Table 2.

Approximate distribution of the five known GSTZ1 haplotypes in US and Australian populations (reviewed in James and Stacpoole, 2016). The percentage of each haplotype varied with ethnic group.

Haplotype	Nucleotide position			Amino acid position			% in the population
	94	124	245	32	42	82
GSTZ1A	A	A	C	K	R	T	1-10
GSTZ1B	A	G	C	K	G	T	25-35
GSTZ1C	G	G	C	E	G	T	45-55
GSTZ1D	G	G	T	E	G	M	10-20
GSTZ1F	A	G	T	K	G	M	<1

Standard amino acid abbreviations are used, viz., K = lysine, G = glycine, T = threonine, E = glutamic acid, M = methionine