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Housley, Nicole A; Winkler, Herbert H; Audia, Jonathon P (2011) The Rickettsia prowazekii ExoU homologue possesses phospholipase A1 (PLA1), PLA2, and lyso-PLA2 activities and can function in the absence of any eukaryotic cofactors in vitro. J Bacteriol 193:4634-42
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Audia, Jonathon P; Winkler, Herbert H (2006) Study of the five Rickettsia prowazekii proteins annotated as ATP/ADP translocases (Tlc): Only Tlc1 transports ATP/ADP, while Tlc4 and Tlc5 transport other ribonucleotides. J Bacteriol 188:6261-8
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Audia, Jonathon P; Roberts, Rosemary A W; Winkler, Herbert H (2006) Cysteine-scanning mutagenesis and thiol modification of the Rickettsia prowazekii ATP/ADP translocase: characterization of TMs IV-VII and IX-XII and their accessibility to the aqueous translocation pathway. Biochemistry 45:2648-56
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Alexeyev, Mikhail F; Roberts, Rosemary A W; Daugherty, Robin M et al. (2004) Cysteine-scanning mutagenesis and thiol modification of the Rickettsia prowazekii ATP/ADP translocase: evidence that transmembrane regions I and II, but not III, are structural components of the aqueous translocation channel. Biochemistry 43:6995-7002
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Daugherty, Robin M; Linka, Nicole; Audia, Jonathon P et al. (2004) The nucleotide transporter of Caedibacter caryophilus exhibits an extended substrate spectrum compared to the analogous ATP/ADP translocase of Rickettsia prowazekii. J Bacteriol 186:3262-5
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Linka, Nicole; Hurka, Herbert; Lang, B Franz et al. (2003) Phylogenetic relationships of non-mitochondrial nucleotide transport proteins in bacteria and eukaryotes. Gene 306:27-35
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Schwoppe, Christian; Winkler, Herbert H; Neuhaus, H Ekkehard (2003) Connection of transport and sensing by UhpC, the sensor for external glucose-6-phosphate in Escherichia coli. Eur J Biochem 270:1450-7
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Winkler, Herbert H; Daugherty, Robin M; Audia, Jonathon P (2003) Cysteine-scanning mutagenesis and thiol modification of the Rickettsia prowazekii ATP/ADP translocase: evidence that TM VIII faces an aqueous channel. Biochemistry 42:12562-9
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Alexeyev, Mikhail F; Winkler, Herbert H (2002) Complete replacement of basic amino acid residues with cysteines in Rickettsia prowazekii ATP/ADP translocase. Biochim Biophys Acta 1565:136
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Schwoppe, Christian; Winkler, Herbert H; Neuhaus, H Ekkehard (2002) Properties of the glucose-6-phosphate transporter from Chlamydia pneumoniae (HPTcp) and the glucose-6-phosphate sensor from Escherichia coli (UhpC). J Bacteriol 184:2108-15
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