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Ctag/Cox11 superfamily

SCOP classification
Root:   SCOP hierarchy in SUPERFAMILY [ 0] (11)
Class:   All beta proteins [ 48724] (174)
Fold:   Ctag/Cox11 [ 110110]
Superfamily:   Ctag/Cox11 [ 110111]
Families:   Ctag/Cox11 [ 110112]

 Superfamily statistics
Genomes (797) Uniprot 2013_05 PDB chains (SCOP 1.75)
Domains 893 1,321 1
Proteins 893 1,320 1

 Functional annotation
General category General
Detailed category Ion binding

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) cellular component organization or biogenesis 0.0005451 Least Informative Direct
Biological Process (BP) cellular component biogenesis 0.006662 Moderately Informative Inherited
Biological Process (BP) macromolecular complex subunit organization 0.001101 Moderately Informative Inherited
Cellular Component (CC) cytoplasmic part 0.002525 Least Informative Inherited
Cellular Component (CC) intracellular membrane-bounded organelle 0.01694 Least Informative Inherited

Document: GO annotation of SCOP domains

UniProtKB KeyWords (KW)

(show details)
KW termFDR (all)SDKW levelAnnotation (direct or inherited)
Cellular componentMembrane0Least InformativeDirect
Cellular componentMitochondrion2.669e-05Moderately InformativeDirect
Cellular componentCell membrane2.95e-05Moderately InformativeDirect
Cellular componentCell inner membrane0InformativeDirect
Cellular componentMitochondrion inner membrane3.39e-11InformativeDirect
DomainTransmembrane0Least InformativeDirect
DomainSignal-anchor0Moderately InformativeDirect
Molecular functionCopper0InformativeDirect

Document: KW annotation of SCOP domains

InterPro annotation
Cross references IPR007533 SSF110111 Protein matches
Abstract Cytochrome c oxidase assembly protein is essential for the assembly of functional cytochrome oxidase protein. In eukaryotes it is an integral protein of the mitochondrial inner membrane. Cox11 is essential for the insertion of Cu(I) ions to form the CuB site. This is essential for the stability of other structures in subunit I, for example haems a and a3, and the magnesium/manganese centre. Cox11 is probably only required in sub-stoichiometric amounts relative to the structural units [PubMed10617659]. The C-terminal region of the protein is known to form a dimer. Each monomer coordinates one Cu(I) ion via three conserved cysteine residues (111, 208 and 210) in Saccharomyces cerevisiae . Met 224 is also thought to play a role in copper transfer or stabilising the copper site [PubMed12063264].

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) · 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 1 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 Ctag/Cox11 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 1 hidden Markov models representing the Ctag/Cox11 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) · UniProtKB KeyWords (KW) · Internal database links ]
Please cite: Gough, J., Karplus, K., Hughey, R. and Chothia, C. (2001). "Assignment of Homology to Genome Sequences using a Library of Hidden Markov Models that Represent all Proteins of Known Structure." J. Mol. Biol., 313(4), 903-919.

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© Copyright 2013 The SUPERFAMILY authors and Julian Gough.