Summary: PRC-barrel domain
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The PRC-barrel is an all beta barrel domain found in photosystem reaction centre subunit H of the purple bacteria and RNA metabolism proteins of the RimM group. PRC-barrels are approximately 80 residues long, and found widely represented in bacteria, archaea and plants. This domain is also present at the carboxyl terminus of the pan-bacterial protein RimM, which is involved in ribosomal maturation and processing of 16S rRNA. A family of small proteins conserved in all known euryarchaea are composed entirely of a single stand-alone copy of the domain .
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
Lancaster CR, Michel H; , J Mol Biol 1999;286:883-898.: Refined crystal structures of reaction centres from Rhodopseudomonas viridis in complexes with the herbicide atrazine and two chiral atrazine derivatives also lead to a new model of the bound carotenoid. PUBMED:10024457 EPMC:10024457
External database links
This tab holds annotation information from the InterPro database.
InterPro entry IPR007903
The PRC-barrel is an all beta barrel domain found in photosynthetic reaction centre subunit H of the purple bacteria. PRC-barrels are approximately 80 residues long, and found widely represented in bacteria, archaea and plants. This domain is also present at the C terminus of the pan-bacterial protein RimM, which is involved in ribosomal maturation and processing of 16S rRNA. A family of small proteins conserved in all known euryarchaea are composed entirely of a single stand-alone copy of the domain [PUBMED:12429060].
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Curation and family details
|Seed source:||Aravind L|
|Number in seed:||114|
|Number in full:||6817|
|Average length of the domain:||76.30 aa|
|Average identity of full alignment:||21 %|
|Average coverage of the sequence by the domain:||44.59 %|
|HMM build commands:||
build method: hmmbuild -o /dev/null HMM SEED
search method: hmmsearch -Z 23193494 -E 1000 --cpu 4 HMM pfamseq
|Family (HMM) version:||11|
|Download:||download the raw HMM for this family|
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For those sequences which have a structure in the Protein DataBank, we use the mapping between UniProt, PDB and Pfam coordinate systems from the PDBe group, to allow us to map Pfam domains onto UniProt sequences and three-dimensional protein structures. The table below shows the structures on which the PRC domain has been found. There are 121 instances of this domain found in the PDB. Note that there may be multiple copies of the domain in a single PDB structure, since many structures contain multiple copies of the same protein seqence.
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