P49085 (PSY_MAIZE) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Phytoene synthase, chloroplastic
EC=2.5.1.32

Gene names

Name:

Y1

Organism

Zea mays (Maize)

Taxonomic identifier

4577 [NCBI]

Taxonomic lineage

cellular organisms › Eukaryota › Viridiplantae › Streptophyta › Streptophytina › Embryophyta › Tracheophyta › Euphyllophyta › Spermatophyta › Magnoliophyta › Liliopsida › commelinids › Poales › Poaceae › PACMAD clade › Panicoideae › Andropogoneae › Zea

Protein attributes

Sequence length	410 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Inferred from homology

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	Plastid › chloroplast.
Sequence similarities	Belongs to the phytoene/squalene synthase family.

Ontologies

Keywords
Biological process	Carotenoid biosynthesis Isoprene biosynthesis
Cellular component	Chloroplast Plastid
Domain	Transit peptide
Molecular function	Transferase
Technical term	Multifunctional enzyme
Gene Ontology (GO)
Biological_process	carotenoid biosynthetic process Inferred from electronic annotation. Source: UniProtKB-KW
Cellular_component	chloroplast Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular_function	geranylgeranyl-diphosphate geranylgeranyltransferase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Transit peptide	1 – ?		Chloroplast Potential
	Chain	? – 410		Phytoene synthase, chloroplastic		PRO_0000029858
Natural variations
	Natural variant	344	1	N → T in allele B73.

Sequences

	Sequence		Length	Mass (Da)
	P49085 [UniParc]. Last modified February 1, 1996. Version 1. Checksum: 21070A33624EED79	FASTA	410	46,481
	10 20 30 40 50 60 MAIILVRAAS PGLSAADSIS HQGTLQCSTL LKTKRPAARR WMPCSLLGLH PWEAGRPSPA 70 80 90 100 110 120 VYSSLPVNPA GEAVVSSEQK VYDVVLKQAA LLKRQLRTPV LDARPQDMDM PRNGLKEAYD 130 140 150 160 170 180 RCGEICEEYA KTFYLGTMLM TEERRRAIWA IYVWCRRTDE LVDGPNANYI TPTALDRWEK 190 200 210 220 230 240 RLEDLFTGRP YDMLDAALSD TISRFPIDIQ PFRDMIEGMR SDLRKTRYNN FDELYMYCYY 250 260 270 280 290 300 VAGTVGLMSV PVMGIATESK ATTESVYSAA LALGIANQLT NILRDVGEDA RRGRIYLPQD 310 320 330 340 350 360 ELAQAGLSDE DIFKGVVTNR WRNFMKRQIK RARMFFEEAE RGVNELSQAS RWPVWASLLL 370 380 390 400 410 YRQILDEIEA NDYNNFTKRA YVGKGKKLLA LPVAYGKSLL LPCSLRNGQT

References

[1]	"The y1 gene of maize codes for phytoene synthase." Buckner B., Sanmiguel P., Janick-Buckner D., Bennetzen J.L. Genetics 143:479-488(1996) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	U32636 Genomic DNA. Translation: AAB60314.1.
PIR	S68307.
UniGene	Zm.94272.
3D structure databases
ProteinModelPortal	P49085.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Organism-specific databases
Gramene	P49085.
MaizeGDB	66643.
Phylogenomic databases
HOGENOM	HOG000220848.
Enzyme and pathway databases
UniPathway	UPA00799; UER00773.
Family and domain databases
Gene3D	1.10.600.10. 1 hit.
InterPro	IPR002060. Squ/phyt_synthse. IPR019845. Squalene/phytoene_synthase_CS. IPR008949. Terpenoid_synth. [Graphical view]
Pfam	PF00494. SQS_PSY. 1 hit. [Graphical view]
SUPFAM	SSF48576. Terpenoid_synth. 1 hit.
PROSITE	PS01044. SQUALEN_PHYTOEN_SYN_1. 1 hit. PS01045. SQUALEN_PHYTOEN_SYN_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

PSY_MAIZE

Accession

Primary (citable) accession number: P49085

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 1, 1996
Last sequence update:	February 1, 1996
Last modified:	April 3, 2013
This is version 67 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Plant Protein Annotation Program