Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

Phytoene synthase, chloroplastic

Gene

PSY

Organism
Daucus carota (Wild carrot)
Status
Reviewed-Annotation score: -Experimental evidence at transcript leveli

Functioni

Catalyzes the reaction from prephytoene diphosphate to phytoene.

Catalytic activityi

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

Pathwayi: phytoene biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes all-trans-phytoene from geranylgeranyl diphosphate.
Proteins known to be involved in this subpathway in this organism are:
  1. Phytoene synthase, chloroplastic (PSY)
This subpathway is part of the pathway phytoene biosynthesis, which is itself part of Carotenoid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes all-trans-phytoene from geranylgeranyl diphosphate, the pathway phytoene biosynthesis and in Carotenoid biosynthesis.

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionMultifunctional enzyme, Transferase
Biological processCarotenoid biosynthesis, Isoprene biosynthesis

Enzyme and pathway databases

UniPathwayiUPA00799; UER00773

Names & Taxonomyi

Protein namesi
Recommended name:
Phytoene synthase, chloroplastic (EC:2.5.1.32)
Gene namesi
Name:PSY
OrganismiDaucus carota (Wild carrot)
Taxonomic identifieri4039 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeasteridscampanulidsApialesApiaceaeApioideaeScandiceaeDaucinaeDaucusDaucus sect. Daucus

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Chloroplast Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertion Graphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Chloroplast, Plastid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_0000029855? – 398Phytoene synthase, chloroplastic
Transit peptidei1 – ?ChloroplastSequence analysis

Proteomic databases

PRIDEiQ9SSU8

Interactioni

Subunit structurei

Monomer.By similarity

Structurei

3D structure databases

ProteinModelPortaliQ9SSU8
SMRiQ9SSU8
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the phytoene/squalene synthase family.Curated

Keywords - Domaini

Transit peptide

Family and domain databases

CDDicd00683 Trans_IPPS_HH, 1 hit
Gene3Di1.10.600.10, 1 hit
InterProiView protein in InterPro
IPR008949 Isoprenoid_synthase_dom_sf
IPR002060 Squ/phyt_synthse
IPR019845 Squalene/phytoene_synthase_CS
IPR033904 Trans_IPPS_HH
PfamiView protein in Pfam
PF00494 SQS_PSY, 1 hit
SUPFAMiSSF48576 SSF48576, 1 hit
PROSITEiView protein in PROSITE
PS01044 SQUALEN_PHYTOEN_SYN_1, 1 hit
PS01045 SQUALEN_PHYTOEN_SYN_2, 1 hit

Sequencei

Sequence statusi: Complete.

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

Q9SSU8-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MACNFAVRVI YYPKEIHGVS VLNTNRSRKS RFSCRVMKLS TGVSAVAANP
60 70 80 90 100
VRTSEERVYE VVLKQAALVR EEKRSSRGLC LDTKRTGSKS FDKSENDDAG
110 120 130 140 150
MKSWNLLNEA YDRCGEVCAE YAKTFYLGTL LMTPERRRAV WAIYVWCRRT
160 170 180 190 200
DELVDGPNAS HITPKALDRW EKRLNDLFDG QPYDMYDAAL ADTVSTYPVD
210 220 230 240 250
IQPFKDMIDG MRMDLKKSRY QTFDELYLYC YYVAGTVGLM SVPVMGIAPE
260 270 280 290 300
SKATTESVYS AALALGIANQ LTNILRDVGE DARRGRIYLP QEELKLAGIT
310 320 330 340 350
PEYIFKGKVT DKWRSFMKGQ IKRARMFFDE AEKGVAELSS ASRWPVWASL
360 370 380 390
LLYKQILDAI EANDYDNFTK RAYVGKAKKL VSLPLAYSRA LFAPSTVR
Length:398
Mass (Da):45,200
Last modified:May 1, 2000 - v1
Checksum:i1D1E043824730615
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB032797 mRNA Translation: BAA84763.1

Similar proteinsi

Entry informationi

Entry nameiPSY_DAUCA
AccessioniPrimary (citable) accession number: Q9SSU8
Entry historyiIntegrated into UniProtKB/Swiss-Prot: December 1, 2000
Last sequence update: May 1, 2000
Last modified: May 23, 2018
This is version 71 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

Cookie policy

We would like to use anonymized google analytics cookies to gather statistics on how uniprot.org is used in aggregate. Learn more

UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health