Expression and in silico structural analysis of a rice (Oryza sativa) hemoglobin 5

V. Garrocho-Villegas, G. Bustos-Rivera, J. Gough, S.N. Vinogradov, R. Arredondo-Peter

Research output: Contribution to journalArticle (Academic Journal)peer-review

9 Citations (Scopus)

Abstract

This work reports the analysis of an additional hemoglobin (hb) gene copy, hb5, in the genome of rice. The amino acid sequence of Hb5 differs from the previously determined rice Hbs 1–4 in missing 11 residues in helix E. Transcripts of hb5 were found to be ubiquitous in rice organs, and hormone- and stress-response promoters exist upstream of the rice hb5 gene. Furthermore, the modeled structure of Hb5 based on the known crystal structure of rice Hb1 is unusual in that the putative distal His is distant from the heme Fe. This observation suggests that Hb5 binds and releases O2 easily and thus that it functions as an O2-carrier or in some aspects of the O2 metabolism.
Translated title of the contributionExpression and in silico structural analysis of a rice (Oryza sativa) hemoglobin 5
Original languageEnglish
Article number1-5
JournalPlant Physiology and Biochemistry
Volumexx
Publication statusPublished - 2008

Bibliographical note

Other identifier: 2000935

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