PlantRegMap/PlantTFDB v5.0
Plant Transcription Factor Database
Previous version: v3.0 v4.0
Coffea eugenioides
Species TF ID Description
XP_027148082.1MIKC_MADS family protein
XP_027148112.1MIKC_MADS family protein
XP_027149247.1MIKC_MADS family protein
XP_027149248.1MIKC_MADS family protein
XP_027149663.1MIKC_MADS family protein
XP_027149857.1MIKC_MADS family protein
XP_027150164.1MIKC_MADS family protein
XP_027150522.1MIKC_MADS family protein
XP_027150561.1MIKC_MADS family protein
XP_027150624.1MIKC_MADS family protein
XP_027151189.1MIKC_MADS family protein
XP_027151190.1MIKC_MADS family protein
XP_027151191.1MIKC_MADS family protein
XP_027151192.1MIKC_MADS family protein
XP_027151193.1MIKC_MADS family protein
XP_027151194.1MIKC_MADS family protein
XP_027153536.1MIKC_MADS family protein
XP_027153537.1MIKC_MADS family protein
XP_027153948.1MIKC_MADS family protein
XP_027154028.1MIKC_MADS family protein
XP_027154029.1MIKC_MADS family protein
XP_027154053.1MIKC_MADS family protein
XP_027154054.1MIKC_MADS family protein
XP_027156423.1MIKC_MADS family protein
XP_027159620.1MIKC_MADS family protein
XP_027159621.1MIKC_MADS family protein
XP_027160324.1MIKC_MADS family protein
XP_027160325.1MIKC_MADS family protein
XP_027160326.1MIKC_MADS family protein
XP_027160327.1MIKC_MADS family protein
XP_027160328.1MIKC_MADS family protein
XP_027160914.1MIKC_MADS family protein
XP_027161167.1MIKC_MADS family protein
XP_027161168.1MIKC_MADS family protein
XP_027163090.1MIKC_MADS family protein
XP_027163327.1MIKC_MADS family protein
XP_027163492.1MIKC_MADS family protein
XP_027163493.1MIKC_MADS family protein
XP_027163557.1MIKC_MADS family protein
XP_027167302.1MIKC_MADS family protein
XP_027167303.1MIKC_MADS family protein
XP_027169483.1MIKC_MADS family protein
XP_027172654.1MIKC_MADS family protein
XP_027174162.1MIKC_MADS family protein
XP_027177611.1MIKC_MADS family protein
XP_027179312.1MIKC_MADS family protein
XP_027180140.1MIKC_MADS family protein
XP_027183356.1MIKC_MADS family protein
XP_027183402.1MIKC_MADS family protein
XP_027184834.1MIKC_MADS family protein
XP_027184835.1MIKC_MADS family protein
XP_027184837.1MIKC_MADS family protein
XP_027184838.1MIKC_MADS family protein
MIKC_MADS (MIKC-type MADS) Family Introduction

The best studied plant MADS-box transcription factors are those involved in floral organ identity determination. Analysis of homeotic floral mutants resulted in the formulation of a genetic model, named the ABC model, that explains how the combined functions of three classes of genes (A, B, and C) determine the identity of the four flower organs (reviewed by Coen and Meyerowitz, 1991). Arabidopsis has two A-class genes (AP1 and AP2 [Bowman et al., 1989]), two B-class genes (PI and AP3), and a single C-class gene (AG), of which only AP2 is not a MADS-box gene. Recently, it was shown that the Arabidopsis B- and C-function genes, which control petal, stamen, and carpel development, are functionally dependent on three highly similar MADS-box genes, SEP1, SEP2, and SEP3 (Pelaz et al., 2000). Interestingly, only when mutant knockout alleles of the three SEP genes were combined in a triple sep1 sep2 sep3 mutant was loss of petal, stamen, and carpel identity observed, resulting in a flower composed of only sepals. This example shows that redundancy occurs in the MADS-box gene family, which complicates reverse genetic strategies for gene function analysis. The SHP genes provide another example of MADS-box gene redundancy. shp1 and shp2 single mutants do not exhibit any phenotypic effect, whereas in the double mutant, development of the dehiscence zone is disturbed in the fruit, resulting in a failure to release seeds (Liljegren et al., 2000)[1].

It has been proposed that there are at least 2 lineages (type I and type II) of MADS-box genes in plants, animals, and fungi. Most of the well-studied plant genes are type II genes and have three more domains than type I genes from the N to the C terminus of the protein:intervening (I) domain (~30 codons), keratin-lik e coiled-coil (K) domain (~70 codons), and Cterminal (C) domain (variable length). These genes are called the MIKC-type and are specific to plants[2].

The MADS-box is a DNA binding domain of 58 amino acids that binds DNA at consensus recognition sequences known as CArG boxes [CC(A/T)6GG] (Hayes et al., 1988; Riechmann et al., 1996b). The interaction with DNA has been studied in detail for the human and yeast MADS-box proteins thanks to the resolved crystal structures (Pellegrini et al., 1995; Santelli and Richmond, 2000). The I domain is less conserved and contributes to the specification of dimerization. The K domain is characterized by a coiled-coil structure, which facilitates the dimerization of MADS-box proteins (Davies et al., 1996; Fan et al., 1997). The C domain is the least conserved domain; in some cases, it has been shown to contain a transactivation domain or to contribute to the formation of multimeric MADS-box protein complexes (Egea-Cortines et al., 1999; Honma and Goto, 2001)[1].

1.Parenicova L, de Folter S, Kieffer M, Horner DS, Favalli C, Busscher J, Cook HE, Ingram RM, Kater MM, Davies B, Angenent GC, Colombo L.
Molecular and phylogenetic analyses of the complete MADS-box transcription factor family in Arabidopsis: new openings to the MADS world.
Plant Cell. 2003 Jul;15(7):1538-51.
PMID: 12837945
2.Nam J, dePamphilis CW, Ma H, Nei M.
Antiquity and evolution of the MADS-box gene family controlling flower development in plants.
Mol Biol Evol. 2003 Sep;20(9):1435-47. Epub 2003 May 30.
PMID: 12777513