Purification, properties, and N-terminal amino acid sequence of certain 50S ribosomal subunit proteins from the archaebacterium Halobacterium cutirubrum

Abstract
Sixteen ribosomal proteins (r-proteins) from the 50S ribosomal subunit of the arachaebacterium H. cutirubrum were purified and their amino acid composition and partial N-terminal amino acid sequence were determined. These proteins as a group are much more acidic than the large subunit r-proteins from eubacteria or eukaryotes. Little sequence homology is evident between the 50S subunit arachaebacterial r-proteins and the equivalent proteins from the eubacterium Escherichia coli.

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