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1EKP

CRYSTAL STRUCTURE OF HUMAN BRANCHED CHAIN AMINO ACID AMINOTRANSFERASE (MITOCHONDRIAL) COMPLEXED WITH PYRIDOXAL-5'-PHOSPHATE AT 2.5 ANGSTROMS (MONOCLINIC FORM).

Functional Information from GO Data
ChainGOidnamespacecontents
A0003824molecular_functioncatalytic activity
A0004084molecular_functionbranched-chain-amino-acid transaminase activity
A0005515molecular_functionprotein binding
A0005739cellular_componentmitochondrion
A0005759cellular_componentmitochondrial matrix
A0006550biological_processL-isoleucine catabolic process
A0006574biological_processL-valine catabolic process
A0009081biological_processbranched-chain amino acid metabolic process
A0009082biological_processbranched-chain amino acid biosynthetic process
A0009083biological_processbranched-chain amino acid catabolic process
A0050873biological_processbrown fat cell differentiation
A0052654molecular_functionL-leucine-2-oxoglutarate transaminase activity
A0052655molecular_functionL-valine-2-oxoglutarate transaminase activity
A0052656molecular_functionL-isoleucine-2-oxoglutarate transaminase activity
A0097009biological_processenergy homeostasis
A1903444biological_processnegative regulation of brown fat cell differentiation
B0003824molecular_functioncatalytic activity
B0004084molecular_functionbranched-chain-amino-acid transaminase activity
B0005515molecular_functionprotein binding
B0005739cellular_componentmitochondrion
B0005759cellular_componentmitochondrial matrix
B0006550biological_processL-isoleucine catabolic process
B0006574biological_processL-valine catabolic process
B0009081biological_processbranched-chain amino acid metabolic process
B0009082biological_processbranched-chain amino acid biosynthetic process
B0009083biological_processbranched-chain amino acid catabolic process
B0050873biological_processbrown fat cell differentiation
B0052654molecular_functionL-leucine-2-oxoglutarate transaminase activity
B0052655molecular_functionL-valine-2-oxoglutarate transaminase activity
B0052656molecular_functionL-isoleucine-2-oxoglutarate transaminase activity
B0097009biological_processenergy homeostasis
B1903444biological_processnegative regulation of brown fat cell differentiation
Functional Information from PDB Data
site_idAC1
Number of Residues12
DetailsBINDING SITE FOR RESIDUE PLP A 370
ChainResidue
AARG99
ATHR313
AHOH377
AHOH402
ALYS202
ATYR207
AGLU237
ATHR240
ALEU266
AGLY268
AVAL269
AVAL270

site_idAC2
Number of Residues14
DetailsBINDING SITE FOR RESIDUE PLP B 370
ChainResidue
BARG99
BARG192
BLYS202
BTYR207
BGLU237
BTHR240
BLEU266
BGLY268
BVAL269
BVAL270
BTHR313
BHOH376
BHOH399
BHOH407

Functional Information from PROSITE/UniProt
site_idPS00770
Number of Residues35
DetailsAA_TRANSFER_CLASS_4 Aminotransferases class-IV signature. EvGtmNIFvywthedgvle.LvTpplngvi.LpGVvR
ChainResidueDetails
AGLU237-ARG271

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues12
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"12269802","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues2
DetailsModified residue: {"description":"N6-(pyridoxal phosphate)lysine","evidences":[{"source":"PubMed","id":"16141215","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"17050531","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"2A1H","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2HDK","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2HG8","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2HGW","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2HGX","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2HHF","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"source":"PubMed","id":"19608861","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues1
DetailsAnnotated By Reference To The Literature 1iyd
ChainResidueDetails
ALYS202

site_idCSA2
Number of Residues1
DetailsAnnotated By Reference To The Literature 1iyd
ChainResidueDetails
BLYS202

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PDB entries from 2026-04-01

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