Q6JB15 · MEG1_MAIZE
- ProteinProtein MATERNALLY EXPRESSED GENE 1
- GeneMEG1
- StatusUniProtKB reviewed (Swiss-Prot)
- Organism
- Amino acids
- Protein existenceEvidence at protein level
- Annotation score4/5
Function
function
Regulates maternal nutrient uptake, sucrose partitioning, and seed biomass yield. Necessary and sufficient for the establishment and differentiation of the endosperm nutrient transfer cells located at the mother:seed interface. Exclusive expression of the maternal allele at the early stages of endosperm development. The maternal allele is hypomethylated. At later stages, expression becomes biallelic. Regulated by the transcription factor MRP1.
GO annotations
all annotations | all molecular function | nucleotide binding | molecular_function | nucleic acid binding | dna binding | chromatin binding | dna-binding transcription factor activity | rna binding | cytoskeletal motor activity | catalytic activity | nuclease activity | signaling receptor binding | structural molecule activity | transporter activity | binding | protein binding | translation factor activity, rna binding | lipid binding | kinase activity | transferase activity | hydrolase activity | oxygen binding | enzyme regulator activity | carbohydrate binding | signaling receptor activity | translation regulator activity | transcription regulator activity | other molecular function | all biological process | carbohydrate metabolic process | generation of precursor metabolites and energy | nucleobase-containing compound metabolic process | dna metabolic process | translation | lipid metabolic process | transport | response to stress | cell cycle | cell communication | signal transduction | cell-cell signaling | multicellular organism development | circadian rhythm | biological_process | metabolic process | catabolic process | biosynthetic process | response to light stimulus | response to external stimulus | tropism | response to biotic stimulus | response to abiotic stimulus | response to endogenous stimulus | embryo development | post-embryonic development | fruit ripening | abscission | pollination | flower development | cellular process | programmed cell death | photosynthesis | cellular component organization | cell growth | protein metabolic process | cellular homeostasis | secondary metabolic process | reproductive process | cell differentiation | protein modification process | growth | epigenetic regulation of gene expression | response to chemical | anatomical structure development | regulation of molecular function | other biological process | all cellular component | cellular_component | extracellular region | cell wall | intracellular anatomical structure | nucleus | nuclear envelope | nucleoplasm | nucleolus | cytoplasm | mitochondrion | lysosome | endosome | vacuole | peroxisome | endoplasmic reticulum | golgi apparatus | cytosol | ribosome | cytoskeleton | plasma membrane | chloroplast | plastid | thylakoid | membrane | external encapsulating structure | other cellular component | |||
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Aspect | Term | |
---|---|---|
Cellular Component | extracellular region | |
Cellular Component | plasma membrane |
Keywords
- Molecular function
Names & Taxonomy
Protein names
- Recommended nameProtein MATERNALLY EXPRESSED GENE 1
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageEukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > Liliopsida > Poales > Poaceae > PACMAD clade > Panicoideae > Andropogonodae > Andropogoneae > Tripsacinae > Zea
Accessions
- Primary accessionQ6JB15
- Secondary accessions
Proteomes
Genome annotation databases
Subcellular Location
UniProt Annotation
GO Annotation
Keywords
- Cellular component
PTM/Processing
Features
Showing features for signal, chain, glycosylation, disulfide bond.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Signal | 1-27 | |||||
Sequence: MEYKKRVDALVFFSLLLLGYFAAHAHG | ||||||
Chain | PRO_0000430073 | 28-88 | Protein MATERNALLY EXPRESSED GENE 1 | |||
Sequence: NGHVTDDVNVSAPAEEGILREKRAQCAQGFLPCKDNKCYCCIGGRTHDCYYTMAQCSHACF | ||||||
Glycosylation | 36 | N-linked (GlcNAc...) asparagine | ||||
Sequence: N | ||||||
Disulfide bond | 65↔87 | |||||
Sequence: CYCCIGGRTHDCYYTMAQCSHAC | ||||||
Disulfide bond | 68↔76 | |||||
Sequence: CIGGRTHDC |
Post-translational modification
Glycosylated.
Keywords
- PTM
Proteomic databases
PTM databases
Expression
Tissue specificity
Expressed exclusively in endosperm. Found in basal endosperm transfer cells.
Developmental stage
Expressed from 4 to 20 days after pollination.
Gene expression databases
Interaction
Protein-protein interaction databases
Structure
Family & Domains
Sequence similarities
Belongs to the MEG family.
Keywords
- Domain
Phylogenomic databases
Family and domain databases
Sequence & Isoform
- Sequence statusComplete
- Sequence processingThe displayed sequence is further processed into a mature form.
This entry describes 2 isoforms produced by Alternative splicing.
Q6JB15-1
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.
- Name1
- Length88
- Mass (Da)9,810
- Last updated2014-09-03 v2
- Checksum17E09BA3C3D6EBAD
Q6JB15-2
- Name2
- Differences from canonical
- 27-40: GNGHVTDDVNVSAP → G
Features
Showing features for alternative sequence.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Alternative sequence | VSP_055463 | 27-40 | in isoform 2 | |||
Sequence: GNGHVTDDVNVSAP → G |
Keywords
- Coding sequence diversity
- Technical term
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
AY536121 EMBL· GenBank· DDBJ | AAT09810.1 EMBL· GenBank· DDBJ | mRNA | ||
AY536120 EMBL· GenBank· DDBJ | AAT36287.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AC199699 EMBL· GenBank· DDBJ | - | Genomic DNA | No translation available. | |
EU957850 EMBL· GenBank· DDBJ | ACG29968.1 EMBL· GenBank· DDBJ | mRNA |