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Table 2 Primers used in this study

From: Regulatory elements involved in the expression of competence genes in naturally transformable Vibrio cholerae

Primer name

Sequence

Description

(in 5′ to 3′ direction)

Rev[VC1917]-NotI

GCGGCCGCGAGCTCTAGAGGTTTCTTAG

For inverse PCR leading to plasmids:

pBR-[−700]comEA,

pBR-[−500]comEA,

pBR-[−300]comEA,

pBR-[−100]comEA,

pBR-[−40]comEA

Fwd[VC1917]-700

AGAGCTCGCGGCCGCAGGTGTTAACCACTCCTGCGGTAC

Inverse PCR to generate

pBR-[−700]comEA

Fwd[VC1917]-500

AGAGCTCGCGGCCGCCAACAAGCACTTGAACTGGGTAAC

Inverse PCR to generate

pBR-[−500]comEA

Fwd[VC1917]-300

AGAGCTCGCGGCCGCTATCGTTGTGATTGAGTTGAGC

Inverse PCR to generate

pBR-[−300]comEA

VC1917-134-NotI

GCGGCGGCCGCATTCTTAGTGTAATTGATATG

PCR to generate

pBR-TET_MCS after

ATCATGCGCACCCGTGGCCAGGACCC

pBR[−134]comEA,

Fwd[VC1917]-100

AGAGCTCGCGGCCGCGGGCTACAGCAGTAGCCCGTTC

Inverse PCR to generate

pBR[−100]comEA

Fwd[VC1917]-40

AGAGCTCGCGGCCGCCGCTATCATAAGCCCTCAACAAC

Inverse PCR to generate

pBR[−40]comEA

gyrA-157-fwd

AATGTGCTGGGCAACGACTG

qRT-PCR for gyrA transcription [10]

gyrA_332_bwd

GAGCCAAAGTTACCTTGGCC

comEA_50_fwd

CGACATTACCGTTACTGGCC

qRT-PCR for comEA transcription [10]

comEA_224_bwd

CCGTTGGCTTCTCGATAATCG

comEC_1029_fwd

GGTCGCGATTGTTCTCTACC

qRT-PCR for comEC transcription [10]

comEC_1186_bwd

CCAAATTGTACAGAACTGCCG

VC0396_188_fwd

GCCTGATTCGCCAGCAATTG

qRT-PCR for qstR transcription [22]

VC0396_356_bwd

CCAAGACCGTGGGCAATAAAG

hapR-230-fwd

CCAACTTCTTGACCGATCAC

qRT-PCR for hapR transcription [22]

hapR-399-bwd

GGTGGAAACAAACAGTGGCC

hapA_175_fwd

ACGGTACAGTTGCCGAATGG

qRT-PCR for hapA transcription [22]

hapA_358_bwd

GCTGGCTTTCAATGTCAGGG

comEA_284_rev

CGCACTGTCGCTTCACCAATCC

5′RACE: synthesis of first strand cDNA of comEA

comEA_217_rev

CTTCTCGATAATCGACAATGGCCTGAGC

5′RACE: PCR amplification of Poly(A) cDNA comEA

oligo dT-Anchor primer (Roche)

GACCACGCGTATCGATGTCGAC

F-EcoRI_Anchor_P

CCAAGAATTCGACCACGCGTATCGATGTCGAC

5′RACE: PCR fragment of Poly(A) cDNA comEA cloned into plasmid pBR-Tet_MCSI

R-BamHI_comEA_217

CCAAGGATCCCTTCTCGATAATCGACAATGGCCTGAGC

T7RNA-pol-750-down

GCTGAGGCTATCGCAACCCGTGC

DNA uptake assay: amplification of donor DNA; primer specific for E. coli BL21(DE3); [9],[13]

T7 RNAP-end-bw

TTACGCGAACGCGAAGTCCGACTCTAAG

lacZ-missing-fw

GCCGACTTTCCAATGATCCACAATGGG

DNA uptake assay: amplification of acceptor DNA; primer specific for V. cholerae A1552 and lacZ+ derivatives of it; [9],[13]

lacZ-missing-bw

CCCTCGCTATCCCATTTGGAAATGCC