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:

"
Chitobiase/beta-hexosaminidase domain 2-like
".

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 1: Beta-hexosaminidase subunit beta

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 18 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 homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
5 P07686 (/IDA) P07686 (/IDA) P20060 (/IDA) P20060 (/IDA) Q6AXR4 (/IDA)
Protein heterodimerization activity GO:0046982
Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
5 P06865 (/IDA) P06865 (/IDA) P07686 (/IDA) P07686 (/IDA) Q6AXR4 (/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).
4 P06865 (/IPI) P06865 (/IPI) P07686 (/IPI) P07686 (/IPI)
Acetylglucosaminyltransferase activity GO:0008375
Catalysis of the transfer of an N-acetylglucosaminyl residue from UDP-N-acetyl-glucosamine to a sugar.
4 P06865 (/IDA) P06865 (/IDA) P07686 (/IDA) P07686 (/IDA)
Beta-N-acetylhexosaminidase activity GO:0004563
Catalysis of the hydrolysis of terminal non-reducing N-acetyl-D-hexosamine residues in N-acetyl-beta-D-hexosaminides.
3 P20060 (/IDA) P20060 (/IDA) P29416 (/IDA)
Beta-N-acetylhexosaminidase activity GO:0004563
Catalysis of the hydrolysis of terminal non-reducing N-acetyl-D-hexosamine residues in N-acetyl-beta-D-hexosaminides.
3 P20060 (/IGI) P20060 (/IGI) P29416 (/IGI)
Beta-N-acetylhexosaminidase activity GO:0004563
Catalysis of the hydrolysis of terminal non-reducing N-acetyl-D-hexosamine residues in N-acetyl-beta-D-hexosaminides.
3 P20060 (/IMP) P20060 (/IMP) P29416 (/IMP)
Acetylglucosaminyltransferase activity GO:0008375
Catalysis of the transfer of an N-acetylglucosaminyl residue from UDP-N-acetyl-glucosamine to a sugar.
3 P20060 (/ISO) P20060 (/ISO) P29416 (/ISO)
Protein heterodimerization activity GO:0046982
Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
3 P20060 (/ISO) P20060 (/ISO) P29416 (/ISO)
Beta-N-acetylhexosaminidase activity GO:0004563
Catalysis of the hydrolysis of terminal non-reducing N-acetyl-D-hexosamine residues in N-acetyl-beta-D-hexosaminides.
2 P07686 (/TAS) P07686 (/TAS)
Hexosaminidase activity GO:0015929
Catalysis of the cleavage of hexosamine or N-acetylhexosamine residues (e.g. N-acetylglucosamine) residues from gangliosides or other glycoside oligosaccharides.
2 P20060 (/ISO) P20060 (/ISO)
Beta-N-acetylglucosaminidase activity GO:0016231
Catalysis of the hydrolysis of terminal non-reducing N-acetyl-D-glucosamine residues in N-acetyl-beta-D-glucosaminides.
2 P20060 (/ISO) P20060 (/ISO)
Hydrolase activity GO:0016787
Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
2 P20060 (/IDA) P20060 (/IDA)
Carbohydrate binding GO:0030246
Interacting selectively and non-covalently with any carbohydrate, which includes monosaccharides, oligosaccharides and polysaccharides as well as substances derived from monosaccharides by reduction of the carbonyl group (alditols), by oxidation of one or more hydroxy groups to afford the corresponding aldehydes, ketones, or carboxylic acids, or by replacement of one or more hydroxy group(s) by a hydrogen atom. Cyclitols are generally not regarded as carbohydrates.
2 P20060 (/ISO) P20060 (/ISO)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
2 P20060 (/ISO) P20060 (/ISO)
Hexosaminidase activity GO:0015929
Catalysis of the cleavage of hexosamine or N-acetylhexosamine residues (e.g. N-acetylglucosamine) residues from gangliosides or other glycoside oligosaccharides.
1 Q6AXR4 (/IDA)
Beta-N-acetylglucosaminidase activity GO:0016231
Catalysis of the hydrolysis of terminal non-reducing N-acetyl-D-glucosamine residues in N-acetyl-beta-D-glucosaminides.
1 Q6AXR4 (/IDA)
Carbohydrate binding GO:0030246
Interacting selectively and non-covalently with any carbohydrate, which includes monosaccharides, oligosaccharides and polysaccharides as well as substances derived from monosaccharides by reduction of the carbonyl group (alditols), by oxidation of one or more hydroxy groups to afford the corresponding aldehydes, ketones, or carboxylic acids, or by replacement of one or more hydroxy group(s) by a hydrogen atom. Cyclitols are generally not regarded as carbohydrates.
1 Q6AXR4 (/IDA)

There are 43 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
Glycosphingolipid metabolic process GO:0006687
The chemical reactions and pathways involving glycosphingolipids, any compound with residues of sphingoid and at least one monosaccharide.
4 P06865 (/TAS) P06865 (/TAS) P07686 (/TAS) P07686 (/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.
4 P06865 (/TAS) P06865 (/TAS) P07686 (/TAS) P07686 (/TAS)
Hyaluronan catabolic process GO:0030214
The chemical reactions and pathways resulting in the breakdown of hyaluronan, the naturally occurring anionic form of hyaluronic acid, any member of a group of glycosaminoglycans, the repeat units of which consist of beta-1,4 linked D-glucuronyl-beta-(1,3)-N-acetyl-D-glucosamine.
4 P06865 (/TAS) P06865 (/TAS) P07686 (/TAS) P07686 (/TAS)
Keratan sulfate catabolic process GO:0042340
The chemical reactions and pathways resulting in the breakdown of keratan sulfate, a glycosaminoglycan with repeat units consisting of beta-1,4-linked D-galactopyranosyl-beta-(1,4)-N-acetyl-D-glucosamine 6-sulfate and with variable amounts of fucose, sialic acid and mannose units; keratan sulfate chains are covalently linked by a glycosidic attachment through the trisaccharide galactosyl-galactosyl-xylose to peptidyl-threonine or serine residues.
4 P06865 (/TAS) P06865 (/TAS) P07686 (/TAS) P07686 (/TAS)
Skeletal system development GO:0001501
The process whose specific outcome is the progression of the skeleton over time, from its formation to the mature structure. The skeleton is the bony framework of the body in vertebrates (endoskeleton) or the hard outer envelope of insects (exoskeleton or dermoskeleton).
3 P20060 (/IGI) P20060 (/IGI) P29416 (/IGI)
Angiogenesis GO:0001525
Blood vessel formation when new vessels emerge from the proliferation of pre-existing blood vessels.
3 A2BHD8 (/IMP) A3KNW3 (/IMP) F1QUU0 (/IMP)
Ganglioside catabolic process GO:0006689
The chemical reactions and pathways resulting in the breakdown of ganglioside, a ceramide oligosaccharide carrying, in addition to other sugar residues, one or more sialic residues.
3 P20060 (/IMP) P20060 (/IMP) P29416 (/IMP)
Lysosome organization GO:0007040
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of a lysosome. A lysosome is a cytoplasmic, membrane-bounded organelle that is found in most animal cells and that contains a variety of hydrolases.
3 P20060 (/IGI) P20060 (/IGI) P29416 (/IGI)
Lysosome organization GO:0007040
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of a lysosome. A lysosome is a cytoplasmic, membrane-bounded organelle that is found in most animal cells and that contains a variety of hydrolases.
3 P20060 (/IMP) P20060 (/IMP) P29416 (/IMP)
Sensory perception of sound GO:0007605
The series of events required for an organism to receive an auditory stimulus, convert it to a molecular signal, and recognize and characterize the signal. Sonic stimuli are detected in the form of vibrations and are processed to form a sound.
3 P20060 (/IGI) P20060 (/IGI) P29416 (/IGI)
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.
3 P20060 (/IGI) P20060 (/IGI) P29416 (/IGI)
Lipid storage GO:0019915
The accumulation and maintenance in cells or tissues of lipids, compounds soluble in organic solvents but insoluble or sparingly soluble in aqueous solvents. Lipid reserves can be accumulated during early developmental stages for mobilization and utilization at later stages of development.
3 P20060 (/IMP) P20060 (/IMP) P29416 (/IMP)
Sexual reproduction GO:0019953
A reproduction process that creates a new organism by combining the genetic material of two gametes, which may come from two organisms or from a single organism, in the case of self-fertilizing hermaphrodites, e.g. C. elegans, or self-fertilization in plants. It occurs both in eukaryotes and prokaryotes: in multicellular eukaryotic organisms, an individual is created anew; in prokaryotes, the initial cell has additional or transformed genetic material. In a process called genetic recombination, genetic material (DNA) originating from two gametes join up so that homologous sequences are aligned with each other, and this is followed by exchange of genetic information. After the new recombinant chromosome is formed, it is passed on to progeny.
3 P20060 (/IMP) P20060 (/IMP) P29416 (/IMP)
Glycosaminoglycan metabolic process GO:0030203
The chemical reactions and pathways involving glycosaminoglycans, any one of a group of polysaccharides that contain amino sugars. Formerly known as mucopolysaccharides, they include hyaluronic acid and chondroitin, which provide lubrication in joints and form part of the matrix of cartilage. The three-dimensional structure of these molecules enables them to trap water, which forms a gel and gives glycosaminoglycans their elastic properties.
3 P20060 (/IGI) P20060 (/IGI) P29416 (/IGI)
Myelination GO:0042552
The process in which myelin sheaths are formed and maintained around neurons. Oligodendrocytes in the brain and spinal cord and Schwann cells in the peripheral nervous system wrap axons with compact layers of their plasma membrane. Adjacent myelin segments are separated by a non-myelinated stretch of axon called a node of Ranvier.
3 P20060 (/IGI) P20060 (/IGI) P29416 (/IGI)
Neuromuscular process controlling balance GO:0050885
Any process that an organism uses to control its balance, the orientation of the organism (or the head of the organism) in relation to the source of gravity. In humans and animals, balance is perceived through visual cues, the labyrinth system of the inner ears and information from skin pressure receptors and muscle and joint receptors.
3 P20060 (/IGI) P20060 (/IGI) P29416 (/IGI)
Glycosaminoglycan biosynthetic process GO:0006024
The chemical reactions and pathways resulting in the formation of glycosaminoglycans, any of a group of polysaccharides that contain amino sugars.
2 P06865 (/IDA) P06865 (/IDA)
N-acetylglucosamine metabolic process GO:0006044
The chemical reactions and pathways involving N-acetylglucosamine. The D isomer is a common structural unit of glycoproteins in plants, bacteria and animals; it is often the terminal sugar of an oligosaccharide group of a glycoprotein.
2 P20060 (/ISO) P20060 (/ISO)
Glycosphingolipid metabolic process GO:0006687
The chemical reactions and pathways involving glycosphingolipids, any compound with residues of sphingoid and at least one monosaccharide.
2 P20060 (/IMP) P20060 (/IMP)
Cellular calcium ion homeostasis GO:0006874
Any process involved in the maintenance of an internal steady state of calcium ions at the level of a cell.
2 P20060 (/IGI) P20060 (/IGI)
Cellular calcium ion homeostasis GO:0006874
Any process involved in the maintenance of an internal steady state of calcium ions at the level of a cell.
2 P20060 (/IMP) P20060 (/IMP)
Single fertilization GO:0007338
The union of male and female gametes to form a zygote.
2 P20060 (/IMP) P20060 (/IMP)
Penetration of zona pellucida GO:0007341
The infiltration by sperm of the zona pellucida to reach the oocyte. The process involves digestive enzymes from a modified lysosome called the acrosome, situated at the head of the sperm.
2 P20060 (/IMP) P20060 (/IMP)
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.
2 P20060 (/IMP) P20060 (/IMP)
Male courtship behavior GO:0008049
The behavior of a male, for the purpose of attracting a sexual partner. An example of this process is found in Drosophila melanogaster.
2 P20060 (/IMP) P20060 (/IMP)
Regulation of cell shape GO:0008360
Any process that modulates the surface configuration of a cell.
2 P20060 (/IMP) P20060 (/IMP)
Phospholipid biosynthetic process GO:0008654
The chemical reactions and pathways resulting in the formation of phospholipids, any lipid containing phosphoric acid as a mono- or diester.
2 P20060 (/IMP) P20060 (/IMP)
Oligosaccharide catabolic process GO:0009313
The chemical reactions and pathways resulting in the breakdown of oligosaccharides, molecules with between two and (about) 20 monosaccharide residues connected by glycosidic linkages.
2 P20060 (/IMP) P20060 (/IMP)
Lipid storage GO:0019915
The accumulation and maintenance in cells or tissues of lipids, compounds soluble in organic solvents but insoluble or sparingly soluble in aqueous solvents. Lipid reserves can be accumulated during early developmental stages for mobilization and utilization at later stages of development.
2 P20060 (/IGI) P20060 (/IGI)
Regulation of cellular metabolic process GO:0031323
Any process that modulates the frequency, rate or extent of the chemical reactions and pathways by which individual cells transform chemical substances.
2 P20060 (/IMP) P20060 (/IMP)
Neutrophil degranulation GO:0043312
The regulated exocytosis of secretory granules containing preformed mediators such as proteases, lipases, and inflammatory mediators by a neutrophil.
2 P07686 (/TAS) P07686 (/TAS)
Astrocyte cell migration GO:0043615
The orderly movement of an astrocyte, a class of large neuroglial (macroglial) cells in the central nervous system, the largest and most numerous neuroglial cells in the brain and spinal cord.
2 P20060 (/IMP) P20060 (/IMP)
Cellular protein metabolic process GO:0044267
The chemical reactions and pathways involving a specific protein, rather than of proteins in general, occurring at the level of an individual cell. Includes cellular protein modification.
2 P20060 (/IMP) P20060 (/IMP)
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 P20060 (/IMP) P20060 (/IMP)
Oogenesis GO:0048477
The complete process of formation and maturation of an ovum or female gamete from a primordial female germ cell. Examples of this process are found in Mus musculus and Drosophila melanogaster.
2 P20060 (/IMP) P20060 (/IMP)
Neuromuscular process controlling balance GO:0050885
Any process that an organism uses to control its balance, the orientation of the organism (or the head of the organism) in relation to the source of gravity. In humans and animals, balance is perceived through visual cues, the labyrinth system of the inner ears and information from skin pressure receptors and muscle and joint receptors.
2 P20060 (/IMP) P20060 (/IMP)
Neuromuscular process GO:0050905
Any process pertaining to the functions of the nervous and muscular systems of an organism.
2 P20060 (/IMP) P20060 (/IMP)
Glycosaminoglycan biosynthetic process GO:0006024
The chemical reactions and pathways resulting in the formation of glycosaminoglycans, any of a group of polysaccharides that contain amino sugars.
1 P29416 (/ISO)
N-acetylglucosamine metabolic process GO:0006044
The chemical reactions and pathways involving N-acetylglucosamine. The D isomer is a common structural unit of glycoproteins in plants, bacteria and animals; it is often the terminal sugar of an oligosaccharide group of a glycoprotein.
1 Q6AXR4 (/IDA)
Adult walking behavior GO:0007628
The behavior of an adult relating to the progression of that organism along the ground by the process of lifting and setting down each leg.
1 P29416 (/IMP)
Cell morphogenesis involved in neuron differentiation GO:0048667
The process in which the structures of a neuron are generated and organized. This process occurs while the initially relatively unspecialized cell is acquiring the specialized features of a neuron.
1 P29416 (/IMP)
Neuromuscular process controlling posture GO:0050884
Any process in which an organism voluntarily modulates its posture, the alignment of its anatomical parts.
1 P29416 (/IMP)
SMAD protein signal transduction GO:0060395
The cascade of processes by which a signal interacts with a receptor, causing a change in the activity of a SMAD protein, and ultimately effecting a change in the functioning of the cell.
1 P29416 (/IDA)

There are 12 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
Lysosome GO:0005764
A small lytic vacuole that has cell cycle-independent morphology and is found in most animal cells and that contains a variety of hydrolases, most of which have their maximal activities in the pH range 5-6. The contained enzymes display latency if properly isolated. About 40 different lysosomal hydrolases are known and lysosomes have a great variety of morphologies and functions.
4 P20060 (/IDA) P20060 (/IDA) P29416 (/IDA) Q6AXR4 (/IDA)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
4 P06865 (/HDA) P06865 (/HDA) P07686 (/HDA) P07686 (/HDA)
Azurophil granule GO:0042582
Primary lysosomal granule found in neutrophil granulocytes. Contains a wide range of hydrolytic enzymes and is released into the extracellular fluid.
4 P06865 (/IDA) P06865 (/IDA) P07686 (/IDA) P07686 (/IDA)
Lysosomal lumen GO:0043202
The volume enclosed within the lysosomal membrane.
4 P06865 (/TAS) P06865 (/TAS) P07686 (/TAS) P07686 (/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.
4 P06865 (/HDA) P06865 (/HDA) P07686 (/HDA) P07686 (/HDA)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
3 P20060 (/IDA) P20060 (/IDA) P29416 (/IDA)
Azurophil granule GO:0042582
Primary lysosomal granule found in neutrophil granulocytes. Contains a wide range of hydrolytic enzymes and is released into the extracellular fluid.
3 P20060 (/ISO) P20060 (/ISO) P29416 (/ISO)
Acrosomal vesicle GO:0001669
A structure in the head of a spermatozoon that contains acid hydrolases, and is concerned with the breakdown of the outer membrane of the ovum during fertilization. It lies just beneath the plasma membrane and is derived from the lysosome.
2 P20060 (/IDA) P20060 (/IDA)
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.
2 P07686 (/TAS) P07686 (/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.
2 P20060 (/IDA) P20060 (/IDA)
Lysosome GO:0005764
A small lytic vacuole that has cell cycle-independent morphology and is found in most animal cells and that contains a variety of hydrolases, most of which have their maximal activities in the pH range 5-6. The contained enzymes display latency if properly isolated. About 40 different lysosomal hydrolases are known and lysosomes have a great variety of morphologies and functions.
2 P20060 (/ISO) P20060 (/ISO)
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.
2 P07686 (/TAS) P07686 (/TAS)