Hemoglobin in a nonleguminous plant, parasponia: possible genetic origin and function in nitrogen fixation.
Science
; 220(4600): 951-3, 1983 May 27.
Article
em En
| MEDLINE
| ID: mdl-17816020
ABSTRACT
A dimeric hemoglobin was purified from nitrogen-fixing root nodules formed by association of Rhizobium with a nonleguminous plant, Parasponia. The oxygen dissociation rate constant is probably sufficiently high to allow Parasponia hemoglobin to function in a fashion similar to that of leghemoglobin, by oxygen buffering and transport during symbiotic nitrogen fixation. The identification of hemoglobin in a nonlegume raises important questions about the evolution of plant hemoglobin genes.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Science
Ano de publicação:
1983
Tipo de documento:
Article