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99  structures 3023  species 8  interactions 6375  sequences 69  architectures

Clan: sPC4_like (CL0609)


PC4-like superfamily Add an annotation

According to SCOP this superfamily contains a helix-swapped dimer of beta(4)-alpha motifs. Members of this superfamily are ssDNA binding domains found transcriptional regulators.

This clan contains 7 families and the total number of domains in the clan is 6375. The clan was built by A Bateman.


This clan contains the following 7 member families:

DUF1818 DUF3276 MRP PC4 PurA SsgA Whirly

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
PC4 (PF02229) 2054 (32.2%) View
SsgA (PF04686) 1835 (28.8%) View
PurA (PF04845) 916 (14.4%) View
DUF3276 (PF11680) 757 (11.9%) View
Whirly (PF08536) 373 (5.9%) View
MRP (PF09387) 274 (4.3%) View
DUF1818 (PF08848) 166 (2.6%) View
Total: 7 Total: 6375 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 8 interactions for this clan. More...

Interacting families
DUF1818 DUF1818
DUF3276 DUF3276
PurA PurA
SsgA SsgA
Whirly Whirly


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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