Document Detail

Identification of a 42-kDa plant mitochondrial outer membrane protein, MOM42, involved in the import of precursor proteins into plant mitochondria.
MedLine Citation:
PMID:  7864620     Owner:  NLM     Status:  MEDLINE    
A 42-kDa plant outer mitochondrial membrane protein, MOM42, has been identified as an essential component of the plant mitochondrial precursor protein translocation apparatus. Immunological cross-reactivity has been detected between antibodies raised against both Neurospora and yeast mitochondrial outer membrane proteins and plant mitochondrial outer membrane proteins. Immunocompetition studies showed that import of precursors to Rieske FeS protein, ATPase su9-DHFR, and the adenine nucleotide transporter was inhibited in the presence of antibody to MOM42. The inhibition of Rieske Fes and su9-DHFR import was greater than that of the adenine nucleotide transporter. The competition studies suggest that the MOM42 is involved in the translocation of bound precursor proteins. The import data and the Western blots suggest that components of the mitochondrial import system are highly conserved.
R A Perryman; B Mooney; M A Harmey
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Archives of biochemistry and biophysics     Volume:  316     ISSN:  0003-9861     ISO Abbreviation:  Arch. Biochem. Biophys.     Publication Date:  1995 Feb 
Date Detail:
Created Date:  1995-03-17     Completed Date:  1995-03-17     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0372430     Medline TA:  Arch Biochem Biophys     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  659-64     Citation Subset:  IM    
Department of Botany, University College Dublin, Belfield, Ireland.
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MeSH Terms
Adenosine Triphosphatases / metabolism
Biological Transport
Blotting, Western
Carrier Proteins / immunology,  metabolism*
Cross Reactions
Electron Transport Complex III*
Fabaceae / metabolism
Intracellular Membranes / chemistry
Iron-Sulfur Proteins / metabolism
Membrane Proteins / immunology,  metabolism*
Membrane Transport Proteins*
Mitochondria / metabolism*
Mitochondrial ADP, ATP Translocases / metabolism
Plant Proteins*
Plants, Medicinal
Protein Precursors / metabolism*
Species Specificity
Vegetables / metabolism*
Reg. No./Substance:
0/Carrier Proteins; 0/Iron-Sulfur Proteins; 0/Membrane Proteins; 0/Membrane Transport Proteins; 0/Plant Proteins; 0/Protein Precursors; 0/Rieske iron-sulfur protein; 9068-80-8/Mitochondrial ADP, ATP Translocases; EC Transport Complex III; EC 3.6.1.-/Adenosine Triphosphatases

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