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71  structures 626  species 10  interactions 739  sequences 14  architectures

Clan: UcrQ-like (CL0429)


UcrQ-like Add an annotation

The families here include those that are the H and S chains of cytochrome c subunit B1.

This clan contains 2 families and the total number of domains in the clan is 739. The clan was built by RD Finn.


This clan contains the following 2 member families:

Cyt_b-c1_8 UcrQ

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
UcrQ (PF02939) 638 (86.3%) View
Cyt_b-c1_8 (PF10890) 101 (13.7%) View
Total: 2 Total: 739 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 10 interactions for this clan. More...

Interacting families
Cytochrom_B_C UcrQ
Cytochrom_B_N_2 UcrQ
Cytochrom_C1 UcrQ
Peptidase_M16 UcrQ
Peptidase_M16_C UcrQ
UCR_14kD UcrQ
UCR_hinge UcrQ
UcrQ UCR_14kD


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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