These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Isolation and characterization of Rhizobium etli mutants altered in degradation of asparagine.
    Author: Huerta-Zepeda A, Ortuño L, Du Pont G, Durán S, Lloret A, Merchant-Larios H, Calderón J.
    Journal: J Bacteriol; 1997 Mar; 179(6):2068-72. PubMed ID: 9068657.
    Abstract:
    Rhizobium etli mutants unable to grow on asparagine as the nitrogen and carbon source were isolated. Two kinds of mutants were obtained: AHZ1, with very low levels of aspartase activity, and AHZ7, with low levels of asparaginase and very low levels of aspartase compared to the wild-type strain. R. etli had two asparaginases differentiated by their thermostabilities, electrophoretic mobilities, and modes of regulation. The AHZ mutants nodulated as did the wild-type strain and had nitrogenase levels similar to that of the wild-type strain.
    [Abstract] [Full Text] [Related] [New Search]