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Entry version 164 (08 May 2019)
Sequence version 1 (01 Aug 1991)
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Protein

Transcriptional repressor OPI1

Gene

OPI1

Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)
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

Negative regulator of the transcriptional complex INO2-INO4 in response to phospholipid precursor availability. When precursors become limiting, OPI1 is retained at the endoplasmic reticulum (ER) and INO2-INO4 activates INO1 and other genes required for phospholipid biosynthesis, whereas abundant precursor availability results in targeting of OPI1 to the nucleus to repress transcription of these genes. Binds directly to phosphatidic acid, which is required for ER targeting and may act as sensing mechanism for precursor availability, as phosphatidic acid becomes rapidly depleted upon phospholipid biosynthesis.1 Publication

Miscellaneous

Present with 1281 molecules/cell in log phase SD medium.1 Publication

<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 functionDNA-binding, Repressor
Biological processLipid biosynthesis, Lipid metabolism, Phospholipid biosynthesis, Phospholipid metabolism, Transcription, Transcription regulation

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
YEAST:G3O-31040-MONOMER

<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:
Transcriptional repressor OPI1
Alternative name(s):
Negative regulator of phospholipid biosynthesis
Overproducer of inositol protein 1
<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:OPI1
Ordered Locus Names:YHL020C
<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>OrganismiSaccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)
<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 identifieri559292 [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 lineageiEukaryotaFungiDikaryaAscomycotaSaccharomycotinaSaccharomycetesSaccharomycetalesSaccharomycetaceaeSaccharomyces
<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
  • UP000002311 <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 VIII

Organism-specific databases

Eukaryotic Pathogen Database Resources

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EuPathDBi
FungiDB:YHL020C

Saccharomyces Genome Database

More...
SGDi
S000001012 OPI1

<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

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

Endoplasmic reticulum, Nucleus

<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_00000580611 – 404Transcriptional repressor OPI1Add BLAST404

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei10PhosphoserineCombined sources1

Keywords - PTMi

Phosphoprotein

Proteomic databases

MaxQB - The MaxQuant DataBase

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MaxQBi
P21957

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

More...
PaxDbi
P21957

PRoteomics IDEntifications database

More...
PRIDEi
P21957

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
P21957

<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_section">'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_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Interacts with SCS2.

2 Publications

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction_section%27">Interaction</a> section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="http://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated on a monthly basis. Each binary interaction is displayed on a separate line.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

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BioGridi
36403, 469 interactors

Database of interacting proteins

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DIPi
DIP-5505N

The Eukaryotic Linear Motif resource for Functional Sites in Proteins

More...
ELMi
P21957

Protein interaction database and analysis system

More...
IntActi
P21957, 8 interactors

STRING: functional protein association networks

More...
STRINGi
4932.YHL020C

<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

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SMRi
P21957

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

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>Regioni109 – 138Basic motifAdd BLAST30
Regioni139 – 160Leucine-zipperAdd BLAST22

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>Motifi200 – 206FFAT7

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes the position of regions of compositional bias within the protein and the particular amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi89 – 93Poly-Asp5
Compositional biasi193 – 198Poly-Asp6
Compositional biasi286 – 298Poly-GlnAdd BLAST13
Compositional biasi306 – 310Poly-Gln5
Compositional biasi377 – 381Poly-Gln5
Compositional biasi384 – 387Poly-Gln4

<p>This subsection of the ‘Family and domains’ section provides general information on the biological role of a domain. The term ‘domain’ is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

The FFAT motif is required for interaction with SCS2 and proper localization of the protein.1 Publication

Phylogenomic databases

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P21957

KEGG Orthology (KO)

More...
KOi
K21642

Identification of Orthologs from Complete Genome Data

More...
OMAi
EYKLNMS

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR013927 TF_Opi1

The PANTHER Classification System

More...
PANTHERi
PTHR38406 PTHR38406, 2 hits

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF08618 Opi1, 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.

P21957-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSENQRLGLS EEEVEAAEVL GVLKQSCRQK SQPSEDVSQA DKMPASESST
60 70 80 90 100
TPLNILDRVS NKIISNVVTF YDEINTNKRP LKSIGRLLDD DDDEHDDYDY
110 120 130 140 150
NDDEFFTNKR QKLSRAIAKG KDNLKEYKLN MSIESKKRLV TCLHLLKLAN
160 170 180 190 200
KQLSDKISCL QDLVEKEQVH PLHKQDGNAR TTTGAGEDET SSDEDDDDEE
210 220 230 240 250
FFDASEQVNA SEQSIVVKME VVGTVKKVYS LISKFTANSL PEPARSQVRE
260 270 280 290 300
SLLNLPTNWF DSVHSTSLPH HASFHYANCE EQKVEQQQQQ QQQQQQQQLL
310 320 330 340 350
QQQLLQQQQQ KRNKDGDDSA SPSSSVTANG KVLILAKESL EMVRNVMGVV
360 370 380 390 400
DSTLGKAEEW VKQKQEVKEM IRERFLQQQQ QYRQQQQKDG NYVKPSQDNV

DSKD
Length:404
Mass (Da):46,065
Last modified:August 1, 1991 - 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:i59E55D7BE7122EDA
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
M57383 Genomic DNA Translation: AAA34828.1
U11582 Genomic DNA Translation: AAB65073.1
AY558103 Genomic DNA Translation: AAS56429.1
BK006934 Genomic DNA Translation: DAA06665.1

Protein sequence database of the Protein Information Resource

More...
PIRi
S13741

NCBI Reference Sequences

More...
RefSeqi
NP_011843.1, NM_001179100.1

Genome annotation databases

Ensembl fungal genome annotation project

More...
EnsemblFungii
YHL020C_mRNA; YHL020C_mRNA; YHL020C

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
856366

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
sce:YHL020C

<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
M57383 Genomic DNA Translation: AAA34828.1
U11582 Genomic DNA Translation: AAB65073.1
AY558103 Genomic DNA Translation: AAS56429.1
BK006934 Genomic DNA Translation: DAA06665.1
PIRiS13741
RefSeqiNP_011843.1, NM_001179100.1

3D structure databases

SMRiP21957
ModBaseiSearch...

Protein-protein interaction databases

BioGridi36403, 469 interactors
DIPiDIP-5505N
ELMiP21957
IntActiP21957, 8 interactors
STRINGi4932.YHL020C

PTM databases

iPTMnetiP21957

Proteomic databases

MaxQBiP21957
PaxDbiP21957
PRIDEiP21957

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblFungiiYHL020C_mRNA; YHL020C_mRNA; YHL020C
GeneIDi856366
KEGGisce:YHL020C

Organism-specific databases

EuPathDBiFungiDB:YHL020C
SGDiS000001012 OPI1

Phylogenomic databases

InParanoidiP21957
KOiK21642
OMAiEYKLNMS

Enzyme and pathway databases

BioCyciYEAST:G3O-31040-MONOMER

Miscellaneous databases

Protein Ontology

More...
PROi
PR:P21957

Family and domain databases

InterProiView protein in InterPro
IPR013927 TF_Opi1
PANTHERiPTHR38406 PTHR38406, 2 hits
PfamiView protein in Pfam
PF08618 Opi1, 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 nameiOPI1_YEAST
<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: P21957
Secondary accession number(s): D3DKP9
<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: August 1, 1991
Last sequence update: August 1, 1991
Last modified: May 8, 2019
This is version 164 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 programFungal 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. Yeast
    Yeast (Saccharomyces cerevisiae): entries, gene names and cross-references to SGD
  2. Yeast chromosome VIII
    Yeast (Saccharomyces cerevisiae) chromosome VIII: entries and gene names
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