Table 1: Sequences of guanylin and uroguanylin in different species.

Guanylin
 EelY D E C E I C M F A A C T G C
 OpossumS H T C E I C A F A A C A G C
 HumanP G T C E I C A Y A A C T G C
 Rat/mouseP N T C E I C A Y A A C T G C
 PigP S T C E I C A Y A A C A G C
 Guinea pigP S T C E I C A Y A A C A G C

Uroguanylin
 EelP D P C E I C A N A A C T G C L
 OpossumQ E D C E L C I N V A C T G C
 HumanN D D C E L C V N V A C T G C L
 Rat/mouseT D E C E L C I N V A C T G C
 PigG D D C E L C V N V A C T G C S
 Guinea pigN D E C E L C V N I A C T G C

Identical amino acids in these proteins of different species are indicated in bold.