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Table 1 Organisms surveyed for the presence of the Rpl7a intron

From: An ancient spliceosomal intron in the ribosomal protein L7a gene (Rpl7a) of Giardia lamblia

Organism1 Number2 Intron Size (nt)
With intron:   
Opisthokonta (Metazoa only)   
Vertebrata (7)  
   Homo sapiens   277
Chordata (2)  
   Ciona intestinalis   586
Hexapoda (5)  
   Drosophila melanogaster   401
Amoebozoa   
   Dictyostelium discoideum   492
   Physarum polycephalum*   103
   Acanthamoeba castellanii*   82
   Hartmannella vermiformis*   58
Excavata   
Jakobidae   
   Jakoba libera*   541
   Reclinomonas americana*   877
   Seculamonas ecuadoriensis*   988
Trimastix (Trimastix pyriformis*)   172
Malawimonadidae   
   Malawimonas jakobiformis*   53, 553
   Malawimonas californianus*   54
Diplomonadida (Giardia lamblia)   109
Without intron:   
Chromalveolata   
Alveolata (14)  
Heterokonta (stramenopiles) (3)  
Plantae   
Streptophyta (5)  
Rhodophyta (2)  
Chlorophyta (1)  
Rhizaria   
Cercozoa (Bigelowiella natans*) (1)  
Opisthokonta   
Fungi (28)  
Nematoda/Trematoda (4)  
Hexapoda (1)  
Capsaspora owczarzaki*   
Amoebozoa   
Entamoebidae (4)  
Excavata   
Heterolobosea (Naegleria gruberi*)   
Euglenozoa   
   Trypanosomatidae (7)  
   Euglenida (Euglena gracilis*)   
Parabasalia (Trichomonas vaginalis)   
Diplomonadida (Spironucleus barkhanus*)   
  1. 1An asterisk (*) denotes organisms for which PCR amplification of the Rpl7a gene was performed; indicates that expressed sequence tag (EST) data exist that confirm the absence of the intron in the corresponding mRNA.
  2. 2Numbers in brackets refer to the number of organisms examined within each group; a complete list is provided in Additional File 3.
  3. 3Two versions of the Rpl7a gene exist in this organism, containing introns of slightly different length.