Assertion: phycobilin | /r/AtLocation | cysteines of the apoprotein
Facets:
value: via a thioether bond
type: MANNER
value: covalently
type: MANNER
value: in the last step
type: OTHER
Source sentences:
text: In the last step, these phycobilins are covalently attached to cysteines of the apoprotein via a thioether bond to C-31 on ring A (Fig. 1) and in some cases by an additional thioether bond to C-181 on ring D (6, 10–12).