Archaea: narrowing the gap between prokaryotes and eukaryotes.
نویسندگان
چکیده
منابع مشابه
Lokiarchaea are close relatives of Euryarchaeota, not bridging the gap between prokaryotes and eukaryotes
The eocyte hypothesis, in which Eukarya emerged from within Archaea, has been boosted by the description of a new candidate archaeal phylum, "Lokiarchaeota", from metagenomic data. Eukarya branch within Lokiarchaeota in a tree reconstructed from the concatenation of 36 universal proteins. However, individual phylogenies revealed that lokiarchaeal proteins sequences have different evolutionary h...
متن کاملPredation between prokaryotes and the origin of eukaryotes.
Accumulating data suggest that the eukaryotic cell originated from a merger of two prokaryotes, an archaeal host and a bacterial endosymbiont. However, since prokaryotes are unable to perform phagocytosis, the means by which the endosymbiont entered its host is an enigma. We suggest that a predatory or parasitic interaction between prokaryotes provides a reasonable explanation for this conundru...
متن کاملAnother Bridge between Kingdoms: tRNA Splicing in Archaea and Eukaryotes
in a multistep process requiring ATP and GTP, leaving a 2Ј-phosphate at the splice junction. In a remarkable * Molecular Genetics Program Wadsworth Center final step, the phosphotransferase removes the 2Ј phosphate by transfer to NAD, generating a mature tRNA New York State Department of Health and School of Public Health with a standard 3Ј–5Ј linkage at the ligation junction Archaeal tRNA intr...
متن کاملNarrowing the gap between the natural and the social sciences
The natural and social sciences are generally considered to be completely different fields of knowledge. This paper will challenge this view in an original manner by turning the usual approach to this challenge upside down. It will argue that the natural sciences are more like the social sciences than we think, instead of trying to enforce a rationalist deductive epistemology onto the human sci...
متن کاملNarrowing the Gap between the Anion Gap and the Strong Ion Gap
Background: Despite its importance in understanding acid-base pathophysiology, many physicians do not comprehend the concept of the strong anion gap (SIG), the core of the Stewart acid-base approach. The quantitative difference between the anion gap and the strong ion gap is not established. This paper will give insight into this difference over a variety of conditions Methods. The empiric diff...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1995
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.92.13.5761