Located on the platform of the 30S subunit, it bridges several disparate RNA helices of the 16S rRNA. Forms part of the Shine-Dalgarno cleft in the 70S ribosome (By similarity). Part of the 30S ribosomal subunit. Interacts with proteins S7 and S18. Cross-links to IF-3 (By similarity). Belongs to the universal ribosomal protein uS11 family.