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Entry version 133 (16 Oct 2019)
Sequence version 1 (01 Nov 1996)
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Protein

RNA helicase CrhR

Gene

crhR

Organism
Synechocystis sp. (strain PCC 6803 / Kazusa)
Status
Reviewed-Annotation score:

Annotation score:5 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>
-Experimental evidence at protein leveli <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

An ATP-dependent bidirectional RNA helicase with RNA-dependent ATPase activity; does not unwind dsDNA, uses only (d)ATP (PubMed:15542859). Also has ATP-dependent RNA annealing activity; concurrent annealing and helicase activity promote strand-exchange activity (PubMed:15542859). In vitro has low helicase processivity, annealing processivity is probably higher (PubMed:15542859). Required for correct cold adaptation, probably by aiding translation of mRNAs required for photosynthesis and electron transport (PubMed:22575444). Probably regulates the cold-shock-inducible expression of the GroESL chaperones (PubMed:19926653). May partially regulate its own expression at both the transcriptional and post-transcriptional level (experiments used a construct expressing a 25 kDa trunacted protein which might have dominant-negative effects); is probably not directly involved in the pathway responsible for mRNA degradation (PubMed:23119089).1 Publication3 Publications

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 <a href="http://www.uniprot.org/help/function_section">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

Helicase inhibited by the slowly-hydrolyzing ATP analog ATP-gamma-S (PubMed:15542859). Protein is rapidly degraded upon shifting from 20 to 30 degrees Celsius, the degradation machinery is only transiently present in cells grown at 30 degrees Celsius, is inhibited by commercial protease inhibitors and requires full-length protein expression (the N-terminal fragment does not induce proteolysis although it can be degraded by widl-type extract) (PubMed:24509313).2 Publications

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.<p><a href='/help/np_bind' target='_top'>More...</a></p>Nucleotide bindingi51 – 58ATPPROSITE-ProRule annotation8

<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 functionHelicase, Hydrolase
Biological processStress response
LigandATP-binding, Nucleotide-binding

<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_and_taxonomy_section">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:
RNA helicase CrhR1 Publication (EC:3.6.4.131 Publication)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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:crhR1 Publication
Synonyms:deaD1 Publication
Ordered Locus Names:slr0083
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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>OrganismiSynechocystis sp. (strain PCC 6803 / Kazusa)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 identifieri1111708 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 lineageiBacteriaCyanobacteriaSynechococcalesMerismopediaceaeSynechocystis
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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
  • UP000001425 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">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: Chromosome

<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

GO - Cellular componenti

Keywords - Cellular componenti

Cytoplasm

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

<p>This subsection of the ‘Pathology and Biotech’ section describes the in vivo effects caused by ablation of the gene (or one or more transcripts) coding for the protein described in the entry. This includes gene knockout and knockdown, provided experiments have been performed in the context of a whole organism or a specific tissue, and not at the single-cell level.<p><a href='/help/disruption_phenotype' target='_top'>More...</a></p>Disruption phenotypei

Probably a complete knockout; no growth phenotype or large transcript changes at 34 degrees Celsius; at 24 degrees Celsius growth is considerably slower, while expression of a few genes is decreased (groES, groEL1, groEL2 and sll1611) or increased (pyrB, sll1911, sll1515 and slr0082) (at 70 µmol/photon/m2/s, 1% CO2) (PubMed:19926653). At 24 degrees reduced chlorophyll and phycocyanin content and a gradual reduction in photosynthetic O2 evolution; cells are locked in state 1 and unable to undergo state transitions, the plastoquinone pool is oxidized, leading to down-regulation of psaA and psaB transcripts and thus decreased PSI levels (PubMed:22575444). A partial knockout allowing expression of the first 224 residues as a 25 kDa truncated protein at 30 degrees Celsius has reduced growth, 20% reduced O2 evolution and 10% reduced electron transport, at 20 degrees Celsius has similar, more severe effects; no growth with rapid loss of viability, little to no photosynthetic O2 evolution, 50% reduced electron transport, decreased pigment content, smaller cell size and considerable intracellular disorganization (at 30 µmol/photon/m2/s, sterile air) (PubMed:22368073). The latter mutant is able to concentrate inorganic carbon but cannot use it to fix CO2 (PubMed:22368073). The truncated protein is constitutively expressed at 30 and 20 degrees Celsius and is no longer subject to normal regulation i.e. has lost cold-shock induction and dark-induced repression (PubMed:23119089).5 Publications

<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.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00004347851 – 492RNA helicase CrhRAdd BLAST492

Proteomic databases

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

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PaxDbi
Q55804

PRoteomics IDEntifications database

More...
PRIDEi
Q55804

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the ‘Expression’ section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

Constitutively expressed; higher levels are found in light-grown cells and lower levels in dark cells unless grown in glucose (at protein level) (PubMed:11027719, PubMed:23119089). Transcript level is regulated by the redox state of the plastoquinone pool; transcript accumulates when electrons flow between PSII and cytochrome b6-f complex (reduction of the electron transport chain) (PubMed:11027719). LexA-like repressor probably represses its expression at least in part (PubMed:16840531). Induced by cold with maximal RNA induction at 15 degrees Celsius and maximal protein induction at 15-20 degrees Celsius (at protein level) (PubMed:23119089).4 Publications

<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

Protein-protein interaction databases

Database of interacting proteins

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DIPi
DIP-48812N

Protein interaction database and analysis system

More...
IntActi
Q55804, 4 interactors

STRING: functional protein association networks

More...
STRINGi
1148.1001719

<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

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
Q55804

Database of comparative protein structure models

More...
ModBasei
Search...

<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

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini38 – 207Helicase ATP-bindingPROSITE-ProRule annotationAdd BLAST170
Domaini234 – 379Helicase C-terminalPROSITE-ProRule annotationAdd BLAST146

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi7 – 35Q motifPROSITE-ProRule annotationAdd BLAST29
Motifi155 – 158DEAD boxPROSITE-ProRule annotation4

<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 DEAD box helicase family.UniRule annotationCurated

Phylogenomic databases

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000268810

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q55804

KEGG Orthology (KO)

More...
KOi
K05592

Identification of Orthologs from Complete Genome Data

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OMAi
RNPIRIL

Database for complete collections of gene phylogenies

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PhylomeDBi
Q55804

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR011545 DEAD/DEAH_box_helicase_dom
IPR014001 Helicase_ATP-bd
IPR001650 Helicase_C
IPR027417 P-loop_NTPase
IPR000629 RNA-helicase_DEAD-box_CS
IPR014014 RNA_helicase_DEAD_Q_motif

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00270 DEAD, 1 hit
PF00271 Helicase_C, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00487 DEXDc, 1 hit
SM00490 HELICc, 1 hit

Superfamily database of structural and functional annotation

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SUPFAMi
SSF52540 SSF52540, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00039 DEAD_ATP_HELICASE, 1 hit
PS51192 HELICASE_ATP_BIND_1, 1 hit
PS51194 HELICASE_CTER, 1 hit
PS51195 Q_MOTIF, 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_length">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_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">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.

Q55804-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MTNTLTSTFA DLGLSEKRCQ LLADIGFEAP TQIQTEAIPL LLSGRDMLAQ
60 70 80 90 100
SQTGTGKTAA FALPLMDRID PEGDLQALIL TPTRELAQQV AEAMKDFSHE
110 120 130 140 150
RRLFILNVYG GQSIERQIRS LERGVQIVVG TPGRVIDLID RKKLKLETIQ
160 170 180 190 200
WVVLDEADEM LSMGFIDDVK TILRKTPPTR QTACFSATMP REIKELVNQF
210 220 230 240 250
LNDPALVTVK QTQSTPTRIE QQLYHVPRGW SKAKALQPIL EMEDPESAII
260 270 280 290 300
FVRTKQTAAD LTSRLQEAGH SVDEYHGNLS QSQRERLVHR FRDGKIKLVV
310 320 330 340 350
ATDIAARGLD VNNLSHVVNF DLPDNAETYI HRIGRTGRAG KTGKAIALVE
360 370 380 390 400
PIDRRLLRSI ENRLKQQIEV CTIPNRSQVE AKRIEKLQEQ LKEALTGERM
410 420 430 440 450
ASFLPLVREL SDEYDAQAIA AAALQMIYDQ SCPHWMKSDW EVPEVDFNKP
460 470 480 490
VLRRGRNAGG GQNKSGGGYQ GKPGKPRRSS GGRRPAYSDR QQ
Length:492
Mass (Da):55,120
Last modified:November 1, 1996 - v1
<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:i7D2801E515DB444B
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
BA000022 Genomic DNA Translation: BAA10556.1

Protein sequence database of the Protein Information Resource

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PIRi
S76612

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
BAA10556; BAA10556; BAA10556

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
syn:slr0083

<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
BA000022 Genomic DNA Translation: BAA10556.1
PIRiS76612

3D structure databases

SMRiQ55804
ModBaseiSearch...

Protein-protein interaction databases

DIPiDIP-48812N
IntActiQ55804, 4 interactors
STRINGi1148.1001719

Proteomic databases

PaxDbiQ55804
PRIDEiQ55804

Genome annotation databases

EnsemblBacteriaiBAA10556; BAA10556; BAA10556
KEGGisyn:slr0083

Phylogenomic databases

HOGENOMiHOG000268810
InParanoidiQ55804
KOiK05592
OMAiRNPIRIL
PhylomeDBiQ55804

Family and domain databases

InterProiView protein in InterPro
IPR011545 DEAD/DEAH_box_helicase_dom
IPR014001 Helicase_ATP-bd
IPR001650 Helicase_C
IPR027417 P-loop_NTPase
IPR000629 RNA-helicase_DEAD-box_CS
IPR014014 RNA_helicase_DEAD_Q_motif
PfamiView protein in Pfam
PF00270 DEAD, 1 hit
PF00271 Helicase_C, 1 hit
SMARTiView protein in SMART
SM00487 DEXDc, 1 hit
SM00490 HELICc, 1 hit
SUPFAMiSSF52540 SSF52540, 1 hit
PROSITEiView protein in PROSITE
PS00039 DEAD_ATP_HELICASE, 1 hit
PS51192 HELICASE_ATP_BIND_1, 1 hit
PS51194 HELICASE_CTER, 1 hit
PS51195 Q_MOTIF, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

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 nameiCRHR_SYNY3
<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: Q55804
<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_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 11, 2015
Last sequence update: November 1, 1996
Last modified: October 16, 2019
This is version 133 of the entry and version 1 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 programProkaryotic 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

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Synechocystis PCC 6803
    Synechocystis (strain PCC 6803): entries and gene names
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