Table 1.

Expression of H₂S-synthesizing enzymes in pancreases and islet β cells.

H2S-synthesizing enzyme	Expression	Cells/Model	Refs.
CBS	mRNA and protein were detected (low levels)	HIT-T15 cells	[17]
	mRNA was detected (low levels)	Rat pancreatic islets	[18]
	mRNA was detected	MIN6 cells	[19]
	mRNA and protein were detected	Mouse pancreatic islets	[19]
	mRNA and protein were detected (mRNA was moderately expressed)	Mouse pancreatic islets	[20]
	protein was detected	Moue pancreases	[20], [21]
CSE	No mRNA expression was detected	HIT-T15 cells	[17]
	mRNA and protein were detected (H2S dominant synthase)	INS-1E cells	[22]
	mRNA and protein were detected (H2S dominant synthase)	Rat pancreatic islets	[18]
	mRNA was detected	MIN6 cells	[19]
	mRNA was detected	Mouse pancreatic islets	[19]
	mRNA and protein were detected (low levels)	Mouse pancreatic islets	[20]
	protein was detected	Mouse pancreases	[20], [21]
3-MST	No protein expression was detected	Mouse pancreases	[21]