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Entry version 123 (02 Jun 2021)
Sequence version 1 (01 Jun 2002)
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Protein

Sulfoquinovosyl transferase SQD2

Gene

SQD2

Organism
Arabidopsis thaliana (Mouse-ear cress)
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

Catalyzes the transfer of the sulfoquinovose moiety from UDP-sulfoquinovose to diacylglycerol during sulfolipid biosynthesis. Sulfolipid contributes to maintaining a negatively charged lipid-water interface, a requirement for proper function of photosynthetic membranes. Sulfolipid may also function as a substitute of anionic phospholipids under phosphate-limited growth conditions.

1 Publication

<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: Glycolipid biosynthesis

This protein is involved in Glycolipid biosynthesis.1 Publication
View all proteins of this organism that are known to be involved in Glycolipid biosynthesis.

<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

  • cellular response to phosphate starvation Source: UniProtKB
  • glycolipid biosynthetic process Source: TAIR
  • sulfolipid biosynthetic process Source: UniProtKB

<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 functionGlycosyltransferase, Transferase
Biological processLipid biosynthesis, Lipid metabolism

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
MetaCyc:MONOMER-1202

Protein family/group databases

Carbohydrate-Active enZymes

More...
CAZyi
GT4, Glycosyltransferase Family 4

<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:
Sulfoquinovosyl transferase SQD21 Publication (EC:2.4.1.-1 Publication)
Alternative name(s):
Protein SULFOQUINOVOSYLDIACYLGLYCEROL 21 Publication
Sulfolipid synthase SQD21 Publication
UDP-sulfoquinovose: diacylglycerol alpha-sulfoquinovosyltransferase SQD2Curated
<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:SQD21 Publication
Ordered Locus Names:At5g01220Imported
ORF Names:F7J8.200Imported
<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>OrganismiArabidopsis thaliana (Mouse-ear cress)
<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 identifieri3702 [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 lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliopsidaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
<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
  • UP000006548 <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 5

Organism-specific databases

Arabidopsis Information Portal

More...
Araporti
AT5G01220

The Arabidopsis Information Resource

More...
TAIRi
locus:2150059, AT5G01220

<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

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular%5Flocation%5Fsection">'Subcellular location'</a> section describes the extent of a membrane-spanning region of the protein. It denotes the presence of both alpha-helical transmembrane regions and the membrane spanning regions of beta-barrel transmembrane proteins.<p><a href='/help/transmem' target='_top'>More...</a></p>Transmembranei198 – 218HelicalSequence analysisAdd BLAST21

Keywords - Cellular componenti

Chloroplast, Membrane, Plastid

<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

Lack of sulfolipid leading to reduced growth under phosphate-limited growth conditions.1 Publication

<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 transit peptide.<p><a href='/help/transit' target='_top'>More...</a></p>Transit peptidei1 – 83ChloroplastSequence analysisAdd BLAST83
<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_000043245784 – 510Sulfoquinovosyl transferase SQD2Sequence analysisAdd BLAST427

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 residuei88PhosphoserineCombined sources1

Keywords - PTMi

Phosphoprotein

Proteomic databases

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

More...
PaxDbi
Q8S4F6

PRoteomics IDEntifications database

More...
PRIDEi
Q8S4F6

Protein Mass spectra EXtraction

More...
ProMEXi
Q8S4F6

ProteomicsDB: a multi-organism proteome resource

More...
ProteomicsDBi
226855

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
Q8S4F6

<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

By phosphate depletion.1 Publication

Gene expression databases

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
Q8S4F6, baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
Q8S4F6, AT

<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

STRING: functional protein association networks

More...
STRINGi
3702.AT5G01220.1

<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
Q8S4F6

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

<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

Keywords - Domaini

Transit peptide, Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG1111, Eukaryota

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_009583_20_0_1

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q8S4F6

Identification of Orthologs from Complete Genome Data

More...
OMAi
DAYHAMD

Database of Orthologous Groups

More...
OrthoDBi
482876at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q8S4F6

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR001296, Glyco_trans_1
IPR028098, Glyco_trans_4-like_N

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF13439, Glyco_transf_4, 1 hit
PF00534, Glycos_transf_1, 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>Sequence (1+)i

<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.

<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 in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

This entry has 1 described isoform and 1 potential isoform that is computationally mapped.Show allAlign All

Q8S4F6-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MTTLSSINLS IPPHLLPSTT NTCSSSSATS CSPPRSSSFV LHSPLSFGHR
60 70 80 90 100
RLPISKKSKL RFCGVITKEA VSGSNDMTIT QVREDDESEI DAPLLDPESL
110 120 130 140 150
SKPRRIALFV EPSPFAYVSG YKNRFQNFIR YLREMGDEVI VVTTHEGVPE
160 170 180 190 200
EFYGARVIGS RSFPCPYYQK VPLSLALSPR IISEIARFKP DIIHASSPGV
210 220 230 240 250
MVFGALAIAK MLSVPIVMSY HTHVPVYIPR YTFSWLVKPM WSIIRFLHRA
260 270 280 290 300
ADLTLVPSAA IGKDLIAAGA TAANQLRLWN KGVDSESFNP RFRSQEMRIR
310 320 330 340 350
LSNGEPEKPL VIHVGRIGVE KSLELLKSVM DKLPEARIAF IGDGPYKEDL
360 370 380 390 400
EKLFTGMPAV FTGTLQGDEL SQAYASGDVF VMPSESETLG LVVLEAMSSG
410 420 430 440 450
LPVVAARAGG IPDIIPEDQE GKTGFLFNPG DVEDCVTKLR TLLHDRETRE
460 470 480 490 500
IIGKAAREET EKYDWRAATT KIRNEQYSAA IWFWRKKKVH VLGPINWLIK
510
RLFPVPEGNV
Length:510
Mass (Da):56,630
Last modified:June 1, 2002 - 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:i20E57D318D6BED68
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There is 1 potential isoform mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
A0A1P8BCW3A0A1P8BCW3_ARATH
Sulfoquinovosyldiacylglycerol 2
SQD2 SULFOLIPID SYNTHASE, At5g01220, F7J8.200, F7J8_200
433Annotation score:

Annotation score:1 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>

<p>This subsection of the 'Sequence' section reports difference(s) between the protein sequence shown in the UniProtKB entry and other available protein sequences derived from the same gene.<p><a href='/help/sequence_caution' target='_top'>More...</a></p>Sequence cautioni

The sequence CAB69850 differs from that shown. Reason: Erroneous gene model prediction.Curated

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
AF454354 mRNA Translation: AAM18913.1
KJ138712 mRNA Translation: AHL38652.1
AL137189 Genomic DNA Translation: CAB69850.1 Sequence problems.
CP002688 Genomic DNA Translation: AED90311.1
AY045961 mRNA Translation: AAK76635.1
BT005796 mRNA Translation: AAO64198.1

Protein sequence database of the Protein Information Resource

More...
PIRi
T45962

NCBI Reference Sequences

More...
RefSeqi
NP_568085.2, NM_120200.4

Genome annotation databases

Ensembl plant genome annotation project

More...
EnsemblPlantsi
AT5G01220.1; AT5G01220.1; AT5G01220

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
831888

Gramene; a comparative resource for plants

More...
Gramenei
AT5G01220.1; AT5G01220.1; AT5G01220

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ath:AT5G01220

<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
AF454354 mRNA Translation: AAM18913.1
KJ138712 mRNA Translation: AHL38652.1
AL137189 Genomic DNA Translation: CAB69850.1 Sequence problems.
CP002688 Genomic DNA Translation: AED90311.1
AY045961 mRNA Translation: AAK76635.1
BT005796 mRNA Translation: AAO64198.1
PIRiT45962
RefSeqiNP_568085.2, NM_120200.4

3D structure databases

SMRiQ8S4F6
ModBaseiSearch...

Protein-protein interaction databases

STRINGi3702.AT5G01220.1

Protein family/group databases

CAZyiGT4, Glycosyltransferase Family 4

PTM databases

iPTMnetiQ8S4F6

Proteomic databases

PaxDbiQ8S4F6
PRIDEiQ8S4F6
ProMEXiQ8S4F6
ProteomicsDBi226855

Genome annotation databases

EnsemblPlantsiAT5G01220.1; AT5G01220.1; AT5G01220
GeneIDi831888
GrameneiAT5G01220.1; AT5G01220.1; AT5G01220
KEGGiath:AT5G01220

Organism-specific databases

AraportiAT5G01220
TAIRilocus:2150059, AT5G01220

Phylogenomic databases

eggNOGiKOG1111, Eukaryota
HOGENOMiCLU_009583_20_0_1
InParanoidiQ8S4F6
OMAiDAYHAMD
OrthoDBi482876at2759
PhylomeDBiQ8S4F6

Enzyme and pathway databases

BioCyciMetaCyc:MONOMER-1202

Miscellaneous databases

Protein Ontology

More...
PROi
PR:Q8S4F6

Gene expression databases

ExpressionAtlasiQ8S4F6, baseline and differential
GenevisibleiQ8S4F6, AT

Family and domain databases

InterProiView protein in InterPro
IPR001296, Glyco_trans_1
IPR028098, Glyco_trans_4-like_N
PfamiView protein in Pfam
PF13439, Glyco_transf_4, 1 hit
PF00534, Glycos_transf_1, 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 nameiSQD2_ARATH
<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: Q8S4F6
Secondary accession number(s): Q941K9, Q9LFB4
<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: April 1, 2015
Last sequence update: June 1, 2002
Last modified: June 2, 2021
This is version 123 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 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. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
  2. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  3. SIMILARITY comments
    Index of protein domains and families
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