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Nucleic Acids Res 1981 Mar 11;95:1069-86.
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Xenopus laevis ribosomal protein genes: isolation of recombinant cDNA clones and study of the genomic organization.

Bozzoni I , Beccari E , Luo ZX , Amaldi F .

Poly-A+ mRNA from Xenopus laevis oocytes, partially enriched for r-protein coding capacity has been used as starting material for preparing a cDNA bank in plasmid pBR322. The clones containing sequences specific for r-proteins have been selected by translation of the complementary mRNAs. Clones for six different r-proteins have been identified and utilized as probes for studying their genomic organization. Two gene copies per haploid genome were found for r-proteins L1, L14, S19, and four-five for protein S1, S8 and L32. Moreover a population polymorphism has been observed for the genomic regions containing sequences for r-protein S1, S8 and L14.

PubMed ID: 6112733
PMC ID: PMC326737
Article link: Nucleic Acids Res

References [+] :
Cleveland, Peptide mapping by limited proteolysis in sodium dodecyl sulfate and analysis by gel electrophoresis. 1977, Pubmed