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Protein

Phytoene synthase 2, chloroplastic

Gene

PSY2

Organism
Solanum lycopersicum (Tomato) (Lycopersicon esculentum)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at transcript leveli

Functioni

Catalyzes the reaction from prephytoene diphosphate to phytoene.

Catalytic activityi

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

Pathway:iphytoene 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 1, chloroplastic (PSY1), Phytoene synthase 2, chloroplastic (PSY2)
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

Complete GO annotation...

Keywords - Molecular functioni

Transferase

Keywords - Biological processi

Carotenoid biosynthesis, Isoprene biosynthesis

Enzyme and pathway databases

SABIO-RKP37273.
UniPathwayiUPA00799; UER00773.

Names & Taxonomyi

Protein namesi
Recommended name:
Phytoene synthase 2, chloroplastic (EC:2.5.1.32)
Gene namesi
Name:PSY2
OrganismiSolanum lycopersicum (Tomato) (Lycopersicon esculentum)
Taxonomic identifieri4081 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeasteridslamiidsSolanalesSolanaceaeSolanoideaeSolaneaeSolanumLycopersicon
ProteomesiUP000004994 Componenti: Unplaced

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Chloroplast, Plastid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transit peptidei‹1 – 25›25ChloroplastSequence AnalysisAdd
BLAST
Chaini26 – 310285Phytoene synthase 2, chloroplasticPRO_0000029857Add
BLAST

Expressioni

Developmental stagei

In mature leaves.

Interactioni

Subunit structurei

Monomer.By similarity

Protein-protein interaction databases

STRINGi4081.Solyc02g081330.2.1.

Structurei

3D structure databases

ProteinModelPortaliP37273.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the phytoene/squalene synthase family.Curated

Keywords - Domaini

Transit peptide

Phylogenomic databases

InParanoidiP37273.

Family and domain databases

Gene3Di1.10.600.10. 1 hit.
InterProiIPR008949. Isoprenoid_synthase_dom.
IPR002060. Squ/phyt_synthse.
IPR019845. Squalene/phytoene_synthase_CS.
[Graphical view]
PfamiPF00494. SQS_PSY. 1 hit.
[Graphical view]
SUPFAMiSSF48576. SSF48576. 1 hit.
PROSITEiPS01044. SQUALEN_PHYTOEN_SYN_1. 1 hit.
PS01045. SQUALEN_PHYTOEN_SYN_2. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Fragment.

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

P37273-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
DPDIVLPGNL GLLSEAYDRC GEVCAEYAKT FYLGTMLMTP DRRRAIWAIY
60 70 80 90 100
VWCRRTDELV DGPNASHITP QALDRWEARL EDIFNGRPFD MLDAALSDTV
110 120 130 140 150
SRFPVDIQPF RDMVEGMRMD LWKSRYNNFD ELYLYCYYVA GTVGLMSVPI
160 170 180 190 200
MGIAPESKAT TESVYNAALA LGIANQLTNI LRDVGEDARR GRVYLPQDEL
210 220 230 240 250
AQAGLSDEDI FAGKVTDKWR IFMKKQIQRA RKFFDEAEKG VTELSSASRW
260 270 280 290 300
PVLASLLLYR KILDEIEAND YNNFTRRAYV SKPKKLLTLP IAYARSLVPP
310
KSTSCPLAKT
Length:310
Mass (Da):35,224
Last modified:October 1, 1994 - v1
Checksum:i8EAF60FE1D9F4CF5
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Non-terminal residuei1 – 11

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
L23424 mRNA. Translation: AAA34187.1.
PIRiA49558.
UniGeneiLes.13763.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
L23424 mRNA. Translation: AAA34187.1.
PIRiA49558.
UniGeneiLes.13763.

3D structure databases

ProteinModelPortaliP37273.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi4081.Solyc02g081330.2.1.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

InParanoidiP37273.

Enzyme and pathway databases

UniPathwayiUPA00799; UER00773.
SABIO-RKP37273.

Family and domain databases

Gene3Di1.10.600.10. 1 hit.
InterProiIPR008949. Isoprenoid_synthase_dom.
IPR002060. Squ/phyt_synthse.
IPR019845. Squalene/phytoene_synthase_CS.
[Graphical view]
PfamiPF00494. SQS_PSY. 1 hit.
[Graphical view]
SUPFAMiSSF48576. SSF48576. 1 hit.
PROSITEiPS01044. SQUALEN_PHYTOEN_SYN_1. 1 hit.
PS01045. SQUALEN_PHYTOEN_SYN_2. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "cDNA cloning, expression during development, and genome mapping of PSY2, a second tomato gene encoding phytoene synthase."
    Bartley G.E., Scolnik P.A.
    J. Biol. Chem. 268:25718-25721(1993) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA].
    Tissue: Leaf.

Entry informationi

Entry nameiPSY2_SOLLC
AccessioniPrimary (citable) accession number: P37273
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 1, 1994
Last sequence update: October 1, 1994
Last modified: June 24, 2015
This is version 80 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, Multifunctional enzyme, Reference proteome

Documents

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

External Data

Dasty 3

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 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.