Crystal structure of a TRAP periplasmic solute binding protein from Desulfovibrio salexigens (Desal_2161), Target EFI-510109, with bound orotic acid

Experimental strategies for functional annotation and metabolism discovery: targeted screening of solute binding proteins and unbiased panning of metabolomes.

TRAP dicarboxylate transporter, DctP subunit

MKFFGRIVTVALALCMVMGGVISANAAKYEARIGHLESPLQPRHQGLEKVAKLVKERTNGEVEFKIFPSSQLGNQRQMNE
GVQFGTIEGTVSAAAFLGGFNPVVSIMDIPFLLPVDRAKAQELRQGKFGKALLKSFDSRGFKAIATWPNGRKNFTSNKPI
STIADYKGQSFRVMDSKILIEQFAAIGASAIALPFGELYTALQNGVVDGEENPLDTIQRMKFYEVQKYLVTSEHGAMEDY
VLFNPSYWESLPENYQKIIVDTFIEVMPGVEAHKEQAQKDALEVIKKAGVQVTPLQAADRAAMRELMYPKTKAAYLARAG
AQGQELIKLYEEEYARIVKAENLYFQGHHHHHHHHHH

40.2 mg/mL protein in 10 mM HEPES, pH 7.5, 5 mM DTT, reservoir: MCSG1(H9) (0.1 M Bis-Tris, pH 5.5, 25% w/v PEG3350), cryoprotection: 4:1 50% w/v PEG3350:reservoir, ligand copurified with protein, VAPOR DIFFUSION, SITTING DROP, temperature 298K

STRUCTURE SOLVED INITIALLY IN SAME CRYSTAL FORM SOAKED WITH SODIUM IODIDE AND SAD PHASED

TRAP periplasmic solute binding family, Enzyme Function Initiative, EFI, structural genomics, TRANSPORT PROTEIN

MKFFGRIVTVALALCMVMGGVISANAAKYEARIGHLESPLQPRHQGLEKVAKLVKERTNGEVEFKIFPSSQLGNQRQMNE
GVQFGTIEGTVSAAAFLGGFNPVVSIMDIPFLLPVDRAKAQELRQGKFGKALLKSFDSRGFKAIATWPNGRKNFTSNKPI
STIADYKGQSFRVMDSKILIEQFAAIGASAIALPFGELYTALQNGVVDGEENPLDTIQRMKFYEVQKYLVTSEHGAMEDY
VLFNPSYWESLPENYQKIIVDTFIEVMPGVEAHKEQAQKDALEVIKKAGVQVTPLQAADRAAMRELMYPKTKAAYLARAG
AQGQELIKLYEEEYARIVK