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179  structures 960  species 12  interactions 2185  sequences 21  architectures

Clan: ETAP (CL0610)


Electron transport accessory protein superfamily Add an annotation

According to SCOP the domains in this superfamily have an SH3 like barrel fold.

This clan contains 4 families and the total number of domains in the clan is 2185. The clan was built by A Bateman.


This clan contains the following 4 member families:

DHFR_2 FeThRed_A NHase_beta PSI_PsaE

External database links

Domain organisation

Below is a listing of the unique domain organisations or architectures from this clan. More...

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The table below shows the number of occurrences of each domain throughout the sequence database. More...

Pfam family Num. domains Alignment
NHase_beta (PF02211) 1524 (69.7%) View
PSI_PsaE (PF02427) 358 (16.4%) View
FeThRed_A (PF02941) 298 (13.6%) View
DHFR_2 (PF06442) 5 (0.2%) View
Total: 4 Total: 2185 Clan alignment

Please note: Clan alignments can be very large and can cause problems for some browsers. Read the note above before viewing.

Family relationships

This diagram shows the relationships between members of this clan. More...

Species distribution

Tree controls


This tree shows the occurrence of the domains in this clan across different species. More...



There are 12 interactions for this clan. More...

Interacting families
Fer4 PSI_PsaE
Fer4_7 PSI_PsaE
Fer4_9 PSI_PsaE
FeThRed_A FeThRed_B
FeThRed_B FeThRed_A
NHase_alpha NHase_beta
NHase_beta NHase_alpha
PsaA_PsaB PSI_PsaE


For those sequences which have a structure in the Protein DataBank, we use the mapping between UniProt, PDB and Pfam coordinate systems from the MSD group, to allow us to map Pfam domains onto UniProt three-dimensional structures. The table below shows the mapping between the Pfam families in this clan, the corresponding UniProt entries, and the region of the three-dimensional structures that are available for that sequence.

Loading structure mapping...