zeo to B. pseudomallei

and B. mallei [76] pCC1™ Cloning vector, chloramphenicol Selonsertib datasheet learn more resistant epicentre® Illumina® pCCbpaC pCC1 containing the B. pseudomallei DD503 bpaC gene, chloramphenicol resistant This study pCCbpaC.zeo pCCbpaC in which a zeocin resistance cassette was introduced near the middle of the bpaC ORF; chloramphenicol and zeocin resistant This study pCC1.3 pCC1-based plasmid control, does not confer adherence to human epithelial cells; chloramphenicol resistant [77] pKAS46 Mobilizable suicide plasmid; kanamycin resistant [78] pKASbpaC.zeo pKAS46 containing the insert from pCCbpaC.zeo This study pEM7ZEO Source of the zeocin resistance marker Life Technologies™ pELHisBPSL1631-BMA1027 Plasmid expressing aa 392–1068 of B. pseudomallei 1026b BpaC fused to six N-terminal histidine residues, introduced in E. coli TUNER JAK inhibitor and used to purify His-tagged BpaC protein for antibody production and ELISA experiments; chloramphenicol resistant. [67] Escherichia coli was cultured at

37°C using LSLB supplemented with 15 μg/mL chloramphenicol, 50 μg/mL kanamycin, or 50 μg/mL zeocin, where indicated. For conjugation experiments, LSLB was supplemented with 10 mM MgSO4. For assays with E. coli clones carrying pCC1-based plasmids, the CopyControl™ Induction Solution (epicentre® Illumina®) was added to LSLB as previously reported [9]. The cell lines HEp-2 (human laryngeal epithelium; ATCC CCL-23), A549 (type II alveolar epithelium; ATCC CCL85) and J774A.1 (murine macrophages; ATCC TIB-67) were cultured as outlined by

others [5, 55]. Normal human bronchial epithelium (NHBE; LONZA) was expanded, cryopreserved and cultured in an air-liquid interface system as previously described [54, 63, 64]. next The apical surface of the NHBE was exposed to air for a minimum of 3 weeks prior to use in adherence assays to ascertain proper cellular differentiation and the development of functional cilia. Recombinant DNA methodology Standard molecular biology techniques were performed as described elsewhere [79]. Genomic DNA was purified from Burkholderia using the Easy-DNA™ Kit (Life Technologies™). Plasmid DNA was isolated with the QIAprep Spin Miniprep kit (QIAGEN). The Platinum® Pfx DNA Polymerase (Life Technologies™) was used to amplify the 3.8-kb bpaC gene of B. pseudomallei DD503 with primers P1 (5’-ATA CCC AAA TCG GCG TTC TCT GGT-3′) and P2 (5′-TGC GCG AAT CAA TCG AGA TAC CCA-3′) and the PCR product was used as a template in sequencing reactions. The amplicon was also cloned in the vector pCC1™ using the CopyControl™ PCR cloning kit (epicentre® Illumina®), producing the plasmid pCCbpaC (Table  3). The latter was sequenced to determine that PCR did not introduce mutations resulting in aa substitutions in the bpaC gene product. Construction of isogenic mutant strains of B. mallei and B. pseudomallei The plasmid pCCbpaC was digested with the enzyme NsiI (New England BioLabs®, Inc.) to remove a 0.