Ion transporter superfamily
Identifiers | |
---|---|
Symbol | IT |
Pfam clan | CL0182 |
OPM superfamily | 465 |
OPM protein | 4r1i |
The ion transporter (IT) superfamily is made up of secondary carriers specific for cationic and anionic compounds. Families belonging to the IT superfamily have been characterized base upon (1) the known substrates transported, (2) the modes of transport and energy coupling mechanisms used, (3) the family sizes (in numbers of sequenced protein members in the current NCBI database), (4) the organismal distributions of the members of each family, (5) the size ranges of the constituent proteins, (6) the predicted topologies of these proteins, and (7) the occurrence of non-homologous auxiliary proteins that may either facilitate or be required for transport.[1][2]
Families
As of early 2016, the currently recognized and functionally defined families that make up the IT superfamily include:
- 2.A.8 - The Gluconate:H+ Symporter (GntP) Family
- 2.A.11 - The Citrate-Mg2+:H+ (CitM) Citrate-Ca2+:H+ (CitH) Symporter (CitMHS) Family
- 2.A.13 - The C4-Dicarboxylate Uptake (Dcu) Family
- 2.A.14 - The Lactate Permease (LctP) Family
- 2.A.34 - The NhaB Na+:H+ Antiporter (NhaB) Family
- 2.A.35 - The NhaC Na+:H+ Antiporter (NhaC) Family
- 2.A.45 - The Arsenite-Antimonite (ArsB) Efflux Family
- 2.A.47 - The Divalent Anion:Na+ Symporter (DASS) Family
- 2.A.61 - The C4-dicarboxylate Uptake C (DcuC) Family
- 2.A.62 - The NhaD Na+:H+ Antiporter (NhaD) Family
- 2.A.68 - The p-Aminobenzoyl-glutamate Transporter (AbgT) Family
- 2.A.94 - The Phosphate Permease (Pho1) Family
- 2.A.101 - The Malonate Uptake (MatC) Family
- 2.A.111 - The Na+/H+ Antiporter-E (NhaE) Family
- 2.A.118 - The Basic Amino Acid Antiporter (ArcD) Family
See also
- Ion transporters
- Sodium-Proton antiporter
- Arsenite-Antimonite efflux
- Amino acid transporter
- Solute carrier family
- Transporter Classification Database
- Membrane protein
References
- ↑ Prakash, Shraddha; Cooper, Garret; Singhi, Soumya; Saier, Milton H. (2003-12-03). "The ion transporter superfamily". Biochimica et Biophysica Acta. 1618 (1): 79–92. doi:10.1016/j.bbamem.2003.10.010. ISSN 0006-3002. PMID 14643936.
- ↑ Chen, Jonathan S.; Reddy, Vamsee; Chen, Joshua H.; Shlykov, Maksim A.; Zheng, Wei Hao; Cho, Jaehoon; Yen, Ming Ren; Saier, Milton H. (2011-01-01). "Phylogenetic characterization of transport protein superfamilies: superiority of SuperfamilyTree programs over those based on multiple alignments". Journal of Molecular Microbiology and Biotechnology. 21 (3-4): 83–96. doi:10.1159/000334611. ISSN 1660-2412. PMC 3290041. PMID 22286036.