Sequence analysis of SO2426 orthologs ClustalW [52] was used to perform a multiple sequence alignment of LY3023414 purchase Shewanella SO2426 orthologs. Conserved signature residues in the receiver domain of click here response regulators were annotated based on reference [53]. The phylogenetic tree was constructed based on protein sequences using maximum parsimony method implemented in PAUP* version 4.0 Beta [54]. The bootstrap values were generated using maximum parsimony. The GenBank accession numbers are as follows:

YP_734035.1, Shewanella sp. MR-4; YP_738119.1Shewanella sp. MR-7; YP_750834.1, Shewanella frigidimarina NCIMB 400; YP_869596.1, Shewanella sp. ANA-3; YP_927593.1, Shewanella amazonensis SB2B; YP_963447.1, Shewanella sp. W3-18-1; ZP_01705802.1, Shewanella putrefaciens 200; YP_001050420.1, Shewanella baltica OS155; YP_001094061.1, Shewanella Autophagy inhibitor cell line loihica PV-4; YP_001366502.1, Shewanella baltica OS185; YP_001474053.1, Shewanella sediminis HAW-EB3; YP_001502091.1, Shewanella pealeana ATCC 700345; YP_001554844.1, Shewanella baltica OS195; ZP_02156174.1, Shewanella benthica KT99; YP_001674438.1, Shewanella halifaxensis HAW-EB4; YP_001760668.1, Shewanella woodyi ATCC 51908; YP_002311920.1, Shewanella piezotolerans WP3; YP_002357973.1, Shewanella baltica OS223; NP_718016.1, Shewanella oneidensis MR-1; and YP_562912.1,

Shewanella denitrificans OS217. Siderophore detection The chrome azurol-S (CAS)-based assay for detection of siderophore production during cellular growth in liquid was performed as described elsewhere [21, 55] with slight modifications Loperamide in culture conditions. Overnight LB cultures of the Δso2426 strain and the wild-type MR-1 strain were used to inoculate fresh

LB broth and allowed to grow to mid-logarithmic phase (OD600 ~ 0.6). The mid-log-phase cultures were amended with 50 μM FeCl3, 80 μM 2,2′-dipyridyl, or 0.3 mM K2CrO4. A control consisting of LB without amendment was prepared for each strain. The cultures were allowed to incubate for 24 h at 30°C with shaking. Aliquots were taken for CAS assay analysis at 0, 2, 4, 6, 8, and 24 h post amendment. Cell-free supernatants were mixed 1:1 with the CAS assay solution and equilibrated at room temperature for 2 h prior to reading the absorbance at 630 nm. The relative production of CAS-reactive siderophores was calculated as described [21] and reported as the average of three independent experiments. Expression and partial purification of recombinant SO2426 protein Bacterial expression vectors were constructed by cloning the full-length SO2426 gene and a shortened form (SO2426sh) in frame with the N-terminal His-tag of pTrcHis (Invitrogen, Carlsbad, CA). Plasmids were transformed into E. coli TOP10 (Invitrogen, Carlsbad, CA) or E. coli ER2508 (New England Biolabs, Ipswich, MA) host cells. Transformants were selected on LB-ampicillin agar plates. Positive clones were verified by sequence analysis at the Purdue Genomics Core Facility.