TABLE 2.

Supposed Fe–S cluster biogenesis genes in the cyanobacterium Synechocystis 6803.

Protein name	Open reading frame	Proposed function	Phenotype of mutants	References
SUF system
SufR	sll0088	Regulatory repressor	No visible phenotype	Wang et al., 2004; Seki et al., 2006; Shen et al., 2007
SufA	slr14l7	Carrier protein, possible iron carrier	No visible phenotype	Morimoto et al., 2002; Wollenberg et al., 2003; Balasubramanian et al., 2006
SufB	Slr0074	Fe-S cluster assembly scaffold	Lethal	Balasubramanian et al., 2006; Zang et al., 2017
SufC	slr0075	Fe-S cluster assembly component, provide energy	Lethal	Balasubramanian et al., 2006; Zang et al., 2017
SufD	slr0076	Fe-S cluster assembly component	Lethal	Balasubramanian et al., 2006; Zang et al., 2017
SufS	Slr0077	Cysteine desulphurase sulphur donor	Lethal	Seidler et al., 2001; Tirupati et al., 2004; Balasubramanian et al., 2006; Zang et al., 2017
SufE	Slr1419	Enhances SufS activity	Lethal	Balasubramanian et al., 2006; Zang et al., 2017
ISC system
IscR	Slr0846	Regulatory represser	Not studied	Uncharacterized
IscSI	str0387	Cysteine desulphurase, sulphur donor	No visible phenotype	Seidler et al., 2001; Behshad et al., 2004; Tirupati et al., 2004
lscS2	sll0704	Cysteine desulphurase, sulphur donor	No visible phenotype	Seidler et al., 2001; Tirupati et al., 2004
IscA	slr1565	Fe-S cluster assembly scaffold, posible iron donor	No visible phenotype	Morimoto et al., 2003
HscA	sll0170	Mollecular chaperone	Not studied	Uncharacterized
HscB	sll0169	Mollecular chaperone	Not studied	Uncharacterized
Fdx	Slr0148	Electron transfer	Not studied	Uncharacterized
NIF system
NifU like	ssl2667	Fe-S cluster assembly	Lethal	Nishio and Nakai, 2000; Seidler et al., 2001; Balasubramanian et al., 2006