The signal sequences are typically _______ residues long, rich in _____ charged residues such as arginines as well as hydroxyl residues such as serines and threonines, but devoid of ______ charged residues.
(a) 28 to 80, positively, negatively
(b) 300 to 800, negatively, positively
(c) 28 to 80, negatively, positively
(d) 300 to 500, positively, negatively
I have been asked this question in an interview.
My doubt stems from Protein Sorting in chapter Functional Genomics & Proteomics of Bioinformatics