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Protein

Phytoene synthase, chloroplastic

Gene

PSY

Organism
Cucumis melo (Muskmelon)
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.

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 functionTransferase
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)
Alternative name(s):
MEL5
Gene namesi
Name:PSY
OrganismiCucumis melo (Muskmelon)
Taxonomic identifieri3656 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsfabidsCucurbitalesCucurbitaceaeBenincaseaeCucumis
Proteomesi
  • UP000089565 Componenti: Genome assembly

Subcellular locationi

GO - Cellular componenti

Keywords - Cellular componenti

Chloroplast, Plastid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transit peptidei1 – 83ChloroplastSequence analysisAdd BLAST83
ChainiPRO_000002985484 – 422Phytoene synthase, chloroplasticAdd BLAST339

Interactioni

Subunit structurei

Monomer.By similarity

Structurei

3D structure databases

ProteinModelPortaliP49293.
SMRiP49293.
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.
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.

P49293-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSLASSLVVS SNVELSPSSF GFLDSVRDGP QIPDSFRFSS RNRVPNLINK
60 70 80 90 100
KQKWGNHSHS TELKYPILHE SGYGSVIVAS MVANPAGEIA VSAEQKVYNV
110 120 130 140 150
VMKQAALVKR QLRTAGELDV KPDIVLPGTL SLLNEAYDRC GEVCAEYAKT
160 170 180 190 200
FYLGTMLMTP ERQKAIWAIY VWCRRTDELV DGPNASHITP TALDRWEARL
210 220 230 240 250
EELFQGRPFD MLDAALADTV TKFPVDIQPF KDMIEGMRMD LRKSRYKNFD
260 270 280 290 300
ELYLYCYYVA GTVGLMSVPV MGIAPESQAS TESVYNAALA LGIANQAPPN
310 320 330 340 350
ILRDVGEDAR RGRIYLPQDE LAQAGLSDED IFAGRVTDKW RNFMKNQIKR
360 370 380 390 400
ARMFFDEAEK GVLELNKASR WPVWASLLLY RQILDEIEAN DYDNFTKRAY
410 420
VSKAKKILAL PMAYGRALLG PS
Length:422
Mass (Da):47,392
Last modified:February 1, 1996 - v1
Checksum:i259124B3AD4642B0
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Z37543 mRNA. Translation: CAA85775.1.
PIRiS56668.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Z37543 mRNA. Translation: CAA85775.1.
PIRiS56668.

3D structure databases

ProteinModelPortaliP49293.
SMRiP49293.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Enzyme and pathway databases

UniPathwayiUPA00799; UER00773.

Family and domain databases

CDDicd00683. Trans_IPPS_HH. 1 hit.
Gene3Di1.10.600.10. 1 hit.
InterProiView protein in InterPro
IPR008949. Isoprenoid_synthase_dom.
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.
ProtoNetiSearch...

Entry informationi

Entry nameiPSY_CUCME
AccessioniPrimary (citable) accession number: P49293
Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 1, 1996
Last sequence update: February 1, 1996
Last modified: April 12, 2017
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

Keywords - Technical termi

Complete proteome, Multifunctional enzyme

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. 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.