The nifH gene product is required for the synthesis or stability of the iron-molybdenum cofactor of nitrogenase from Klebsiella pneumoniae
| Autor: | Richard M. Kemp, Wendy A. Filler, Ray Dixon, Jasmine C. Ng, Timothy R. Hawkes, Barry E. Smith |
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| Rok vydání: | 1986 |
| Předmět: |
Molybdoferredoxin
FeMoco Transcription Genetic Klebsiella pneumoniae Biochemistry Cofactor Gene product chemistry.chemical_compound Bacterial Proteins Transcription (biology) Nitrogenase Cloning Molecular Gene biology Nif gene biology.organism_classification chemistry Gene Expression Regulation Genes Genes Bacterial biology.protein Ferredoxins Plasmids |
| Zdroj: | European journal of biochemistry. 160(2) |
| ISSN: | 0014-2956 |
| Popis: | The MoFe protein of nitrogenase from Klebsiella pneumoniae contains an iron-molybdenum cofactor, FeMoco, the synthesis or processing of which involves the products of at least five genes, nifQ, nifB, nifN, nifE and nifV. We have detected FeMoco activity in extracts of strains which synthesise neither of the MoFe protein subunits, indicating that FeMoco can be synthesised prior to combination with the MoFe protein polypeptides. Expression of the nifH gene (or a large part of it), was essential for FeMoco activity to be observed either in the presence or in the absence of the MoFe protein subunits. The nifH gene product was not involved in the control of the transcription of other nif gene products known to be involved in FeMoco synthesis or processing, nor was it essential for the stability of performed FeMoco before its combination with the MoFe protein polypeptides. |
| Databáze: | OpenAIRE |
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