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2.A.80.1.1
The tricarboxylate transporter, TctABC (Somers and Kay 1983; Winnen et al. 2003).  The high resolution structure of the receptor, TctC, is known (Sweet et al. 1984).

Accession Number:Q9FA46
Protein Name:TctC aka STM2786
Length:325
Molecular Weight:35480.00
Species:Salmonella enterica [90371]
Number of TMSs:1
Location1 / Topology2 / Orientation3: Cell membrane1 / Multi-pass membrane protein2
Substrate tricarboxylic acid trianion

Cross database links:

RefSeq: NP_461712.1   
Entrez Gene ID: 1254309   
Pfam: PF03401   
BioCyc: STYP99287:STM2786-MONOMER   
KEGG: stm:STM2786   

Gene Ontology

GO:0030288 C:outer membrane-bounded periplasmic space

References (1)

[1] “Complete genome sequence of Salmonella enterica serovar Typhimurium LT2.”  McClelland M.et.al.   11677609

External Searches:

Analyze:

Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MKKQLLRTLT ASILLMSTSV LAQEAPSRTE CIAPAKPGGG FDLTCKLIQV SLLETGAIEK 
61:	PMRVTYMPGG VGAVAYNAIV AQRPGEPGTV VAFSGGSLLN LSQGKFGRYG VDDVRWLASV 
121:	GTDYGMIAVR ADSPWKTLKD LMTAMEKDPN SVVIGAGASI GSQDWMKSAL LAQKANVDPH 
181:	KMRYVAFEGG GEPVTALMGN HVQVVSGDLS EMVPYLGGDK IRVLAVFSEN RLPGQLANIP 
241:	TAKEQGYDLV WPIIRGFYVG PKVSDADYQW WVDTFKKLQQ TDEFKKQRDL RGLFEFDMTG 
301:	QQLDDYVKKQ VTDYREQAKA FGLAK