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Ribonuclease P (Paperback, 2010 ed.)
Loot Price: R4,229
Discovery Miles 42 290
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Ribonuclease P (Paperback, 2010 ed.)
Series: Protein Reviews, 10
Expected to ship within 10 - 15 working days
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The Discovery of Ribonuclease P and Enzymatic Activity of Its RNA
Subunit Sydney Brenner and Francis H. C. Crick had a specific
project in mind when they offered Sidney Altman a position in their
group in 1969 to conduct postdoctoral research at the Medical
Research Council Laboratory of Molecular Biology (LMB) in
Cambridge, England. At the time, an intense international
competition was on- ing in as many as a dozen labs to determine the
three-dimensional structure of tRNA. At the LMB, Aaron Klug was
attacking the structure by crystallographic analysis with Brian F.
C. Clark providing large amounts of purified phenylalanine tRNA.
(Eventually, Aaron announced his empirically determined 3-D
structure of yeast phenylalanine tRNA, a structure that is
generally common to tRNAs, due in part to several conserved, novel
three-way nucleotide interactions. ) Concurrently, Michael Levitt,
a Ph. D. student of Francis, was visually scrutinizing the
cloverleaf secondary structure of the 14 tRNA sequences known at
the time. Levitt was searching for nucleotide covariation in
different parts of the molecules that were conserved in the 14
sequences known at the time. He identified a possible covariation
of an apparent Watson-Crick pairing type between the residues at
position 15 from the 5' end of the tRNA and residue 48. This
association implied these parts of the tRNA, namely the D loop
containing residue 15 and the 5' end of the T stem-adjoining
residue 48, folded on one another in a tertiary structure shared by
different tRNAs.
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