Homology analysis

Gene ID At1g28300
Gene name LEC2 (LEAFY COTYLEDON 2)
Functional description Transcription factor that contains a B3 domain, a DNA-binding motif unique to plants and characteristic of several transcription factors. Plays critical roles both early and late during embryo development. LEC2 RNA accumulates primarily during seed development. LEC2 is required for the maintenance of suspensor morphology, specification of cotyledon identity, progression through the maturation phase, and suppression of premature germination. It establishes a cellular environment sufficient to initiate embryo development - ectopic, postembryonic expression of LEC2 in transgenic plants induces the formation of somatic embryos and other organ-like structures and often confers embryonic characteristics to seedlings and to reproductive and vegetative organs of mature plants.

Click gene/probe ID to show a list of genes that are homologous to the gene.

Paralogous genes

HFEvBSGene IDRepr. IDGene NameFunctional DescriptionO.I.C.G.S.X.Other DB
0.034e-550At3g24650822061ABI3 (ABA INSENSITIVE 3)Homologous to the maize transcription factor Viviparous-1. Full length ABI3 protein binds to the highly conserved RY motif [DNA motif CATGCA(TG)], present in many seed-specific promoters, and the B3 domains of this transcription factor is necessary for the specific interaction with the RY element. Transcriptional activity of ABI3 requires the B3 DNA-binding domain and an activation domain. In addition to the known N-terminal-located activation domain, a second transcription activation domain was found in the B1 region of ABI3. ABI3 is essential for seed maturation. Regulator of the transition between embryo maturation and early seedling development. Putative seed-specific transcriptional activator. Mutants exhibit decreased responsiveness to ABA suggesting that ABI3 protein participates in the ABA perception/transduction cascade. Based on double mutant analyses, ABI3 interacts genetically with both FUS3 and LEC1 and is involved in controlling accumulation of chlorophyll and anthocyanins, sensitivity to abscisic acid, and expression of the members of the 12S storage protein gene family. In addition, both FUS3 and LEC1 regulate positively the abundance of the ABI3 protein in the seed.O.I.C.G.S.X.
0.041e-138At3g26790822293FUS3 (FUSCA 3)Transcriptional factor with high similarity to the B3 region of the VP1/ABI3-like proteins. Full length FUS3 protein binds to the highly conserved RY motif [DNA motif CATGCA(TG)], present in many seed-specific promoters, and the B3 domains of this transcription factor is necessary for the specific interaction with the RY element. Transcriptional activity of FUS3 requires the B3 DNA-binding domain and an activation domain. FUS3 specifies cotyledon identity. Regulator of gene expression during late embryogenesis. Involved in the control foliar organ identity in Arabidopsis by regulating the synthesis of two hormones, abscisic acid and gibberellin. FUS3 together with LEC1 positively regulate the abundance of the ABI3 protein in the seed.O.I.C.G.S.X.
0.015e-136At5g16780831541DOT2 (DEFECTIVELY ORGANIZED TRIBUTARIES 2)Encodes a protein belonging to SART-1 family. The gene is expressed in the basal region of the developing embryo during heart stage. Phenotypic analyses of dot2 mutants suggest that this protein plays a role in root, shoot, and flower development. dot2 mutants are dwarved plants that display an aberrant spurred leaf venation pattern and fail to flower. In the roots DOT2 appears to be require for normal meristem organization and maintenance and the proper expression of PIN and PLT genes.O.I.C.G.S.X.
0.025e-136At2g30470817597HSI2 (HIGH-LEVEL EXPRESSION OF SUGAR-INDUCIBLE GENE 2)HSI2 is a member of a novel family of B3 domain proteins with a sequence similar to the ERF-associated amphiphilic repression (EAR) motif. It functions as an active repressor of the Spo minimal promoter (derived from a gene for sweet potato sporamin A1) through the EAR motif. It contains a plant-specific B3 DNA-binding domain. The Arabidopsis genome contains 42 genes with B3 domains which could be classified into three families that are represented by ABI3, ARF1 and RAV1. HSI2 belongs to the ABI3 family. It is expressed at similar levels in all organs. Treatment with 6% sucrose showed a slight increase in transcript levels after 24 h. No changes were observed after treatment with 50ÁM ABA. It is localized in the nucleus via a nuclear localization sequence located in the fourth conserved region of the C-terminal B3 domain.O.I.C.G.S.X.
0.025e-136At2g19630816482F-box family proteinF:molecular_function unknown;P:biological_process unknown;C:cellular_component unknown;PO.I.C.G.S.X.
0.015e-136At1g50450841467binding / catalyticF:binding, catalytic activity;P:metabolic process;C:chloroplast;BOFMPAO.I.C.G.S.X.
0.025e-136At1g16920838263ATRABA1B (ARABIDOPSIS RAB GTPASE HOMOLOG A1B)small GTP-binding protein (Rab11)similar to YPT3/RAB11 proteins in yeast and mammals, respectively. YPT3/RAB11 is involved in intracellular protein trafficking.O.I.C.G.S.X.
0.022e+034At5g50260835091cysteine proteinase, putativeF:cysteine-type endopeptidase activity, cysteine-type peptidase activity;P:proteolysis;C:endomembrane system;MOPVBAFO.I.C.G.S.X.
0.012e+034At5g03320831876protein kinase, putativeF:protein kinase activity, kinase activity, ATP binding;P:protein amino acid phosphorylation;C:chloroplast;MPOBFVAO.I.C.G.S.X.

Orthologous genes

HFEvBSGene IDOrganismRepr. IDGene NameFunctional DescriptionEvAGI codeArabidopsis gene nameO.I.C.G.S.X.Other DB
0.038e-136HgAffx.19705.1.S1_atGlycine maxCA939475--4e-1At3g13437unknown proteinO.I.C.G.S.X.
0.042e-550Contig10484_atHordeum vulgareContig10484--6e-10At3g24650ABI3 (ABA INSENSITIVE 3)O.I.C.G.S.X.
0.057e-240Os01g0713600Oryza sativaAK109920.1-Transcriptional factor B3 family protein3e-6At3g26790FUS3 (FUSCA 3)O.I.C.G.S.X.
0.218e-756PtpAffx.203883.1.S1_x_atPopulus trichocarpapmrna7670hypothetical protein-1e-7At1g28300LEC2 (LEAFY COTYLEDON 2)O.I.C.G.S.X.
0.036e-756Ta.42.1.S1_atTriticum aestivumAB047554.1--5e-6At3g24650ABI3 (ABA INSENSITIVE 3)O.I.C.G.S.X.
0.026e-1341614672_atVitis viniferaCF204524.1--3e-1At4g18335unknown proteinO.I.C.G.S.X.
0.032e-859Zm.24.1.S1_atZea maysM60214.1viviparous1-3e-17At3g24650ABI3 (ABA INSENSITIVE 3)O.I.C.G.S.X.



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