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2.A.56.3.4
The 2-ketomonocarboxylate transporter (presented in order of affinity - 2-oxovalerate [highest affinity, KD=0.1 μM], 2-oxoisovalerate, 2-oxobutyrate, 2-oxoisocaproate, 2-oxo-3-methylvalerate, pyruvate [lowest affinity, KD=3 μM]) (Thomas et al., 2006).

Accession Number:D5ATK0
Protein Name:Tripartite ATP-independent periplasmic transporter, DctQ-2 component
Length:190
Molecular Weight:21195.00
Species:Rhodobacter capsulatus (strain ATCC BAA-309 / NBRC 16581 / SB1003) [272942]
Number of TMSs:4
Substrate 3-methyl-2-oxovalerate, 4-methyl-2-oxopentanoic acid, 3-methyl-2-oxobutanoate, pyruvate, 2-oxobutanoate

Cross database links:

Entrez Gene ID: 9004367   
Pfam: PF04290   
KEGG: rcp:RCAP_rcc015   

References (1)

[1] “Complete genome sequence of the photosynthetic purple nonsulfur bacterium Rhodobacter capsulatus SB 1003.”  Strnad H.et.al.   20418398

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MGALLALARV IDRINEFIGK SVSWLILVAV LVSATNAAIR KIFDISSNAW LEAQWYLFGA 
61:	AFLMAAAYTL KQNEHIRIDI VYGAFSRRVQ HWIDLFGHVF FLMPFLVLML WLMFPWLMMS 
121:	VRSGEVSTNS GGLIIWPAKS LLLIGFALLF AQGLSEIIKK IGVMRGLIAD PHTFTGHHGA 
181:	AEAFVEEDGI