|
Subtype
|
Defining
feature
|
|
A
|
Asymmetric
recognition sequence
|
|
B
|
Cleaves
both sides of target on both strands
|
|
C
|
Symmetric
or asymmetric target. R and M functions in one polypeptide
|
|
E
|
Two
targets; one cleaved, one an effector
|
|
F
|
Two
targets, both cleaved coordinately
|
|
G
|
Symmetric
or asymmetric target. Affected by AdoMet
|
|
H
|
Symmetric
or asymmetric target. Similar to Type I gene structure
|
|
M
|
Subtype
IIP or IIA. Require methylated
target
|
|
P
|
Symmetric
target and cleavage sites
|
|
S
|
Asymmetric
target and cleavage sites
|
|
T
|
Symmetric
or asymmetric target. R genes are heterodimers
|
