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- PDB-2coj: Crystal structure of reduced human cytosolic branched-chain amino... -

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Basic information

Entry
Database: PDB / ID: 2coj
TitleCrystal structure of reduced human cytosolic branched-chain aminotransferase complexed with gabapentin
Componentsbranched chain aminotransferase 1, cytosolic
KeywordsTRANSFERASE / PLP-dependent enzyme
Function / homology
Function and homology information


branched-chain-amino-acid transaminase activity / branched-chain amino acid biosynthetic process / L-leucine-2-oxoglutarate transaminase activity / branched-chain-amino-acid transaminase / : / L-valine-2-oxoglutarate transaminase activity / L-isoleucine-2-oxoglutarate transaminase activity / Branched-chain amino acid catabolism / L-leucine biosynthetic process / L-valine biosynthetic process ...branched-chain-amino-acid transaminase activity / branched-chain amino acid biosynthetic process / L-leucine-2-oxoglutarate transaminase activity / branched-chain-amino-acid transaminase / : / L-valine-2-oxoglutarate transaminase activity / L-isoleucine-2-oxoglutarate transaminase activity / Branched-chain amino acid catabolism / L-leucine biosynthetic process / L-valine biosynthetic process / lipid metabolic process / G1/S transition of mitotic cell cycle / mitochondrion / cytosol
Similarity search - Function
Branched-chain amino acid aminotransferase II / Branched-chain aminotransferase / Aminotransferase, class IV, conserved site / Aminotransferases class-IV signature. / Aminotransferase class 4, branched-chain amino acid transferase, N-terminal domain / D-amino Acid Aminotransferase; Chain A, domain 2 / D-amino Acid Aminotransferase, subunit A, domain 2 / Branched-chain-amino-acid aminotransferase-like, N-terminal / Aminotransferase class IV / Aminotransferase-like, PLP-dependent enzymes ...Branched-chain amino acid aminotransferase II / Branched-chain aminotransferase / Aminotransferase, class IV, conserved site / Aminotransferases class-IV signature. / Aminotransferase class 4, branched-chain amino acid transferase, N-terminal domain / D-amino Acid Aminotransferase; Chain A, domain 2 / D-amino Acid Aminotransferase, subunit A, domain 2 / Branched-chain-amino-acid aminotransferase-like, N-terminal / Aminotransferase class IV / Aminotransferase-like, PLP-dependent enzymes / Branched-chain-amino-acid aminotransferase-like, C-terminal / Amino-transferase class IV / D-amino Acid Aminotransferase; Chain A, domain 1 / Alpha-Beta Barrel / 2-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
[1-(AMINOMETHYL)CYCLOHEXYL]ACETIC ACID / PYRIDOXAL-5'-PHOSPHATE / Branched-chain-amino-acid aminotransferase, cytosolic
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.4 Å
AuthorsGoto, M.
CitationJournal: J.Biol.Chem. / Year: 2005
Title: Structural determinants for branched-chain aminotransferase isozyme-specific inhibition by the anticonvulsant drug gabapentin
Authors: Goto, M. / Miyahara, I. / Hirotsu, K. / Conway, M. / Yennawar, N. / Islam, M.M. / Hutson, S.M.
History
DepositionMay 17, 2005Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Aug 30, 2005Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Non-polymer description / Version format compliance
Revision 1.3Nov 10, 2021Group: Database references / Derived calculations
Category: database_2 / pdbx_struct_conn_angle ...database_2 / pdbx_struct_conn_angle / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: branched chain aminotransferase 1, cytosolic
B: branched chain aminotransferase 1, cytosolic
hetero molecules


Theoretical massNumber of molelcules
Total (without water)87,0197
Polymers86,1582
Non-polymers8615
Water2,666148
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area7020 Å2
ΔGint-45 kcal/mol
Surface area25970 Å2
MethodPISA
Unit cell
Length a, b, c (Å)66.870, 106.630, 109.820
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein branched chain aminotransferase 1, cytosolic


Mass: 43079.098 Da / Num. of mol.: 2 / Mutation: S379R
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli)
References: UniProt: P54687, branched-chain-amino-acid transaminase
#2: Chemical ChemComp-PLP / PYRIDOXAL-5'-PHOSPHATE / VITAMIN B6 Phosphate


Mass: 247.142 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C8H10NO6P
#3: Chemical ChemComp-GBN / [1-(AMINOMETHYL)CYCLOHEXYL]ACETIC ACID / GABAPENTIN


Mass: 171.237 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C9H17NO2 / Comment: medication*YM
#4: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 148 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.3 Å3/Da / Density % sol: 46.2 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 7.5
Details: PEG4000, magnesium chloride, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: Photon Factory / Beamline: AR-NW12A / Wavelength: 1 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Jun 18, 2003
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.4→50 Å / Num. all: 31418 / Num. obs: 28933 / % possible obs: 92.1 % / Biso Wilson estimate: 34.2 Å2
Reflection shellResolution: 2.4→2.49 Å / % possible all: 99.8

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Processing

Software
NameVersionClassification
CNS1.1refinement
HKL-2000data reduction
SCALEPACKdata scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.4→42.44 Å / Rfactor Rfree error: 0.005 / Data cutoff high absF: 2689713.47 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 2
RfactorNum. reflection% reflectionSelection details
Rfree0.272 2873 10 %RANDOM
Rwork0.213 ---
obs0.213 28651 91.2 %-
all-31418 --
Solvent computationSolvent model: FLAT MODEL / Bsol: 30.6489 Å2 / ksol: 0.340746 e/Å3
Displacement parametersBiso mean: 33.3 Å2
Baniso -1Baniso -2Baniso -3
1--16.26 Å20 Å20 Å2
2--10.01 Å20 Å2
3---6.26 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.4 Å0.29 Å
Luzzati d res low-5 Å
Luzzati sigma a0.4 Å0.27 Å
Refinement stepCycle: LAST / Resolution: 2.4→42.44 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5653 0 55 148 5856
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.007
X-RAY DIFFRACTIONc_angle_deg1.4
X-RAY DIFFRACTIONc_dihedral_angle_d24.3
X-RAY DIFFRACTIONc_improper_angle_d0.92
X-RAY DIFFRACTIONc_mcbond_it1.351.5
X-RAY DIFFRACTIONc_mcangle_it2.112
X-RAY DIFFRACTIONc_scbond_it20.132
X-RAY DIFFRACTIONc_scangle_it18.622.5
LS refinement shellResolution: 2.4→2.55 Å / Rfactor Rfree error: 0.016 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.34 468 9.2 %
Rwork0.267 4594 -
obs--98.1 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2water_rep.paramwater_rep.top
X-RAY DIFFRACTION3CNS_LOCAL:param.plpCNS_LOCAL:top.plp
X-RAY DIFFRACTION4CNS_LOCAL:param.etcCNS_LOCAL:top.etc
X-RAY DIFFRACTION5gbp.pargbp.top
X-RAY DIFFRACTION6ion.paramion.top

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