Binds to 23S rRNA. Forms part of two intersubunit bridges in the 70S ribosome. Part of the 50S ribosomal subunit. Forms a cluster with proteins L3 and L19. In the 70S ribosome, L14 and L19 interact and together make contacts with the 16S rRNA in bridges B5 and B8. Belongs to the universal ribosomal protein uL14 family.