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Entry version 88 (12 Aug 2020)
Sequence version 1 (15 Mar 2005)
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Protein

Global nitrogen regulator

Gene

ntcA

Organism
Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576)
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>
-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

Required for full expression of proteins subject to ammonium repression. Transcriptional activator of genes subject to nitrogen control.
Has affinity for the xisA upstream region. Binds to a 66 bp region containing three repeats of the consensus recognition sequence 5'-ACATT-3'.

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section specifies the position and type of each DNA-binding domain present within the protein.<p><a href='/help/dna_bind' target='_top'>More...</a></p>DNA bindingi176 – 195H-T-H motifPROSITE-ProRule annotationAdd BLAST20

<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

<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 functionActivator, DNA-binding
Biological processTranscription, Transcription regulation

<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:
Global nitrogen regulator
Alternative name(s):
DNA-binding protein VF1
Nitrogen-responsive regulatory protein
<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:ntcA
Synonyms:bifA
Ordered Locus Names:alr4392
<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>OrganismiNostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576)
<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 identifieri103690 [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 lineageiBacteriaCyanobacteriaNostocalesNostocaceaeNostoc
<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
  • UP000002483 <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: Chromosome

<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_00001001841 – 223Global nitrogen regulatorAdd BLAST223

<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

Gene expression databases

CollecTF database of bacterial transcription factor binding sites

More...
CollecTFi
EXPREG_00000760

<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-59350N

STRING: functional protein association networks

More...
STRINGi
103690.17133528

<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

Secondary structure

1223
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

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

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SMRi
P0A4U6

Database of comparative protein structure models

More...
ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

More...
PDBe-KBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
P0A4U6

<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%5Fand%5Fdomains%5Fsection">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>Domaini143 – 216HTH crp-typePROSITE-ProRule annotationAdd BLAST74

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
COG0664, Bacteria

KEGG Orthology (KO)

More...
KOi
K21561

Identification of Orthologs from Complete Genome Data

More...
OMAi
AKTECEV

Database of Orthologous Groups

More...
OrthoDBi
1596937at2

Family and domain databases

Conserved Domains Database

More...
CDDi
cd00038, CAP_ED, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.10.10, 1 hit
2.60.120.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR018490, cNMP-bd-like
IPR000595, cNMP-bd_dom
IPR012318, HTH_CRP
IPR014710, RmlC-like_jellyroll
IPR018335, Tscrpt_reg_HTH_Crp-type_CS
IPR022299, Tscrpt_reg_NtcA
IPR036388, WH-like_DNA-bd_sf
IPR036390, WH_DNA-bd_sf

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00027, cNMP_binding, 1 hit
PF13545, HTH_Crp_2, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00034, HTHCRP

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00100, cNMP, 1 hit
SM00419, HTH_CRP, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF46785, SSF46785, 1 hit
SSF51206, SSF51206, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR03697, NtcA_cyano, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50042, CNMP_BINDING_3, 1 hit
PS00042, HTH_CRP_1, 1 hit
PS51063, HTH_CRP_2, 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.

P0A4U6-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MIVTQDKALA NVFRQMATGA FPPVVETFER NKTIFFPGDP AERVYFLLKG
60 70 80 90 100
AVKLSRVYEA GEEITVALLR ENSVFGVLSL LTGNKSDRFY HAVAFTPVEL
110 120 130 140 150
LSAPIEQVEQ ALKENPELSM LMLRGLSSRI LQTEMMIETL AHRDMGSRLV
160 170 180 190 200
SFLLILCRDF GVPCADGITI DLKLSHQAIA EAIGSTRVTV TRLLGDLREK
210 220
KMISIHKKKI TVHKPVTLSR QFT
Length:223
Mass (Da):24,918
Last modified:March 15, 2005 - 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:i07FCE891766E7021
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
L10036 Genomic DNA Translation: AAD04183.1
X71608 Genomic DNA Translation: CAA50608.1
BA000019 Genomic DNA Translation: BAB76091.1

Protein sequence database of the Protein Information Resource

More...
PIRi
AH2354
B48640

NCBI Reference Sequences

More...
RefSeqi
WP_010998529.1, NZ_RSCN01000051.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
BAB76091; BAB76091; BAB76091

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ana:alr4392

<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
L10036 Genomic DNA Translation: AAD04183.1
X71608 Genomic DNA Translation: CAA50608.1
BA000019 Genomic DNA Translation: BAB76091.1
PIRiAH2354
B48640
RefSeqiWP_010998529.1, NZ_RSCN01000051.1

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...
PDBei

Protein Data Bank RCSB

More...
RCSB PDBi

Protein Data Bank Japan

More...
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
3LA2X-ray2.60A/B1-223[»]
3LA3X-ray2.40A/B1-223[»]
3LA7X-ray1.90A/B1-223[»]
SMRiP0A4U6
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

DIPiDIP-59350N
STRINGi103690.17133528

Genome annotation databases

EnsemblBacteriaiBAB76091; BAB76091; BAB76091
KEGGiana:alr4392

Phylogenomic databases

eggNOGiCOG0664, Bacteria
KOiK21561
OMAiAKTECEV
OrthoDBi1596937at2

Miscellaneous databases

EvolutionaryTraceiP0A4U6

Gene expression databases

CollecTFiEXPREG_00000760

Family and domain databases

CDDicd00038, CAP_ED, 1 hit
Gene3Di1.10.10.10, 1 hit
2.60.120.10, 1 hit
InterProiView protein in InterPro
IPR018490, cNMP-bd-like
IPR000595, cNMP-bd_dom
IPR012318, HTH_CRP
IPR014710, RmlC-like_jellyroll
IPR018335, Tscrpt_reg_HTH_Crp-type_CS
IPR022299, Tscrpt_reg_NtcA
IPR036388, WH-like_DNA-bd_sf
IPR036390, WH_DNA-bd_sf
PfamiView protein in Pfam
PF00027, cNMP_binding, 1 hit
PF13545, HTH_Crp_2, 1 hit
PRINTSiPR00034, HTHCRP
SMARTiView protein in SMART
SM00100, cNMP, 1 hit
SM00419, HTH_CRP, 1 hit
SUPFAMiSSF46785, SSF46785, 1 hit
SSF51206, SSF51206, 1 hit
TIGRFAMsiTIGR03697, NtcA_cyano, 1 hit
PROSITEiView protein in PROSITE
PS50042, CNMP_BINDING_3, 1 hit
PS00042, HTH_CRP_1, 1 hit
PS51063, HTH_CRP_2, 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 nameiNTCA_NOSS1
<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: P0A4U6
Secondary accession number(s): Q05061
<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: March 15, 2005
Last sequence update: March 15, 2005
Last modified: August 12, 2020
This is version 88 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

3D-structure, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
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