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Protein

Branched-chain-amino-acid aminotransferase 5, chloroplastic

Gene

BCAT5

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Converts 2-oxo acids to branched-chain amino acids. Acts on leucine, isoleucine and valine (By similarity).By similarity

Miscellaneous

Branched-chain amino acids are synthesized in chloroplasts, whereas the degradation takes place in mitochondria.

Catalytic activityi

L-leucine + 2-oxoglutarate = 4-methyl-2-oxopentanoate + L-glutamate.
L-isoleucine + 2-oxoglutarate = (S)-3-methyl-2-oxopentanoate + L-glutamate.
L-valine + 2-oxoglutarate = 3-methyl-2-oxobutanoate + L-glutamate.

Cofactori

Pathwayi: L-isoleucine biosynthesis

This protein is involved in step 4 of the subpathway that synthesizes L-isoleucine from 2-oxobutanoate.
Proteins known to be involved in the 4 steps of the subpathway in this organism are:
  1. Acetolactate synthase small subunit 1, chloroplastic (VAT1), Acetolactate synthase, chloroplastic (ALS), Acetolactate synthase small subunit 2, chloroplastic (At2g31810), Acetolactate synthase (AXX17_At3g42690)
  2. Ketol-acid reductoisomerase (AXX17_At3g53150), Ketol-acid reductoisomerase, chloroplastic (At3g58610), Ketol-acid reductoisomerase (At3g58610)
  3. Dihydroxy-acid dehydratase, chloroplastic (DHAD)
  4. Branched-chain-amino-acid aminotransferase 2, chloroplastic (BCAT2), Branched-chain-amino-acid aminotransferase 5, chloroplastic (BCAT5), Branched-chain-amino-acid aminotransferase 6 (BCAT6), Branched-chain-amino-acid aminotransferase 3, chloroplastic (BCAT3)
This subpathway is part of the pathway L-isoleucine biosynthesis, which is itself part of Amino-acid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes L-isoleucine from 2-oxobutanoate, the pathway L-isoleucine biosynthesis and in Amino-acid biosynthesis.

Pathwayi: L-leucine biosynthesis

This protein is involved in step 4 of the subpathway that synthesizes L-leucine from 3-methyl-2-oxobutanoate.
Proteins known to be involved in the 4 steps of the subpathway in this organism are:
  1. 2-isopropylmalate synthase 2, chloroplastic (IPMS2), 2-isopropylmalate synthase 1, chloroplastic (IPMS1)
  2. 3-isopropylmalate dehydratase small subunit 1 (IPMI2), 3-isopropylmalate dehydratase small subunit 2 (IPMI1), 3-isopropylmalate dehydratase small subunit 3 (At2g43090), 3-isopropylmalate dehydratase large subunit, chloroplastic (IIL1)
  3. 3-isopropylmalate dehydrogenase (At1g31180/F28K20_14), 3-isopropylmalate dehydrogenase (IMD1), 3-isopropylmalate dehydrogenase 3, chloroplastic (IMDH3), 3-isopropylmalate dehydrogenase 2, chloroplastic (IMDH2), 3-isopropylmalate dehydrogenase, 3-isopropylmalate dehydrogenase (AXX17_At1g31810), 3-isopropylmalate dehydrogenase (AXX17_At1g75410), 3-isopropylmalate dehydrogenase, 3-isopropylmalate dehydrogenase (AXX17_At5g13660), 3-isopropylmalate dehydrogenase (AXX17_At1g75410), 3-isopropylmalate dehydrogenase (IMD3), 3-isopropylmalate dehydrogenase, 3-isopropylmalate dehydrogenase 1, chloroplastic (IMDH1)
  4. Branched-chain-amino-acid aminotransferase 2, chloroplastic (BCAT2), Branched-chain-amino-acid aminotransferase 5, chloroplastic (BCAT5), Branched-chain-amino-acid aminotransferase 6 (BCAT6), Branched-chain-amino-acid aminotransferase 3, chloroplastic (BCAT3)
This subpathway is part of the pathway L-leucine biosynthesis, which is itself part of Amino-acid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes L-leucine from 3-methyl-2-oxobutanoate, the pathway L-leucine biosynthesis and in Amino-acid biosynthesis.

Pathwayi: L-valine biosynthesis

This protein is involved in step 4 of the subpathway that synthesizes L-valine from pyruvate.
Proteins known to be involved in the 4 steps of the subpathway in this organism are:
  1. Acetolactate synthase small subunit 1, chloroplastic (VAT1), Acetolactate synthase, chloroplastic (ALS), Acetolactate synthase small subunit 2, chloroplastic (At2g31810), Acetolactate synthase (AXX17_At3g42690)
  2. Ketol-acid reductoisomerase (AXX17_At3g53150), Ketol-acid reductoisomerase, chloroplastic (At3g58610), Ketol-acid reductoisomerase (At3g58610)
  3. Dihydroxy-acid dehydratase, chloroplastic (DHAD)
  4. Branched-chain-amino-acid aminotransferase 2, chloroplastic (BCAT2), Branched-chain-amino-acid aminotransferase 5, chloroplastic (BCAT5), Branched-chain-amino-acid aminotransferase 6 (BCAT6), Branched-chain-amino-acid aminotransferase 3, chloroplastic (BCAT3)
This subpathway is part of the pathway L-valine biosynthesis, which is itself part of Amino-acid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes L-valine from pyruvate, the pathway L-valine biosynthesis and in Amino-acid biosynthesis.

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionAminotransferase, Transferase
Biological processAmino-acid biosynthesis, Branched-chain amino acid biosynthesis
LigandPyridoxal phosphate

Enzyme and pathway databases

UniPathwayiUPA00047; UER00058
UPA00048; UER00073
UPA00049; UER00062

Names & Taxonomyi

Protein namesi
Recommended name:
Branched-chain-amino-acid aminotransferase 5, chloroplastic (EC:2.6.1.42)
Short name:
Atbcat-5
Gene namesi
Name:BCAT5
Ordered Locus Names:At5g65780
ORF Names:F6H11.110, MPA24.13
OrganismiArabidopsis thaliana (Mouse-ear cress)
Taxonomic identifieri3702 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
Proteomesi
  • UP000006548 Componenti: Chromosome 5

Organism-specific databases

AraportiAT5G65780

Subcellular locationi

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

Keywords - Cellular componenti

Chloroplast, Plastid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transit peptidei1 – 65ChloroplastSequence analysisAdd BLAST65
ChainiPRO_000000127866 – 415Branched-chain-amino-acid aminotransferase 5, chloroplasticAdd BLAST350

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei261N6-(pyridoxal phosphate)lysineBy similarity1

Proteomic databases

PRIDEiQ9FYA6

Expressioni

Gene expression databases

ExpressionAtlasiQ9FYA6 baseline and differential
GenevisibleiQ9FYA6 AT

Interactioni

Protein-protein interaction databases

BioGridi219491 interactor.

Structurei

3D structure databases

ProteinModelPortaliQ9FYA6
SMRiQ9FYA6
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transit peptide

Phylogenomic databases

HOGENOMiHOG000276704
KOiK00826
OMAiGNIDINP
PhylomeDBiQ9FYA6

Family and domain databases

CDDicd01557 BCAT_beta_family, 1 hit
InterProiView protein in InterPro
IPR001544 Aminotrans_IV
IPR018300 Aminotrans_IV_CS
IPR036038 Aminotransferase-like
IPR005786 B_amino_transII
IPR033939 BCAT_family
PfamiView protein in Pfam
PF01063 Aminotran_4, 1 hit
PIRSFiPIRSF006468 BCAT1, 1 hit
SUPFAMiSSF56752 SSF56752, 1 hit
TIGRFAMsiTIGR01123 ilvE_II, 1 hit
PROSITEiView protein in PROSITE
PS00770 AA_TRANSFER_CLASS_4, 1 hit

Sequencei

Sequence statusi: Complete.

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

This entry describes 1 isoform i produced by alternative splicing. AlignAdd to basket

Note: A number of isoforms are produced. According to EST sequences.
Isoform 1 (identifier: Q9FYA6-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

        10         20         30         40         50
MERSAVASGF HRNYILCASR AATSTTRLHS LSSLRNFPSS SLRIRHCPSP
60 70 80 90 100
ISSNFIVSEV SRNRRCDAVS SSTTDVTELA EIDWDKIDFG LKPTDYMYAM
110 120 130 140 150
KCSRDGEFSQ GQLQPFGNID INPAAGVLNY GQGLFEGLKA YRKQDGNILL
160 170 180 190 200
FRPEENAIRM RNGAERMCMP SPTVEQFVEA VKTTVLANKR WIPPPGKGSL
210 220 230 240 250
YIRPLLMGTG AVLGLAPAPE YTFLIFVSPV GNYFKEGVAP INLIVETEFH
260 270 280 290 300
RATPGGTGGV KTIGNYAAVL KAQSIAKAKG YSDVLYLDCL HKRYLEEVSS
310 320 330 340 350
CNIFIVKDNV ISTPEIKGTI LPGITRKSII EVARSQGFKV EERNVTVDEL
360 370 380 390 400
VEADEVFCTG TAVVLSPVGS ITYKSQRFSY GEDGFGTVSK QLYTSLTSLQ
410
MGLSEDNMNW TVQLS
Length:415
Mass (Da):45,581
Last modified:March 1, 2001 - v1
Checksum:i0E3C6321BDD25247
GO

Sequence cautioni

The sequence BAB10685 differs from that shown. Reason: Erroneous gene model prediction.Curated
The sequence CAA16682 differs from that shown. Reason: Erroneous gene model prediction. The predicted gene has been split into 2 genes: At5g65780 and At5g65770.Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AJ293804 mRNA Translation: CAC03680.1
AB010075 Genomic DNA Translation: BAB10685.1 Sequence problems.
AL021684 Genomic DNA Translation: CAA16682.1 Sequence problems.
CP002688 Genomic DNA Translation: AED98106.1
RefSeqiNP_201379.2, NM_125975.8 [Q9FYA6-1]
UniGeneiAt.23243

Genome annotation databases

EnsemblPlantsiAT5G65780.1; AT5G65780.1; AT5G65780 [Q9FYA6-1]
GeneIDi836707
GrameneiAT5G65780.1; AT5G65780.1; AT5G65780 [Q9FYA6-1]
KEGGiath:AT5G65780

Keywords - Coding sequence diversityi

Alternative splicing

Similar proteinsi

Entry informationi

Entry nameiBCAT5_ARATH
AccessioniPrimary (citable) accession number: Q9FYA6
Secondary accession number(s): O49539, Q9FLG9
Entry historyiIntegrated into UniProtKB/Swiss-Prot: December 6, 2002
Last sequence update: March 1, 2001
Last modified: April 25, 2018
This is version 127 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, Reference proteome