Question

Chloroplast localization signals consist of two adjacent signal peptides, one for targeting the proteins to the stromaportion of the chloroplast before being cleaved and the other for targeting the remaining portion of the proteins to the thylakoids.

(a) True

(b) False

The question was asked in homework.

This key question is from Protein Sorting in portion Functional Genomics & Proteomics of Bioinformatics

Answer 1

The correct option is (a) True

To elaborate: Localization signals targeting to the nucleus are variable in length (seven to forty-one residues) and are found in the internal region of the proteins. They typically consist of one or two stretches of basic residues with a consensus motif K(K/R)X(K/R). Nuclear signal sequences are not cleaved after protein transport.