Comparative Analysis of Fatty Acid Desaturases in Cyanobacterial Genomes

Table 3

Conserved motifs of membrane desaturases in cyanobacteria. Note: X represents an unspecified amino acid. Δ9-1: clade 1 of Δ9 homologous genes, Δ9-2: clade 2 of Δ9 homologous genes, Δ9-3: clade 3 of Δ9 homologous genes, Δ9-4: clade 4 of Δ9 homologous genes, Δ9-5: clade 5 of Δ9 homologous genes, Δ12a : clade 3 of Δ12 homologous genes, Δ12b: clade 1 of Δ12 homologous genes, Δ12c : clade 4 of Δ12 homologous genes, Δ15: Δ15 desaturase, Δ6: Δ6 desaturase.

Name	H-box1	H-box2	H-box3
β-carotene ketolase	TGLFIX2HDXMH	K(N)HX2HH	CY(F)H(N)FGYHXEHH
β-carotene hydroxylase	GTVIHDAS(C)HX2AH	RVHL(M)Q(E)HHXHVN	GQNYHLI(V)HHLWPSI(V)PW
hydrocarbon oxygenase	HECXHRTAFA	FY(F)RRYHXWHHRXT	MWNMPF(Y)HXEHHL(F)
Δ9-1	GICLGYHRLLXHKSF	WX3HRXHHAX3D	YGEGWHNNHHX2PX5GX2WWE
Δ9-2	GXTLGXHRX3HRSF	WXGXHRXHHX2SD	GEGWHNNHHX4SARHGXXWWE
Δ9-3	TVLGVTLGLHRLXAHRS	WX2LHRHHHX2SDQ	WVAXLSFGEGWHNNHHAXPXSARHGL
Δ9-4	CLGVTXGYHRLLXHRX2	WXGLHRHHHXFSDT	WVAALTFGEGWHNNHHAXPXSA
Δ9-5	GX4GXHRXFXHX2F	WX3HRXHHX3D	GESWHNNHHXFX3AX2G
Δ12a	FVXGHDCGHRSF	WRX2HX2HHX2TN	HXPHHX4IPXYNLR
Δ12b	WVXAHECGHXAFH	WX2SHX2HHX3N	HX2HHX4PHYXA
Δ12c	FSLMHDCGHXSLF	WSX2HAXHHX2NG	HX2HHLXERIPNYXL
Δ15	FWXLFVVGHDCGHXSFS	HGWRISHRTHHXNTGN	IHHXIGTHVAHHIF
Δ6	HDX2HX3S	WX3HX2LHHXYTNI	GGLNXQ(H)X2HHLFPXICH