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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-Experimental evidence at protein leveli

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

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.

GO - Molecular functioni

  • UDP-glycosyltransferase activity Source: TAIR

GO - Biological processi

  • cellular response to phosphate starvation Source: UniProtKB
  • glycolipid biosynthetic process Source: TAIR
  • sulfolipid biosynthetic process Source: UniProtKB
Complete GO annotation...

Keywords - Molecular functioni

Glycosyltransferase, Transferase

Keywords - Biological processi

Lipid biosynthesis, Lipid metabolism

Enzyme and pathway databases

BioCyciMetaCyc:MONOMER-1202.

Protein family/group databases

CAZyiGT4. Glycosyltransferase Family 4.

Names & Taxonomyi

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
Gene namesi
Name:SQD21 Publication
Ordered Locus Names:At5g01220Imported
ORF Names:F7J8.200Imported
OrganismiArabidopsis thaliana (Mouse-ear cress)
Taxonomic identifieri3702 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
Proteomesi
  • UP000006548 Componenti: Chromosome 5

Organism-specific databases

TAIRiAT5G01220.

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei198 – 218HelicalSequence analysisAdd BLAST21

GO - Cellular componenti

  • chloroplast Source: TAIR
  • chloroplast envelope Source: TAIR
  • chloroplast membrane Source: UniProtKB-SubCell
  • integral component of membrane Source: UniProtKB-KW
  • plastid Source: TAIR
Complete GO annotation...

Keywords - Cellular componenti

Chloroplast, Membrane, Plastid

Pathology & Biotechi

Disruption phenotypei

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

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transit peptidei1 – 83ChloroplastSequence analysisAdd BLAST83
ChainiPRO_000043245784 – 510Sulfoquinovosyl transferase SQD2Sequence analysisAdd BLAST427

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei88PhosphoserineCombined sources1

Keywords - PTMi

Phosphoprotein

Proteomic databases

PaxDbiQ8S4F6.
ProMEXiQ8S4F6.

PTM databases

iPTMnetiQ8S4F6.

Expressioni

Inductioni

By phosphate depletion.1 Publication

Gene expression databases

GenevisibleiQ8S4F6. AT.

Interactioni

Protein-protein interaction databases

STRINGi3702.AT5G01220.1.

Structurei

3D structure databases

ProteinModelPortaliQ8S4F6.
SMRiQ8S4F6.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Compositional biasi24 – 27Poly-SerSequence analysis4

Sequence similaritiesi

Keywords - Domaini

Transit peptide, Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiKOG1111. Eukaryota.
COG0438. LUCA.
HOGENOMiHOG000077285.
KOiK06119.
OMAiSFNPRFR.
OrthoDBiEOG093608Q9.
PhylomeDBiQ8S4F6.

Family and domain databases

InterProiIPR001296. Glyco_trans_1.
IPR028098. Glyco_trans_4-like_N.
[Graphical view]
PfamiPF13439. Glyco_transf_4. 1 hit.
PF00534. Glycos_transf_1. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

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
Checksum:i20E57D318D6BED68
GO

Sequence cautioni

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

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.
UniGeneiAt.47995.

Genome annotation databases

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

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.
UniGeneiAt.47995.

3D structure databases

ProteinModelPortaliQ8S4F6.
SMRiQ8S4F6.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi3702.AT5G01220.1.

Protein family/group databases

CAZyiGT4. Glycosyltransferase Family 4.

PTM databases

iPTMnetiQ8S4F6.

Proteomic databases

PaxDbiQ8S4F6.
ProMEXiQ8S4F6.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

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

Organism-specific databases

TAIRiAT5G01220.

Phylogenomic databases

eggNOGiKOG1111. Eukaryota.
COG0438. LUCA.
HOGENOMiHOG000077285.
KOiK06119.
OMAiSFNPRFR.
OrthoDBiEOG093608Q9.
PhylomeDBiQ8S4F6.

Enzyme and pathway databases

BioCyciMetaCyc:MONOMER-1202.

Miscellaneous databases

PROiQ8S4F6.

Gene expression databases

GenevisibleiQ8S4F6. AT.

Family and domain databases

InterProiIPR001296. Glyco_trans_1.
IPR028098. Glyco_trans_4-like_N.
[Graphical view]
PfamiPF13439. Glyco_transf_4. 1 hit.
PF00534. Glycos_transf_1. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiSQD2_ARATH
AccessioniPrimary (citable) accession number: Q8S4F6
Secondary accession number(s): Q941K9, Q9LFB4
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 1, 2015
Last sequence update: June 1, 2002
Last modified: November 30, 2016
This is version 101 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, 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

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.