Conserved motif | Present in | Size(aa) | Secondary structure | Function |
---|---|---|---|---|
Chromodomain | All | 61 | Twisted antiparallel β sheet (3 β strands and a helix) | Binds with H3K27me3 |
P olyc omb R epressor (PcR) box | All | 29-31 | β strand | Interacts with dRING |
AT-Hook | CBX2 | 29 | Coils | DNA binding |
AT-Hook Like (ATHL) | CBX4, CBX6, CBX7 and CBX8 | 15 | Coils | Present in several nuclear proteins (DNA binding?) |
CX 2.1 | CBX2 | 69-74 | Coils | - |
CX 2.2 | CBX2 | 25 | Coils | - |
CX 4.1 | CBX4 | 84-88 | Coils | - |
CX 4.2 | CBX4 | 29 | Coils | - |
CX 4.3 | CBX4 | 20 | Coils | SUMO binding |
CX 4.4 | CBX4 | 31 | Coils | - |
CX 6.1 | CBX6 | 82-88 | Coils | - |
CX 6.2 | CBX6 | 36 | Coils | - |
CX 6.3 | CBX6 | 15 | Coils | - |
CX 8.1 | CBX8 | 39-42 | Coils | - |
Poly histidine site | Insect PC CBX4 of mammals | 6-11 10-14 | Coils | - |
RED repeat | CBX8 of mammals | 13-37 | Coils | Present in several proteins |
CtBP interaction motif | CBX4 | 5 | Coils | CtBP binding |
Sumoylation site | CBX4 (Except fishes) | 4-5 | Coils | Sumoylation |
Serine rich region (SRR) | CBX2 CBX6 | 23-38 4-6 | Coils | - |
C onserved I nsect Pc box (CIPC) | Insect PC | 25-29 | Coils | Present in insect Polycomb |