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- PDB-7lom: Ornithine Aminotransferase (OAT) soaked with its inactivator - (1... -

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Basic information

Entry
Database: PDB / ID: 7lom
TitleOrnithine Aminotransferase (OAT) soaked with its inactivator - (1S,3S)-3-amino-4-(difluoromethylene)cyclohexene-1-carboxylic acid
ComponentsOrnithine aminotransferase, mitochondrial
KeywordsTRANSFERASE/Inactivator / Ornithine Aminotransferase / OAT / aminotransferase / inactivator / inhibitor / TRANSFERASE / TRANSFERASE-Inactivator complex
Function / homology
Function and homology information


arginine catabolic process to proline via ornithine / ornithine aminotransferase activity / ornithine aminotransferase / arginine catabolic process to glutamate / L-proline biosynthetic process / Glutamate and glutamine metabolism / visual perception / pyridoxal phosphate binding / mitochondrial matrix / mitochondrion ...arginine catabolic process to proline via ornithine / ornithine aminotransferase activity / ornithine aminotransferase / arginine catabolic process to glutamate / L-proline biosynthetic process / Glutamate and glutamine metabolism / visual perception / pyridoxal phosphate binding / mitochondrial matrix / mitochondrion / nucleoplasm / identical protein binding / cytoplasm
Similarity search - Function
Ornithine aminotransferase / : / Aminotransferases class-III pyridoxal-phosphate attachment site. / Aminotransferase class-III / Aminotransferase class-III / Pyridoxal phosphate-dependent transferase, small domain / Pyridoxal phosphate-dependent transferase, major domain / Pyridoxal phosphate-dependent transferase
Similarity search - Domain/homology
THREONINE / Chem-Y8P / Chem-YCD / Ornithine aminotransferase, mitochondrial
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.1 Å
AuthorsButrin, A. / Zhu, W. / Liu, D. / Silverman, R.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute on Drug Abuse (NIH/NIDA) United States
CitationJournal: J.Am.Chem.Soc. / Year: 2021
Title: Remarkable and Unexpected Mechanism for ( S )-3-Amino-4-(difluoromethylenyl)cyclohex-1-ene-1-carboxylic Acid as a Selective Inactivator of Human Ornithine Aminotransferase.
Authors: Zhu, W. / Doubleday, P.F. / Butrin, A. / Weerawarna, P.M. / Melani, R.D. / Catlin, D.S. / Dwight, T.A. / Liu, D. / Kelleher, N.L. / Silverman, R.B.
History
DepositionFeb 10, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 25, 2021Provider: repository / Type: Initial release
Revision 1.1Oct 18, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Ornithine aminotransferase, mitochondrial
B: Ornithine aminotransferase, mitochondrial
C: Ornithine aminotransferase, mitochondrial
hetero molecules


Theoretical massNumber of molelcules
Total (without water)136,1159
Polymers134,5813
Non-polymers1,5346
Water8,467470
1
A: Ornithine aminotransferase, mitochondrial
hetero molecules

A: Ornithine aminotransferase, mitochondrial
hetero molecules


Theoretical massNumber of molelcules
Total (without water)90,7366
Polymers89,7212
Non-polymers1,0154
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation6_554-x,-x+y,-z-1/31
Buried area10470 Å2
ΔGint-62 kcal/mol
Surface area26360 Å2
MethodPISA
2
B: Ornithine aminotransferase, mitochondrial
hetero molecules

C: Ornithine aminotransferase, mitochondrial
hetero molecules


Theoretical massNumber of molelcules
Total (without water)90,7486
Polymers89,7212
Non-polymers1,0274
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_444-y-1,x-y-1,z-1/31
Buried area10490 Å2
ΔGint-65 kcal/mol
Surface area25890 Å2
MethodPISA
Unit cell
Length a, b, c (Å)115.610, 115.610, 186.570
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number154
Space group name H-MP3221
Components on special symmetry positions
IDModelComponents
11A-670-

HOH

21A-757-

HOH

31C-772-

HOH

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Components

#1: Protein Ornithine aminotransferase, mitochondrial / / Ornithine delta-aminotransferase / Ornithine--oxo-acid aminotransferase


Mass: 44860.320 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: OAT / Production host: Escherichia coli (E. coli) / References: UniProt: P04181, ornithine aminotransferase
#2: Chemical ChemComp-THR / THREONINE / Threonine


Type: L-peptide linking / Mass: 119.119 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C4H9NO3
#3: Chemical ChemComp-Y8P / (3~{S},4~{S})-4-methyl-3-[[2-methyl-3-oxidanyl-5-(phosphonooxymethyl)pyridin-4-yl]methylamino]cyclohexene-1-carboxylic acid


Mass: 388.353 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C16H25N2O7P
#4: Chemical ChemComp-YCD / (4~{R})-4-(fluoranylmethyl)-3-[[2-methyl-3-oxidanyl-5-(phosphonooxymethyl)pyridin-4-yl]methylamino]cyclohexene-1-carboxylic acid


Mass: 400.295 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C16H18FN2O7P
#5: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 470 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestY

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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: 2.66 Å3/Da / Density % sol: 53.79 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop
Details: The holoenzyme crystals were first grown via a hanging drop vapor diffusion method. Each drop contained 2 uL of protein and 2 uL of well solution. The best crystallization condition ...Details: The holoenzyme crystals were first grown via a hanging drop vapor diffusion method. Each drop contained 2 uL of protein and 2 uL of well solution. The best crystallization condition contained 8% PEG 6000, 100 mM NaCl, 5% glycerol, and 50 mM Tricine pH 7.8. Once the holoenzyme crystals reached their maximum size within five days, 1 uL of 10 mM 181 was added to the drop with crystals. Within the first three minutes of 181 addition, the hOAT crystals turned their color from yellow to transparent. The crystals were soaked for 44 minutes, transferred into cryoprotective solution (well solution supplemented with 30% glycerol), and then flash-frozen in liquid nitrogen.

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 21-ID-D / Wavelength: 1.1271 Å
DetectorType: DECTRIS EIGER X 9M / Detector: PIXEL / Date: Sep 19, 2020
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.1271 Å / Relative weight: 1
ReflectionResolution: 2.1→44.11 Å / Num. obs: 83376 / % possible obs: 98.4 % / Redundancy: 7 % / Biso Wilson estimate: 34.37 Å2 / Rpim(I) all: 0.065 / Rrim(I) all: 0.175 / Net I/σ(I): 7.3 / Num. measured all: 579510
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Mean I/σ(I) obsNum. measured allNum. unique obsRpim(I) allRrim(I) all% possible all
2.1-2.147.10.92984241940.8252.23599.8
5.7-44.127.322.83130342780.0250.07194.8

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Processing

Software
NameVersionClassification
PHENIX1.17.1_3660refinement
xia2data scaling
PDB_EXTRACT3.27data extraction
xia2data reduction
PHENIXphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1OAT
Resolution: 2.1→44.11 Å / SU ML: 0.26 / Cross valid method: THROUGHOUT / σ(F): 1.33 / Phase error: 25.36 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.235 4098 4.92 %
Rwork0.2 --
obs0.201 83345 98.4 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso mean: 52.21 Å2
Refinement stepCycle: LAST / Resolution: 2.1→44.11 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms9450 0 100 470 10020
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
2.1-2.120.34911320.33572771X-RAY DIFFRACTION100
2.12-2.150.31861590.31772693X-RAY DIFFRACTION100
2.15-2.180.34021320.30882750X-RAY DIFFRACTION100
2.18-2.210.32151300.29792742X-RAY DIFFRACTION99
2.21-2.240.31711270.2922753X-RAY DIFFRACTION99
2.24-2.270.3141510.28822726X-RAY DIFFRACTION100
2.27-2.30.30511710.27772724X-RAY DIFFRACTION99
2.3-2.340.29591310.27872703X-RAY DIFFRACTION99
2.34-2.380.26671250.26022759X-RAY DIFFRACTION100
2.38-2.420.30251380.25922739X-RAY DIFFRACTION99
2.42-2.460.26741380.25042742X-RAY DIFFRACTION99
2.46-2.510.29281650.23882718X-RAY DIFFRACTION99
2.51-2.560.28411580.24052713X-RAY DIFFRACTION99
2.56-2.620.27661480.24192702X-RAY DIFFRACTION99
2.62-2.680.24661530.23472742X-RAY DIFFRACTION99
2.68-2.740.2821470.21872710X-RAY DIFFRACTION99
2.74-2.820.25871440.21392734X-RAY DIFFRACTION99
2.82-2.90.271280.21542721X-RAY DIFFRACTION99
2.9-2.990.25761230.21822742X-RAY DIFFRACTION99
2.99-3.10.25311580.21382727X-RAY DIFFRACTION98
3.1-3.230.22711370.20322766X-RAY DIFFRACTION98
3.23-3.370.25721370.19922712X-RAY DIFFRACTION98
3.37-3.550.21541110.18922737X-RAY DIFFRACTION98
3.55-3.770.1902970.17492761X-RAY DIFFRACTION97
3.77-4.060.22871360.15882721X-RAY DIFFRACTION97
4.06-4.470.19321660.15472701X-RAY DIFFRACTION97
4.47-5.120.18221730.15592672X-RAY DIFFRACTION96
5.12-6.450.23951220.18292779X-RAY DIFFRACTION96
6.45-44.110.18341610.15852787X-RAY DIFFRACTION94
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL112)L122)L132)L222)L232)L332)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T112)T122)T132)T222)T232)T332)Origin x (Å)Origin y (Å)Origin z (Å)
10.01380.03790.04610.2570.37280.59670.11351.0044-0.027-0.21910.22590.4321-0.3879-0.4739-0.28910.36420.0517-0.07630.82070.20271.0195-6.9524-13.1446-50.137
21.73430.512-0.38630.62860.0351.35260.19150.16350.53510.09610.04930.3783-0.56-0.542-0.19260.47950.13470.14020.46810.13811.1654-7.7291-3.6626-30.5824
31.11110.5346-0.4780.5837-0.12191.10610.0913-0.03360.15170.0898-0.03950.17-0.0972-0.0741-0.04250.2461-0.06840.06360.3279-0.01870.51088.0004-24.5853-21.4841
41.376-0.43980.51052.3343-0.43381.36110.0643-0.00210.30440.19040.00350.4231-0.1086-0.2535-0.07160.2795-0.06880.11430.39-0.02970.5898-1.7564-26.448-15.2802
53.4721-0.10750.37371.1844-0.40361.88060.191-0.06360.16370.18420.04180.5403-0.1322-0.4632-0.15620.2524-0.00840.11240.38330.03760.7654-8.1381-17.343-23.7105
60.60010.27790.64070.33020.02961.014-0.02630.27070.13-0.05410.2160.7156-0.1362-0.81750.2776-0.02960.00540.06891.0280.27931.1748-21.9813-20.0202-34.8944
71.8788-0.6224-0.79650.23470.25910.35930.04660.47020.4159-0.4756-0.04740.0035-0.27620.4444-0.13730.5899-0.077-0.010.57530.11080.69733.0445-43.1139-97.2476
82.08810.2105-0.00091.60680.08654.22010.0746-0.09790.4316-0.2412-0.0609-0.4221-0.46440.7348-0.12450.5706-0.28590.0560.6676-0.00480.626216.0434-40.7689-85.9445
92.09550.6917-0.2632.8980.65742.1184-0.0463-0.1419-0.00070.22830.1442-0.17-0.49520.7069-0.12910.3217-0.1205-0.04420.75830.0390.442316.6552-56.035-80.2091
100.5150.1958-0.48921.11960.09321.60810.0159-0.1165-0.189-0.003-0.0054-0.046-0.02480.321-0.00780.21210.0513-0.05430.48260.04210.3507-1.9008-66.9961-71.7501
111.09150.207-0.39321.4972-0.25332.09940.1153-0.09020.12990.1079-0.01190.2452-0.3264-0.0408-0.07860.32910.03910.00230.3777-0.0190.3824-12.1962-53.3858-65.87
121.3094-0.2416-0.10581.336-0.24641.58750.1212-0.2072-0.19040.0859-0.0538-0.2686-0.05220.5596-0.0690.2297-0.0161-0.04680.53380.0090.34285.6238-60.6237-70.1775
132.61281.7903-0.65744.44160.43313.28430.1636-0.41061.08920.6690.17750.2432-0.85960.5693-0.13210.7217-0.2880.09190.5675-0.10930.6747.09-35.2214-66.3178
140.8462-1.12521.30055.5537-1.03985.83460.1179-0.24790.8167-0.25310.27520.5021-1.27480.114-0.20350.8731-0.09630.02430.48060.03570.93790.6492-28.1465-82.2089
152.333-2.32771.54575.768-1.43565.02680.0479-0.2130.79860.1551-0.0262-0.349-1.00010.3056-0.04460.5826-0.29460.08520.6222-0.10670.75539.8177-34.2023-75.4471
160.04090.01990.01540.13070.02040.0075-0.0006-0.4484-0.07190.0268-0.02770.3580.4811-0.41620.00210.4512-0.190.12750.52810.0340.6381-16.4871-67.7967-9.9132
171.4383-0.64380.42030.73410.05381.14020.1847-0.2822-0.16530.0208-0.09740.43840.2477-0.3282-0.02480.5071-0.25940.00930.47520.02570.6505-15.0044-75.335-28.3855
181.10450.26790.06912.08930.05252.0545-0.02110.06-0.1555-0.0203-0.068-0.21730.43160.14280.05770.3215-0.04230.04840.34330.00470.368211.693-66.1183-30.8485
190.0203-0.0280.20771.26-0.47291.98480.02560.00680.08920.0360.0567-0.0111-0.0203-0.18590.06750.2299-0.09420.00890.28640.01730.37135.198-47.1245-25.483
203.59630.38770.42722.2097-0.1111.1143-0.15070.175-0.0692-0.23630.05180.0299-0.00590.0240.04840.3561-0.1115-0.00330.34420.02130.38145.4131-50.566-37.9604
212.67860.24270.692.3681-0.43571.2359-0.02630.3513-0.0354-0.23990.04750.0927-0.0818-0.1075-0.02710.3686-0.12240.00090.3374-0.02210.3261-0.4414-62.5193-39.7791
222.22880.0328-0.01621.9983-0.26971.05880.04350.1404-0.1883-0.2240.03690.14790.3392-0.1322-0.04690.4065-0.13470.03290.3419-0.00920.2988-0.7684-68.7168-35.6576
232.30680.84561.06052.681-0.53971.96980.1161-0.24190.61850.5298-0.14740.8264-0.1292-0.5747-0.07030.3787-0.09520.10670.561-0.00431.0318-21.3303-49.7186-30.8447
242.2698-1.9827-2.49272.33731.20395.36550.06820.02820.1639-0.0120.01940.4369-0.1311-0.3235-0.09670.3103-0.19640.01790.54630.07250.6957-23.5061-60.4373-29.8966
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection details
1X-RAY DIFFRACTION1CHAIN 'A' AND (RESID 37 THROUGH 61 )
2X-RAY DIFFRACTION2CHAIN 'A' AND (RESID 62 THROUGH 117 )
3X-RAY DIFFRACTION3CHAIN 'A' AND (RESID 118 THROUGH 220 )
4X-RAY DIFFRACTION4CHAIN 'A' AND (RESID 221 THROUGH 290 )
5X-RAY DIFFRACTION5CHAIN 'A' AND (RESID 291 THROUGH 389 )
6X-RAY DIFFRACTION6CHAIN 'A' AND (RESID 390 THROUGH 439 )
7X-RAY DIFFRACTION7CHAIN 'B' AND (RESID 37 THROUGH 61 )
8X-RAY DIFFRACTION8CHAIN 'B' AND (RESID 62 THROUGH 82 )
9X-RAY DIFFRACTION9CHAIN 'B' AND (RESID 83 THROUGH 106 )
10X-RAY DIFFRACTION10CHAIN 'B' AND (RESID 107 THROUGH 181 )
11X-RAY DIFFRACTION11CHAIN 'B' AND (RESID 182 THROUGH 263 )
12X-RAY DIFFRACTION12CHAIN 'B' AND (RESID 264 THROUGH 344 )
13X-RAY DIFFRACTION13CHAIN 'B' AND (RESID 345 THROUGH 381 )
14X-RAY DIFFRACTION14CHAIN 'B' AND (RESID 382 THROUGH 400 )
15X-RAY DIFFRACTION15CHAIN 'B' AND (RESID 401 THROUGH 439 )
16X-RAY DIFFRACTION16CHAIN 'C' AND (RESID 37 THROUGH 61 )
17X-RAY DIFFRACTION17CHAIN 'C' AND (RESID 62 THROUGH 105 )
18X-RAY DIFFRACTION18CHAIN 'C' AND (RESID 106 THROUGH 181 )
19X-RAY DIFFRACTION19CHAIN 'C' AND (RESID 182 THROUGH 220 )
20X-RAY DIFFRACTION20CHAIN 'C' AND (RESID 221 THROUGH 263 )
21X-RAY DIFFRACTION21CHAIN 'C' AND (RESID 264 THROUGH 295 )
22X-RAY DIFFRACTION22CHAIN 'C' AND (RESID 296 THROUGH 362 )
23X-RAY DIFFRACTION23CHAIN 'C' AND (RESID 363 THROUGH 389 )
24X-RAY DIFFRACTION24CHAIN 'C' AND (RESID 390 THROUGH 439 )

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