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9.B.73.1.2 Putative transporter involved in H⁺ extrusion and indirectly CO₂ uptake, CotA. The 3 TMS hydrophobic domain belongs to the CDD CemA family. CotA may be a heme binding protein (Katoh et al., 1996).
Accession Number:	P75028
Protein Name:	PcxA aka CotA aka slr1596
Length:	440
Molecular Weight:	51117.00
Species:	Synechocystis sp. (strain PCC 6803) [1148]
Number of TMSs:	4
Location¹ / Topology² / Orientation³:	Cell inner membrane¹ / Multi-pass membrane protein²
Substrate	hydron, carbon dioxide

RefSeq:	NP_440313.1
Entrez Gene ID:	953612
Pfam:	PF03040
BioCyc:	SSP1148:SLR1596-MONOMER
KEGG:	syn:slr1596
Gene Ontology GO:0016021 C:integral to membrane GO:0005886 C:plasma membrane GO:0015078 F:hydrogen ion transmembrane transporter acti... GO:0015992 P:proton transport
References (5) [1] “cemA homologue essential to CO2 transport in the cyanobacterium Synechocystis PCC6803.” Katoh A.et.al. 8633006 [2] “Size of cotA and identification of the gene product in Synechocystis sp. strain PCC6803.” Sonoda M.et.al. 9190798 [3] “Sequence analysis of the genome of the unicellular cyanobacterium Synechocystis sp. strain PCC6803. II. Sequence determination of the entire genome and assignment of potential protein-coding regions.” Kaneko T.et.al. 8905231 [4] “Absence of light-induced proton extrusion in a cotA-less mutant of Synechocystis sp. strain PCC6803.” Katoh A.et.al. 8808935 [5] “Photosynthetic electron transport involved in PxcA-dependent proton extrusion in Synechocystis sp. Strain PCC6803: effect of pxcA inactivation on CO2, HCO3-, and NO3- uptake.” Sonoda M.et.al. 9683474

UniProt (Universal Protein Resource)
CDD Search (Conserved Domain Database)

Predict TMSs (Predict number of transmembrane segments)

FASTA formatted sequence

1:	MDLTNWWQGA TQWFGRSSQK SLEQAFRSAL KIKEIEDQYF QGKKIGPENC DYSADTVTYF 
61:	ANQIQRHLRK IEQEIYHLNS DQEFVKILSL DPAVKQDPQT EYVLNQLQFI DDILQRYDGE 
121:	LPQVSPPKQI ANGGVLDLPA ITANKQRQIN KKRRDGFQYI RREDTQQKVD TATQKSGVLP 
181:	RSFLRTIDRL KREMDPQSSD TEQKVLKQYR NSRYKTALSI KFVLTLIIVP LLAHQLTKTF 
241:	FLLPSVESFF ERNSEVVFIN QSMETEAYEE LSHFEESLRF RELLGFGEKL SPEAKEEKLA 
301:	EKAKEISESY RRVSTNAIAN IFADIFSLVA FSLVLVNSQR EIEVLKEFID EIVYGLSDSA 
361:	KAFLIILFTD MFVGFHSPHG WEVILASIAR HFGLPENQDF NFLFIATFPV ILDTVFKYWI 
421:	FRYLNSISPS AVATYRNMNE

9.B.73.1.2
Putative transporter involved in H⁺ extrusion and indirectly CO₂ uptake, CotA. The 3 TMS hydrophobic domain belongs to the CDD CemA family. CotA may be a heme binding protein (Katoh et al., 1996).

Cross database links:

Gene Ontology

References (5)

External Searches:

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9.B.73.1.2Putative transporter involved in H+ extrusion and indirectly CO2 uptake, CotA. The 3 TMS hydrophobic domain belongs to the CDD CemA family. CotA may be a heme binding protein (Katoh et al., 1996).

Cross database links:

Gene Ontology

References (5)

External Searches:

Analyze:

9.B.73.1.2
Putative transporter involved in H⁺ extrusion and indirectly CO₂ uptake, CotA. The 3 TMS hydrophobic domain belongs to the CDD CemA family. CotA may be a heme binding protein (Katoh et al., 1996).