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    • Alteration of the structure of theEscherichia coli ribosomes on treatment with Fab fragment of immunoglobulin raised against the ribosomes

      M Das D P Burma

      Volume 1 Issue 1 March 1979 pp 83-89

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jbsc/001/01/0083-0089

    • Keywords

       

      Ribosomes; ribosomal subunits; antibody; immunoglobulin; Fab; ribonuclease I

    • Abstract

       

      Rabbits were immunised againstEscherichia coli ribosomes and the partially purified immunoglobulin G fraction had maximum ability to precipitate the ribosomes as well as the extracted ribosomal proteins. By digestion of immuno-globulin G with papain, monovalent Fab fragments were produced. The 70 S ribosome and its subunits (50 S and 30 S) were separately treated with Fab and then tested in the kinetic assay of degradation of ribosomes by ribonuclease I at various Mg2+ concentrations. Treated ribosomes and their subunits were degraded at faster rates than the nontreated ones; the rates in both the control and the treated cases were dependent on the concentration of Mg2+. These results indicate the unfolding of the structure of the ribosome on treatment with antibody fragments, which may be due to the weakening of the interaction between rRNAs and ribosomal proteins.

    • Author Affiliations

       

      M Das1 D P Burma1

      1. Molecular Biology Unit, Department of Biochemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi - 221 005

    • Dates

       
      Published
      March 1979
      Manuscript received
      19 June 1978
      Manuscript revised
      6 December 1978

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