Summary
Transporter-like superfamily, four TM region
Members of this superfamily normally carry four transmembrane regions, which in many instances associate into hexameric structures. They are frequently involved in gap-junction formation between cells or in forming pores linking the cytosol with the extracellular space [1,2]. Some of them are transporters proteins, including members of the TCDB superfamilies 1.A.24 and 1.A.25.
This clan contains 14 families and the total number of domains in the clan is 42618. The clan was built by A Bateman.
Literature references
- Hua VB, Chang AB, Tchieu JH, Kumar NM, Nielsen PA, Saier MH Jr;, J Membr Biol. 2003;194:59-76.: Sequence and phylogenetic analyses of 4 TMS junctional proteins of animals: connexins, innexins, claudins and occludins. PUBMED:14502443 EPMC:14502443
- Abascal F, Zardoya R;, Bioessays. 2012;34:551-560.: LRRC8 proteins share a common ancestor with pannexins, and may form hexameric channels involved in cell-cell communication. PUBMED:22532330 EPMC:22532330
Members
This clan contains the following 14 member families:
Amastin Atthog Claudin_2 Claudin_3 Clc-like Connexin Fig1 GSG-1 Innexin L_HMGIC_fpl Pannexin_like PMP22_Claudin SUR7 TMEM127External database links
Transporter classification: | 1.A.24 1.A.25 |
Domain organisation
Below is a listing of the unique domain organisations or architectures from this clan. More...
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Alignments
The table below shows the number of occurrences of each domain throughout the sequence database. More...
Pfam family | Num. domains | Alignment |
---|---|---|
PMP22_Claudin (PF00822) | 13029 (30.6%) | View |
Connexin (PF00029) | 7511 (17.6%) | View |
Claudin_2 (PF13903) | 4802 (11.3%) | View |
Innexin (PF00876) | 4788 (11.2%) | View |
SUR7 (PF06687) | 4079 (9.6%) | View |
L_HMGIC_fpl (PF10242) | 2826 (6.6%) | View |
Pannexin_like (PF12534) | 1682 (3.9%) | View |
GSG-1 (PF07803) | 1113 (2.6%) | View |
Fig1 (PF12351) | 749 (1.8%) | View |
Atthog (PF18800) | 520 (1.2%) | View |
Amastin (PF07344) | 455 (1.1%) | View |
Clc-like (PF07062) | 447 (1.0%) | View |
TMEM127 (PF20517) | 374 (0.9%) | View |
Claudin_3 (PF06653) | 243 (0.6%) | View |
Total: 14 | Total: 42618 | 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
HideThis tree shows the occurrence of the domains in this clan across different species. More...
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Structures
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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