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:

"
CST, Suppressor of Cdc13 homolog, complex subunit STN1, N-terminal domain
".

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.
« Back to all FunFams

FunFam 1: CST complex subunit STN1

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 8 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
Single-stranded telomeric DNA binding GO:0043047
Interacting selectively and non-covalently with single-stranded telomere-associated DNA.
7 D2GXY4 (/ISS) Q08DB2 (/ISS) Q4R804 (/ISS) Q4R804 (/ISS) Q4R804 (/ISS) Q6AYD2 (/ISS) Q8K2X3 (/ISS)
Single-stranded DNA binding GO:0003697
Interacting selectively and non-covalently with single-stranded DNA.
2 Q6AYD2 (/ISS) Q9H668 (/ISS)
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).
2 Q8K2X3 (/IPI) Q9H668 (/IPI)
Telomeric DNA binding GO:0042162
Interacting selectively and non-covalently with a telomere, a specific structure at the end of a linear chromosome required for the integrity and maintenance of the end.
2 Q8K2X3 (/IDA) Q9H668 (/IDA)
Single-stranded DNA binding GO:0003697
Interacting selectively and non-covalently with single-stranded DNA.
1 Q8K2X3 (/IDA)
Telomeric DNA binding GO:0042162
Interacting selectively and non-covalently with a telomere, a specific structure at the end of a linear chromosome required for the integrity and maintenance of the end.
1 Q8K2X3 (/ISO)
Single-stranded telomeric DNA binding GO:0043047
Interacting selectively and non-covalently with single-stranded telomere-associated DNA.
1 Q9H668 (/IDA)
Single-stranded telomeric DNA binding GO:0043047
Interacting selectively and non-covalently with single-stranded telomere-associated DNA.
1 Q8K2X3 (/ISO)

There are 11 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
Telomere maintenance via telomere lengthening GO:0010833
Any process that contributes to the maintenance of proper telomeric length and structure by affecting and monitoring the activity of telomeric proteins and lengthening the telomeric DNA.
7 D2GXY4 (/ISS) Q08DB2 (/ISS) Q4R804 (/ISS) Q4R804 (/ISS) Q4R804 (/ISS) Q6AYD2 (/ISS) Q8K2X3 (/ISS)
Telomere maintenance GO:0000723
Any process that contributes to the maintenance of proper telomeric length and structure by affecting and monitoring the activity of telomeric proteins, the length of telomeric DNA and the replication and repair of the DNA. These processes includes those that shorten, lengthen, replicate and repair the telomeric DNA sequences.
6 D2GXY4 (/ISS) Q08DB2 (/ISS) Q4R804 (/ISS) Q4R804 (/ISS) Q4R804 (/ISS) Q6AYD2 (/ISS)
Positive regulation of DNA replication GO:0045740
Any process that activates or increases the frequency, rate or extent of DNA replication.
2 Q6AYD2 (/ISS) Q9H668 (/ISS)
Telomere maintenance GO:0000723
Any process that contributes to the maintenance of proper telomeric length and structure by affecting and monitoring the activity of telomeric proteins, the length of telomeric DNA and the replication and repair of the DNA. These processes includes those that shorten, lengthen, replicate and repair the telomeric DNA sequences.
1 Q9H668 (/IMP)
Telomere maintenance GO:0000723
Any process that contributes to the maintenance of proper telomeric length and structure by affecting and monitoring the activity of telomeric proteins, the length of telomeric DNA and the replication and repair of the DNA. These processes includes those that shorten, lengthen, replicate and repair the telomeric DNA sequences.
1 Q8K2X3 (/ISO)
Telomere maintenance via telomere lengthening GO:0010833
Any process that contributes to the maintenance of proper telomeric length and structure by affecting and monitoring the activity of telomeric proteins and lengthening the telomeric DNA.
1 Q9H668 (/IMP)
Telomere maintenance via telomere lengthening GO:0010833
Any process that contributes to the maintenance of proper telomeric length and structure by affecting and monitoring the activity of telomeric proteins and lengthening the telomeric DNA.
1 Q8K2X3 (/ISO)
Telomere capping GO:0016233
A process in which telomeres are protected from degradation and fusion, thereby ensuring chromosome stability by protecting the ends from both degradation and from being recognized as damaged DNA. May be mediated by specific single- or double-stranded telomeric DNA binding proteins.
1 Q9H668 (/TAS)
Negative regulation of telomere maintenance via telomerase GO:0032211
Any process that stops, prevents, or reduces the frequency, rate or extent of the addition of telomeric repeats by telomerase.
1 Q9H668 (/IDA)
Negative regulation of telomere maintenance via telomerase GO:0032211
Any process that stops, prevents, or reduces the frequency, rate or extent of the addition of telomeric repeats by telomerase.
1 Q8K2X3 (/ISO)
Positive regulation of DNA replication GO:0045740
Any process that activates or increases the frequency, rate or extent of DNA replication.
1 Q8K2X3 (/IDA)

There are 17 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
Nuclear chromosome, telomeric region GO:0000784
The terminal region of a linear nuclear chromosome that includes the telomeric DNA repeats and associated proteins.
7 D2GXY4 (/ISS) Q08DB2 (/ISS) Q4R804 (/ISS) Q4R804 (/ISS) Q4R804 (/ISS) Q6AYD2 (/ISS) Q8K2X3 (/ISS)
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.
7 D2GXY4 (/ISS) Q08DB2 (/ISS) Q4R804 (/ISS) Q4R804 (/ISS) Q4R804 (/ISS) Q6AYD2 (/ISS) Q9H668 (/ISS)
Nuclear chromosome, telomeric region GO:0000784
The terminal region of a linear nuclear chromosome that includes the telomeric DNA repeats and associated proteins.
2 Q8K2X3 (/IDA) Q9H668 (/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.
2 Q8K2X3 (/IDA) Q9H668 (/IDA)
CST complex GO:1990879
A complex formed by the association of Cdc13 (CTC1 in mammals) with Stn1 in yeast (OBFC1 in mammals) and Ten1 protein (also TEN1 in mammals) with single-stranded telomeric DNA. The CST complex plays a role in telomere protection.
2 Q8K2X3 (/IDA) Q9H668 (/IDA)
Nuclear chromosome, telomeric region GO:0000784
The terminal region of a linear nuclear chromosome that includes the telomeric DNA repeats and associated proteins.
1 Q9H668 (/HDA)
Nuclear chromosome, telomeric region GO:0000784
The terminal region of a linear nuclear chromosome that includes the telomeric DNA repeats and associated proteins.
1 Q8K2X3 (/ISO)
Fibrillar center GO:0001650
A structure found most metazoan nucleoli, but not usually found in lower eukaryotes; surrounded by the dense fibrillar component; the zone of transcription from multiple copies of the pre-rRNA genes is in the border region between these two structures.
1 Q9H668 (/IDA)
Fibrillar center GO:0001650
A structure found most metazoan nucleoli, but not usually found in lower eukaryotes; surrounded by the dense fibrillar component; the zone of transcription from multiple copies of the pre-rRNA genes is in the border region between these two structures.
1 Q8K2X3 (/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.
1 Q8K2X3 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 Q9H668 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 Q8K2X3 (/ISO)
Intracellular membrane-bounded organelle GO:0043231
Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.
1 Q9H668 (/IDA)
Intracellular membrane-bounded organelle GO:0043231
Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.
1 Q8K2X3 (/ISO)
Intermediate filament cytoskeleton GO:0045111
Cytoskeletal structure made from intermediate filaments, typically organized in the cytosol as an extended system that stretches from the nuclear envelope to the plasma membrane. Some intermediate filaments run parallel to the cell surface, while others traverse the cytosol; together they form an internal framework that helps support the shape and resilience of the cell.
1 Q9H668 (/IDA)
Intermediate filament cytoskeleton GO:0045111
Cytoskeletal structure made from intermediate filaments, typically organized in the cytosol as an extended system that stretches from the nuclear envelope to the plasma membrane. Some intermediate filaments run parallel to the cell surface, while others traverse the cytosol; together they form an internal framework that helps support the shape and resilience of the cell.
1 Q8K2X3 (/ISO)
CST complex GO:1990879
A complex formed by the association of Cdc13 (CTC1 in mammals) with Stn1 in yeast (OBFC1 in mammals) and Ten1 protein (also TEN1 in mammals) with single-stranded telomeric DNA. The CST complex plays a role in telomere protection.
1 Q8K2X3 (/ISO)
CATH-Gene3D is a Global Biodata Core Resource Learn more...