Color | TF Class | Number
--- | --- | ---
| Tryptophan cluster factors | 1
| AP2/EREBP | 2
| GCM domain factors | 3
| Basic leucine zipper factors (bZIP) | 4
| Other C4 zinc finger-type factors | 5
| Basic helix-loop-helix factors (bHLH) | 6
| Homeo domain factors | 7
| C3H(C) | 8
| TCP | 9
| B3 | 10
| C2H2 zinc finger factors | 11
| MADS box factors | 12
| Heat shock factors | 13
| C3H zinc finger factors | 14
| CPP | 15
| Heteromeric CCAAT-binding factors | 16
| EIL | 17
| Fork head/winged helix factors | 18
| HC3 zinc ribbon factors | 19
| A.T hook factors | 20
| ARID | 21
| BBR/BPC | 22
| HMG domain factors | 23
| RWP-RK | 24
| PLATZ | 25
| RING | 26
| Basic helix-loop-helix domain factors (bHLH) | 27
| CH3 | 28
| GRAS | 29
| LEAFY | 30
| Nuclear receptors with C4 zinc fingers | 31
| Other all-alpha-helical DNA-binding domains | 32
| S1Fa-like | 33
| mTERF | 34
| Unknown | 35
* | Unvalidated