Map of the genomic segment encoding [FeFe]-hydrogenase and its associated maturases.

<p>The direction of the arrows indicates the transcriptional orientation of the genes. Green, anaerobic metabolism enzyme-encoding gene located on the forward strand. Red, anaerobic metabolism enzyme-encoding gene located on the reverse strand. Gray, predicted gene encoding a product not evidently involved in anaerobic metabolism. Predicted genes annotated according to top BLAST hits in dictyBase: A. Similar to interferon-related protein PC4-like. B. Region with similarity to <i>Dictyostelium</i> hypothetical protein, possibly truncated at the 5′ end. C. Similar to importin beta 4. D. Low similarity to <i>Dictyostelium</i> vasodilator-stimulated phosphoprotein. E. Similar to RNA-binding region RNP-1 domain-containing protein. F. Similar to molybdenum cofactor synthesis protein 1. G. Similar to molybdenum cofactor synthesis protein 2. H. Region with similarity to sequences annotated as hypothetical protein in GenBank, but without tBLASTx hits in dictyBase. I. Similar to PHD Zn finger-containing protein. J. Low similarity to <i>Dictyostelium</i> hypothetical protein. K. Region without significant hits in either GenBank or dictyBase, but which corresponds to EST sequence and apparently contains an intron.