ID   PSY_NARPS               Reviewed;         423 AA.
AC   P53797;
DT   01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1996, sequence version 1.
DT   13-SEP-2023, entry version 85.
DE   RecName: Full=Phytoene synthase, chloroplastic;
DE            EC=2.5.1.32;
DE   Flags: Precursor;
GN   Name=PSY;
OS   Narcissus pseudonarcissus (Daffodil).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Liliopsida; Asparagales; Amaryllidaceae;
OC   Amaryllidoideae; Narcissus.
OX   NCBI_TaxID=39639;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Paracorolla;
RA   Schledz M., Beyer P.;
RT   "Nucleotide sequence of a Narcissus pseudonarcissus cDNA for phytoene
RT   synthase.";
RL   (er) Plant Gene Register PGR95-122(1995).
CC   -!- FUNCTION: Catalyzes the reaction from prephytoene diphosphate to
CC       phytoene.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 (2E,6E,10E)-geranylgeranyl diphosphate = 15-cis-phytoene + 2
CC         diphosphate; Xref=Rhea:RHEA:34475, ChEBI:CHEBI:27787,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:58756; EC=2.5.1.32;
CC   -!- PATHWAY: Carotenoid biosynthesis; phytoene biosynthesis; all-trans-
CC       phytoene from geranylgeranyl diphosphate: step 1/1.
CC   -!- SUBUNIT: Monomer. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast.
CC   -!- SIMILARITY: Belongs to the phytoene/squalene synthase family.
CC       {ECO:0000305}.
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DR   EMBL; X78814; CAA55391.1; -; mRNA.
DR   PIR; S54135; S54135.
DR   AlphaFoldDB; P53797; -.
DR   SMR; P53797; -.
DR   BioCyc; MetaCyc:MONOMER-18247; -.
DR   UniPathway; UPA00799; UER00773.
DR   GO; GO:0010287; C:plastoglobule; IEA:UniProt.
DR   GO; GO:0046905; F:15-cis-phytoene synthase activity; IEA:UniProt.
DR   GO; GO:0004311; F:farnesyltranstransferase activity; IEA:InterPro.
DR   GO; GO:0016767; F:geranylgeranyl-diphosphate geranylgeranyltransferase activity; IEA:UniProtKB-EC.
DR   GO; GO:0016117; P:carotenoid biosynthetic process; IEA:UniProtKB-KW.
DR   CDD; cd00683; Trans_IPPS_HH; 1.
DR   Gene3D; 1.10.600.10; Farnesyl Diphosphate Synthase; 1.
DR   InterPro; IPR008949; Isoprenoid_synthase_dom_sf.
DR   InterPro; IPR002060; Squ/phyt_synthse.
DR   InterPro; IPR019845; Squalene/phytoene_synthase_CS.
DR   InterPro; IPR044843; Trans_IPPS_bact-type.
DR   InterPro; IPR033904; Trans_IPPS_HH.
DR   PANTHER; PTHR31480; BIFUNCTIONAL LYCOPENE CYCLASE/PHYTOENE SYNTHASE; 1.
DR   PANTHER; PTHR31480:SF2; PHYTOENE SYNTHASE, CHLOROPLASTIC; 1.
DR   Pfam; PF00494; SQS_PSY; 1.
DR   SFLD; SFLDG01212; Phytoene_synthase_like; 1.
DR   SFLD; SFLDG01018; Squalene/Phytoene_Synthase_Lik; 1.
DR   SUPFAM; SSF48576; Terpenoid synthases; 1.
DR   PROSITE; PS01044; SQUALEN_PHYTOEN_SYN_1; 1.
DR   PROSITE; PS01045; SQUALEN_PHYTOEN_SYN_2; 1.
PE   2: Evidence at transcript level;
KW   Carotenoid biosynthesis; Chloroplast; Isoprene biosynthesis; Plastid;
KW   Transferase; Transit peptide.
FT   TRANSIT         1..136
FT                   /note="Chloroplast"
FT                   /evidence="ECO:0000255"
FT   CHAIN           137..423
FT                   /note="Phytoene synthase, chloroplastic"
FT                   /id="PRO_0000029859"
SQ   SEQUENCE   423 AA;  47806 MW;  8E76BA35312B73DF CRC64;
     MVVAILRVVS AIEIPIRLGF SEANWRFSSP KYDNLGRKKS RLSVYSLYTT SKYACVGFEA
     ENNGKFLIRS SLVANPAGEA TISSEQKVYD VVLKQAALVK DQTKSSRKST DVKPDIVLPG
     TVYLLKDAYD RCGEVCAEYA KTFYLGTLLM TPERRRAIWA IYVWCRRTDE LVDGHNASHI
     TPSALDRWEA RLEDLFAGRP YDMFDAALSD TVSRFPVDIQ PFMDMVEGMR MDLKKSRYKN
     FDELYLYCYY VAGTVGLMSV PVMGIAPESL AEAESVYNAA LALGIANQLT NILRDVGEDA
     RRGRIYLPQD ELAEAGLSDE DVFTGKVTDK WRSFMKRQIK RARTFFEQAE KGVTELSQAS
     RWPVWASLLL YRQILDEIEA NDYNNFTKRA YVSKVKRLAA LPLAYGKSLL IPLSLRPPSL
     SKA
//