The name of this superfamily has been modified since the most recent official CATH+ release (v4_4_0). At the point of the last release, this superfamily was named:

"
CBS-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.
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FunFam 14: Cystathionine beta-synthase

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 34 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
Pyridoxal phosphate binding GO:0030170
Interacting selectively and non-covalently with pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.
5 P32232 (/ISS) Q58H57 (/ISS) Q58H57 (/ISS) Q91WT9 (/ISS) Q9N0V7 (/ISS)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
5 P32232 (/ISS) Q58H57 (/ISS) Q58H57 (/ISS) Q91WT9 (/ISS) Q9N0V7 (/ISS)
Cystathionine beta-synthase activity GO:0004122
Catalysis of the reaction: L-serine + L-homocysteine = cystathionine + H2O.
4 Q58H57 (/ISS) Q58H57 (/ISS) Q91WT9 (/ISS) Q9N0V7 (/ISS)
Cystathionine beta-synthase activity GO:0004122
Catalysis of the reaction: L-serine + L-homocysteine = cystathionine + H2O.
3 P32232 (/IDA) P35520 (/IDA) P35520 (/IDA)
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 P35520 (/IPI) P35520 (/IPI)
Oxygen binding GO:0019825
Interacting selectively and non-covalently with oxygen (O2).
2 P35520 (/IDA) P35520 (/IDA)
Enzyme binding GO:0019899
Interacting selectively and non-covalently with any enzyme.
2 P35520 (/IPI) P35520 (/IPI)
Heme binding GO:0020037
Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.
2 P35520 (/IDA) P35520 (/IDA)
Heme binding GO:0020037
Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.
2 P35520 (/IMP) P35520 (/IMP)
Pyridoxal phosphate binding GO:0030170
Interacting selectively and non-covalently with pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.
2 P35520 (/IDA) P35520 (/IDA)
Ubiquitin protein ligase binding GO:0031625
Interacting selectively and non-covalently with a ubiquitin protein ligase enzyme, any of the E3 proteins.
2 P35520 (/IPI) P35520 (/IPI)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
2 P35520 (/IPI) P35520 (/IPI)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
2 P35520 (/IDA) P35520 (/IDA)
Nitrite reductase (NO-forming) activity GO:0050421
Catalysis of the reaction: nitric oxide + H2O + ferricytochrome c = nitrite + ferrocytochrome c + 2 H+.
2 P35520 (/IDA) P35520 (/IDA)
Carbon monoxide binding GO:0070025
Interacting selectively and non-covalently with carbon monoxide (CO).
2 P35520 (/IDA) P35520 (/IDA)
Nitric oxide binding GO:0070026
Interacting selectively and non-covalently with nitric oxide (NO).
2 P35520 (/IDA) P35520 (/IDA)
Modified amino acid binding GO:0072341
Interacting selectively and non-covalently with a modified amino acid.
2 P35520 (/IDA) P35520 (/IDA)
S-adenosyl-L-methionine binding GO:1904047
Interacting selectively and non-covalently with S-adenosyl-L-methionine.
2 P35520 (/IDA) P35520 (/IDA)
Cystathionine beta-synthase activity GO:0004122
Catalysis of the reaction: L-serine + L-homocysteine = cystathionine + H2O.
1 Q91WT9 (/IMP)
Cystathionine beta-synthase activity GO:0004122
Catalysis of the reaction: L-serine + L-homocysteine = cystathionine + H2O.
1 Q91WT9 (/ISO)
Cystathionine beta-synthase activity GO:0004122
Catalysis of the reaction: L-serine + L-homocysteine = cystathionine + H2O.
1 P32232 (/TAS)
Oxygen binding GO:0019825
Interacting selectively and non-covalently with oxygen (O2).
1 Q91WT9 (/ISO)
Enzyme binding GO:0019899
Interacting selectively and non-covalently with any enzyme.
1 Q91WT9 (/ISO)
Heme binding GO:0020037
Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.
1 Q91WT9 (/ISO)
Pyridoxal phosphate binding GO:0030170
Interacting selectively and non-covalently with pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.
1 Q91WT9 (/ISO)
Pyridoxal phosphate binding GO:0030170
Interacting selectively and non-covalently with pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.
1 P32232 (/TAS)
Ubiquitin protein ligase binding GO:0031625
Interacting selectively and non-covalently with a ubiquitin protein ligase enzyme, any of the E3 proteins.
1 Q91WT9 (/ISO)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
1 Q91WT9 (/ISO)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
1 Q91WT9 (/ISO)
Nitrite reductase (NO-forming) activity GO:0050421
Catalysis of the reaction: nitric oxide + H2O + ferricytochrome c = nitrite + ferrocytochrome c + 2 H+.
1 Q91WT9 (/ISO)
Carbon monoxide binding GO:0070025
Interacting selectively and non-covalently with carbon monoxide (CO).
1 Q91WT9 (/ISO)
Nitric oxide binding GO:0070026
Interacting selectively and non-covalently with nitric oxide (NO).
1 Q91WT9 (/ISO)
Modified amino acid binding GO:0072341
Interacting selectively and non-covalently with a modified amino acid.
1 Q91WT9 (/ISO)
S-adenosyl-L-methionine binding GO:1904047
Interacting selectively and non-covalently with S-adenosyl-L-methionine.
1 Q91WT9 (/ISO)

There are 37 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
Hydrogen sulfide biosynthetic process GO:0070814
The chemical reactions and pathways resulting in the formation of hydrogen sulfide, H2S.
6 P35520 (/ISS) P35520 (/ISS) Q58H57 (/ISS) Q58H57 (/ISS) Q91WT9 (/ISS) Q9N0V7 (/ISS)
L-serine metabolic process GO:0006563
The chemical reactions and pathways involving L-serine, the L-enantiomer of serine, i.e. (2S)-2-amino-3-hydroxypropanoic acid.
5 P32232 (/ISS) Q58H57 (/ISS) Q58H57 (/ISS) Q91WT9 (/ISS) Q9N0V7 (/ISS)
Homocysteine catabolic process GO:0043418
The chemical reactions and pathways resulting in the breakdown of homocysteine, the amino acid alpha-amino-gamma-mercaptobutanoic acid.
5 P32232 (/ISS) Q58H57 (/ISS) Q58H57 (/ISS) Q91WT9 (/ISS) Q9N0V7 (/ISS)
Axis elongation GO:0003401
The developmental growth that results in the elongation of a line that defines polarity or symmetry in an anatomical structure.
4 B5DDI8 (/IMP) F1QIC0 (/IMP) Q58EC2 (/IMP) Q5EI65 (/IMP)
Regulation of homocysteine metabolic process GO:0050666
Any process that modulates the frequency, rate or extent of the chemical reactions and pathways involving homocysteine, the amino acid alpha-amino-gamma-mercaptobutanoic acid.
4 B5DDI8 (/IMP) F1QIC0 (/IMP) Q58EC2 (/IMP) Q5EI65 (/IMP)
Homocysteine metabolic process GO:0050667
The chemical reactions and pathways involving homocysteine, the amino acid alpha-amino-gamma-mercaptobutanoic acid. Homocysteine is an important intermediate in the metabolic reactions of its S-methyl derivative, methionine.
4 Q58H57 (/ISS) Q58H57 (/ISS) Q91WT9 (/ISS) Q9N0V7 (/ISS)
Homocysteine metabolic process GO:0050667
The chemical reactions and pathways involving homocysteine, the amino acid alpha-amino-gamma-mercaptobutanoic acid. Homocysteine is an important intermediate in the metabolic reactions of its S-methyl derivative, methionine.
3 P32232 (/IDA) P35520 (/IDA) P35520 (/IDA)
Hydrogen sulfide biosynthetic process GO:0070814
The chemical reactions and pathways resulting in the formation of hydrogen sulfide, H2S.
3 P32232 (/IDA) P35520 (/IDA) P35520 (/IDA)
L-serine metabolic process GO:0006563
The chemical reactions and pathways involving L-serine, the L-enantiomer of serine, i.e. (2S)-2-amino-3-hydroxypropanoic acid.
2 P35520 (/IDA) P35520 (/IDA)
L-serine catabolic process GO:0006565
The chemical reactions and pathways resulting in the breakdown of L-serine, the L-enantiomer of serine, i.e. (2S)-2-amino-3-hydroxypropanoic acid.
2 P35520 (/IDA) P35520 (/IDA)
Cysteine biosynthetic process GO:0019344
The chemical reactions and pathways resulting in the formation of cysteine, 2-amino-3-mercaptopropanoic acid.
2 P35520 (/IDA) P35520 (/IDA)
Transsulfuration GO:0019346
The interconversion of homocysteine and cysteine via cystathionine. In contrast with enteric bacteria and mammals, Saccharomyces cerevisiae has two transsulfuration pathways employing two separate sets of enzymes.
2 P35520 (/TAS) P35520 (/TAS)
L-cysteine catabolic process GO:0019448
The chemical reactions and pathways resulting in the breakdown of L-cysteine, the L-enantiomer of 2-amino-3-mercaptopropanoic acid, i.e. (2R)-2-amino-3-mercaptopropanoic acid.
2 P35520 (/IDA) P35520 (/IDA)
DNA protection GO:0042262
Any process in which DNA is protected from damage by, for example, oxidative stress.
2 P35520 (/IMP) P35520 (/IMP)
Homocysteine catabolic process GO:0043418
The chemical reactions and pathways resulting in the breakdown of homocysteine, the amino acid alpha-amino-gamma-mercaptobutanoic acid.
2 P35520 (/IDA) P35520 (/IDA)
Endochondral ossification GO:0001958
Replacement ossification wherein bone tissue replaces cartilage.
1 Q91WT9 (/IMP)
Blood vessel remodeling GO:0001974
The reorganization or renovation of existing blood vessels.
1 Q91WT9 (/IMP)
Cysteine biosynthetic process from serine GO:0006535
The chemical reactions and pathways resulting in the formation of cysteine from other compounds, including serine.
1 P32232 (/TAS)
Superoxide metabolic process GO:0006801
The chemical reactions and pathways involving superoxide, the superoxide anion O2- (superoxide free radical), or any compound containing this species.
1 Q91WT9 (/IMP)
Regulation of nitric oxide mediated signal transduction GO:0010749
Any process that modulates the rate, frequency or extent of nitric oxide mediated signal transduction. Nitric oxide mediated signal transduction is a series of molecular signals mediated by the detection of nitric oxide (NO).
1 Q91WT9 (/IMP)
Cysteine biosynthetic process GO:0019344
The chemical reactions and pathways resulting in the formation of cysteine, 2-amino-3-mercaptopropanoic acid.
1 Q91WT9 (/IMP)
Transsulfuration GO:0019346
The interconversion of homocysteine and cysteine via cystathionine. In contrast with enteric bacteria and mammals, Saccharomyces cerevisiae has two transsulfuration pathways employing two separate sets of enzymes.
1 P32232 (/IDA)
Transsulfuration GO:0019346
The interconversion of homocysteine and cysteine via cystathionine. In contrast with enteric bacteria and mammals, Saccharomyces cerevisiae has two transsulfuration pathways employing two separate sets of enzymes.
1 Q91WT9 (/ISO)
Cerebellum morphogenesis GO:0021587
The process in which the anatomical structure of the cerebellum is generated and organized. The cerebellum is the portion of the brain in the back of the head between the cerebrum and the pons. The cerebellum controls balance for walking and standing, modulates the force and range of movement and is involved in the learning of motor skills.
1 Q91WT9 (/IMP)
Response to nutrient levels GO:0031667
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 stimulus reflecting the presence, absence, or concentration of nutrients.
1 P32232 (/IEP)
Negative regulation of apoptotic process GO:0043066
Any process that stops, prevents, or reduces the frequency, rate or extent of cell death by apoptotic process.
1 P32232 (/IDA)
Negative regulation of apoptotic process GO:0043066
Any process that stops, prevents, or reduces the frequency, rate or extent of cell death by apoptotic process.
1 Q91WT9 (/ISO)
Regulation of JUN kinase activity GO:0043506
Any process that modulates the frequency, rate or extent of JUN kinase activity.
1 Q91WT9 (/IMP)
Homocysteine metabolic process GO:0050667
The chemical reactions and pathways involving homocysteine, the amino acid alpha-amino-gamma-mercaptobutanoic acid. Homocysteine is an important intermediate in the metabolic reactions of its S-methyl derivative, methionine.
1 Q91WT9 (/IMP)
Homocysteine metabolic process GO:0050667
The chemical reactions and pathways involving homocysteine, the amino acid alpha-amino-gamma-mercaptobutanoic acid. Homocysteine is an important intermediate in the metabolic reactions of its S-methyl derivative, methionine.
1 Q91WT9 (/ISO)
Homocysteine metabolic process GO:0050667
The chemical reactions and pathways involving homocysteine, the amino acid alpha-amino-gamma-mercaptobutanoic acid. Homocysteine is an important intermediate in the metabolic reactions of its S-methyl derivative, methionine.
1 P32232 (/TAS)
Response to folic acid GO:0051593
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 folic acid stimulus.
1 Q91WT9 (/IMP)
Maternal process involved in female pregnancy GO:0060135
A reproductive process occurring in the mother that allows an embryo or fetus to develop within it.
1 Q91WT9 (/IMP)
Cartilage development involved in endochondral bone morphogenesis GO:0060351
The process whose specific outcome is the progression of the cartilage that will provide a scaffold for mineralization of endochondral bones.
1 Q91WT9 (/IMP)
Hydrogen sulfide biosynthetic process GO:0070814
The chemical reactions and pathways resulting in the formation of hydrogen sulfide, H2S.
1 Q91WT9 (/ISO)
Cellular response to hypoxia GO:0071456
Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level.
1 P32232 (/IDA)
Cellular response to hypoxia GO:0071456
Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level.
1 Q91WT9 (/ISO)

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
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.
5 P32232 (/ISS) Q58H57 (/ISS) Q58H57 (/ISS) Q91WT9 (/ISS) Q9N0V7 (/ISS)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
5 P32232 (/ISS) Q58H57 (/ISS) Q58H57 (/ISS) Q91WT9 (/ISS) Q9N0V7 (/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.
3 P32232 (/TAS) P35520 (/TAS) P35520 (/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.
2 P35520 (/IDA) P35520 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
2 P35520 (/IDA) P35520 (/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 P35520 (/HDA) P35520 (/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 Q91WT9 (/ISO)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q91WT9 (/ISO)
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