Conserved sequence blocks 5' to start codons of plant mitochondrial genes

Three sequence blocks of 10-12 bp are conserved in sequence and order 5' to putative start codons of several higher-plant mitochondrial genes. At least 25 examples were found, primarily associated with coxII, atp6, and orf25, in monocotyledons and dicotyledons. The proximal block can be 9 bp fr...

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Bibliographic Details
Published in:Plant molecular biology 1992-05, Vol.19 (2), p.313-317
Main Authors: Pring, D.R, Mullen, J.A, Kempken, F
Format: Article
Language:English
Subjects:
Base Sequence
Biological and medical sciences
Biological Evolution
Chromosome Deletion
Codon - genetics
DNA conformation
DNA, Mitochondrial - genetics
Electron Transport Complex IV - genetics
Fundamental and applied biological sciences. Psychology
genes
Genes, Plant
genetic code
genetic regulation
initiation codons
Liliopsida
Magnoliopsida
mitochondrial DNA
Molecular and cellular biology
Molecular genetics
Molecular Sequence Data
nucleotide sequences
Plants - genetics
recombination breakpoints
Sequence Homology, Nucleic Acid
translation
Translation. Translation factors. Protein processing
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Summary:Three sequence blocks of 10-12 bp are conserved in sequence and order 5' to putative start codons of several higher-plant mitochondrial genes. At least 25 examples were found, primarily associated with coxII, atp6, and orf25, in monocotyledons and dicotyledons. The proximal block can be 9 bp from start codons, and the three blocks generally occur within 100 bp 5' of start codons. In three examples 5' termini of the blocks represent recombination breakpoints, resulting in conservation of the blocks in resultant configurations. The two proximal blocks can form a secondary structure motif. The occurrence of the blocks near start codons, and conserved sequence and order, is consistent with a possible role in translation initiation or regulation.
ISSN:0167-4412
1573-5028
DOI:10.1007/BF00027353