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:

"
Cysteine Rich Protein
".

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 20: PDZ and LIM domain protein 5

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 19 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
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).
10 O75112 (/IPI) O75112 (/IPI) Q3TJD7 (/IPI) Q62920 (/IPI) Q679P3 (/IPI) Q8CI51 (/IPI) Q96HC4 (/IPI) Q9JKS4 (/IPI) Q9NR12 (/IPI) Q9Z1Z9 (/IPI)
Protein kinase C binding GO:0005080
Interacting selectively and non-covalently with protein kinase C.
2 Q62920 (/IDA) Q9JKS4 (/IDA)
Cytoskeletal protein binding GO:0008092
Interacting selectively and non-covalently with any protein component of any cytoskeleton (actin, microtubule, or intermediate filament cytoskeleton).
2 O75112 (/IPI) O75112 (/IPI)
Transcription factor binding GO:0008134
Interacting selectively and non-covalently with a transcription factor, a protein required to initiate or regulate transcription.
2 Q679P3 (/IPI) R4GKC8 (/IPI)
Activating transcription factor binding GO:0033613
Interacting selectively and non-covalently with an activating transcription factor, any protein whose activity is required to initiate or upregulate transcription.
2 Q679P3 (/IPI) R4GKC8 (/IPI)
Actin binding GO:0003779
Interacting selectively and non-covalently with monomeric or multimeric forms of actin, including actin filaments.
1 Q62920 (/IDA)
Actin binding GO:0003779
Interacting selectively and non-covalently with monomeric or multimeric forms of actin, including actin filaments.
1 Q8CI51 (/ISO)
Actin binding GO:0003779
Interacting selectively and non-covalently with monomeric or multimeric forms of actin, including actin filaments.
1 Q96HC4 (/ISS)
Protein kinase C binding GO:0005080
Interacting selectively and non-covalently with protein kinase C.
1 Q8CI51 (/ISO)
Protein kinase C binding GO:0005080
Interacting selectively and non-covalently with protein kinase C.
1 Q96HC4 (/ISS)
Cytoskeletal protein binding GO:0008092
Interacting selectively and non-covalently with any protein component of any cytoskeleton (actin, microtubule, or intermediate filament cytoskeleton).
1 Q9JKS4 (/ISO)
Receptor signaling complex adaptor activity GO:0030159
Functions to provide a physical support for the assembly of a multiprotein receptor signaling complex.
1 Q62920 (/NAS)
Actinin binding GO:0042805
Interacting selectively and non-covalently with actinin, any member of a family of proteins that crosslink F-actin.
1 Q62920 (/IDA)
Actinin binding GO:0042805
Interacting selectively and non-covalently with actinin, any member of a family of proteins that crosslink F-actin.
1 Q8CI51 (/ISO)
Actinin binding GO:0042805
Interacting selectively and non-covalently with actinin, any member of a family of proteins that crosslink F-actin.
1 Q96HC4 (/ISS)
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 Q62920 (/IMP)
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 Q8CI51 (/ISO)
Muscle alpha-actinin binding GO:0051371
Interacting selectively and non-covalently with muscle isoforms of actinin. Muscle alpha-actinin isoforms are found in skeletal and cardiac muscle and are localized to the Z-disc.
1 Q9JKS4 (/IDA)
Cadherin binding involved in cell-cell adhesion GO:0098641
Any cadherin binding that occurs as part of the process of cell-cell adhesion.
1 Q96HC4 (/HDA)

There are 29 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
Somitogenesis GO:0001756
The formation of mesodermal clusters that are arranged segmentally along the anterior posterior axis of an embryo.
16 A0A2R8Q829 (/IMP) A0A2R8QDW0 (/IMP) A0A2R8QM62 (/IMP) A0A2R8RUA5 (/IMP) A0A2R8S0G7 (/IMP) E7FCN3 (/IMP) F1Q8D1 (/IMP) F1QGX8 (/IMP) F1QN07 (/IMP) Q4ZGK7 (/IMP)
(6 more)
Heart development GO:0007507
The process whose specific outcome is the progression of the heart over time, from its formation to the mature structure. The heart is a hollow, muscular organ, which, by contracting rhythmically, keeps up the circulation of the blood.
15 A0A2R8Q829 (/IMP) A0A2R8QDW0 (/IMP) A0A2R8QM62 (/IMP) A0A2R8RUA5 (/IMP) A0A2R8S0G7 (/IMP) E7FCN3 (/IMP) F1Q8D1 (/IMP) F1QGX8 (/IMP) F1QN07 (/IMP) Q4ZGK7 (/IMP)
(5 more)
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.
15 A0A2R8Q829 (/IMP) A0A2R8QDW0 (/IMP) A0A2R8QM62 (/IMP) A0A2R8RUA5 (/IMP) A0A2R8S0G7 (/IMP) E7FCN3 (/IMP) F1Q8D1 (/IMP) F1QGX8 (/IMP) F1QN07 (/IMP) Q4ZGK7 (/IMP)
(5 more)
Locomotory behavior GO:0007626
The specific movement from place to place of an organism in response to external or internal stimuli. Locomotion of a whole organism in a manner dependent upon some combination of that organism's internal state and external conditions.
15 A0A2R8Q829 (/IMP) A0A2R8QDW0 (/IMP) A0A2R8QM62 (/IMP) A0A2R8RUA5 (/IMP) A0A2R8S0G7 (/IMP) E7FCN3 (/IMP) F1Q8D1 (/IMP) F1QGX8 (/IMP) F1QN07 (/IMP) Q4ZGK7 (/IMP)
(5 more)
Nucleocytoplasmic transport GO:0006913
The directed movement of molecules between the nucleus and the cytoplasm.
2 Q679P3 (/IDA) R4GKC8 (/IDA)
Regulation of protein localization GO:0032880
Any process that modulates the frequency, rate or extent of any process in which a protein is transported to, or maintained in, a specific location.
2 Q679P3 (/IDA) R4GKC8 (/IDA)
Negative regulation of DNA-binding transcription factor activity GO:0043433
Any process that stops, prevents, or reduces the frequency, rate or extent of the activity of a transcription factor, any factor involved in the initiation or regulation of transcription.
2 Q679P3 (/IDA) R4GKC8 (/IDA)
Regulation of synapse assembly GO:0051963
Any process that modulates the frequency, rate or extent of synapse assembly, the aggregation, arrangement and bonding together of a set of components to form a synapse.
2 Q8CI51 (/ISS) Q96HC4 (/ISS)
Regulation of dendritic spine morphogenesis GO:0061001
Any process that modulates the rate, frequency, or extent of dendritic spine morphogenesis, the process in which the anatomical structures of a dendritic spine are generated and organized. A dendritic spine is a protrusion from a dendrite and a specialized subcellular compartment involved in synaptic transmission.
2 Q8CI51 (/ISS) Q96HC4 (/ISS)
Heart looping GO:0001947
The tube morphogenesis process in which the primitive heart tube loops asymmetrically. This looping brings the primitive heart chambers into alignment preceding their future integration. Heart looping begins with dextral-looping and ends when the main regional divisions of the mature heart and primordium of the great arterial trunks become established preceeding septation.
1 Q6P7E4 (/IGI)
Heart looping GO:0001947
The tube morphogenesis process in which the primitive heart tube loops asymmetrically. This looping brings the primitive heart chambers into alignment preceding their future integration. Heart looping begins with dextral-looping and ends when the main regional divisions of the mature heart and primordium of the great arterial trunks become established preceeding septation.
1 Q6P7E4 (/IMP)
Embryonic heart tube morphogenesis GO:0003143
The process in which the anatomical structures of the embryonic heart tube are generated and organized. The embryonic heart tube is an epithelial tube that will give rise to the mature heart.
1 Q6P7E4 (/IGI)
Atrioventricular valve formation GO:0003190
The developmental process pertaining to the initial formation of the atrioventricular valve from unspecified parts. This process begins with the specific processes that contribute to the appearance of the discrete structure and ends when the structural rudiment is recognizable.
1 Q6P7E4 (/IMP)
Atrial ventricular junction remodeling GO:0003294
The reorganization or renovation of heart tissue that contributes to the maturation of the connection between an atrium and a ventricle.
1 Q6P7E4 (/IMP)
Receptor-mediated endocytosis GO:0006898
An endocytosis process in which cell surface receptors ensure specificity of transport. A specific receptor on the cell surface binds tightly to the extracellular macromolecule (the ligand) that it recognizes; the plasma-membrane region containing the receptor-ligand complex then undergoes endocytosis, forming a transport vesicle containing the receptor-ligand complex and excluding most other plasma-membrane proteins. Receptor-mediated endocytosis generally occurs via clathrin-coated pits and vesicles.
1 Q9NR12 (/TAS)
Axon guidance GO:0007411
The chemotaxis process that directs the migration of an axon growth cone to a specific target site in response to a combination of attractive and repulsive cues.
1 Q9NR12 (/TAS)
Heart development GO:0007507
The process whose specific outcome is the progression of the heart over time, from its formation to the mature structure. The heart is a hollow, muscular organ, which, by contracting rhythmically, keeps up the circulation of the blood.
1 Q62920 (/NAS)
Actin cytoskeleton organization GO:0030036
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising actin filaments and their associated proteins.
1 Q3TJD7 (/IPI)
Pectoral fin development GO:0033339
The process whose specific outcome is the progression of the pectoral fin over time, from its formation to the mature structure.
1 Q6P7E4 (/IMP)
Sarcomere organization GO:0045214
The myofibril assembly process that results in the organization of muscle actomyosin into sarcomeres. The sarcomere is the repeating unit of a myofibril in a muscle cell, composed of an array of overlapping thick and thin filaments between two adjacent Z discs.
1 Q9JKS4 (/IMP)
Positive regulation of osteoblast differentiation GO:0045669
Any process that activates or increases the frequency, rate or extent of osteoblast differentiation.
1 Q9Z1Z9 (/IDA)
Positive regulation of osteoblast differentiation GO:0045669
Any process that activates or increases the frequency, rate or extent of osteoblast differentiation.
1 Q3TJD7 (/ISO)
Regulation of synapse assembly GO:0051963
Any process that modulates the frequency, rate or extent of synapse assembly, the aggregation, arrangement and bonding together of a set of components to form a synapse.
1 Q62920 (/IDA)
Regulation of synapse assembly GO:0051963
Any process that modulates the frequency, rate or extent of synapse assembly, the aggregation, arrangement and bonding together of a set of components to form a synapse.
1 Q8CI51 (/ISO)
Regulation of dendritic spine morphogenesis GO:0061001
Any process that modulates the rate, frequency, or extent of dendritic spine morphogenesis, the process in which the anatomical structures of a dendritic spine are generated and organized. A dendritic spine is a protrusion from a dendrite and a specialized subcellular compartment involved in synaptic transmission.
1 Q62920 (/IDA)
Regulation of dendritic spine morphogenesis GO:0061001
Any process that modulates the rate, frequency, or extent of dendritic spine morphogenesis, the process in which the anatomical structures of a dendritic spine are generated and organized. A dendritic spine is a protrusion from a dendrite and a specialized subcellular compartment involved in synaptic transmission.
1 Q8CI51 (/ISO)
Cell growth involved in cardiac muscle cell development GO:0061049
The growth of a cardiac muscle cell, where growth contributes to the progression of the cell over time from its initial formation to its mature state.
1 Q62920 (/IGI)
Cell growth involved in cardiac muscle cell development GO:0061049
The growth of a cardiac muscle cell, where growth contributes to the progression of the cell over time from its initial formation to its mature state.
1 Q8CI51 (/ISO)
Cell growth involved in cardiac muscle cell development GO:0061049
The growth of a cardiac muscle cell, where growth contributes to the progression of the cell over time from its initial formation to its mature state.
1 Q96HC4 (/ISS)

There are 32 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
Z disc GO:0030018
Platelike region of a muscle sarcomere to which the plus ends of actin filaments are attached.
7 A0A096MJ01 (/IDA) A0A096MKD4 (/IDA) A0A0G2JYM0 (/IDA) O75112 (/IDA) O75112 (/IDA) Q8CI51 (/IDA) Q9JKS4 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
5 B7Z8X5 (/IDA) Q3TJD7 (/IDA) Q679P3 (/IDA) Q6P7E4 (/IDA) R4GKC8 (/IDA)
Actin cytoskeleton GO:0015629
The part of the cytoskeleton (the internal framework of a cell) composed of actin and associated proteins. Includes actin cytoskeleton-associated complexes.
4 Q679P3 (/IDA) Q96HC4 (/IDA) Q9NR12 (/IDA) R4GKC8 (/IDA)
Stress fiber GO:0001725
A contractile actin filament bundle that consists of short actin filaments with alternating polarity, cross-linked by alpha-actinin and possibly other actin bundling proteins, and with myosin present in a periodic distribution along the fiber.
3 Q3TJD7 (/IDA) Q679P3 (/IDA) R4GKC8 (/IDA)
Filamentous actin GO:0031941
A two-stranded helical polymer of the protein actin.
3 Q679P3 (/IDA) Q6P7E4 (/IDA) R4GKC8 (/IDA)
Perinuclear region of cytoplasm GO:0048471
Cytoplasm situated near, or occurring around, the nucleus.
3 Q679P3 (/IDA) Q6P7E4 (/IDA) R4GKC8 (/IDA)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
2 Q8CI51 (/ISS) Q96HC4 (/ISS)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
2 Q62920 (/TAS) Q9NR12 (/TAS)
Cytoskeleton GO:0005856
Any of the various filamentous elements that form the internal framework of cells, and typically remain after treatment of the cells with mild detergent to remove membrane constituents and soluble components of the cytoplasm. The term embraces intermediate filaments, microfilaments, microtubules, the microtrabecular lattice, and other structures characterized by a polymeric filamentous nature and long-range order within the cell. The various elements of the cytoskeleton not only serve in the maintenance of cellular shape but also have roles in other cellular functions, including cellular movement, cell division, endocytosis, and movement of organelles.
2 O75112 (/IDA) O75112 (/IDA)
Actin filament GO:0005884
A filamentous structure formed of a two-stranded helical polymer of the protein actin and associated proteins. Actin filaments are a major component of the contractile apparatus of skeletal muscle and the microfilaments of the cytoskeleton of eukaryotic cells. The filaments, comprising polymerized globular actin molecules, appear as flexible structures with a diameter of 5-9 nm. They are organized into a variety of linear bundles, two-dimensional networks, and three dimensional gels. In the cytoskeleton they are most highly concentrated in the cortex of the cell just beneath the plasma membrane.
2 Q679P3 (/IDA) R4GKC8 (/IDA)
Postsynaptic density GO:0014069
An electron dense network of proteins within and adjacent to the postsynaptic membrane of an asymmetric, neuron-neuron synapse. Its major components include neurotransmitter receptors and the proteins that spatially and functionally organize them such as anchoring and scaffolding molecules, signaling enzymes and cytoskeletal components.
2 Q8CI51 (/ISS) Q96HC4 (/ISS)
Actin cytoskeleton GO:0015629
The part of the cytoskeleton (the internal framework of a cell) composed of actin and associated proteins. Includes actin cytoskeleton-associated complexes.
2 Q3TJD7 (/ISO) Q8CI51 (/ISO)
Cortical actin cytoskeleton GO:0030864
The portion of the actin cytoskeleton, comprising filamentous actin and associated proteins, that lies just beneath the plasma membrane.
2 Q679P3 (/IDA) R4GKC8 (/IDA)
Ruffle GO:0001726
Projection at the leading edge of a crawling cell; the protrusions are supported by a microfilament meshwork.
1 Q3TJD7 (/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.
1 Q9NR12 (/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.
1 Q3TJD7 (/ISO)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
1 Q62920 (/IDA)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
1 Q8CI51 (/ISO)
Cytoskeleton GO:0005856
Any of the various filamentous elements that form the internal framework of cells, and typically remain after treatment of the cells with mild detergent to remove membrane constituents and soluble components of the cytoplasm. The term embraces intermediate filaments, microfilaments, microtubules, the microtrabecular lattice, and other structures characterized by a polymeric filamentous nature and long-range order within the cell. The various elements of the cytoskeleton not only serve in the maintenance of cellular shape but also have roles in other cellular functions, including cellular movement, cell division, endocytosis, and movement of organelles.
1 Q9JKS4 (/ISO)
Cytoskeleton GO:0005856
Any of the various filamentous elements that form the internal framework of cells, and typically remain after treatment of the cells with mild detergent to remove membrane constituents and soluble components of the cytoplasm. The term embraces intermediate filaments, microfilaments, microtubules, the microtrabecular lattice, and other structures characterized by a polymeric filamentous nature and long-range order within the cell. The various elements of the cytoskeleton not only serve in the maintenance of cellular shape but also have roles in other cellular functions, including cellular movement, cell division, endocytosis, and movement of organelles.
1 Q9JKS4 (/ISS)
Cell-cell adherens junction GO:0005913
An adherens junction which connects a cell to another cell.
1 Q96HC4 (/HDA)
Cell-cell adherens junction GO:0005913
An adherens junction which connects a cell to another cell.
1 Q9NR12 (/IDA)
Cell-cell adherens junction GO:0005913
An adherens junction which connects a cell to another cell.
1 Q3TJD7 (/ISO)
Focal adhesion GO:0005925
Small region on the surface of a cell that anchors the cell to the extracellular matrix and that forms a point of termination of actin filaments.
1 Q9NR12 (/IDA)
Focal adhesion GO:0005925
Small region on the surface of a cell that anchors the cell to the extracellular matrix and that forms a point of termination of actin filaments.
1 Q3TJD7 (/ISO)
Postsynaptic density GO:0014069
An electron dense network of proteins within and adjacent to the postsynaptic membrane of an asymmetric, neuron-neuron synapse. Its major components include neurotransmitter receptors and the proteins that spatially and functionally organize them such as anchoring and scaffolding molecules, signaling enzymes and cytoskeletal components.
1 Q62920 (/IDA)
Postsynaptic density GO:0014069
An electron dense network of proteins within and adjacent to the postsynaptic membrane of an asymmetric, neuron-neuron synapse. Its major components include neurotransmitter receptors and the proteins that spatially and functionally organize them such as anchoring and scaffolding molecules, signaling enzymes and cytoskeletal components.
1 Q8CI51 (/ISO)
Actin cytoskeleton GO:0015629
The part of the cytoskeleton (the internal framework of a cell) composed of actin and associated proteins. Includes actin cytoskeleton-associated complexes.
1 Q6P7E4 (/IPI)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
1 Q62920 (/IDA)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
1 Q8CI51 (/ISO)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
1 Q96HC4 (/ISS)
Z disc GO:0030018
Platelike region of a muscle sarcomere to which the plus ends of actin filaments are attached.
1 Q9JKS4 (/ISO)
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