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185  structures 8370  species 0  interactions 29428  sequences 142  architectures

Clan: PRC-barrel (CL0350)


PRC-barrel like superfamily Add an annotation

The PRC-barrel is an all beta barrel domain found in the photosynthetic reaction centre subunit H of the purple bacteria [1].

This clan contains 4 families and the total number of domains in the clan is 29428. The clan was built by RD Finn and P Coggill.

Literature references

  1. Anantharaman V, Aravind L; , Genome Biol 2002;3:RESEARCH0061.: The PRC-barrel: a widespread, conserved domain shared by photosynthetic reaction center subunits and proteins of RNA metabolism. PUBMED:12429060 EPMC:12429060


This clan contains the following 4 member families:


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
PRC (PF05239) 16748 (56.9%) View
tRNA_Me_trans_M (PF20259) 9291 (31.6%) View
CAMSAP_CKK (PF08683) 2673 (9.1%) View
DUF2171 (PF09939) 716 (2.4%) View
Total: 4 Total: 29428 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...



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.

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