A7Y3F4 · CEMA_IPOPU
- ProteinPotassium/proton antiporter CemA
- GenecemA
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids229 (go to sequence)
- Protein existenceInferred from homology
- Annotation score2/5
Function
function
Contributes to K+/H+ antiport activity by supporting proton efflux to control proton extrusion and homeostasis in chloroplasts in a light-dependent manner to modulate photosynthesis. Prevents excessive induction of non-photochemical quenching (NPQ) under continuous-light conditions. Indirectly promotes efficient inorganic carbon uptake into chloroplasts.
Catalytic activity
- H+(out) + K+(in) = H+(in) + K+(out)
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 | chloroplast inner membrane | |
Molecular Function | antiporter activity | |
Molecular Function | proton transmembrane transporter activity | |
Biological Process | potassium ion transport |
Keywords
- Biological process
- Ligand
Names & Taxonomy
Protein names
- Recommended namePotassium/proton antiporter CemA
- Alternative names
Gene names
Encoded on
- Chloroplast
Organism names
- Taxonomic lineageEukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > eudicotyledons > Gunneridae > Pentapetalae > asterids > lamiids > Solanales > Convolvulaceae > Ipomoeeae > Ipomoea
Accessions
- Primary accessionA7Y3F4
Subcellular Location
UniProt Annotation
GO Annotation
Plastid, chloroplast inner membrane ; Multi-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Transmembrane | 7-27 | Helical | ||||
Sequence: FTPLFYLSFIVFLPWWISFSF | ||||||
Transmembrane | 114-134 | Helical | ||||
Sequence: LICFVILSGYSIWGNENLVIL | ||||||
Transmembrane | 189-209 | Helical | ||||
Sequence: ILSGLVSTFPVILDTILKYWI |
Keywords
- Cellular component
PTM/Processing
Features
Showing features for chain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Chain | PRO_0000323245 | 1-229 | Potassium/proton antiporter CemA | |||
Sequence: MAKKKAFTPLFYLSFIVFLPWWISFSFKKCLESWITNWWNTGQSEIFLNDIQEKSILEKFIELEEFVFLDEMIKEYSETHPQEFRIGIHKETIQFIKIQNEGHIHTILHFSTNLICFVILSGYSIWGNENLVILNSWSREFLYNLSDTVKVFSILLLTDLCIGFHSPHGWELMIGSIYQDFGFGYNDQILSGLVSTFPVILDTILKYWIFRYLNRVSPSLVVIYHSMND |
Structure
Sequence
- Sequence statusComplete
- Length229
- Mass (Da)27,094
- Last updated2007-10-23 v1
- Checksum64147EC246C1B278
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
EU118126 EMBL· GenBank· DDBJ | ABV02360.1 EMBL· GenBank· DDBJ | Genomic DNA |