The complete ammo acid sequence of 147 residues has been determined for the major monomeric component of the hemoglobin of the bloodworm, Glycera dibranchiata. The residues at 34 sites (23 %) appear to be identical with those in sperm whale myoglobin. Of the 7 “invariant” residues found in vertebrate hemoglobins only three are present in this molecule: the glycine and phenylalanine residues at ...

Hemoglobins (Hbs) corresponding to non-symbiotic (nsHb) and truncated (tHb) Hbs have been identified in rice ( ). This review discusses the major Oryza findings from the current studies on rice Hbs. At the molecular level, a family of the genes, consisting of , , , and , and a single copy of nshb hb1 hb2 hb3 hb4 hb5 the gene exist in var. indica and . var. japonica, Hb thb Oryza sativa O sativa...

Hemoglobin is a porphyrin containing protein with an a2b2 tetrameric structure and like other porphyrin compounds shows spectral behavior of species specific characteristics. Researchers tend to relate bands in the hemoglobin spectra to certain structural and/or functional features. Given the fact that hemoglobin is the main oxygen carrier in animals functioning through the Oxy«Deoxy equilibriu...

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...

Hemoglobins (Hbs) corresponding to non-symbiotic (nsHb) and truncated (tHb) Hbs have been identified in rice ( Oryza). This review discusses the major findings from the current studies on rice Hbs. At the molecular level, a family of the nshb genes, consisting of hb1, hb2, hb3, hb4 and hb5, and a single copy of the thb gene exist in Oryza sativa var. indica and O. sativa var. japonica, Hb trans...