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Table 3 Biotype characterization and ctxB genotype comparison of V. cholerae O1 isolates from Angola and India

From: New V. choleraeatypical El Tor variant emerged during the 2006 epidemic outbreak in Angola

Strain rstR tcpA ctxB
    Genotypea Amino acid positionb
VC582 ET ET 3 (ET) 20 (His); 24 (Gln); 28 (Asp); 34 (His); 39 (Tyr); 46 (Phe); 55 (Lys); 68 (Ile)
VC547 ET ET 3 (ET) 20 (His); 24 (Gln); 28 (Asp); 34 (His); 39 (Tyr); 46 (Phe); 55 (Lys); 68 (Ile)
VC1383 ET ET 3 (ET) 20 (His); 24 (Gln); 28 (Asp); 34 (His); 39 (Tyr); 46 (Phe); 55 (Lys); 68 (Ile)
VC175 ET ET 1 (Cla) 20 (His); 24 (Gln); 28 (Asp); 34 (His); 39 (His); 46 (Phe); 55 (Lys); 68 (Thr)
VC7452 ET ET 1 (Cla) 20 (His); 24 (Gln); 28 (Asp); 34 (His); 39 (His); 46 (Phe); 55 (Lys); 68 (Thr)
  1. Cla, Classical type; ET, El Tor type; aAccording to ctxB genotyping by Safa et al., 2010 [2]; bNucleotide position +1 corresponds to the A of the ATG start codon in ctxB.