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. 2012 Aug 2;7(8):e42404. doi: 10.1371/journal.pone.0042404

Table 1. Cation channel homologues in pathogenic fungi.

Fungus K+ channels Ca2+ channels Trp channels MCU
Saccharomyces cerevisiae TOK1 (NP_012442) (10) (K2P) Cch1 (CAA97244) (24) TrpY1 (NP_014730) (8) NF (−)
Trichophyton rubrum XP_003237995 (9) (K2P) XP_003231641 (22) XP_003238567 (8)XP_003239432 (8) NF (+)
Aspergillus clavatus XP_001268834 (9) (K2P) XP_001270765 (9) (K2P) XP_001269155 (24) XP_001271370 (8)XP_001268228 (8) XP_001271905 (2) (+)
Aspergillus flavus EED45164 (10) (K2P) EED53608 (9) (K2P) EED50022 (24) EED54784 (8) EED53521 (8) EED55359 (2) (+)
Aspergillus fumigatus XP_747058 (8) (K2P) XP_752795 (9) (K2P) XP_754857 (9) (K2P) XP_752476 (24) XP_001481630 (8)XP_751014 (8) XP_751795 (2) (+)
Coccidioides immitis NF XP_001243065 (23) XP_001246339 (8)XP_001240173 (8) NF (+)
Coccidioides posadasii NF XP_003070141 (22) XP_003066800 (8)XP_003069096 (8) NF (+)
Paracoccidioides brasiliensis XP_002791510 (12) (K2P) XP_002794469 (22) XP_002792043 (8)XP_002793104 (8) NF (+)
Candida albicans XP_712779 (9) (K2P) XP_718390 (23) XP_716049 (8)XP_717119 (9) NF (−)
Candida glabrata XP_448924 (9) (K2P) XP_445066 (24) XP_448082 (8) NF (−)
Candida tropicalis XP_002545324 (9) (K2P) XP_002550113 (24) XP_002547405 (8)XP_002547722 (7) NF (−)
Histoplasma capsulatum NF HCEG_02563 (24) HCEG_06995 (8) NF (+)
Blastomyces dermatitidis EGE81330 (8) (K2P) EGE78212 (24) EGE78766 (8)EGE79344 (9) NF (+)
Cryptococcus gattii XP_003191811(10) (K2P) XP_003192344 (6) (Kv) XP_003194030 (24) XP_003191599 (8) XP_003191929 (2) (+)
Cryptococcus neoformans XP_568987 (10) (K2P) XP_569114 (6) (Kv) XP_570175 (24) XP_566850 (8) XP_566527 (2) (+)

Protein accession numbers are shown, except in the case of H. capsulatum for which transcript identifiers are shown (NCBI and Broad Institute of Harvard and MIT, see Methods). MCU denotes the human mitochondrial Ca2+ uniporter (NP_612366). Genes encoding homologues of MCU are also found in the genomes of: the Ascomycota Aspergillus spp., Fusarium spp., Verticillium spp., Chaetomium globosum, Neurospora crassa, Magnaporthe grisea, Botrytis cinerea, Sclerotinia sclerotiorum, Stagonospora nodorum, and Pyrenophora tritici-repentis; the Basidiomycota Cryptococcus spp., C. cinerea and Ustilago maydis; and the Chytridiomycota A. macrogynus and Spizellomyces punctatus. In contrast, genes encoding MCU homologues appear to be absent from the genomes of other fungi such as E. cuniculi, E. intestinalis, E. bineusi, Saccharomyces spp., Schizosaccharomyces spp., Microsporum spp., and other species of Trichophyton. Homologues of MICU1 (NP_006068), the Ca2+-sensing modulatory subunit of MCU, are also encoded by some fungal genomes, including (protein accession number or transcript identifier shown in parentheses): T. rubrum (XP_003233268), A. clavatus (XP_001273355), A. flavus (EED56817), A. fumigatus (XP_748987), C. immitis (XP_001245264), C. posadasii (XP_003071580), P. brasiliensis (XP_002792408), H. capsulatum (HCEG_05324.2), B. dermatitidis (EGE79123.1), C. gattii (XP_003192784) and C. neoformans (XP_569565), but appear to be absent from the other genomes examined. Homologues of the Cch1 auxiliary subunit Mid1 (NP_014108) in S. cerevisiae are also found in the following fungi: T. rubrum (XP_003235133.1), A. clavatus (XP_001273916), A. flavus (EED46777), A. fumigatus (XP_754048), C. immitis (XP_001242343), C. posadasii (XP_003069581), P. brasiliensis (XP_002790830), C. albicans (XP_710963), C. glabrata (XP_449502), C. tropicalis (XP_002551139), H. capsulatum (HCEG_04307.2), B. dermatitidis (BDDG_05843.1), C. gattii (XP_003192201) and C. neoformans (XP_569171). The number of predicted transmembrane domains in each protein is indicated in parentheses. For homologues of K+ channel subunits, the predicted family of K+ channel (K2P or Kv) is also indicated in parentheses. In addition to those shown, Kv channel subunit homologues were also identified in: the Basidiomycota Coprinopsis cinerea (XP_002910836), Laccaria bicolour (XP_001881176), Serpula lacrymans (EGN93868) and Postia placenta (EED81504); the Chytridiomycete Allomyces macrogynus (AMAG_10122.1, AMAG_16737.1, AMAG_16515.1, AMG_06554.1 and AMAG_15091.1); and the Zygomycete Rhizopus oryzae (RO3G_09031.3). The presence (+) or apparent absence (−) of homologues of MICU1 is indicated for each fungal genome, shown in parentheses after the MCU homologue annotation. NF denotes no homologues found.