Neighbourhoods of proteins S2--S3, S3--S3a, S15--S15a, and S5--S25 within the small subunit of rat liver ribosomes.

Cross-linking of proteins within the small subunit of rat liver ribosomes by the bifunctional reagent dimethyl 3.8-diaza-4.7-dioxo-5.6-dihydroxydecanbisimidate results in the formation of various complex which were separated by two-dimensional polyacrylamide gel electrophoresis. Components of four complexes were electrophoretically identified after periodate cleavage as S2--S3, S3--S3a, S15--S15a, and S5--S25.