P06257 · NU2C_MARPO
- ProteinNAD(P)H-quinone oxidoreductase subunit 2, chloroplastic
- GenendhB
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids501 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
NDH shuttles electrons from NAD(P)H:plastoquinone, via FMN and iron-sulfur (Fe-S) centers, to quinones in the photosynthetic chain and possibly in a chloroplast respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be plastoquinone. Couples the redox reaction to proton translocation, and thus conserves the redox energy in a proton gradient.
Catalytic activity
- a plastoquinone + NADH + (n+1) H+(in) = a plastoquinol + NAD+ + n H+(out)
a plastoquinone RHEA-COMP:9562 + CHEBI:57945 + (n+1) H+ (in)CHEBI:15378= a plastoquinol RHEA-COMP:9561 + CHEBI:57540 + n H+ (out)CHEBI:15378 - a plastoquinone + NADPH + (n+1) H+(in) = a plastoquinol + NADP+ + n H+(out)
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | chloroplast thylakoid membrane | |
Molecular Function | NADH dehydrogenase (ubiquinone) activity | |
Molecular Function | quinone binding | |
Biological Process | ATP synthesis coupled electron transport | |
Biological Process | photosynthesis, light reaction |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameNAD(P)H-quinone oxidoreductase subunit 2, chloroplastic
- EC number
- Alternative names
Gene names
Encoded on
- Chloroplast
Organism names
- Taxonomic lineageEukaryota > Viridiplantae > Streptophyta > Embryophyta > Marchantiophyta > Marchantiopsida > Marchantiidae > Marchantiales > Marchantiaceae > Marchantia
Accessions
- Primary accessionP06257
Subcellular Location
UniProt Annotation
GO Annotation
Plastid, chloroplast thylakoid membrane ; Multi-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Transmembrane | 15-35 | Helical | ||||
Sequence: ILPECILIFSLLIILIIDLTF | ||||||
Transmembrane | 40-60 | Helical | ||||
Sequence: TIWLYFISLTSLLISIIILLF | ||||||
Transmembrane | 82-102 | Helical | ||||
Sequence: IFQSFIVFCSILCIPLSIEYI | ||||||
Transmembrane | 107-127 | Helical | ||||
Sequence: MAIPEFLIFILTATVGGMFLC | ||||||
Transmembrane | 132-152 | Helical | ||||
Sequence: LVTIFVSLECLSLCSYLLCGY | ||||||
Transmembrane | 167-187 | Helical | ||||
Sequence: LLIGGTSSSILAYGFSWLYGL | ||||||
Transmembrane | 212-232 | Helical | ||||
Sequence: TFIAFICILVGLAFKLSLVPF | ||||||
Transmembrane | 244-264 | Helical | ||||
Sequence: PTPVVAFLSVTSKIAGLALAT | ||||||
Transmembrane | 278-298 | Helical | ||||
Sequence: WKIFLEILAILSMILGNLVAI | ||||||
Transmembrane | 307-327 | Helical | ||||
Sequence: LAYSSISQIGYILIGLITGDL | ||||||
Transmembrane | 333-353 | Helical | ||||
Sequence: MTIYVFFYIFMNLGTFACIIL | ||||||
Transmembrane | 378-398 | Helical | ||||
Sequence: FSLTLCLLSLGGLPPLTGFFG | ||||||
Transmembrane | 410-430 | Helical | ||||
Sequence: GFYLLVFIALITSVISLYYYL | ||||||
Transmembrane | 466-486 | Helical | ||||
Sequence: FVMIFCVLGSTFLGIIINPIF |
Keywords
- Cellular component
PTM/Processing
Features
Showing features for chain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Chain | PRO_0000117665 | 1-501 | NAD(P)H-quinone oxidoreductase subunit 2, chloroplastic | |||
Sequence: MKLELDMFFLYGSTILPECILIFSLLIILIIDLTFPKKDTIWLYFISLTSLLISIIILLFQYKTDPIISFLGSFQTDSFNRIFQSFIVFCSILCIPLSIEYIKCAKMAIPEFLIFILTATVGGMFLCGANDLVTIFVSLECLSLCSYLLCGYTKRDIRSNEAAIKYLLIGGTSSSILAYGFSWLYGLSGGETNIQKITNGLLNAETYNSSGTFIAFICILVGLAFKLSLVPFHQWTPDIYEGSPTPVVAFLSVTSKIAGLALATRILNILFSFSPNEWKIFLEILAILSMILGNLVAITQTSMKRMLAYSSISQIGYILIGLITGDLKGYTSMTIYVFFYIFMNLGTFACIILYSLRTGTDNIRDYAGLYIKDPLLSFSLTLCLLSLGGLPPLTGFFGKLYLFWCGWQSGFYLLVFIALITSVISLYYYLKIIKLILTKKNNEINPYIQAYIITSPTFFSKNPIEFVMIFCVLGSTFLGIIINPIFSFFQDSLSLSVFFIK |
Keywords
- PTM
Interaction
Subunit
NDH is composed of at least 16 different subunits, 5 of which are encoded in the nucleus.
Structure
Sequence
- Sequence statusComplete
- Length501
- Mass (Da)56,190
- Last updated1988-01-01 v1
- ChecksumDCD0AB08AAE3B260
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
X04465 EMBL· GenBank· DDBJ | CAA28058.1 EMBL· GenBank· DDBJ | Genomic DNA |