Chloroplast polypeptide chains probably often travel through the two complexes at the same time, but the TIC complex can also retrieve preproteins lost in the intermembrane space.
As cadeas de polipéptidos cloroplásticos probablemente adoitan viaxar a través dos dous complexos á vez, pero os complexos TIC poden tamén recuperar preproteínas perdidas no espazo intermembrana do cloroplasto.