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Table 1 Characteristics and bla locus allotypes of the MRSA strains used in this study

From: Evidence for a purifying selection acting on the β-lactamase locus in epidemic clones of methicillin-resistant Staphylococcus aureus

Clonal complex a) MLST (ST) SCCmectype Strain Isolation origin Isolation year blalocus alleles Ref.
       blaZ blaI blaR1  
  247 I E2125 Denmark 1964 1 ND ND [30, 31]
  247 IA HPV107 Portugal 1992 1 ND ND [30, 32]
  247 IA BK1953 USA 1995 1 ND ND [30, 33]
  250 I COL UK 1965 -    [30]
  250 I BK793 Egypt 1961 1 1 1 [30, 34]
  250 IA PER34 Spain 1989 1 ND ND [30, 35]
  239 III ANS46 Australia 1982 1 1 1 [30, 36]
  239 IIIA HU25 Brazil 1993 1 ND ND [30, 37]
  239 IIIA HUSA304 Hungary 1993 1 ND ND [30, 38]
8 239 IIIA BK2421 USA 1996 1 ND ND [30, 34]
  8 IVa USA300 USA 1995-2003 8 4 9 [39, 40]
  8 IVa USA500 USA 1995-2003 1 ND ND [39, 40]
  8 IVd BK2529 USA 1996 1 ND ND [30, 34, 39]
  8 IVd BargII17 USA 1996 1 ND ND [30, 39, 41]
  8 IVE AR43/3330.1 Ireland 1988-2002 1 1 1 [42]
  8 IVh GRE120 Greece 1993 1 ND ND [39, 43]
  72 IVa USA700 USA 1995-2003 9 - 4 [39, 40]
  254 IVh HAR36 Greece 2002 1 1 1 [39, 44]
  770 IVb 8/6-3P Chicago 1996 3 3 6 [45]
  5 I HAR21 Finland 2002 1 ND ND [44, 46]
  5 I-VAR PL72 Poland 1991 1 ND ND [30, 47]
  5 II N315 Japan 1982 8 4 9 [18]
  5 II JP1 Japan 1987 8 4 9 [30, 48]
  5 II BK2464 USA 1996 4 6 2 [30, 49]
  5 II USA100 USA 1995-2003 3 3 6 [40, 46]
  5 IVa BM18 USA 1989 4 6 2 [30, 39, 50]
  5 IVa FFP311 Portugal 1996 11 1 7 [39, 51]
5 5 IVa HSA49 Portugal 1993 11 ND ND [39, 51]
  5 IVa HSA74 Portugal 1993 5 3 3 [39, 51]
  5 IVc Q2314 Dallas 1996 3 ND ND [52]
  5 IVc USA800 USA 1995-2003 1 ND ND [39, 40]
  5 IVc ARG9 Argentina 1996 11 7 7 [39, 51]
  5 IVd JCSC4469 Japan 1982 1 1 1 [53]
  5 IVg M03-68 Korea 2003 3 ND ND [54]
  5 IVNT COB3 Colombia 1996 6 5 10 [30, 39, 55]
  5 VI HDE288 Portugal 1996 10 - 5 [51, 56]
  5 VI HUC136 Portugal 1995 10 - 5 [51, 56]
  228 I HAR40 Belgium 1995 2 3 1 [44, 46]
  30 IVc DEN2946 Denmark 2001 1 1 1 [39, 57]
30 30 IVc DEN2294 Denmark 2001 1 ND ND [39, 57]
  36 II USA200 USA 1995-2003 1 1 1 [40, 46]
  36 II HAR24 Finland 2002 1 ND ND [46, 47]
  22 IVh HAR22 Finland 2002 9 - 4 [39, 44]
22 22 IVh HGSA146 Portugal 2003 9 ND ND [39, 58]
  22 IVh HGSA163 Portugal 2003 9 ND ND [39, 58]
  45 II USA600 USA 1995-2003 7 4 9 [40, 46]
45 45 IVa HAR38 Belgium 1995 6 2 8 [39, 44]
  45 V WIS Australia 1995 8 ND ND [59]
  256 IVa CA05 Chicago 1999 8 4 9 [45]
1 1 IVa MW2 USA 1998 6 2 10 [60]
  1 IVa USA400 USA 1995-2003 6 2 10 [39, 40]
80 80 IVc DEN2949 Denmark 2001 5 3 3 [39, 57]
  80 IVc DEN114 Denmark 2001 5 1 3 [39, 57]
Singleton 377 V HT0184 Greece 2005 6 2 10 [61]
  377 V HT0826 France 2003 6 ND ND [61]
  1. a) Clonal complexes were determined using the E-burst software http://saureus.mlst.net/, last accessed on June 04, 2009.
  2. ND, not determined, -, negative PCR amplification.