The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
P-loop containing nucleotide triphosphate hydrolases
".

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 634649: Translation initiation factor if-2

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 20 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
Translation initiation factor activity GO:0003743
Functions in the initiation of ribosome-mediated translation of mRNA into a polypeptide.
5 C6KSR8 (/ISS) M9ND37 (/ISS) M9NFL1 (/ISS) Q54XP6 (/ISS) Q9VZP5 (/ISS)
Translation initiation factor activity GO:0003743
Functions in the initiation of ribosome-mediated translation of mRNA into a polypeptide.
3 Q05D44 (/ISO) Q10251 (/ISO) Q5A782 (/ISO)
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).
3 B2GUV7 (/IPI) O60841 (/IPI) Q8N5A0 (/IPI)
DEAD/H-box RNA helicase binding GO:0017151
Interacting selectively and non-covalently with the enzyme DEAD/H-box RNA helicase.
3 M9ND37 (/TAS) M9NFL1 (/TAS) Q9VZP5 (/TAS)
Translation initiation factor activity GO:0003743
Functions in the initiation of ribosome-mediated translation of mRNA into a polypeptide.
2 O60841 (/IDA) P39730 (/IDA)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
1 O60841 (/IDA)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
1 Q05D44 (/ISO)
Translation initiation factor activity GO:0003743
Functions in the initiation of ribosome-mediated translation of mRNA into a polypeptide.
1 Q5A782 (/IGI)
Translation initiation factor activity GO:0003743
Functions in the initiation of ribosome-mediated translation of mRNA into a polypeptide.
1 Q5B5Z2 (/ISA)
Translation initiation factor activity GO:0003743
Functions in the initiation of ribosome-mediated translation of mRNA into a polypeptide.
1 O60841 (/NAS)
GTPase activity GO:0003924
Catalysis of the reaction: GTP + H2O = GDP + phosphate.
1 P39730 (/IDA)
GTPase activity GO:0003924
Catalysis of the reaction: GTP + H2O = GDP + phosphate.
1 P39730 (/IMP)
GTPase activity GO:0003924
Catalysis of the reaction: GTP + H2O = GDP + phosphate.
1 Q10251 (/ISO)
GTPase activity GO:0003924
Catalysis of the reaction: GTP + H2O = GDP + phosphate.
1 Q54XP6 (/ISS)
GTP binding GO:0005525
Interacting selectively and non-covalently with GTP, guanosine triphosphate.
1 Q10251 (/IC)
GTP binding GO:0005525
Interacting selectively and non-covalently with GTP, guanosine triphosphate.
1 P39730 (/IDA)
GTP binding GO:0005525
Interacting selectively and non-covalently with GTP, guanosine triphosphate.
1 Q586X2 (/ISS)
Translation initiation factor binding GO:0031369
Interacting selectively and non-covalently with a translation initiation factor, any polypeptide factor involved in the initiation of ribosome-mediated translation.
1 P39730 (/IDA)
Ribosome binding GO:0043022
Interacting selectively and non-covalently with any part of a ribosome.
1 P39730 (/IDA)
Glutathione binding GO:0043295
Interacting selectively and non-covalently with glutathione; a tripeptide composed of the three amino acids cysteine, glutamic acid and glycine.
1 Q4WK23 (/IDA)

There are 14 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
Translational initiation GO:0006413
The process preceding formation of the peptide bond between the first two amino acids of a protein. This includes the formation of a complex of the ribosome, mRNA, and an initiation complex that contains the first aminoacyl-tRNA.
5 C6KSR8 (/ISS) M9ND37 (/ISS) M9NFL1 (/ISS) Q54XP6 (/ISS) Q9VZP5 (/ISS)
Maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) GO:0000462
Any process involved in the maturation of a precursor Small SubUnit (SSU) ribosomal RNA (rRNA) molecule into a mature SSU-rRNA molecule from the pre-rRNA molecule originally produced as a tricistronic rRNA transcript that contains the Small Subunit (SSU) rRNA, 5.8S rRNA, and the Large Subunit (LSU) in that order from 5' to 3' along the primary transcript.
1 P39730 (/IMP)
Formation of cytoplasmic translation initiation complex GO:0001732
Joining of the large subunit, with release of IF2/eIF2 and IF3/eIF3. This leaves the functional ribosome at the AUG, with the methionyl/formyl-methionyl-tRNA positioned at the P site.
1 P39730 (/IDA)
Formation of cytoplasmic translation initiation complex GO:0001732
Joining of the large subunit, with release of IF2/eIF2 and IF3/eIF3. This leaves the functional ribosome at the AUG, with the methionyl/formyl-methionyl-tRNA positioned at the P site.
1 P39730 (/IMP)
Cytoplasmic translational initiation GO:0002183
The process preceding formation of the peptide bond between the first two amino acids of a protein in the cytoplasm. This includes the formation of a complex of the ribosome, mRNA, and an initiation complex that contains the first aminoacyl-tRNA.
1 Q10251 (/ISO)
Translational initiation GO:0006413
The process preceding formation of the peptide bond between the first two amino acids of a protein. This includes the formation of a complex of the ribosome, mRNA, and an initiation complex that contains the first aminoacyl-tRNA.
1 Q5A782 (/IGI)
Translational initiation GO:0006413
The process preceding formation of the peptide bond between the first two amino acids of a protein. This includes the formation of a complex of the ribosome, mRNA, and an initiation complex that contains the first aminoacyl-tRNA.
1 Q5B5Z2 (/ISA)
Translational initiation GO:0006413
The process preceding formation of the peptide bond between the first two amino acids of a protein. This includes the formation of a complex of the ribosome, mRNA, and an initiation complex that contains the first aminoacyl-tRNA.
1 Q5A782 (/ISO)
Regulation of translational initiation GO:0006446
Any process that modulates the frequency, rate or extent of translational initiation.
1 O60841 (/IDA)
Regulation of translational initiation GO:0006446
Any process that modulates the frequency, rate or extent of translational initiation.
1 P39730 (/IMP)
Regulation of translational initiation GO:0006446
Any process that modulates the frequency, rate or extent of translational initiation.
1 Q05D44 (/ISO)
Regulation of translational initiation GO:0006446
Any process that modulates the frequency, rate or extent of translational initiation.
1 Q54XP6 (/ISS)
Regulation of translational initiation GO:0006446
Any process that modulates the frequency, rate or extent of translational initiation.
1 O60841 (/NAS)
Ribosome assembly GO:0042255
The aggregation, arrangement and bonding together of the mature ribosome and of its subunits.
1 P39730 (/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
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
4 M9ND37 (/IDA) M9NFL1 (/IDA) Q10251 (/IDA) Q9VZP5 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
3 M9ND37 (/ISS) M9NFL1 (/ISS) Q9VZP5 (/ISS)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 O60841 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q05D44 (/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 O60841 (/TAS)
Plasma membrane GO:0005886
The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
1 F4I420 (/IDA)
Cytoplasmic stress granule GO:0010494
A dense aggregation in the cytosol composed of proteins and RNAs that appear when the cell is under stress.
1 P39730 (/IDA)
Cytosolic small ribosomal subunit GO:0022627
The small subunit of a ribosome located in the cytosol.
1 P39730 (/IDA)
Eukaryotic 48S preinitiation complex GO:0033290
A protein complex composed of the small ribosomal subunit, eIF3, eIF1A, methionyl-initiatior methionine and a capped mRNA. The complex is initially positioned at the 5'-end of the capped mRNA.
1 P39730 (/IDA)