Synthesis of amino acyl-adenylates under prebiotic conditions Mella Paecht-HorowitzA. Katchalsky OriginalPaper Pages: 91 - 98
Eukaryote evolution: A view based on cytochromec sequence data P. J. McLaughlinM. O. Dayhoff OriginalPaper Pages: 99 - 116
Evolution of glycoproteins as judged by the frequency of occurrence of the tripeptides Asn-X-Ser and Asn-X-Thr in proteins Hyogo SinoharaTakeo Maruyama OriginalPaper Pages: 117 - 122
Is the fixation of observable mutations distributed randomly among the three nucleotide positions of the codon? Walter M. Fitch OriginalPaper Pages: 123 - 136
Possible resolution of racemic mixtures by bistability in “bioids”, open systems which can exist in several steady states Peter Decker OriginalPaper Pages: 137 - 143
The stochastic model and deviations from randomness in eukaryotictRNAs: Comparison with the PAM approach Richard Holmquist OriginalPaper Pages: 145 - 148
Photocatalytic synthesis of organic compounds from CO and water: Involvement of surfaces in the formation and stabilization of products Jerry S. HubbardJames P. HardyEllis E. Golub OriginalPaper Pages: 149 - 166
The relationship between precursor and mature forms of the 23 S ribosomal RNA M. L. SoginC. R. WoeseN. R. Pace OriginalPaper Pages: 167 - 174
Sea anemone collagen: Further evidence for the existence of only oneα-chain type A. NordwigH. NowackE. Hieber-Rogall OriginalPaper Pages: 175 - 180
Are human hemoglobin variants distributed randomly among the positions? Walter M. Fitch OriginalPaper Pages: 181 - 186
Evolution in the pancreatic chymotrypsinogen series: N-terminal sequence determinations and comparisons Arvind K. BhargavaEric A. Barnard OriginalPaper Pages: 187 - 198
Translational control of protein synthesis by tRNA unrelated to changes in tRNA concentration Gary B. Weiss OriginalPaper Pages: 199 - 204
Evolution of nucleic acid replication: The possible role of simple repeating sequence polypeptides therein C. R. Woese OriginalPaper Pages: 205 - 208
Comparison of RNA sequences from widely divergent species Roger MorazainR. J. Cedergren Letter to the Editor Pages: 209 - 214
Recently published protein sequences. II Richard HolmquistThomas H. Jukes Letter to the Editor Pages: 215 - 229
Further studies of urea-catalyzed phosphorylation reactions R. ÖsterbergL. E. OrgelR. Lohrmann Letter to the Editor Pages: 231 - 234