Why Have Organelles Retained Genomes?

نویسندگان

  • John F Allen
  • William F Martin
چکیده

Genes in mitochondria and chloroplasts are co-located with their gene products to permit regulation of trans-membrane electron transport at the energetic boundary of the cell.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Why chloroplasts and mitochondria retain their own genomes and genetic systems: Colocation for redox regulation of gene expression.

Chloroplasts and mitochondria are subcellular bioenergetic organelles with their own genomes and genetic systems. DNA replication and transmission to daughter organelles produces cytoplasmic inheritance of characters associated with primary events in photosynthesis and respiration. The prokaryotic ancestors of chloroplasts and mitochondria were endosymbionts whose genes became copied to the gen...

متن کامل

The function of genomes in bioenergetic organelles.

Mitochondria and chloroplasts are energy-transducing organelles of the cytoplasm of eukaryotic cells. They originated as bacterial symbionts whose host cells acquired respiration from the precursor of the mitochondrion, and oxygenic photosynthesis from the precursor of the chloroplast. The host cells also acquired genetic information from their symbionts, eventually incorporating much of it int...

متن کامل

Analysis of Two Genomes from the Mitochondrion-Like Organelle of the Intestinal Parasite Blastocystis: Complete Sequences, Gene Content, and Genome Organization

Acquisition of mitochondria by the ancestor of all living eukaryotes represented a crucial milestone in the evolution of the eukaryotic cell. Nevertheless, a number of anaerobic unicellular eukaryotes have secondarily discarded certain mitochondrial features, leading to modified organelles such as hydrogenosomes and mitosomes via degenerative evolution. These mitochondrion-derived organelles ha...

متن کامل

Update on Gene Transfer from Organelles to the Nucleus Gene Transfer from Organelles to the Nucleus: How Much, What Happens, and Why?

Chloroplasts were once free-living cyanobacteria, mitochondria were once free-living proteobacteria, and both have preserved remnants of eubacterial genomes. But from the functional standpoint, both organelles have retained much more of their eubacterial biochemistry than is reflected in their DNA. The discrepancy between the number of genes that organelles encode and the number of eubacterial ...

متن کامل

Gene transfer from organelles to the nucleus: how much, what happens, and Why?

Chloroplasts were once free-living cyanobacteria, mitochondria were once free-living proteobacteria, and both have preserved remnants of eubacterial genomes. But from the functional standpoint, both organelles have retained much more of their eubacterial biochemistry than is reflected in their DNA. The discrepancy between the number of genes that organelles encode and the number of eubacterial ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Trends in genetics : TIG

دوره 15 9  شماره 

صفحات  -

تاریخ انتشار 1999