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

4-aminobutyrate aminotransferase

Gene

UGA1

Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Required for the degradation of gamma-aminobutyric acid (GABA), which is important for utilization of GABA as nitrogen source and for oxidative stress tolerance. Deaminates GABA to succinate semialdehyde, which in turn is converted to succinate by the succinate-semialdehyde dehydrogenase UGA2. Cannot transaminate beta-alanine (BAL).3 Publications

Miscellaneous

Present with 573 molecules/cell in log phase SD medium.1 Publication

Catalytic activityi

4-aminobutanoate + 2-oxoglutarate = succinate semialdehyde + L-glutamate.

Cofactori

pyridoxal 5'-phosphate1 Publication

Kineticsi

  1. KM=3.2 mM for 4-aminobutanoate1 Publication
  2. KM=0.22 mM for 2-oxoglutarate1 Publication
  1. Vmax=12.8 µmol/min/mg enzyme1 Publication

pH dependencei

Optimum pH is 8.3.1 Publication

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei192SubstrateBy similarity1
Binding sitei351Pyridoxal phosphate; shared with dimeric partnerBy similarity1

GO - Molecular functioni

  • 4-aminobutyrate:2-oxoglutarate transaminase activity Source: UniProtKB-EC
  • 4-aminobutyrate transaminase activity Source: SGD
  • pyridoxal phosphate binding Source: InterPro

GO - Biological processi

  • gamma-aminobutyric acid catabolic process Source: SGD

Keywordsi

Molecular functionAminotransferase, Transferase
LigandPyridoxal phosphate

Enzyme and pathway databases

BioCyciMetaCyc:YGR019W-MONOMER
YEAST:YGR019W-MONOMER
BRENDAi2.6.1.19 984
ReactomeiR-SCE-916853 Degradation of GABA

Names & Taxonomyi

Protein namesi
Recommended name:
4-aminobutyrate aminotransferase (EC:2.6.1.19)
Alternative name(s):
GABA aminotransferase
Short name:
GABA-AT
Gamma-amino-N-butyrate transaminase
Short name:
GABA transaminase
Gene namesi
Name:UGA1
Ordered Locus Names:YGR019W
OrganismiSaccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)
Taxonomic identifieri559292 [NCBI]
Taxonomic lineageiEukaryotaFungiDikaryaAscomycotaSaccharomycotinaSaccharomycetesSaccharomycetalesSaccharomycetaceaeSaccharomyces
Proteomesi
  • UP000002311 Componenti: Chromosome VII

Organism-specific databases

EuPathDBiFungiDB:YGR019W
SGDiS000003251 UGA1

Subcellular locationi

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

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001203821 – 4714-aminobutyrate aminotransferaseAdd BLAST471

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei326N6-(pyridoxal phosphate)lysineBy similarity1

Proteomic databases

MaxQBiP17649
PaxDbiP17649
PRIDEiP17649

Expressioni

Inductioni

Subject to nitrogen catabolite repression. Expression is low in the presence of the preferred nitrogen sources, and up-regulated by GABA.1 Publication

Interactioni

Subunit structurei

Homodimer and homotetramer.1 Publication

Protein-protein interaction databases

BioGridi33261, 62 interactors
IntActiP17649, 8 interactors
STRINGi4932.YGR019W

Structurei

3D structure databases

ProteinModelPortaliP17649
SMRiP17649
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni135 – 136Pyridoxal phosphate bindingBy similarity2

Sequence similaritiesi

Phylogenomic databases

GeneTreeiENSGT00550000074885
HOGENOMiHOG000020208
InParanoidiP17649
KOiK13524
OMAiSSVPIXS
OrthoDBiEOG092C208V

Family and domain databases

CDDicd00610 OAT_like, 1 hit
Gene3Di3.40.640.10, 1 hit
3.90.1150.10, 2 hits
InterProiView protein in InterPro
IPR004631 4NH2But_aminotransferase_euk
IPR005814 Aminotrans_3
IPR015424 PyrdxlP-dep_Trfase
IPR015422 PyrdxlP-dep_Trfase_dom1
IPR015421 PyrdxlP-dep_Trfase_major
PfamiView protein in Pfam
PF00202 Aminotran_3, 1 hit
PIRSFiPIRSF000521 Transaminase_4ab_Lys_Orn, 1 hit
SUPFAMiSSF53383 SSF53383, 1 hit
TIGRFAMsiTIGR00699 GABAtrns_euk, 1 hit
PROSITEiView protein in PROSITE
PS00600 AA_TRANSFER_CLASS_3, 1 hit

Sequencei

Sequence statusi: Complete.

P17649-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSICEQYYPE EPTKPTVKTE SIPGPESQKQ LKELGEVFDT RPAYFLADYE
60 70 80 90 100
KSLGNYITDV DGNTYLDLYA QISSIALGYN NPALIKAAQS PEMIRALVDR
110 120 130 140 150
PALGNFPSKD LDKILKQILK SAPKGQDHVW SGLSGADANE LAFKAAFIYY
160 170 180 190 200
RAKQRGYDAD FSEKENLSVM DNDAPGAPHL AVLSFKRAFH GRLFASGSTT
210 220 230 240 250
CSKPIHKLDF PAFHWPHAEY PSYQYPLDEN SDANRKEDDH CLAIVEELIK
260 270 280 290 300
TWSIPVAALI IEPIQSEGGD NHASKYFLQK LRDITLKYNV VYIIDEVQTG
310 320 330 340 350
VGATGKLWCH EYADIQPPVD LVTFSKKFQS AGYFFHDPKF IPNKPYRQFN
360 370 380 390 400
TWCGEPARMI IAGAIGQEIS DKKLTEQCSR VGDYLFKKLE GLQKKYPENF
410 420 430 440 450
QNLRGKGRGT FIAWDLPTGE KRDLLLKKLK LNGCNVGGCA VHAVRLRPSL
460 470
TFEEKHADIF IEALAKSVNE L
Length:471
Mass (Da):52,946
Last modified:October 1, 1996 - v2
Checksum:i33D446778A891F63
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti240H → R in CAA36833 (PubMed:2190186).Curated1
Sequence conflicti240H → R in ABF58895 (PubMed:17355287).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X52600 Genomic DNA Translation: CAA36833.1
DQ512723 Genomic DNA Translation: ABF58895.1
Z72804 Genomic DNA Translation: CAA97002.1
AY692904 Genomic DNA Translation: AAT92923.1
BK006941 Genomic DNA Translation: DAA08115.1
PIRiS64310
RefSeqiNP_011533.3, NM_001181148.3

Genome annotation databases

EnsemblFungiiYGR019W; YGR019W; YGR019W
GeneIDi852902
KEGGisce:YGR019W

Similar proteinsi

Entry informationi

Entry nameiGABAT_YEAST
AccessioniPrimary (citable) accession number: P17649
Secondary accession number(s): A5H0J7, D6VUF4
Entry historyiIntegrated into UniProtKB/Swiss-Prot: August 1, 1990
Last sequence update: October 1, 1996
Last modified: March 28, 2018
This is version 165 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health