منابع مشابه
Ancestral hemoglobins in Archaea.
Hemoglobins are ubiquitous in Eukarya and Bacteria but, until now, have not been found in Archaea. A phylogenetic analysis of the recently revealed microbial family of globin-coupled heme-based sensors suggests that these sensors descended from an ancient globin-only progenitor, or a protoglobin (Pgb). Here, we report the discovery and characterization of two Pgbs from the Archaea: ApPgb from t...
متن کاملStreamlining and Large Ancestral Genomes in Archaea Inferred with a Phylogenetic Birth-and-Death Model
Homologous genes originate from a common ancestor through vertical inheritance, duplication, or horizontal gene transfer. Entire homolog families spawned by a single ancestral gene can be identified across multiple genomes based on protein sequence similarity. The sequences, however, do not always reveal conclusively the history of large families. To study the evolution of complete gene reperto...
متن کاملAbnormal Hemoglobins in Turkey.
The presence of HbS was reported in Turkey for the first time in the late fifties by Aksoy et al. This was followed by other reports by the same author revealing the presence of several other abnormal hemoglobins in Turkey. So far up to present 42 abnormal hemoglobins have been identified in the Turkish population. In addition to the studies conducted in Turkey, many European researchers report...
متن کاملMinor Hemoglobins in Erythrocytes
FREE-BOTJNDARY ELECTROPHORESI8 has been used for the isolation, from fresh extracts of normal human red blood cells, of a hemoglobin, which at pH 8.8 was more negatively charged than the chief component (1) and which, on spectroscopic examination, has been found indistinguishable from the bulk of the oxyhemoglobin as regards the visible region and the Soret band (2). The proportion of this hemo...
متن کاملPlant hemoglobins
Hbs are ubiquitous proteins in most organisms, including bacteria, protozoans, fungi, plants, and animals (Vinogradov et al., 1993; Bolognesi et al., 1997). The known and predicted roles of Hbs in each organism encompass functions that include the reversible binding of gaseous ligands and the ability to bind other cellular molecules. Link to full text: http://www.plantphysiol.org/cgi/content/fu...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2004
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.0308657101