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Entry version 113 (02 Jun 2021)
Sequence version 2 (11 Jul 2003)
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Protein

Light-independent protochlorophyllide reductase subunit B

Gene

chlB

Organism
Chlamydomonas reinhardtii (Chlamydomonas smithii)
Status
Reviewed-Annotation score:

Annotation score:3 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Protein inferred from homologyi <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>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

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the 'Function' section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

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

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section describes the metabolic pathway(s) associated with a protein.<p><a href='/help/pathway' target='_top'>More...</a></p>Pathwayi: chlorophyll biosynthesis (light-independent)

This protein is involved in the pathway chlorophyll biosynthesis (light-independent), which is part of Porphyrin-containing compound metabolism.UniRule annotation
View all proteins of this organism that are known to be involved in the pathway chlorophyll biosynthesis (light-independent) and in Porphyrin-containing compound metabolism.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the 'Description' field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi36Iron-sulfur (4Fe-4S); shared with heterodimeric partnerUniRule annotation1
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei441Proton donorUniRule annotation1

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionOxidoreductase
Biological processChlorophyll biosynthesis, Photosynthesis
Ligand4Fe-4S, ATP-binding, Iron, Iron-sulfur, Metal-binding, Nucleotide-binding

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
MetaCyc:CHRECP003-MONOMER

UniPathway: a resource for the exploration and annotation of metabolic pathways

More...
UniPathwayi
UPA00670

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>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
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:chlBUniRule annotation
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates if the gene coding for the protein originates from the hydrogenosome, the mitochondrion, the nucleomorph, different plastids or a plasmid. The absence of this section means that the gene is located in one of the main chromosomal element(s).<p><a href='/help/encoded_on' target='_top'>More...</a></p>Encoded oniPlastid; Chloroplast
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiChlamydomonas reinhardtii (Chlamydomonas smithii)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri3055 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaViridiplantaeChlorophytacore chlorophytesChlorophyceaeCS cladeChlamydomonadalesChlamydomonadaceaeChlamydomonas
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000006906 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chloroplast

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Keywords - Cellular componenti

Chloroplast, Plastid

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00002198171 – 687Light-independent protochlorophyllide reductase subunit BAdd BLAST687

Proteomic databases

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P36437

PRoteomics IDEntifications database

More...
PRIDEi
P36437

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>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

STRING: functional protein association networks

More...
STRINGi
3055.DAA00906

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni576 – 577Substrate bindingUniRule annotation2

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

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

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG502QUNZ, Eukaryota

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_025470_0_0_1

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P36437

Database of Orthologous Groups

More...
OrthoDBi
538441at2759

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.8.550, 1 hit

HAMAP database of protein families

More...
HAMAPi
MF_00353, ChlB_BchB, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR000510, Nase/OxRdtase_comp1
IPR013580, P-CP/CP_red_C
IPR042298, P-CP_red_C
IPR005969, Protochl_reductB

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00148, Oxidored_nitro, 3 hits
PF08369, PCP_red, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P36437-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKLAYWMYAG PAHIGVLRVS SSFKNVHAIM HAPLGDDYFN VMRSMLERER
60 70 80 90 100
DFTPVTASIV DRHVLARGSQ EKVVENITRK NKEETPDLIL LTPTCTSSIL
110 120 130 140 150
QEDLHNFVES ALAKPVQIDE HADHKVTQQS ALSSVSPLLP LEENTLIVSE
160 170 180 190 200
LDKKLSPSSK LHINMPNICI PEGEGEGEQT KNSIFVKSAT LTNLSEEELL
210 220 230 240 250
NQEHHTKTRN HSDVILADVN HYRVNELQAA DRTLEQIVRY YISQAQKQNC
260 270 280 290 300
LNITKTAKPS VNIIGIFTLG FHNQHDCREL KRLFNDLGIQ INEIIPEGGN
310 320 330 340 350
VHNLKKLPQA WFNFVPYREI GLMTAMYLKS EFNMPYVAIT PMGLIDTAAC
360 370 380 390 400
IRSICKIITT QLLNQTATVQ EPSKFIYPKA TSLEQTNILE TSQKETILKD
410 420 430 440 450
NPDSGNTLST TVEEIETLFN KYIDQQTRFV SQAAWFSRSI DCQNLTGKKA
460 470 480 490 500
VVFGDATHSA AMTKLLAREM GIKVSCAGTY CKHDADWFRE QVSGFCDQVL
510 520 530 540 550
ITDDHTQVGD MIAQLEPAAI FGTQMERHVG KRLDIPCGVI SAPVHIQNFP
560 570 580 590 600
LGYRPFLGYE GTNQIADLVY NSFNLGMEDH LLQIFGGHDS ENNSSIATHL
610 620 630 640 650
NTNNAINLAP GYLPEGEGSS RTSNVVSTIS SEKKAIVWSP EGLAELNKVP
660 670 680
GFVRGKVKRN TEKYALQKNC SMITVEVMYA AKEALSA
Length:687
Mass (Da):76,625
Last modified:July 11, 2003 - v2
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i7358517D85817882
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti44S → T in AAA16321 (PubMed:8219066).Curated1
Sequence conflicti210N → D in AAA16321 (PubMed:8219066).Curated1
Sequence conflicti532R → A in AAA16321 (PubMed:8219066).Curated1
Sequence conflicti616G → V in AAA16321 (PubMed:8219066).Curated1
Sequence conflicti623 – 627SNVVS → FKCSVF in AAA16321 (PubMed:8219066).Curated5

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
L13782 Genomic DNA Translation: AAA16321.1
U02526 Genomic DNA Translation: AAB06265.1
FJ423446 Genomic DNA Translation: ACJ50093.1
BK000554 Genomic DNA Translation: DAA00906.1

Protein sequence database of the Protein Information Resource

More...
PIRi
S39491

NCBI Reference Sequences

More...
RefSeqi
NP_958360.1, NC_005353.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
2716966

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
cre:ChreCp003

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
L13782 Genomic DNA Translation: AAA16321.1
U02526 Genomic DNA Translation: AAB06265.1
FJ423446 Genomic DNA Translation: ACJ50093.1
BK000554 Genomic DNA Translation: DAA00906.1
PIRiS39491
RefSeqiNP_958360.1, NC_005353.1

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

SWISS-MODEL Interactive Workspace

More...
SWISS-MODEL-Workspacei
Submit a new modelling project...

Protein-protein interaction databases

STRINGi3055.DAA00906

Proteomic databases

PaxDbiP36437
PRIDEiP36437

Genome annotation databases

GeneIDi2716966
KEGGicre:ChreCp003

Phylogenomic databases

eggNOGiENOG502QUNZ, Eukaryota
HOGENOMiCLU_025470_0_0_1
InParanoidiP36437
OrthoDBi538441at2759

Enzyme and pathway databases

UniPathwayiUPA00670
BioCyciMetaCyc:CHRECP003-MONOMER

Family and domain databases

Gene3Di1.10.8.550, 1 hit
HAMAPiMF_00353, ChlB_BchB, 1 hit
InterProiView protein in InterPro
IPR000510, Nase/OxRdtase_comp1
IPR013580, P-CP/CP_red_C
IPR042298, P-CP_red_C
IPR005969, Protochl_reductB
PfamiView protein in Pfam
PF00148, Oxidored_nitro, 3 hits
PF08369, PCP_red, 1 hit

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiCHLB_CHLRE
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P36437
Secondary accession number(s): B7U1E6
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: June 1, 1994
Last sequence update: July 11, 2003
Last modified: June 2, 2021
This is version 113 of the entry and version 2 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families
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