Expression and functional analysis of an N-truncated NifA protein ofHerbaspirillum seropedicae
نویسندگان
چکیده
منابع مشابه
Expression and characterization of an N-truncated form of the NifA protein of Azospirillum brasilense
Azospirillum brasilense is a nitrogen-fixing bacterium associated with important agricultural crops such as rice, wheat and maize. The expression of genes responsible for nitrogen fixation (nif genes) in this bacterium is dependent on the transcriptional activator NifA. This protein contains three structural domains: the N-terminal domain is responsible for the negative control by fixed nitroge...
متن کاملEffect of point mutations on Herbaspirillum seropedicae NifA activity
NifA is the transcriptional activator of the nif genes in Proteobacteria. It is usually regulated by nitrogen and oxygen, allowing biological nitrogen fixation to occur under appropriate conditions. NifA proteins have a typical three-domain structure, including a regulatory N-terminal GAF domain, which is involved in control by fixed nitrogen and not strictly required for activity, a catalytic ...
متن کاملCloning, Expression and Purification of Truncated Chlamydia Trachomatis Outer Membrane Protein 2 (Omp2) and its Application in an ELISA Assay
Background: Although a simple and direct method does not exist for the detection of chlamydial infections, there are situations in which reliable serological tests, with sensi-tivity related to a specific antigen, could be helpful. Objective: The aim of this study was to clone the first 1100 bp of the C. trachomatis outer membrane protein 2 (omp2) gene in order to prepare a recombinant protein ...
متن کاملExpression, Purification, and Antiserum Production of the Truncated UL31 Protein of Herpes Simplex Virus 1
Background: The UL31 protein of herpes simplex virus 1 (HSV-1) plays an important role in the HSV-1 replication, however, its pinpoint functions in the life cycle of the virus have yet to be adequately elucidated. Objectives: An antiserum specific for detecting HSV-1 UL31 was prepared as the foundation for future research on the role of UL31 in the course...
متن کاملControl of Herbaspirillum seropedicae NifA activity by ammonium ions and oxygen.
The activity of a truncated form of Herbaspirillum seropedicae NifA in different genetic backgrounds showed that its regulatory domain is involved in nitrogen control but not in O2 sensitivity or Fe dependence. The model for nitrogen control involving PII could thus apply to the proteobacteria at large. NifA may have a role in controlling ADP-ribosylation of nitrogenase in Azospirillum brasilense.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: FEBS Letters
سال: 1999
ISSN: 0014-5793
DOI: 10.1016/s0014-5793(99)00314-2