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:

"
Phosphorylase Kinase; domain 1
".

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 774: Serine/threonine-protein kinase SSN3

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 5 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 kinase activity GO:0004672
Catalysis of the phosphorylation of an amino acid residue in a protein, usually according to the reaction: a protein + ATP = a phosphoprotein + ADP.
2 P39073 (/HDA) P39073 (/HDA)
Cyclin-dependent protein serine/threonine kinase activity GO:0004693
Catalysis of the reactions: ATP + protein serine = ADP + protein serine phosphate, and ATP + protein threonine = ADP + protein threonine phosphate. This reaction requires the binding of a regulatory cyclin subunit and full activity requires stimulatory phosphorylation by a CDK-activating kinase (CAK).
2 P39073 (/IDA) P39073 (/IDA)
Cyclin-dependent protein serine/threonine kinase activity GO:0004693
Catalysis of the reactions: ATP + protein serine = ADP + protein serine phosphate, and ATP + protein threonine = ADP + protein threonine phosphate. This reaction requires the binding of a regulatory cyclin subunit and full activity requires stimulatory phosphorylation by a CDK-activating kinase (CAK).
2 P39073 (/ISS) P39073 (/ISS)
RNA polymerase II CTD heptapeptide repeat kinase activity GO:0008353
Catalysis of the reaction: ATP + (DNA-directed RNA polymerase II) = ADP + phospho-(DNA-directed RNA polymerase II); phosphorylation occurs on residues in the carboxy-terminal domain (CTD) repeats.
2 P39073 (/IDA) P39073 (/IDA)
RNA polymerase II CTD heptapeptide repeat kinase activity GO:0008353
Catalysis of the reaction: ATP + (DNA-directed RNA polymerase II) = ADP + phospho-(DNA-directed RNA polymerase II); phosphorylation occurs on residues in the carboxy-terminal domain (CTD) repeats.
2 P39073 (/IMP) P39073 (/IMP)

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
Negative regulation of transcription by RNA polymerase II GO:0000122
Any process that stops, prevents, or reduces the frequency, rate or extent of transcription mediated by RNA polymerase II.
2 P39073 (/IMP) P39073 (/IMP)
Negative regulation of transcription by RNA polymerase II GO:0000122
Any process that stops, prevents, or reduces the frequency, rate or extent of transcription mediated by RNA polymerase II.
2 P39073 (/IPI) P39073 (/IPI)
Positive regulation of transcription from RNA polymerase II promoter by galactose GO:0000435
Any process involving galactose that activates or increases the rate of transcription from an RNA polymerase II promoter.
2 P39073 (/IMP) P39073 (/IMP)
Protein phosphorylation GO:0006468
The process of introducing a phosphate group on to a protein.
2 P39073 (/HDA) P39073 (/HDA)
Protein phosphorylation GO:0006468
The process of introducing a phosphate group on to a protein.
2 P39073 (/IMP) P39073 (/IMP)
Protein destabilization GO:0031648
Any process that decreases the stability of a protein, making it more vulnerable to degradative processes or aggregation.
2 P39073 (/IMP) P39073 (/IMP)
Negative regulation of filamentous growth GO:0060258
Any process that decreases the frequency, rate or extent of the process in which a multicellular organism or a group of unicellular organisms grow in a threadlike, filamentous shape.
2 P39073 (/IGI) P39073 (/IGI)
Negative regulation of filamentous growth GO:0060258
Any process that decreases the frequency, rate or extent of the process in which a multicellular organism or a group of unicellular organisms grow in a threadlike, filamentous shape.
2 P39073 (/IMP) P39073 (/IMP)
Nuclear-transcribed mRNA catabolic process, non-stop decay GO:0070481
The chemical reactions and pathways resulting in the breakdown of the transcript body of a nuclear-transcribed mRNA that is lacking a stop codon.
2 P39073 (/IMP) P39073 (/IMP)
Phosphorylation of RNA polymerase II C-terminal domain GO:0070816
The process of introducing a phosphate group on to an amino acid residue in the C-terminal domain of RNA polymerase II. Typically, this occurs during the transcription cycle and results in production of an RNA polymerase II enzyme where the carboxy-terminal domain (CTD) of the largest subunit is extensively phosphorylated, often referred to as hyperphosphorylated or the II(0) form. Specific types of phosphorylation within the CTD are usually associated with specific regions of genes, though there are exceptions. The phosphorylation state regulates the association of specific complexes such as the capping enzyme or 3'-RNA processing machinery to the elongating RNA polymerase complex.
2 P39073 (/IDA) P39073 (/IDA)
Phosphorylation of RNA polymerase II C-terminal domain GO:0070816
The process of introducing a phosphate group on to an amino acid residue in the C-terminal domain of RNA polymerase II. Typically, this occurs during the transcription cycle and results in production of an RNA polymerase II enzyme where the carboxy-terminal domain (CTD) of the largest subunit is extensively phosphorylated, often referred to as hyperphosphorylated or the II(0) form. Specific types of phosphorylation within the CTD are usually associated with specific regions of genes, though there are exceptions. The phosphorylation state regulates the association of specific complexes such as the capping enzyme or 3'-RNA processing machinery to the elongating RNA polymerase complex.
2 P39073 (/IMP) P39073 (/IMP)

There are 1 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
Mediator complex GO:0016592
A protein complex that interacts with the carboxy-terminal domain of the largest subunit of RNA polymerase II and plays an active role in transducing the signal from a transcription factor to the transcriptional machinery. The mediator complex is required for activation of transcription of most protein-coding genes, but can also act as a transcriptional corepressor. The Saccharomyces complex contains several identifiable subcomplexes: a head domain comprising Srb2, -4, and -5, Med6, -8, and -11, and Rox3 proteins; a middle domain comprising Med1, -4, and -7, Nut1 and -2, Cse2, Rgr1, Soh1, and Srb7 proteins; a tail consisting of Gal11p, Med2p, Pgd1p, and Sin4p; and a regulatory subcomplex comprising Ssn2, -3, and -8, and Srb8 proteins. Metazoan mediator complexes have similar modular structures and include homologs of yeast Srb and Med proteins.
2 P39073 (/IDA) P39073 (/IDA)