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3.A.1.4.12
ABC-type uptake porter for pyruvate and monocarboxylate 2-oxo acids.  Pyruvate uptake has been measured and is inhibited by monocarboxylate 2-oxo-acids such as 2-oxobutyrate, 2-oxovalerate, 2-oxoisovalerate, 2-oxoisocaproate and 2-oxo 3-methylvalerate which are probably substrates (Pernil et al. 2010). 

Accession Number:Q8YU26
Protein Name:Branched-chain amino-acid ABC transport system periplasmic binding protein
Length:268
Molecular Weight:29196.00
Species:Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576) [103690]
Substrate 3-methyl-2-oxovalerate, 2-oxopentanoate, pyruvate, 2-oxobutanoate

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FASTA formatted sequence
1:	MIGPSNTAKG IPEIGDYVAR VSAPVSVVAP NSVKAALKQN PNIKKVAVFF AQNDAFSKSE 
61:	TEIFQQTIKE QGLELVTVQK FQTTDTDFQS QATNAINLKP DLVIISGLAA DGGNLVRQLR 
121:	ELGYQGAIIG GNGLNTSNVF AVCKALCDGV LIAQAYSPEY TGEINKAFRQ AYVDQYKKEP 
181:	PQFSAQAFAA VQVYVESLKA LDSMNKVSKI QLPELRTELN KQLLTGKYNT PLGEISFTPI 
241:	GEVVQQDFYV AQIKMEKDGS QGKFTFLK