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Q7VD38

- CHLB_PROMA

UniProt

Q7VD38 - CHLB_PROMA

Protein

Light-independent protochlorophyllide reductase subunit B

Gene

chlB

Organism
Prochlorococcus marinus (strain SARG / CCMP1375 / SS120)
Status
Reviewed - Annotation score: 3 out of 5- Experimental evidence at protein leveli
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    • History
      Entry version 67 (01 Oct 2014)
      Sequence version 1 (01 Oct 2003)
      Previous versions | rss
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    Functioni

    Component of the dark-operative protochlorophyllide reductase (DPOR) that uses Mg-ATP and reduced ferredoxin to reduce ring D of protochlorophyllide (Pchlide) to form chlorophyllide a (Chlide). This reaction is light-independent. The NB-protein (ChlN-ChlB) is the catalytic component of the complex.UniRule annotation

    Catalytic activityi

    Protochlorophyllide a + reduced ferredoxin + 2 ATP + 2 H2O = chlorophyllide a + oxidized ferredoxin + 2 ADP + 2 phosphate.UniRule annotation

    Cofactori

    Binds 1 [4Fe-4S] cluster per heterodimer. The cluster is bound at the heterodimer interface by residues from both subunits.UniRule annotation

    Pathwayi

    Sites

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Metal bindingi36 – 361Iron-sulfur (4Fe-4S); shared with heterodimeric partnerUniRule annotation
    Active sitei290 – 2901Proton donorUniRule annotation

    GO - Molecular functioni

    1. 4 iron, 4 sulfur cluster binding Source: UniProtKB-HAMAP
    2. ATP binding Source: UniProtKB-HAMAP
    3. metal ion binding Source: UniProtKB-KW
    4. oxidoreductase activity, acting on iron-sulfur proteins as donors Source: InterPro
    5. oxidoreductase activity, acting on the CH-CH group of donors, iron-sulfur protein as acceptor Source: UniProtKB-HAMAP

    GO - Biological processi

    1. light-independent chlorophyll biosynthetic process Source: UniProtKB-UniPathway
    2. photosynthesis, dark reaction Source: InterPro

    Keywords - Molecular functioni

    Oxidoreductase

    Keywords - Biological processi

    Chlorophyll biosynthesis, Photosynthesis

    Keywords - Ligandi

    4Fe-4S, ATP-binding, Iron, Iron-sulfur, Metal-binding, Nucleotide-binding

    Enzyme and pathway databases

    BioCyciPMAR167539:GJN2-563-MONOMER.
    UniPathwayiUPA00670.

    Names & Taxonomyi

    Protein namesi
    Recommended name:
    Light-independent protochlorophyllide reductase subunit BUniRule annotation (EC:1.3.7.7UniRule annotation)
    Short name:
    DPOR subunit BUniRule annotation
    Short name:
    LI-POR subunit BUniRule annotation
    Gene namesi
    Name:chlBUniRule annotation
    Ordered Locus Names:Pro_0545
    OrganismiProchlorococcus marinus (strain SARG / CCMP1375 / SS120)
    Taxonomic identifieri167539 [NCBI]
    Taxonomic lineageiBacteriaCyanobacteriaProchloralesProchlorococcaceaeProchlorococcus
    ProteomesiUP000001420: Chromosome

    PTM / Processingi

    Molecule processing

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Chaini1 – 530530Light-independent protochlorophyllide reductase subunit BPRO_1000048411Add
    BLAST

    Interactioni

    Subunit structurei

    Protochlorophyllide reductase is composed of three subunits; ChlL, ChlN and ChlB. Forms a heterotetramer of two ChlB and two ChlN subunits.UniRule annotation

    Protein-protein interaction databases

    STRINGi167539.Pro0545.

    Structurei

    Secondary structure

    1
    530
    Legend: HelixTurnBeta strand
    Show more details
    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Beta strandi2 – 65
    Helixi12 – 2211
    Beta strandi23 – 319
    Helixi36 – 394
    Helixi40 – 445
    Beta strandi54 – 574
    Helixi62 – 665
    Helixi69 – 8416
    Beta strandi87 – 937
    Helixi95 – 1006
    Helixi104 – 1085
    Turni109 – 1124
    Beta strandi117 – 1193
    Turni124 – 1263
    Helixi129 – 14517
    Helixi159 – 1635
    Beta strandi168 – 1725
    Beta strandi178 – 1803
    Helixi181 – 19414
    Beta strandi198 – 2047
    Helixi209 – 2124
    Helixi213 – 2175
    Beta strandi218 – 2247
    Helixi226 – 24015
    Helixi252 – 26615
    Helixi277 – 2793
    Helixi282 – 2876
    Helixi289 – 2946
    Beta strandi298 – 3014
    Helixi305 – 31713
    Beta strandi322 – 3298
    Helixi331 – 3333
    Helixi334 – 34310
    Helixi354 – 36411
    Beta strandi367 – 3715
    Helixi373 – 38210
    Beta strandi386 – 3883
    Beta strandi390 – 3923
    Helixi395 – 3973
    Helixi407 – 41913
    Helixi425 – 4339
    Beta strandi438 – 4403
    Helixi446 – 4483
    Helixi483 – 4908
    Helixi494 – 4963
    Helixi497 – 51014
    Helixi518 – 52710

    3D structure databases

    Select the link destinations:
    PDBe
    RCSB PDB
    PDBj
    Links Updated
    EntryMethodResolution (Å)ChainPositionsPDBsum
    2YNMX-ray2.10D1-530[»]
    ProteinModelPortaliQ7VD38.
    ModBaseiSearch...
    MobiDBiSearch...

    Family & Domainsi

    Region

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Regioni425 – 4262Substrate bindingUniRule annotation

    Sequence similaritiesi

    Belongs to the ChlB/BchB/BchZ family.UniRule annotation

    Phylogenomic databases

    eggNOGiCOG2710.
    KOiK04039.
    OMAiELIQDQP.
    OrthoDBiEOG6WX4K1.

    Family and domain databases

    HAMAPiMF_00353. ChlB_BchB.
    InterProiIPR000510. Nase/OxRdtase_comp1.
    IPR013580. P-CP/CP_red_C.
    IPR005969. Protochl_reductB.
    IPR016209. Protochlorophyllide_Rdtase.
    [Graphical view]
    PfamiPF00148. Oxidored_nitro. 1 hit.
    PF08369. PCP_red. 1 hit.
    [Graphical view]
    PIRSFiPIRSF000163. PCP_ChlB. 1 hit.
    TIGRFAMsiTIGR01278. DPOR_BchB. 1 hit.

    Sequencei

    Sequence statusi: Complete.

    Q7VD38-1 [UniParc]FASTAAdd to Basket

    « Hide

    MELTLWTYEG PPHIGAMRIA TSMKGLHYVL HAPQGDTYAD LLFTMIERRG    50
    SRPPVTYTTF QARDLGGDTA ELVKGHIFEA VERFKPEALL VGESCTAELI 100
    QDQPGSLAKG MGLNIPIVSL ELPAYSKKEN WGASETFYQL IRGLLKEISE 150
    DSSNNAKQSW QEEGRRPRVN LLGPSLLGFR CRDDVLEIQK ILGENGIDIN 200
    VIAPLGASPS DLMRLPKADA NVCLYPEIAE STCLWLERNF KTPFTKVVPI 250
    GVKATQDFLE ELYELLGMEV SNSISNSDQS KLPWYSKSVD SNYLTGKRVF 300
    IFGDGTHVLA AARIANEELG FEVVGIGTYS REMARKVRAA ATELGLEALI 350
    TNDYLEVEES IKECAPELVL GTQMERHSAK RLGIPCAVIS TPMHVQDVPA 400
    RYSPQMGWEG ANVIFDDWVH PLMMGLEEHL IGMFRHDFEF TDGHQSHLGH 450
    LGGHASETKT SSKGINQSPN NHSPAGESIH WTSEGESELA KIPFFVRGKV 500
    RRNTEKYARQ AGCREIDGET LLDAKAHFGA 530
    Length:530
    Mass (Da):58,729
    Last modified:October 1, 2003 - v1
    Checksum:i7D5A10C8B8D0FF2E
    GO

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    AE017126 Genomic DNA. Translation: AAP99590.1.
    RefSeqiNP_874938.1. NC_005042.1.

    Genome annotation databases

    EnsemblBacteriaiAAP99590; AAP99590; Pro_0545.
    GeneIDi1461927.
    KEGGipma:Pro_0545.
    PATRICi23027723. VBIProMar8617_0560.

    Cross-referencesi

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    AE017126 Genomic DNA. Translation: AAP99590.1 .
    RefSeqi NP_874938.1. NC_005042.1.

    3D structure databases

    Select the link destinations:
    PDBe
    RCSB PDB
    PDBj
    Links Updated
    Entry Method Resolution (Å) Chain Positions PDBsum
    2YNM X-ray 2.10 D 1-530 [» ]
    ProteinModelPortali Q7VD38.
    ModBasei Search...
    MobiDBi Search...

    Protein-protein interaction databases

    STRINGi 167539.Pro0545.

    Protocols and materials databases

    Structural Biology Knowledgebase Search...

    Genome annotation databases

    EnsemblBacteriai AAP99590 ; AAP99590 ; Pro_0545 .
    GeneIDi 1461927.
    KEGGi pma:Pro_0545.
    PATRICi 23027723. VBIProMar8617_0560.

    Phylogenomic databases

    eggNOGi COG2710.
    KOi K04039.
    OMAi ELIQDQP.
    OrthoDBi EOG6WX4K1.

    Enzyme and pathway databases

    UniPathwayi UPA00670 .
    BioCyci PMAR167539:GJN2-563-MONOMER.

    Family and domain databases

    HAMAPi MF_00353. ChlB_BchB.
    InterProi IPR000510. Nase/OxRdtase_comp1.
    IPR013580. P-CP/CP_red_C.
    IPR005969. Protochl_reductB.
    IPR016209. Protochlorophyllide_Rdtase.
    [Graphical view ]
    Pfami PF00148. Oxidored_nitro. 1 hit.
    PF08369. PCP_red. 1 hit.
    [Graphical view ]
    PIRSFi PIRSF000163. PCP_ChlB. 1 hit.
    TIGRFAMsi TIGR01278. DPOR_BchB. 1 hit.
    ProtoNeti Search...

    Publicationsi

    1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
      Strain: SARG / CCMP1375 / SS120.

    Entry informationi

    Entry nameiCHLB_PROMA
    AccessioniPrimary (citable) accession number: Q7VD38
    Entry historyi
    Integrated into UniProtKB/Swiss-Prot: January 15, 2008
    Last sequence update: October 1, 2003
    Last modified: October 1, 2014
    This is version 67 of the entry and version 1 of the sequence. [Complete history]
    Entry statusiReviewed (UniProtKB/Swiss-Prot)
    Annotation programProkaryotic Protein Annotation Program

    Miscellaneousi

    Keywords - Technical termi

    3D-structure, Complete proteome, Reference proteome

    Documents

    1. PATHWAY comments
      Index of metabolic and biosynthesis pathways
    2. PDB cross-references
      Index of Protein Data Bank (PDB) cross-references
    3. SIMILARITY comments
      Index of protein domains and families

    External Data

    Dasty 3