Table 4. Diversity and frequency of single-nucleotide polymorphisms displayed by Giardia duodenalis sub-assemblage BIII isolates at the glutamate dehydrogenase locus (partial sequence between positions 61 to 450) identified in the present study.

Novel genotypes were shown underlined. Point mutations inducing amino acid substitutions were highlighted as superscript numbers indicating the amino acid change. Transversion mutations were highlighted in bold.

		Nucleotide at position of reference sequence AF069059
		87	99	132	147	150	162	174	219	237	247	270	276	309	330	336	341	351	381	387	402
		C	C	C	T	G	T	C	T	T	A	C	T	C	C	C	G	C	G	C	G
Isolate	Number of isolates
KT310355	1	.	.	Y	Y	R	Y	Y	.	C	.	M 1	.	T	.	Y	.	.	.	.	R
KT310356	1	.	T	.	Y	R	.	.	.	Y	.	.	.	Y	Y	Y	.	.	.	.	R
KT310357	1	.	Y	.	Y	.	.	.	Y	Y	M	.	.	Y	Y	.	.	Y	.	Y	R
KT310358	1	Y	.	.	Y	R	.	.	.	.	.	.	.	T	.	Y	R	.	R 2	.	.
KT310359	1	.	Y	.	Y	R	.	.	.	.	.	.	C	T	.	T	.	.	.	.	.

M: A/C; R: A/G; Y: C/T.

¹p.D90E.

²p.R114K.