as resistance to disease, homeostasis, and fertility, as well as wear and tear. Aging includes cellular senescence, but is more inclusive. May precede death and may succeed developmental maturation (GO:0021700).
1 Q01129 (/IEP)
Response to mechanical stimulus GO:0009612
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 mechanical stimulus.
1 Q01129 (/IEP)
Bone mineralization GO:0030282
The deposition of hydroxyapatite, a form of calcium phosphate with the formula Ca10(PO4)6(OH)2, in bone tissue.
1 Q9BXN1 (/IDA)
Response to lipopolysaccharide GO:0032496
Any process that results in a change in state or activity of an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a lipopolysaccharide stimulus; lipopolysaccharide is a major component of the cell wall of gram-negative bacteria.
1 Q01129 (/IEP)
Wound healing GO:0042060
The series of events that restore integrity to a damaged tissue, following an injury.
1 Q01129 (/IEP)
Negative regulation of tooth mineralization GO:0070171
Any process that stops, prevents, or reduces the frequency, rate or extent of tooth mineralization, the deposition of calcium salts in tooth structures.
1 Q9BXN1 (/ISS)
Response to fluoride GO:1902617
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 fluoride stimulus.
1 Q5XIH1 (/IEP)

There are 22 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
Collagen-containing extracellular matrix GO:0062023
An extracellular matrix consisting mainly of proteins (especially collagen) and glycosaminoglycans (mostly as proteoglycans) that provides not only essential physical scaffolding for the cellular constituents but can also initiate crucial biochemical and biomechanical cues required for tissue morphogenesis, differentiation and homeostasis. The components are secreted by cells in the vicinity and form a sheet underlying or overlying cells such as endothelial and epithelial cells.
13 P07585 (/HDA) P07585 (/HDA) P07585 (/HDA) P07585 (/HDA) P07585 (/HDA) P21810 (/HDA) P28653 (/HDA) P28653 (/HDA) P28654 (/HDA) P28654 (/HDA)
(3 more)
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.
9 P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P21809 (/TAS) P21809 (/TAS) P21809 (/TAS) P21810 (/TAS)
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.
9 P07585 (/HDA) P07585 (/HDA) P07585 (/HDA) P07585 (/HDA) P07585 (/HDA) P28653 (/HDA) P28653 (/HDA) P28654 (/HDA) P28654 (/HDA)
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.
6 P07585 (/HDA) P07585 (/HDA) P07585 (/HDA) P07585 (/HDA) P07585 (/HDA) P21810 (/HDA)
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.
6 P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P21810 (/TAS)
Extracellular matrix GO:0031012
A structure lying external to one or more cells, which provides structural support, biochemical or biomechanical cues for cells or tissues.
6 P28653 (/IDA) P28653 (/IDA) Q01129 (/IDA) Q99MQ4 (/IDA) Q99MQ4 (/IDA) Q9BXN1 (/IDA)
Lysosomal lumen GO:0043202
The volume enclosed within the lysosomal membrane.
6 P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P07585 (/TAS) P21810 (/TAS)
Extracellular matrix GO:0031012
A structure lying external to one or more cells, which provides structural support, biochemical or biomechanical cues for cells or tissues.
4 P28654 (/ISO) P28654 (/ISO) Q99MQ4 (/ISO) Q99MQ4 (/ISO)
Transport vesicle GO:0030133
Any of the vesicles of the constitutive secretory pathway, which carry cargo from the endoplasmic reticulum to the Golgi, between Golgi cisternae, from the Golgi to the ER (retrograde transport) or to destinations within or outside the cell.
3 P21809 (/ISS) P21809 (/ISS) P21809 (/ISS)
Collagen-containing extracellular matrix GO:0062023
An extracellular matrix consisting mainly of proteins (especially collagen) and glycosaminoglycans (mostly as proteoglycans) that provides not only essential physical scaffolding for the cellular constituents but can also initiate crucial biochemical and biomechanical cues required for tissue morphogenesis, differentiation and homeostasis. The components are secreted by cells in the vicinity and form a sheet underlying or overlying cells such as endothelial and epithelial cells.
3 B5X3L8 (/IDA) P21793 (/IDA) P21793 (/IDA)
Collagen type VI trimer GO:0005589
A collagen heterotrimer containing type VI alpha chains in alpha1(VI)alpha2(VI)alpha3(VI) trimers; type VI collagen triple helices associate to form beaded fibrils.
2 P28654 (/ISO) P28654 (/ISO)
Cell surface GO:0009986
The external part of the cell wall and/or plasma membrane.
2 P28653 (/ISS) P28653 (/ISS)
Transport vesicle GO:0030133
Any of the vesicles of the constitutive secretory pathway, which carry cargo from the endoplasmic reticulum to the Golgi, between Golgi cisternae, from the Golgi to the ER (retrograde transport) or to destinations within or outside the cell.
2 P28653 (/ISO) P28653 (/ISO)
Extracellular matrix GO:0031012
A structure lying external to one or more cells, which provides structural support, biochemical or biomechanical cues for cells or tissues.
2 Q99MQ4 (/ISS) Q99MQ4 (/ISS)
Sarcolemma GO:0042383
The outer membrane of a muscle cell, consisting of the plasma membrane, a covering basement membrane (about 100 nm thick and sometimes common to more than one fiber), and the associated loose network of collagen fibers.
2 P28653 (/IDA) P28653 (/IDA)
Cell projection GO:0042995
A prolongation or process extending from a cell, e.g. a flagellum or axon.
2 Q99MQ4 (/ISO) Q99MQ4 (/ISO)
Collagen type VI trimer GO:0005589
A collagen heterotrimer containing type VI alpha chains in alpha1(VI)alpha2(VI)alpha3(VI) trimers; type VI collagen triple helices associate to form beaded fibrils.
1 Q01129 (/IDA)
Cell surface GO:0009986
The external part of the cell wall and/or plasma membrane.
1 P21810 (/IDA)
Transport vesicle GO:0030133
Any of the vesicles of the constitutive secretory pathway, which carry cargo from the endoplasmic reticulum to the Golgi, between Golgi cisternae, from the Golgi to the ER (retrograde transport) or to destinations within or outside the cell.
1 P21810 (/IDA)
Extracellular matrix GO:0031012
A structure lying external to one or more cells, which provides structural support, biochemical or biomechanical cues for cells or tissues.
1 P21810 (/NAS)
Cell projection GO:0042995
A prolongation or process extending from a cell, e.g. a flagellum or axon.
1 Q5XIH1 (/IDA)
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 P21810 (/HDA)