Top cofit genes for Atu3899 from Agrobacterium fabrum C58

siroheme synthase
SEED: Siroheme synthase / Precorrin-2 oxidase (EC 1.3.1.76) / Sirohydrochlorin ferrochelatase (EC 4.99.1.4) / Uroporphyrinogen-III methyltransferase (EC 2.1.1.107)
KEGG: uroporphyrin-III C-methyltransferase / precorrin-2 dehydrogenase / sirohydrochlorin ferrochelatase

Rank	Hit	Name	Description	Conserved?	Cofitness
1	Atu3683		peptide synthetase, siderophore biosynthesis protein	no	0.29
2	Atu3675		peptide synthetase, siderophore biosynthesis protein	no	0.27
3	Atu1808		UDP-glucose:ceramide glycosyltransferase	no	0.26
4	Atu3682		non-ribosomal peptide synthetase, siderophore biosynthesis protein	no	0.26
5	Atu1800		hypothetical protein	no	0.22
6	Atu3681		polyketide synthase	no	0.22
7	Atu1768		hypothetical protein	no	0.21
8	Atu3672		polyketide synthase	no	0.21
9	Atu0958		hypothetical protein	no	0.21
10	Atu3296		two component response regulator for C4-dicarboxylate transport	no	0.21
11	Atu3692		sigma factor	no	0.20
12	Atu2757		nitrogen regulatory protein PII	no	0.20
13	Atu1445		two component sensor kinase	0.59	0.20
14	Atu4242		hypothetical protein	no	0.20
15	Atu1790		ABC transporter, membrane spanning protein (sugar)	no	0.19
16	Atu3614		glyoxalase II	0.64	0.19
17	Atu4724		hypothetical protein	no	0.19
18	Atu3959		aldehyde dehydrogenase	0.62	0.18
19	Atu3685		thioesterase, siderophore biosynthesis protein	no	0.18
20	Atu1792		ABC transporter, nucleotide binding/ATPase protein (sugar)	no	0.18

Or look for negative cofitness