Bacterial transport of sulfate, molybdate, and related oxyanions

被引:161
|
作者
Aguilar-Barajas, Esther [1 ]
Diaz-Perez, Cesar [1 ]
Ramirez-Diaz, Martha I. [1 ]
Riveros-Rosas, Hector [2 ]
Cervantes, Carlos [1 ]
机构
[1] Univ Michoacana, Inst Invest Quim Biol, Morelia 58030, Michoacan, Mexico
[2] Univ Nacl Autonoma Mexico, Fac Med, Dept Bioquim, Mexico City 04510, DF, Mexico
关键词
Sulfate permeases; Molybdate transport; Tungsten transport; Selenate transport; Chromate transport; CHROMATE RESISTANCE DETERMINANT; TRANSCRIPTIONAL REGULATOR MODE; RESOLUTION CRYSTAL-STRUCTURE; ESCHERICHIA-COLI K-12; IN-VITRO INTERACTIONS; BINDING-PROTEIN MOP; SALMONELLA-TYPHIMURIUM; PHOSPHATE TRANSPORTER; PSEUDOMONAS-AERUGINOSA; MOLYBDENUM TRANSPORT;
D O I
10.1007/s10534-011-9421-x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Sulfur is an essential element for microorganisms and it can be obtained from varied compounds, sulfate being the preferred source. The first step for sulfate assimilation, sulfate uptake, has been studied in several bacterial species. This article reviews the properties of different bacterial (and archaeal) transporters for sulfate, molybdate, and related oxyanions. Sulfate uptake is carried out by sulfate permeases that belong to the SulT (CysPTWA), SulP, CysP/(PiT), and CysZ families. The oxyanions molybdate, tungstate, selenate and chromate are structurally related to sulfate. Molybdate is transported mainly by the high-affinity ModABC system and tungstate by the TupABC and WtpABC systems. CysPTWA, ModABC, TupABC, and WtpABC are homologous ATP-binding cassette (ABC)-type transporters with similar organization and properties. Uptake of selenate and chromate oxyanions occurs mainly through sulfate permeases.
引用
收藏
页码:687 / 707
页数:21
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