Nucleotide Sequence of Aspergillus Nidulans Mitochondrial Genes Coding for ATPase Subunit 6, Cytochrome Oxidase Subunit 3, Seven Unidentified Proteins, Four TRNAs and L-rRNA

Overview

Journal Nucleic Acids Res

Publisher Oxford University Press

Specialty Biochemistry

Date 1982 Aug 11

PMID 6290989

Citations 58

Authors

R Netzker

H G Kochel

N Basak

H Kuntzel

Affiliations

Soon will be listed here.

Abstract

The complete nucleotide sequence of a 14 kb segment of A. nidulans mtDNA reveals a rather compact organization of genes transcribed from the same strand and coding for two functionally known proteins, seven unidentified polypeptides (URFs), 24 tRNAs and two rRNAs. One of the URFs is located in the intron of the L-rRNA gene and codes for a basic protein of 410 residues. The other URFs are in spacer regions and code for hydrophobic proteins. URFa is homologous to human URF4, and URFb produces a polypeptide of 48 residues resembling the human URF6L product (hydrophobic N-terminus, basic C-terminus). The ATPase subunit 6 genes from mitochondria and E. coli appear to share a common ancestor. The codon frequencies of identified genes and URFs are similar, and codons ending with G or C are rarely used. The structures of tRNAs specific for arginine, asparagine, tyrosine and histidine are deduced from gene sequences.

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