All plastids studied to date contain their own DNA, which is actually a
reduced "genome" derived from a cyanobacterial ancestor that was captured
early in the evolution of the eukaryotic cell. Land plant chloroplast
genomes typically contain around 110-120 unique genes. Some algae have
retained a large chloroplast genome with more than 200 genes, while the
plastid genomes from nonphotosynthetic organisms may retain only a few
Putative protein-coding genes are designated as ORF followed by the
number of amino acids, whereas ycf are those conserved in at least
some other organisms. The term ycf is designated for a hypothetical
chloroplast open reading frame.
This database contains annotated chloroplast/plastid genomes from the
Genomes section at NCBI.
You can search for genes by their annotated names, conduct flexible BLAST
searches, download protein and nucleotide sequences extracted from a selected
chloroplast genome, and browse the putative protein families (tribes) created
If you use the data from the Chloroplast Genome Database (ChloroplastDB) in a
publication, please cite our paper that describes the database:
L. Cui, N. Veeraraghavan, A.Richter, K. Wall, R. K. Jansen, J. Leebens-Mack,
I. Makalowska, and C. W. dePamphilis. ChloroplastDB: the chloroplast genome database.
Nucleic Acids Research, 2006, vol. 34, pp. D692-696.
We'd also appreciate hearing from you if
you find this database useful, or if you have suggestions for ways we can
improve the database.
Disclaimer: This database may contain annotation errors,
conflicts or missing genes due to the uneven quality of GenBank annotations.
If you have found such problems please report them to us.
Image from the public domain SWBIC biotech clipart.
Last database update on 21 June 2007