Table 1 Information about the 20 experimentally confirmed circular bacteriocins and their producer strains. ^P denotes the characteristic is putative based on the shared characteristics with the other circular bacteriocins

i

Aureocyclicin 4185

Staphylococcus aureus 4185

Model based on carnocyclin A

pRJ101

Unknown (data unavailable)

11

Y

KF836421

[18]

i

Enterocin NKR-5-3B

Enterococcus faecium NKR-5-3B

NMR solution structure

Unknown (data unavailable)

N

5

Y

LC068607

[11]

i

Amylocyclicin

Bacillus amyloliquefaciens FZB42

N/A

Chromosome

N

6

Y

CP000560.1

[19]

i

Amylocyclicin CMW1

Bacillus amyloliquefaciens CMW1

N/A

Chromosome

N

6

Y

DF836085

[20]

i

AS-48

Enterococcus faecalis subsp. liquefaciens S-48

NMR solution structure

pMB2

Y

10

Y

AJ438950.1

[3]

i

bacA

Enterococcus faecalis 39–5

N/A

pPD1

Y

9

Y

D85752

[21]

i

Carnocyclin A

Carnobacterium maltaromaticum UAL307

NMR

Unknown (data unavailable)

Unknown (data unavailable)

10

Y

EU624394

[22]

i

Circularin A

Clostridium beijerinckii ATCC 25752

N/A

Chromosome

N

8

Y

AJ566621.1

[23]

i

Thermocin 458

Geobacillus stearothermophilus DSM 458

N/A

Chromosome

N

8

Y

NZ_CP016552.1

[24]

i

Garvicin ML

Lactococcus garvieae DCC43

PSIPRED and Jpred3 model

Chromosome

N

8^P

Y

NZ_AMQS01000001

[25]

i

Lactocyclicin Q

Lactococcus sp. QU 12

Model using PSIPRED

Unknown (data unavailable)

Unknown (data unavailable)

Unknown (data unavailable)

Y

AB462499.1

[26]

i

Leucocyclicin Q

Leuconostoc mesenteroides TK41401

N/A

Unknown (data unavailable)

Unknown (data unavailable)

5

Y

AB795997.1

[27]

i

Pumilarin

Bacillus pumilus B4107

N/A

Chromosome

N

5

Y

NZ_AMDH01000012.1

[28]

i

Uberolysin

Streptococcus uberis 42

N/A

Chromosome

N

6^P

Y

DQ650653

[29]

ii

Acidocin B

Lactobacillus acidophilus M46

NMR solution structure

pCV461

Unknown (data unavailable)

7

Y

KP728900.1

[30]

ii

Butyrivibriocin AR10

Butyrivibrio fibrisolvens AR10

N/A

Chromosome

N

5

Y

AF076529

[31]

ii

Paracyclicin

Lactobacillus. paracesei subsp. paracasei JCM 8130/

DSM 5622

N/A

pLBPC-1

Y

7^P

Y

NZ_AP012542.1

[32]

ii

Gassericin A/

Reutericin 6

Lactobacillus gasseri LA39/

Lactobacillus reuteri LA6

N/A

pLgLA39

Y

7

Y

AB436615.1

[2]

ii

Plantacyclin B21AG

Lactobacillus plantarum B21

N/A

pB21AG01

Y^P

7

Y

NZ_CP025732.1

[33]

ii

Plantaricyclin A

Lactobacillus plantarum NI326

N/A

pB21AG01-like plasmid

Y^P

7

Y

NZ_NDXC01000075.1

[4]