PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Cicer arietinum
M-type_MADS Family
Species TF ID Description
XP_004487221.1M-type_MADS family protein
XP_004488297.1M-type_MADS family protein
XP_004488298.1M-type_MADS family protein
XP_004488302.1M-type_MADS family protein
XP_004489898.2M-type_MADS family protein
XP_004490182.1M-type_MADS family protein
XP_004490761.1M-type_MADS family protein
XP_004496032.1M-type_MADS family protein
XP_004496299.1M-type_MADS family protein
XP_004496797.1M-type_MADS family protein
XP_004496798.1M-type_MADS family protein
XP_004496799.1M-type_MADS family protein
XP_004496857.1M-type_MADS family protein
XP_004496858.1M-type_MADS family protein
XP_004497957.1M-type_MADS family protein
XP_004499496.2M-type_MADS family protein
XP_004499514.1M-type_MADS family protein
XP_004500453.1M-type_MADS family protein
XP_004500454.1M-type_MADS family protein
XP_004500455.1M-type_MADS family protein
XP_004500456.1M-type_MADS family protein
XP_004500457.1M-type_MADS family protein
XP_004500461.1M-type_MADS family protein
XP_004501539.1M-type_MADS family protein
XP_004502140.1M-type_MADS family protein
XP_004503191.1M-type_MADS family protein
XP_004504539.1M-type_MADS family protein
XP_004504915.1M-type_MADS family protein
XP_004505405.1M-type_MADS family protein
XP_004505413.1M-type_MADS family protein
XP_004507578.1M-type_MADS family protein
XP_004508828.1M-type_MADS family protein
XP_004510581.1M-type_MADS family protein
XP_004510582.1M-type_MADS family protein
XP_004511261.1M-type_MADS family protein
XP_004513973.1M-type_MADS family protein
XP_004516685.1M-type_MADS family protein
XP_004516817.1M-type_MADS family protein
XP_012570135.1M-type_MADS family protein
XP_012571308.1M-type_MADS family protein
XP_012571574.1M-type_MADS family protein
XP_012571575.1M-type_MADS family protein
XP_012572617.1M-type_MADS family protein
XP_012572618.1M-type_MADS family protein
XP_012573564.1M-type_MADS family protein
M-type_MADS (M-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