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[Separation of leghemoglobin from the nodules of lupine, Lupinus luteus L., into components]. 1976

I P Kuranova, and A I Grebenko, and N V Konareva, and I F Syrmiatnikova, and V V Barynin

The crude leghaemoglobin suspension from root nodules of yellow lupine (Lupinus luteus L.) was separated into five fractions: I, IIa and IIb, IIIa and IIIb using the chromatography on DEAE-cellulose (numbered following the elution order). The visible absorption spectra show that fractions I, IIa and IIIa are met-leghaemoglobins while IIb and IIIb are oxy-forms. IIb and IIIb were converted to IIa and IIIa respectively when oxidized with potassium ferricyanide. The determination of two first N-terminal amino acids confirms the identity of pairs IIa-IIb and IIIa-IIIb. Three components of leghaemoglobin were obtained having the following N-terminal amino acids: Gly-Val- (the first), Gly-Ala- (the second), Ala-Val- (the third). The molecular weights obtained by Archibald's method are 17 900, 17 600, 18 800 respectively. The second leghaemoglobin species which contains more than 50% of the starting protein mixture was used to grow crystals for X-ray study of the tertiary structure of this protein.

UI MeSH Term Description Entries
D007874 Leghemoglobin A hemoglobin-like oxygen-binding hemeprotein present in the nitrogen-fixing root nodules of leguminous plants. The red pigment has a molecular weight approximately 1/4 that of hemoglobin and has been suggested to act as an oxido-reduction catalyst in symbiotic nitrogen fixation. Leghemoglobin A
D008970 Molecular Weight The sum of the weight of all the atoms in a molecule. Molecular Weights,Weight, Molecular,Weights, Molecular
D002621 Chemistry A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.
D006420 Hemeproteins Proteins that contain an iron-porphyrin, or heme, prosthetic group resembling that of hemoglobin. (From Lehninger, Principles of Biochemistry, 1982, p480) Hemeprotein,Heme Protein,Heme Proteins,Protein, Heme,Proteins, Heme
D000596 Amino Acids Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins. Amino Acid,Acid, Amino,Acids, Amino
D055598 Chemical Phenomena The composition, structure, conformation, and properties of atoms and molecules, and their reaction and interaction processes. Chemical Concepts,Chemical Processes,Physical Chemistry Concepts,Physical Chemistry Processes,Physicochemical Concepts,Physicochemical Phenomena,Physicochemical Processes,Chemical Phenomenon,Chemical Process,Physical Chemistry Phenomena,Physical Chemistry Process,Physicochemical Phenomenon,Physicochemical Process,Chemical Concept,Chemistry Process, Physical,Chemistry Processes, Physical,Concept, Chemical,Concept, Physical Chemistry,Concept, Physicochemical,Concepts, Chemical,Concepts, Physical Chemistry,Concepts, Physicochemical,Phenomena, Chemical,Phenomena, Physical Chemistry,Phenomena, Physicochemical,Phenomenon, Chemical,Phenomenon, Physicochemical,Physical Chemistry Concept,Physicochemical Concept,Process, Chemical,Process, Physical Chemistry,Process, Physicochemical,Processes, Chemical,Processes, Physical Chemistry,Processes, Physicochemical

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