Lagerkvist versus Crick

The orbital history of two periodic comets encountering Saturn

Two recently discovered short-period comets (P/1997 T3 (Lagerkvist-Carsenty) and P/1998 U3 (Jäger)) were found, by means of numerical integrations, to have recently encountered Saturn, leading to drastic orbital changes. In both cases the orbit was transformed from a Saturn-dominated regime (roughly tangential to Saturn’s orbit) into a deep Jupiter-crossing orbit. For P/1997 T3 a close encounte...

Aberrations of the classic codon reading scheme during protein synthesis in vitro.

Using a protein synthesizing in vitro system programmed with MS2-RNA, the ability of alanine tRNAs with the anticodons U*GC (U* represents 5-oxyacetic acid uridine monophosphate) and IGC to read the alanine codons in the coat protein cistron of MS2 has been determined both under conditions of no competition, where the alanyl-tRNA used was the only aminoacylated tRNAAla present in the system, an...

Some Properties of Purified Valyl and Lysyl Ribonucleic Acid Synthetases from Yeast.

Equivalence of Subclasses of Two-Way Non-Deterministic Watson Crick Automata

Watson Crick automata are finite automata working on double strands. Extensive research work has already been done on non deterministic Watson Crick automata and on deterministic Watson Crick automata. Parallel Communicating Watson Crick automata systems have been introduced by E. Czeziler et al. In this paper we discuss about a variant of Watson Crick automata known as the two-way Watson Crick...

Discrimination among individual Watson-Crick base pairs at the termini of single DNA hairpin molecules.

Nanoscale alpha-hemolysin pores can be used to analyze individual DNA or RNA molecules. Serial examination of hundreds to thousands of molecules per minute is possible using ionic current impedance as the measured property. In a recent report, we showed that a nanopore device coupled with machine learning algorithms could automatically discriminate among the four combinations of Watson-Crick ba...