Table 5.

rpoB gene amino acid substitutions associated with rifabutin-resistant H. pylori strains.

No.	Strain Name	MIC µg/uL	rpoB Mutation
			E470	D530	V538	R701	L2196	A2710
1	Ke9	8	G				P	V
2	UB217	4		N		C
3	UB75	0.12			I
4	Kh67	0.06			I
Sensitive stains (n = 217) < 0.12			E	D	V	R	L	A

E, glutamic acid; N, asparagine; D, aspartic acid; V, valine; R, arginine; L, leucine; A, alanine; G, glycine; I, isoleucine; C, cysteine. Green indicates resistance. Blue indicates the corresponding, previously reported mutation; light green indicates new hypothetical mutations. UB, Ulaanbaatar capital city; Ke, Khentii; Kh, Khuvsgul.