SUPERFAMILY 1.75 HMM library and genome assignments server

PAP/Archaeal CCA-adding enzyme, C-terminal domain superfamily

SCOP classification
Root:   SCOP hierarchy in SUPERFAMILY [ 0] (11)
Class:   Alpha and beta proteins (a+b) [ 53931] (376)
Fold:   Ferredoxin-like [ 54861] (59)
Superfamily:   PAP/Archaeal CCA-adding enzyme, C-terminal domain [ 55003] (2)
Families:   Poly(A) polymerase, PAP, C-terminal domain [ 55004]
  Archaeal tRNA CCA-adding enzyme [ 102995]


Superfamily statistics
Genomes (649) Uniprot 2014_06 PDB chains (SCOP 1.75)
Domains 1,497 1,547 8
Proteins 1,497 1,547 8


Functional annotation
General category Information
Detailed category Transcription

Document:
Function annotation of SCOP domain superfamilies

Gene Ontology (high-coverage)

(show details)
GO term FDR (all) SDFO level Annotation (direct or inherited)
Biological Process (BP) organic cyclic compound metabolic process 0 Least Informative Direct
Biological Process (BP) heterocycle metabolic process 0 Least Informative Direct
Biological Process (BP) cellular aromatic compound metabolic process 0 Least Informative Direct
Biological Process (BP) nitrogen compound metabolic process 0.000000000000001913 Least Informative Direct
Biological Process (BP) cellular macromolecule metabolic process 0.00000000000008518 Least Informative Direct
Biological Process (BP) RNA metabolic process 0 Moderately Informative Direct
Biological Process (BP) gene expression 0 Moderately Informative Direct
Biological Process (BP) RNA processing 0 Informative Direct
Molecular Function (MF) transferase activity 0 Least Informative Direct
Molecular Function (MF) binding 0.05058 Least Informative Inherited
Molecular Function (MF) transferase activity, transferring phosphorus-containing groups 0 Moderately Informative Direct
Molecular Function (MF) cation binding 0.00001517 Moderately Informative Direct
Molecular Function (MF) nucleotidyltransferase activity 0 Informative Direct
Molecular Function (MF) adenylyltransferase activity 0 Highly Informative Direct
Cellular Component (CC) intracellular organelle part 0.2069 Least Informative Inherited
Cellular Component (CC) intracellular membrane-bounded organelle 0.02359 Least Informative Inherited
Cellular Component (CC) intracellular organelle lumen 0.0005976 Moderately Informative Direct
Cellular Component (CC) nuclear part 0.02982 Moderately Informative Inherited

Document: GO annotation of SCOP domains

Enzyme Commission (EC)

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EC termFDR (all)SDEO levelAnnotation (direct or inherited)
Enzyme Commission (EC)Nucleotidyltransferases0Least InformativeDirect
Enzyme Commission (EC)CCA tRNA nucleotidyltransferase0Highly InformativeDirect
Enzyme Commission (EC)Polynucleotide adenylyltransferase0Highly InformativeDirect

Document: EC annotation of SCOP domains

Arabidopsis Plant Ontology (AP)

(show details)
AP termFDR (all)SDAP levelAnnotation (direct or inherited)
Plant ANatomical entity (PAN)flower0Least InformativeDirect
Plant ANatomical entity (PAN)collective phyllome structure0Least InformativeDirect
Plant ANatomical entity (PAN)megasporophyll0Least InformativeDirect
Plant ANatomical entity (PAN)root system0Least InformativeDirect
Plant ANatomical entity (PAN)microsporophyll0Least InformativeDirect
Plant ANatomical entity (PAN)cardinal part of multi-tissue plant structure0Least InformativeDirect
Plant ANatomical entity (PAN)sporangium0Least InformativeDirect
Plant ANatomical entity (PAN)whole plant0Least InformativeDirect
Plant ANatomical entity (PAN)leaf0Least InformativeDirect
Plant ANatomical entity (PAN)cotyledon0Moderately InformativeDirect
Plant ANatomical entity (PAN)radicle0.00000000003202Highly InformativeDirect

Document: AP annotation of SCOP domains

Enzyme Commission (EC)

(show details)
EC termFDR (all)SDEC levelAnnotation (direct or inherited)
Enzyme Commission (EC)Transferring phosphorous-containing groups0Least InformativeDirect
Enzyme Commission (EC)Nucleotidyltransferases0Moderately InformativeDirect
Enzyme Commission (EC)Polynucleotide adenylyltransferase0Highly InformativeDirect

Document: EC annotation of SCOP domains

UniProtKB KeyWords (KW)

(show details)
KW termFDR (all)SDKW levelAnnotation (direct or inherited)
Biological processtRNA processing0InformativeDirect
Cellular componentNucleus0.0000007899Least InformativeDirect
Molecular functionMetal-binding0Least InformativeDirect
Molecular functionNucleotide-binding0Least InformativeDirect
Molecular functionATP-binding0Moderately InformativeDirect
Molecular functionMagnesium0Moderately InformativeDirect
Molecular functionRNA-binding0Moderately InformativeDirect
Molecular functionManganese0.0000000005745Moderately InformativeDirect
Post-translational modificationTransferase0Least InformativeDirect
Post-translational modificationNucleotidyltransferase0Moderately InformativeDirect

Document: KW annotation of SCOP domains

InterPro annotation
Cross references IPR011068 SSF55003 Protein matches
Abstract

Nucleotidytransferases can be divided into two classes based on highly conserved features of the nucleotidyltransferase motif [PubMed8809016]. Class I enzymes include eukaryotic poly(A) polymerase (PAP), archaeal tRNA CCA-adding enzyme and possibly DNA polymerase beta, while class II enzymes include eukaryotic and eubacterial tRNA CCA-adding enzymes. This entry represents the C-terminal domain of class I nucleotidyltransferases. The C-terminal domain has an alpha/beta sandwich fold, although the archaeal tRNA CCA-adding enzyme has a large insertion; this fold is reminiscent of the RNA-recognition motif fold.

Poly(A) polymerase, the enzyme at the heart of the polyadenylation machinery, is a template-independent RNA polymerase that specifically incorporates ATP at the 3' end of mRNA. In eukaryotes, polyadenylation of pre-mRNA plays an essential role in the initiation step of protein synthesis, as well as in the export and stability of mRNAs. The catalytic domain of poly(A) polymerase shares substantial structural homology with other nucleotidyl transferases such as DNA polymerase beta and kanamycin transferase [PubMed10944102]. The three invariant aspartates of the catalytic triad ligate two of the three active site metals. One of these metals also contacts the adenine ring. Furthermore, conserved, catalytically important residues contact the nucleotide. These contacts, taken together with metal coordination of the adenine base, provide a structural basis for ATP selection by poly(A) polymerase.

The archaeal CCA-adding enzyme builds and repairs the 3 ' end of tRNA. A single active site (nucleotidyltransferase motif) adds both CTP and ATP [PubMed15590678]. This enzyme is the only RNA polymerase that can build or rebuild a specific nucleic acid sequence without using a nucleic acid template.


InterPro database


PDBeMotif information about ligands, sequence and structure motifs
Cross references PDB entries
Ligand binding statistics
Nucleic-acid binding statistics
Occurrence of secondary structure elements
Occurrence of small 3D structural motifs

PDBeMotif resource

Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · Gene Ontology (high-coverage) · Enzyme Commission (EC) · Arabidopsis Plant Ontology (AP) · Enzyme Commission (EC) · UniProtKB KeyWords (KW) ]

Internal database links

Browse genome assignments for this superfamily. The SUPERFAMILY hidden Markov model library has been used to carry out SCOP domain assignments to all genomes at the superfamily level.


Alignments of sequences to 3 models in this superfamily are available by clicking on the 'Alignments' icon above. PDB sequences less than 40% identical are shown by default, but any other sequence(s) may be aligned. Select PDB sequences, genome sequences, or paste in or upload your own sequences.


Browse and view proteins in genomes which have different domain combinations including a PAP/Archaeal CCA-adding enzyme, C-terminal domain domain.


Examine the distribution of domain superfamilies, or families, across the major taxonomic kingdoms or genomes within a kingdom. This gives an immediate impression of how superfamilies, or families, are restricted to certain kingdoms of life.


Explore domain occurrence network where nodes represent genomes and edges are domain architectures (shared between genomes) containing the superfamily of interest.

There are 3 hidden Markov models representing the PAP/Archaeal CCA-adding enzyme, C-terminal domain superfamily. Information on how the models are built, and plots showing hydrophobicity, match emmission probabilities and insertion/deletion probabilities can be inspected.


Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · Gene Ontology (high-coverage) · Enzyme Commission (EC) · Arabidopsis Plant Ontology (AP) · Enzyme Commission (EC) · UniProtKB KeyWords (KW) · Internal database links ]