Q8LK56 (DME_ARATH) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 92.
History...
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Transcriptional activator DEMETER EC=3.2.2.- Alternative name(s): DNA glycosylase-related protein DME | ||||||
| Gene names |
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| Organism | Arabidopsis thaliana (Mouse-ear cress) [Reference proteome] | ||||||
| Taxonomic identifier | 3702 [NCBI] | ||||||
| Taxonomic lineage | Eukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliophyta › eudicotyledons › core eudicotyledons › rosids › malvids › Brassicales › Brassicaceae › Camelineae › Arabidopsis![]() |
Protein attributes
| Sequence length | 1987 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Transcriptional activator involved in gene imprinting. Catalyzes the release of 5-methylcytosine (5-meC) from DNA by a glycosylase/lyase mechanism. Allows the expression of the maternal copy of the imprinted MEA gene before fertilization, possibly by antagonizing or suppressing DNA methylation on target promoter. Probably acts by nicking the MEA promoter. Required for stable reproducible patterns of floral and vegetative development. Ref.1 Ref.2 Ref.7 |
| Cofactor | Binds 1 4Fe-4S cluster. The cluster is probably involved in the proper positioning of the protein along the DNA strand By similarity. |
| Subcellular location | |
| Tissue specificity | Mainly expressed in immature flower buds, then decreases as the flower matures. Expressed in the ovule carpels, but not expressed in pollen stamens. Expressed in developing and mature ovules (stages 12-14), then strongly decreases after fertilization. |
| Developmental stage | Maternally expressed. Expressed primarily in the central cell of gametophyte before fertilization. Not expressed in endosperm and embryo after fertilization. |
| Domain | The DEMETER domain, which is present in proteins of the subfamily, is related to the J-domain, but lacks some important conserved residues. |
| Miscellaneous | Although strongly related to DNA glycosylase proteins, it differs from these proteins because of its large size and its unique N-terminal basic domain. The DNA repair function has not been proved and may not exist. |
| Sequence similarities | Belongs to the DNA glycosylase family. DEMETER subfamily. |
| Sequence caution | The sequence CAB85562.1 differs from that shown. Reason: Erroneous gene model prediction. Was originally thought to correspond to three different genes At5g04560, At5g04570 and At5g04580. The sequence CAB85563.1 differs from that shown. Reason: Erroneous gene model prediction. Was originally thought to correspond to three different genes At5g04560, At5g04570 and At5g04580. The sequence CAB85564.1 differs from that shown. Reason: Erroneous gene model prediction. Was originally thought to correspond to three different genes At5g04560, At5g04570 and At5g04580. |
Ontologies
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 3 (identifier: Q8LK56-3) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 1 (identifier: Q8LK56-1) The sequence of this isoform differs from the canonical sequence as follows: 1-258: Missing. | ||||||
| Isoform 2 (identifier: Q8LK56-2) The sequence of this isoform differs from the canonical sequence as follows: 259-1571: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 1987 | 1987 | Transcriptional activator DEMETER | PRO_0000102245 | |||||
Regions | |||||||||
| Region | 955 – 1054 | 100 | DEMETER | ||||||
| Compositional bias | 291 – 366 | 76 | Lys-rich (basic) | ||||||
| Compositional bias | 473 – 625 | 153 | Gln-rich | ||||||
Sites | |||||||||
| Metal binding | 1629 | 1 | Iron-sulfur (4Fe-4S) By similarity | ||||||
| Metal binding | 1636 | 1 | Iron-sulfur (4Fe-4S) By similarity | ||||||
| Metal binding | 1639 | 1 | Iron-sulfur (4Fe-4S) By similarity | ||||||
| Metal binding | 1645 | 1 | Iron-sulfur (4Fe-4S) By similarity | ||||||
Natural variations | |||||||||
| Alternative sequence | 1 – 258 | 258 | Missing in isoform 1. | VSP_019283 | |||||
| Alternative sequence | 259 – 1571 | 1313 | Missing in isoform 2. | VSP_007455 | |||||
Experimental info | |||||||||
| Mutagenesis | 1562 | 1 | D → N: Loss of activity and abnormal MEA imprinting. Ref.7 | ||||||
| Sequence conflict | 1679 | 1 | Y → F in AAM77215. Ref.1 | ||||||
Sequences
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References
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AF521596 mRNA. Translation: AAM77215.1. DQ335243 mRNA. Translation: ABC61677.1. AL162875 Genomic DNA. Translation: CAB85562.1. Sequence problems. AL162875 Genomic DNA. Translation: CAB85563.1. Sequence problems. AL162875 Genomic DNA. Translation: CAB85564.1. Sequence problems. CP002688 Genomic DNA. Translation: AED90760.1. CP002688 Genomic DNA. Translation: AED90761.1. AK117994 mRNA. Translation: BAC42629.1. BT005357 mRNA. Translation: AAO63421.1. |
| IPI | IPI00516439. IPI00534354. IPI00760328. |
| PIR | T48452. T48453. T48454. |
| RefSeq | NP_001078527.1. NM_001085058.1. NP_196076.2. NM_120538.2. |
| UniGene | At.33104. |
3D structure databases | |
| ProteinModelPortal | Q8LK56. |
| ModBase | Search... |
Proteomic databases | |
| PaxDb | Q8LK56. |
| PRIDE | Q8LK56. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| EnsemblPlants | AT5G04560.2; AT5G04560.2; AT5G04560. |
| GeneID | 830335. |
| KEGG | ath:AT5G04560. |
Organism-specific databases | |
| TAIR | At5g04560. |
Phylogenomic databases | |
| eggNOG | COG0177. |
| HOGENOM | HOG000112227. |
| InParanoid | Q8LK56. |
| OMA | CTEITES. |
| PhylomeDB | Q8LK56. |
| ProtClustDB | CLSN2690787. |
Gene expression databases | |
| Genevestigator | Q8LK56. |
Family and domain databases | |
| Gene3D | 1.10.1670.10. 1 hit. 1.10.340.30. 1 hit. |
| InterPro | IPR011257. DNA_glycosylase. IPR003651. Endouclease3_FeS-loop_motif. IPR003265. HhH-GPD_domain. IPR023170. HTH_base_excis_C. [Graphical view] |
| Pfam | PF00730. HhH-GPD. 1 hit. [Graphical view] |
| SMART | SM00525. FES. 1 hit. [Graphical view] |
| SUPFAM | SSF48150. DNA_glycsylse. 1 hit. |
| PROSITE | PS00764. ENDONUCLEASE_III_1. False negative. [Graphical view] |
| ProtoNet | Search... |
Entry information
| Entry name | DME_ARATH | ||||||||
| Accession | Primary (citable) accession number: Q8LK56 Secondary accession number(s): Q1WEY5 Q9LZ69 | ||||||||
| Entry history |
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| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Plant Protein Annotation Program | ||||||||
Relevant documents
| Arabidopsis thaliana Arabidopsis thaliana: entries and gene names |
| SIMILARITY comments Index of protein domains and families |

Clusters with
