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Q9SSU8 (PSY_DAUCA) Reviewed, UniProtKB/Swiss-Prot

Last modified February 19, 2014. Version 61. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Phytoene synthase, chloroplastic

EC=2.5.1.32
Gene names
Name:PSY
OrganismDaucus carota (Carrot)
Taxonomic identifier4039 [NCBI]
Taxonomic lineageEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeasteridscampanulidsApialesApiaceaeApioideaeScandiceaeDaucinaeDaucus

Protein attributes

Sequence length398 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at transcript level

General annotation (Comments)

Function

Catalyzes the reaction from prephytoene diphosphate to phytoene.

Catalytic activity

2 geranylgeranyl diphosphate = 15-cis-phytoene + 2 diphosphate.

Pathway

Carotenoid biosynthesis; phytoene biosynthesis; all-trans-phytoene from geranylgeranyl diphosphate: step 1/1.

Subunit structure

Monomer By similarity.

Subcellular location

Plastidchloroplast.

Sequence similarities

Belongs to the phytoene/squalene synthase family.

Ontologies

Keywords
   Biological processCarotenoid biosynthesis
Isoprene biosynthesis
   Cellular componentChloroplast
Plastid
   DomainTransit peptide
   Molecular functionTransferase
   Technical termMultifunctional enzyme
Gene Ontology (GO)
   Biological_processcarotenoid biosynthetic process

Inferred from electronic annotation. Source: UniProtKB-KW

   Cellular_componentchloroplast

Inferred from electronic annotation. Source: UniProtKB-SubCell

   Molecular_functiongeranylgeranyl-diphosphate geranylgeranyltransferase activity

Inferred from electronic annotation. Source: UniProtKB-EC

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Transit peptide1 – ?Chloroplast Potential
Chain? – 398Phytoene synthase, chloroplasticPRO_0000029855

Sequences

Sequence LengthMass (Da)Tools
Q9SSU8 [UniParc].

Last modified May 1, 2000. Version 1.
Checksum: 1D1E043824730615

FASTA39845,200
        10         20         30         40         50         60 
MACNFAVRVI YYPKEIHGVS VLNTNRSRKS RFSCRVMKLS TGVSAVAANP VRTSEERVYE 

        70         80         90        100        110        120 
VVLKQAALVR EEKRSSRGLC LDTKRTGSKS FDKSENDDAG MKSWNLLNEA YDRCGEVCAE 

       130        140        150        160        170        180 
YAKTFYLGTL LMTPERRRAV WAIYVWCRRT DELVDGPNAS HITPKALDRW EKRLNDLFDG 

       190        200        210        220        230        240 
QPYDMYDAAL ADTVSTYPVD IQPFKDMIDG MRMDLKKSRY QTFDELYLYC YYVAGTVGLM 

       250        260        270        280        290        300 
SVPVMGIAPE SKATTESVYS AALALGIANQ LTNILRDVGE DARRGRIYLP QEELKLAGIT 

       310        320        330        340        350        360 
PEYIFKGKVT DKWRSFMKGQ IKRARMFFDE AEKGVAELSS ASRWPVWASL LLYKQILDAI 

       370        380        390 
EANDYDNFTK RAYVGKAKKL VSLPLAYSRA LFAPSTVR 

« Hide

References

[1]"Daucus carota phytoene synthase."
Uno T., Sankawa U.
Submitted (SEP-1999) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [MRNA].
Tissue: Root.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
AB032797 mRNA. Translation: BAA84763.1.

3D structure databases

ProteinModelPortalQ9SSU8.
ModBaseSearch...
MobiDBSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Enzyme and pathway databases

UniPathwayUPA00799; UER00773.

Family and domain databases

Gene3D1.10.600.10. 1 hit.
InterProIPR002060. Squ/phyt_synthse.
IPR019845. Squalene/phytoene_synthase_CS.
IPR008949. Terpenoid_synth.
[Graphical view]
PfamPF00494. SQS_PSY. 1 hit.
[Graphical view]
SUPFAMSSF48576. SSF48576. 1 hit.
PROSITEPS01044. SQUALEN_PHYTOEN_SYN_1. 1 hit.
PS01045. SQUALEN_PHYTOEN_SYN_2. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry namePSY_DAUCA
AccessionPrimary (citable) accession number: Q9SSU8
Entry history
Integrated into UniProtKB/Swiss-Prot: December 1, 2000
Last sequence update: May 1, 2000
Last modified: February 19, 2014
This is version 61 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

PATHWAY comments

Index of metabolic and biosynthesis pathways