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Identifiers | |
---|---|
Symbol | APC |
Pfam clan | CL0062 |
ECOD | 5051.1.1 |
TCDB | 2.A.3 |
OPM superfamily | 64 |
The amino acid-polyamine-organocation (APC) superfamily is the second largest superfamily of secondary carrier proteins currently known,[1] and it contains several Solute carriers.[2][3] Originally, the APC superfamily consisted of subfamilies under the transporter classification number (TC # 2.A.3). This superfamily has since been expanded to include eighteen different families.
The most recent families added include the PAAP (Putative Amino Acid Permease), LIVCS (Branched Chain Amino Acid:Cation Symporter), NRAMP (Natural Resistance-Associated Macrophage Protein), CstA (Carbon starvation A protein), KUP (K+ Uptake Permease), BenE (Benzoate:H+ Virginia Symporter), and AE (Anion Exchanger). Bioinformatic and phylogenetic analysis is used to continually expand currently existing families and superfamilies.
Other constituents of the APC superfamily are the AAAP family (TC# 2.A.18), the HAAAP family (TC# 2.A.42) and the LCT family (TC# 2.A.43). Some of these proteins exhibit 11 TMSs. Eukaryotic members of this superfamily have been reviewed by Wipf et al. (2002) [4] and Fischer et al. (1998).[5][6]