Maize mitochondria synthesize organ-specific polypeptides

Journal Article · Tue Oct 01 00:00:00 EDT 1985 · Proc. Natl. Acad. Sci. U.S.A.; (United States)

DOI:https://doi.org/10.1073/pnas.82.20.6879· OSTI ID:6086156

Newton, K J; Walbot, V

The authors detected both quantitative and qualitative organ-specific differences in the total protein composition of mitochondria of maize. Labeling of isolated mitochondria from each organ demonstrated that a few protein differences are due to changes in the polypeptides synthesized by the organelle. The synthesis of developmental stage-specific mitochondrial polypeptides was found in the scutella of developing and germinating kernels. The approximately 13-kDa polypeptide synthesized by mitochondria from seedlings of the Texas (T) male-sterile cytoplasm was shown to be constitutively expressed in all organs of line B37T tested. Methomyl, an insecticide known to inhibit the growth of T sterile plants, was shown to be an effective inhibitor of protein synthesis in mitochondria from T plants.

• Research Organization: Stanford Univ., CA (United States)
• OSTI ID: 6086156
• Journal Information: Proc. Natl. Acad. Sci. U.S.A.; (United States), Vol. 20
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
PEPTIDES
BIOSYNTHESIS
SULFUR 35
TRACER TECHNIQUES
MAIZE
METHIONINE
MITOCHONDRIA
MOLECULAR WEIGHT
AMINO ACIDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBOXYLIC ACIDS
CELL CONSTITUENTS
CEREALS
DAYS LIVING RADIOISOTOPES
DRUGS
EVEN-ODD NUCLEI
GRASS
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
LIPOTROPIC FACTORS
NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
ORGANOIDS
PLANTS
PROTEINS
RADIOISOTOPES
SULFUR ISOTOPES
SYNTHESIS
550201* - Biochemistry- Tracer Techniques