Table 7

Distribution of Ni transporters, urease and B₁₂-dependent enzymes in eukaryotes

Phylum

Num. of organisms

Ni utilization

B₁₂ utilization

Ni-utilizing organisms

NiCoT

(or Nic1p)

UreH

TgMTP1*

Urease

B₁₂-utilizing organisms

MetH

MCM

RNR II

Cryptophyta

1

-

-

-

-

-

-

-

-

-

Diplomonadida

1

-

-

-

-

-

-

-

-

-

Parabasalidea

1

-

-

-

-

-

-

-

-

-

Kinetoplastida

5

-

-

-

-

-

3

3

3

-

Stramenopiles

4

4

-

4

-

4

4

4

4

3

Alveolata/Perkinsea

1

-

-

-

-

-

1

1

-

-

Alveolata/Apicomplexa

13

-

-

-

-

-

-

-

-

-

Alveolata/Ciliophora

2

-

-

-

-

-

-

-

-

-

Rhodophyta

1

-

-

-

-

-

-

-

-

-

Viridiplantae/Chlorophyta

3

3

-

3

-

3

3

3

-

-

Viridiplantae/Streptophyta

3

3

-

3

3

3

-

-

-

-

Dictyosteliida

1

-

-

-

-

-

1

1

1

1

Entamoebidae

3

-

-

-

-

-

-

-

-

-

Fungi/Ascomycota/Pezizomycotina

29

28

28

-

-

28

-

-

-

-

Fungi/Ascomycota/Saccharomycotina

24

-

-

-

-

-

-

-

-

-

Fungi/Ascomycota/Schizosaccharomycetes

2

2

2

-

-

2

-

-

-

-

Fungi/Basidiomycota

8

8

8

-

-

8

-

-

-

-

Fungi/Microsporidia

1

-

-

-

-

-

-

-

-

-

Fungi/Zygomycota

1

1

1

-

-

1

-

-

-

-

Metazoa/Pseudocoelomata/Nematoda

3

-

-

-

-

-

3

3

3

-

Metazoa/Coelomata/Others

2

2

-

-

-

2

2

2

2

-

Metazoa/Coelomata/Arthropoda (Insects)

19

-

-

-

-

-

-

-

-

-

Metazoa/Coelomata/Chordata/Others

10

-

-

-

-

-

10

10

10

-

Metazoa/Coelomata/Chordata/Mammals

22

-

-

-

-

-

22

22

22

-

Total

160

51

39

10

3

51

49

49

45

4

*: TgMTP1, Ni-related subfamily of cation-efflux family; MetH: B₁₂-dependent methionine synthase.

Zhang et al. BMC Genomics 2009 10:78   doi:10.1186/1471-2164-10-78