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Figure 12:
Physical map of the genomic arrangement of the structural hydrogenase genes,
hupSL
(depicted in light grey),
the putative maturation genes of the small subunit of the uptake hydrogenase (dark grey), and
hyp
genes (black) of
fi lamentous nitrogen-fi xing cyanobacteria. (A)
Anabaena
sp. strain PCC 7120, (B)
Anabaena variabilis
ATCC 29413, (C)
Nostoc
punctiforme
PCC 73102, (D)
Nodularia spumigena
CCY9414, (E)
Lyngbya majuscula
CCAP 1446/4, and (F)
Trichodesmium
erythraeum
IMS101. The putative maturation genes of the small subunit of the uptake hydrogenase are located in
close vicinity to the structural genes,
hupSL
, and often in between
hupSL
and the
hyp
-genes. In
T
.
erythraeum
IMS101
hupSL
and the putative maturation genes are separated from the
hyp
-gene cluster by approximately 3.8 Mb. *Indicates
the N end fragment of the
hupL
(
hupL
5'), as annotated in vegetative cells. With the kind permission of P. Lindblad,
Department of Photochemistry and Molecular Science, Uppsala University, P.O. Box 523, S 75120, Uppsala,
Sweden [Agervald
et al.
(2008)
BMC Microbiology
8:
69; doi:10.1186/1471-2180-8-69].
