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252  structures 1401  species 7  interactions 6742  sequences 36  architectures

Clan: HBMR (CL0553)


Helical backbone metal receptor superfamily Add an annotation

This superfamily is characterised by a long alpha helical insertion in the interdomain linker in the Chelatase-like fold. Representative families include the periplasmic ferric siderophore binding proteins, the TroA-like nitrogenase iron-molybdenum proteins and the putative iron(III) transporter family, TM0189-like, or periplasmic-binding family.

This clan contains 2 families and the total number of domains in the clan is 6742. The clan was built by P Coggill.


This clan contains the following 2 member families:

Oxidored_nitro Peripla_BP_2

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
Peripla_BP_2 (PF01497) 4975 (73.8%) View
Oxidored_nitro (PF00148) 1767 (26.2%) View
Total: 2 Total: 6742 Clan alignment

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Family relationships

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

Species distribution

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



There are 7 interactions for this clan. More...

Interacting families
DUF3364 Oxidored_nitro
FecCD Peripla_BP_2
Fer4_NifH Oxidored_nitro
Oxidored_nitro DUF3364
Peripla_BP_2 Peripla_BP_2


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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