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:

"
2-Layer Sandwich
".

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 4: Phosphatidylinositol 5-phosphate 4-kinase type-2 b...

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 10 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).
19 O70172 (/IPI) O70172 (/IPI) P78356 (/IPI) P78356 (/IPI) P78356 (/IPI) P78356 (/IPI) P78356 (/IPI) P78356 (/IPI) P78356 (/IPI) P78356 (/IPI)
(9 more)
1-phosphatidylinositol-4-phosphate 5-kinase activity GO:0016308
Catalysis of the reaction: 1-phosphatidyl-1D-myo-inositol 4-phosphate + ATP = 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate + ADP + 2 H(+).
16 O88370 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA)
(6 more)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
15 P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA)
(5 more)
1-phosphatidylinositol-4-phosphate 5-kinase activity GO:0016308
Catalysis of the reaction: 1-phosphatidyl-1D-myo-inositol 4-phosphate + ATP = 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate + ADP + 2 H(+).
14 P48426 (/NAS) P48426 (/NAS) P48426 (/NAS) P48426 (/NAS) P48426 (/NAS) P48426 (/NAS) P48426 (/NAS) P48426 (/NAS) P48426 (/NAS) P48426 (/NAS)
(4 more)
1-phosphatidylinositol-4-phosphate 5-kinase activity GO:0016308
Catalysis of the reaction: 1-phosphatidyl-1D-myo-inositol 4-phosphate + ATP = 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate + ADP + 2 H(+).
3 Q80XI4 (/ISO) Q80XI4 (/ISO) Q91XU3 (/ISO)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
2 Q80XI4 (/ISO) Q80XI4 (/ISO)
Phosphatidylinositol phosphate kinase activity GO:0016307
Catalysis of the reaction: ATP + a phosphatidylinositol phosphate = ADP + a phosphatidylinositol bisphosphate.
1 Q54DL4 (/ISS)
1-phosphatidylinositol-4-phosphate 5-kinase activity GO:0016308
Catalysis of the reaction: 1-phosphatidyl-1D-myo-inositol 4-phosphate + ATP = 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate + ADP + 2 H(+).
1 B3DJ34 (/IMP)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
1 Q8TBX8 (/IPI)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
1 Q91XU3 (/ISO)

There are 12 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
Phosphatidylinositol biosynthetic process GO:0006661
The chemical reactions and pathways resulting in the formation of phosphatidylinositol, any glycophospholipid in which the sn-glycerol 3-phosphate residue is esterified to the 1-hydroxyl group of 1D-myo-inositol.
30 P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS)
(20 more)
Regulation of autophagy GO:0010506
Any process that modulates the frequency, rate or extent of autophagy. Autophagy is the process in which cells digest parts of their own cytoplasm.
30 P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP)
(20 more)
Regulation of phosphatidylinositol 3-kinase signaling GO:0014066
Any process that modulates the frequency, rate or extent of signal transduction mediated by the phosphatidylinositol 3-kinase cascade.
30 P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS)
(20 more)
Positive regulation of autophagosome assembly GO:2000786
Any process that activates or increases the frequency, rate or extent of autophagic vacuole assembly.
30 P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP)
(20 more)
Phospholipid metabolic process GO:0006644
The chemical reactions and pathways involving phospholipids, any lipid containing phosphoric acid as a mono- or diester.
29 P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS)
(19 more)
Cell surface receptor signaling pathway GO:0007166
A series of molecular signals initiated by activation of a receptor on the surface of a cell. The pathway begins with binding of an extracellular ligand to a cell surface receptor, or for receptors that signal in the absence of a ligand, by ligand-withdrawal or the activity of a constitutively active receptor. The pathway ends with regulation of a downstream cellular process, e.g. transcription.
15 P78356 (/TAS) P78356 (/TAS) P78356 (/TAS) P78356 (/TAS) P78356 (/TAS) P78356 (/TAS) P78356 (/TAS) P78356 (/TAS) P78356 (/TAS) P78356 (/TAS)
(5 more)
Regulation of autophagy GO:0010506
Any process that modulates the frequency, rate or extent of autophagy. Autophagy is the process in which cells digest parts of their own cytoplasm.
5 O70172 (/ISO) O70172 (/ISO) Q80XI4 (/ISO) Q80XI4 (/ISO) Q91XU3 (/ISO)
Positive regulation of autophagosome assembly GO:2000786
Any process that activates or increases the frequency, rate or extent of autophagic vacuole assembly.
5 O70172 (/ISO) O70172 (/ISO) Q80XI4 (/ISO) Q80XI4 (/ISO) Q91XU3 (/ISO)
Megakaryocyte development GO:0035855
The process whose specific outcome is the progression of a megakaryocyte cell over time, from its formation to the mature structure. Megakaryocyte development does not include the steps involved in committing a cell to a megakaryocyte fate. A megakaryocyte is a giant cell 50 to 100 micron in diameter, with a greatly lobulated nucleus, found in the bone marrow.
2 O70172 (/IMP) O70172 (/IMP)
Phosphatidylinositol metabolic process GO:0046488
The chemical reactions and pathways involving phosphatidylinositol, any glycophospholipid in which a sn-glycerol 3-phosphate residue is esterified to the 1-hydroxyl group of 1D-myo-inositol.
2 Q80XI4 (/IDA) Q80XI4 (/IDA)
Phosphatidylinositol biosynthetic process GO:0006661
The chemical reactions and pathways resulting in the formation of phosphatidylinositol, any glycophospholipid in which the sn-glycerol 3-phosphate residue is esterified to the 1-hydroxyl group of 1D-myo-inositol.
1 O88370 (/NAS)
Regulation of muscle organ development GO:0048634
Any process that modulates the frequency, rate or extent of muscle development.
1 B3DJ34 (/IMP)

There are 9 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
Autophagosome GO:0005776
A double-membrane-bounded compartment that engulfs endogenous cellular material as well as invading microorganisms to target them to the lytic vacuole/lysosome for degradation as part of macroautophagy.
30 P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP) P48426 (/IMP)
(20 more)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
30 P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS)
(20 more)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
29 P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS) P48426 (/TAS)
(19 more)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
15 P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA) P78356 (/IDA)
(5 more)
Autophagosome GO:0005776
A double-membrane-bounded compartment that engulfs endogenous cellular material as well as invading microorganisms to target them to the lytic vacuole/lysosome for degradation as part of macroautophagy.
5 O70172 (/ISO) O70172 (/ISO) Q80XI4 (/ISO) Q80XI4 (/ISO) Q91XU3 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
2 Q80XI4 (/ISO) Q80XI4 (/ISO)
Endoplasmic reticulum GO:0005783
The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
1 O88370 (/IDA)
Endoplasmic reticulum GO:0005783
The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
1 Q91XU3 (/ISO)
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 Q8TBX8 (/HDA)
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