Table 1 Target genes, oligonucleotide primers and PCR conditions used for detection of antibiotic resistance genes in the MRSA strains isolated from various types of hospital food samples
Target gene | Primer sequence (5′-3′) | PCR product (bp) | PCR programs | PCR volume (50 μL) |
|---|---|---|---|---|
AacA-D | F: TAATCCAAGAGCAATAAGGGC R: GCCACACTATCATAACCACTA | 227 | 1 cycle: 94 0C ------------ 5 min. 25 cycle: 94 0C ------------ 60 s 55 0C ------------ 70 s 72 0C ------------ 60 s 1 cycle: 72 0C ------------ 10 min | 5 μL PCR buffer 10X 1.5 mM Mgcl2 200 μM dNTP (Fermentas) 0.5 μM of each primers F & R 1.25 U Taq DNA polymerase (Fermentas) 2.5 μL DNA template |
ermA | F: AAGCGGTAAACCCCTCTGA R: TTCGCAAATCCCTTCTCAAC | 190 | ||
ermC | F: AATCGTCAATTCCTGCATGT R: TAATCGTGGAATACGGGTTTG | 299 | ||
tetK | F: GTAGCGACAATAGGTAATAGT R: GTAGTGACAATAAACCTCCTA | 360 | ||
vatC | F: AAAATCGATGGTAAAGGTTGGC R: AGTTCTGCAGTACCGGATTTGC | 467 | ||
tetM | F: AGTGGAGCGATTACAGAA R: CATATGTCCTGGCGTGTCTA | 158 | 1 cycle: 94 0C ------------ 6 min. 34 cycle: 95 0C ------------ 50 s 55 0C ------------ 70 s 72 0C ------------ 60 s 1 cycle: 72 0C ------------ 8 min | 5 μL PCR buffer 10X 2 mM Mgcl2 200 μM dNTP (Fermentas) 0.5 μM of each primers F & R 1.5 U Taq DNA polymerase (Fermentas) 5 μL DNA template |
vatA | F: TGGTCCCGGAACAACATTTAT R: TCCACCGACAATAGAATAGGG | 268 | ||
msrA | F: GGCACAATAAGAGTGTTTAAAGG R: AAGTTATATCATGAATAGATTGTCCTGTT | 940 | 1 cycle: 94 0C ------------ 6 min. 34 cycle: 95 0C ------------ 60 s 50 0C ------------ 70 s 72 0C ------------ 70 s 1 cycle: 72 0C ------------ 8 min | 5 μL PCR buffer 10X 2 mM Mgcl2 150 μM dNTP (Fermentas) 0.75 μM of each primers F & R 1.5 U Taq DNA polymerase (Fermentas) 3 μL DNA template |
vatB | F: GCTGCGAATTCAGTTGTTACA R: CTGACCAATCCCACCATTTTA | 136 | 1 cycle: 94 0C ------------ 6 min. 35 cycle: 95 0C ------------ 50 s 55 0C ------------ 70 s 72 0C ------------ 80 s 1 cycle: 72 0C ------------ 10 min | 5 μL PCR buffer 10X 2 mM Mgcl2 150 μM dNTP (Fermentas) 0.75 μM of each primers F & R 1.5 U Taq DNA polymerase (Fermentas) 3 μL DNA template |
linA | F: GGTGGCTGGGGGGTAGATGTATTAACTGG R: GCTTCTTTTGAAATACATGGTATTTTTCGA | 323 | 1 cycle: 94 0C ------------ 6 min. 30 cycle: 95 0C ------------ 60 s 57 0C ------------ 60 s 72 0C ------------ 60 s 1 cycle: 72 0C ------------ 10 min | 5 μL PCR buffer 10X 2 mM Mgcl2 150 μM dNTP (Fermentas) 0.75 μM of each primers F & R 1.5 U Taq DNA polymerase (Fermentas) 3 μL DNA template |