Average gene length

Range prokaryotes 924±9 bp: eukaryotes 1,346±28 bp bp
Organism Various
Reference Xu L, Chen H, Hu X, Zhang R, Zhang Z, Luo ZW. Average gene length is highly conserved in prokaryotes and eukaryotes and diverges only between the two kingdoms. Mol Biol Evol. 2006 Jun23(6):1107-8. p.1107 right column top paragraphPubMed ID16611645
Comments p.1107 right column top paragraph:"It can be seen from figure 1 that there is a perfect linear relationship between the total coding sequence and the number of genes in both prokaryotic and eukaryotic genomes. The perfect linear relationship does hold between the number of genes and the total sequence length in the prokaryotes but it does not in the eukaryotes probably because of introns, transposable elements, and junk DNA in the eukaryotic genomes (data not shown). The mean (standard error), the coefficients of skewness, and the coefficients of kurtosis of MLGCS [mean length of genic coding sequence] were estimated as 924 (9) bp, 0.1952, and 3.3501 for the prokaryotic group and as 1,346 (28) bp, 0.1723, and 2.5661 for the eukaryotic group, respectively. The analyses indicate that the genic coding sequence has a relatively constant average length in both prokaryotes and eukaryotes in spite of the remarkable variation in the coding sequence length among individual genes within these genomes. The coding sequence of a gene in the eukaryote kingdom is on average 445 bp longer than that in the prokaryotes."
Entered by Uri M
ID 111922