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- PDB-9y3k: Crystal Structure of Human Ornithine Aminotransferase Pre-Inactiv... -

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Basic information

Entry
Database: PDB / ID: 9y3k
TitleCrystal Structure of Human Ornithine Aminotransferase Pre-Inactivated by CPP115 (Tight Binding)
ComponentsOrnithine aminotransferase, mitochondrial
KeywordsTRANSFERASE / Mechanism based inactivator / aminotransferase
Function / homology
Function and homology information


: / ornithine aminotransferase / L-ornithine transaminase activity / : / Glutamate and glutamine metabolism / L-proline biosynthetic process / visual perception / pyridoxal phosphate binding / mitochondrial matrix / mitochondrion ...: / ornithine aminotransferase / L-ornithine transaminase activity / : / Glutamate and glutamine metabolism / L-proline biosynthetic process / visual perception / pyridoxal phosphate binding / mitochondrial matrix / mitochondrion / 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
Chem-RW2 / Ornithine aminotransferase, mitochondrial
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.15 Å
AuthorsCorrigan, M.C. / Vargas, A.L. / Kang, K.M. / Silverman, R.B. / Liu, D.
Funding support United States, 4items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI)R01 DA030604 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)R01 CA260250 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)P41 GM108569 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)P30 DA018310 United States
CitationJournal: J.Am.Chem.Soc. / Year: 2026
Title: Targeting Conformational Flexibility of a Reactive Intermediate to Enhance Selectivity of a GABA Aminotransferase Inactivator.
Authors: Kang, K.M. / Vargas, A.L. / Ferreira, L.A. / Des Soye, B.J. / Corrigan, M. / Zhang, C.K. / Wang, F. / Duan, D. / Kelleher, N.L. / Hohmann, A.G. / Liu, D. / Silverman, R.B.
History
DepositionSep 2, 2025Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 22, 2026Provider: repository / Type: Initial release

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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)135,7886
Polymers134,5813
Non-polymers1,2073
Water9,494527
1
A: Ornithine aminotransferase, mitochondrial
hetero molecules

A: Ornithine aminotransferase, mitochondrial
hetero molecules


Theoretical massNumber of molelcules
Total (without water)90,5254
Polymers89,7212
Non-polymers8052
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation4_555y,x,-z1
Buried area10470 Å2
ΔGint-59 kcal/mol
Surface area26180 Å2
MethodPISA
2
B: Ornithine aminotransferase, mitochondrial
C: Ornithine aminotransferase, mitochondrial
hetero molecules


Theoretical massNumber of molelcules
Total (without water)90,5254
Polymers89,7212
Non-polymers8052
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area10460 Å2
ΔGint-61 kcal/mol
Surface area25860 Å2
MethodPISA
Unit cell
Length a, b, c (Å)115.710, 115.710, 187.500
Angle α, β, γ (deg.)90.000, 90.000, 120.000
Int Tables number154
Space group name H-MP3221
Space group name HallP322"
Symmetry operation#1: x,y,z
#2: -y,x-y,z+2/3
#3: -x+y,-x,z+1/3
#4: x-y,-y,-z+1/3
#5: -x,-x+y,-z+2/3
#6: y,x,-z
Components on special symmetry positions
IDModelComponents
11A-668-

HOH

21A-760-

HOH

31B-752-

HOH

41B-796-

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 / Plasmid: BL21DE3 / Production host: Escherichia coli (E. coli) / References: UniProt: P04181, ornithine aminotransferase
#2: Chemical ChemComp-RW2 / (1S)-4-[({3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]pyridin-4-yl}methyl)amino]cyclopent-3-ene-1,3-dicarboxylic acid


Mass: 402.293 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C15H19N2O9P
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 527 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationN

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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: 2.69 Å3/Da / Density % sol: 54.32 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 7.8 / Details: 10% PEG 6000, 100 mM Nacl, 14% glycerol, pH 7.8

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 21-ID-G / Wavelength: 0.978 Å
DetectorType: DECTRIS PILATUS 6M / Detector: PIXEL / Date: Apr 6, 2025
RadiationMonochromator: C(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.978 Å / Relative weight: 1
ReflectionResolution: 2.15→55.28 Å / Num. obs: 79584 / % possible obs: 100 % / Redundancy: 11.2 % / Biso Wilson estimate: 40.02 Å2 / CC1/2: 0.999 / Net I/σ(I): 15.8
Reflection shellResolution: 2.15→2.21 Å / Mean I/σ(I) obs: 1.4 / Num. unique obs: 5828 / CC1/2: 0.498

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Processing

Software
NameVersionClassification
PHENIX1.21.2_5419refinement
autoPROCdata reduction
autoPROCdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.15→53.03 Å / SU ML: 0.2163 / Cross valid method: FREE R-VALUE / σ(F): 1.34 / Phase error: 20.8976
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
RfactorNum. reflection% reflection
Rfree0.2038 4159 5.23 %
Rwork0.1608 75358 -
obs0.1631 79517 99.98 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso mean: 51.91 Å2
Refinement stepCycle: LAST / Resolution: 2.15→53.03 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms9467 0 81 527 10075
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.00799773
X-RAY DIFFRACTIONf_angle_d0.980713285
X-RAY DIFFRACTIONf_chiral_restr0.05831467
X-RAY DIFFRACTIONf_plane_restr0.00751706
X-RAY DIFFRACTIONf_dihedral_angle_d16.92363669
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
2.15-2.170.28061200.24892502X-RAY DIFFRACTION100
2.17-2.20.30891470.24512508X-RAY DIFFRACTION100
2.2-2.230.31411280.23952472X-RAY DIFFRACTION100
2.23-2.260.26841190.23182496X-RAY DIFFRACTION100
2.26-2.280.28011580.22772447X-RAY DIFFRACTION99.96
2.28-2.320.26441030.21762535X-RAY DIFFRACTION100
2.32-2.350.27491650.21832456X-RAY DIFFRACTION100
2.35-2.380.22831100.21092493X-RAY DIFFRACTION100
2.38-2.420.23861440.21282500X-RAY DIFFRACTION100
2.42-2.460.27051330.20552486X-RAY DIFFRACTION100
2.46-2.50.27681460.19062497X-RAY DIFFRACTION99.96
2.5-2.550.23561010.17742487X-RAY DIFFRACTION100
2.55-2.60.24251460.18972502X-RAY DIFFRACTION100
2.6-2.650.25611420.18542474X-RAY DIFFRACTION100
2.65-2.710.19511350.17992520X-RAY DIFFRACTION100
2.71-2.770.24451550.17112488X-RAY DIFFRACTION100
2.77-2.840.22321230.17882497X-RAY DIFFRACTION100
2.84-2.920.22021660.16672470X-RAY DIFFRACTION99.96
2.92-30.21581310.17342494X-RAY DIFFRACTION100
3-3.10.21781740.17372482X-RAY DIFFRACTION100
3.1-3.210.23441410.17022514X-RAY DIFFRACTION100
3.21-3.340.18791500.15742513X-RAY DIFFRACTION100
3.34-3.490.1971220.1562539X-RAY DIFFRACTION100
3.49-3.680.17931290.1442519X-RAY DIFFRACTION99.96
3.68-3.910.18051490.14062524X-RAY DIFFRACTION100
3.91-4.210.18721260.12492531X-RAY DIFFRACTION100
4.21-4.630.18661410.12052567X-RAY DIFFRACTION100
4.63-5.30.161680.1312529X-RAY DIFFRACTION99.96
5.3-6.680.19811340.16382617X-RAY DIFFRACTION100
6.68-53.030.15871530.14632699X-RAY DIFFRACTION99.55
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)
11.4675021643-0.104034920489-0.05623853463390.2293224388960.2889879027690.9078749245870.12144233738-0.4922183281960.2785094028340.08833685646370.0836475882784-0.421193721546-0.2828068161730.478282176773-0.2031623262080.329767866339-0.0455740117062-0.02725089130910.700953699762-0.1781576578550.7879424827449.43312622174-11.19721146215.2698523614
20.750864989789-0.3603993018650.605922199810.664883297319-0.1456530181111.500660951840.201035163672-0.2647399007070.115090632622-0.01068714704650.236605960099-0.350085916264-0.1398088145220.375455839754-0.3544368940560.371348637228-0.1049581821240.097651100520.670525132826-0.1460875301480.93699071314815.1683133197-9.356479453272.90936972562
30.4861049957160.5180240172780.0902924385940.5893943859640.3509637782681.38679702690.1031031978380.08371778230820.391870949751-0.279033998902-0.0210624354694-0.0330301663705-0.4262658582860.119389593641-0.07060059919690.4151348078480.06912272375310.1419709087010.355786399980.04065455305240.635263689562-6.98607749922-7.77933408907-11.9919192203
40.635860633532-0.261677955825-0.6871496649760.789392697395-0.02147375903721.254084688150.0001769886696210.00589721016870.1223545718680.0367356223048-0.0243535161521-0.1737198235670.07658545082650.1240500373850.02185269157540.2261283593050.09685482179930.03929469215040.348054910232-0.006226848849730.362160033781-8.66126629573-31.2883451961-4.49287748551
51.439740810360.790576130927-0.152831926251.23975782335-0.2606325896150.7387454055290.02038738755260.09835043116670.139713623312-0.207126412643-0.0274420575825-0.301758535443-0.01763328233290.1603979155710.009709627149270.2852790544520.1034964974550.1024574860280.4309356357180.01173877299450.4463150515710.631514118456-29.4145214622-15.2343664544
61.447164194770.577330344514-0.0644283314380.7264013716020.3679964324061.747078079220.1416556259660.1026736485020.274995367742-0.1662002188190.0026542793632-0.216482562167-0.2225428161430.313545853058-0.1285863708550.3211431748590.02900031840760.1292245303290.3543781185110.02622364822140.5520723043125.13248529154-15.4649421461-11.6972775171
70.9610710859750.1081335397690.3072750289120.9198115936821.446609350813.505478060090.0961833554287-0.2921021185910.27661318310.3978164112970.00710468754431-0.4182608188790.6828831318320.361441094129-0.1027063495250.3358112393450.0498572457789-0.05226252362690.695176674305-0.06653125912990.73736490744618.3209718744-26.28780151186.08065696606
81.37268551725-0.5303319699730.925838624690.8261963351730.2672388882491.24143986379-0.0730936242535-0.3337484022090.07876272015930.0202548367570.315773601379-0.296183155247-0.2079981182470.609413855171-0.1989996663150.284522002949-0.06299107086070.08633621424340.890768100565-0.1247338803540.94589893423524.8787057652-17.968362088-0.310199939753
91.0079846679-0.371287421950.7564650265090.596857857032-0.09146842741521.864149908290.04363210199450.337675929875-0.0261464793656-0.128167465877-0.0387892986353-0.4054623574430.2722572307210.685685010596-0.04751784655360.5033861702110.2368076592680.07027514592230.622026059667-0.04530132661940.5186068619617.299035706-70.0400109328-16.6519484659
101.69440535929-0.654750229823-0.1337049877281.203185943460.3654451527990.5954810934470.1185256526460.0309132732127-0.1250868948810.1754896909510.00333965549198-0.160134427370.4453030559570.20797783985-0.08782537954330.5470270499930.2244785898430.004638185876860.4588050953940.01671510547120.3167688657893.66901261984-77.8755879099-0.628082289065
110.126901138864-0.124579658810.1969963320711.098472479180.1910002417561.3980909785-0.0179547223628-0.01555496579470.0810981389757-0.0505053892278-0.0282970370974-0.03693846632960.125508399955-0.01387458619450.04276031707340.2833424687150.126665487690.02521656330130.391132335793-0.03128849514630.284630908139-9.64183193397-55.1346507077-4.16273759606
120.767207288039-0.1649001435130.1109469198392.27897739310.1176539924161.09942733007-0.00841468741678-0.1041076985440.02066442537130.219553662454-0.0371787139352-0.01974902818050.1535953253220.04900422161290.03389223260650.3314687354970.1302526033170.005444616830190.412678153647-0.02209832302450.251955621318-4.87128979413-56.91807929716.64018104092
132.454816714750.8951579801120.1192772635151.395135150770.4331333758971.491900157160.0694012179716-0.2323863763630.1632406907420.120684422918-0.0946513772154-0.08126893859950.2936920716030.163807760119-0.02197766160250.4073124807940.2079590588693.90264416923E-50.378093738278-0.01085133355610.3430774090316.87325252468-66.57292006015.54030430506
141.15008611786-0.0249830240081-0.5492263098920.6995568711151.250918416462.257764833660.1937774421180.2565423045140.544365423813-0.3744601179310.137857692536-0.35433829843-0.3390358096460.405968257514-0.2718090513650.4427531591650.1628789144570.1158047876530.6869656757220.03729862485440.62667015418621.0132448275-54.6896013113-4.84308958879
151.863968148670.685753310232-0.3826295227371.542715358550.4413041296521.358897274440.1287579725010.0568868878429-0.1499010400290.1640847676460.138272652225-0.5402420315360.1001485136960.670423781749-0.3205240906640.3535780474030.193369288855-0.0463919826650.710938181356-0.06520759135530.55561775183524.4909642904-62.64666768193.84454455874
160.701459798549-0.156300154940.1954832572111.609317676450.2016805879011.29981384175-0.0648896186794-0.396989698409-0.3412715957150.3808998517510.03843809948870.2487750544840.618092743611-0.07747746590170.05187936081140.722623864766-0.0439729737930.04002637285050.6027477703680.08005934981490.585575715336-17.0134688582-84.64002054420.584177902824
170.5431940993350.1730282444960.2829418175551.663766179-0.3951504482361.03268939171-0.03154793370390.0125420836622-0.136043483765-0.1543987153060.0341966860274-0.1593653813130.6664141857410.1764960741820.00606088347580.7047067703310.1745745274580.0306602785290.374132643087-0.03884791996880.373452719390.180722671024-83.2405478673-13.8434009118
180.2063091532140.050393544153-0.05657969866011.171984974350.3923997523231.884535548090.01688900709550.03363400906850.10876524926-0.07510557998470.008819654987760.1398648506380.222613220521-0.321453296994-0.02649939703940.3913273695920.08537831631440.02122567815260.4498823637070.007876648463370.291124506769-13.4436550111-61.8512740325-24.3400630543
190.866991618202-0.02823943263990.03141120418951.34884279233-0.3898378147661.57711127746-0.02616627182630.187460843361-0.0894789604042-0.3245702402060.0695221967049-0.08215339524490.37821863224-0.103714695304-0.02839814828770.5093050491430.09399206837650.02945258080860.376620560434-0.04261638423020.259601172408-6.84986504118-71.2910105064-29.3558031944
201.429970886450.4831469566950.06204773274322.19075761417-0.1721316758251.59797695582-0.07100231998540.231687016041-0.279526189612-0.2100915485740.2218892207640.02734687275010.797907478374-0.0588327598479-0.1220328251940.6786025418780.04434392779540.0002402881168270.379924519312-0.02877753658680.272901483343-10.8421328287-83.1100606788-23.4881024351
210.2450112492770.0251828366517-0.3782211971420.1012181916410.2089219031391.19252841941-0.21778927333-0.02136560031860.7940176610740.168474381683-0.05688118172950.4464830169290.505268356359-0.7321171141380.2062774959480.774502757095-0.1396909109910.04310363704920.9160278965430.1816791721950.972472348804-33.5664426751-86.2662797733-12.3223874915
221.909021301660.147205245635-0.04815860717611.49731098422-0.0101973607952.227005313290.119043048484-0.252071064062-0.220034380699-0.2465702856230.1402063298370.3686994046460.871514804929-0.740487231211-0.2767664953690.940286382557-0.171869528019-0.05626134194780.5508441001280.0439704090330.590963192893-23.4096020169-91.9928409574-18.0884385294
Refinement TLS group

Refine-ID: X-RAY DIFFRACTION

IDRefine TLS-IDSelection detailsAuth asym-IDLabel asym-IDAuth seq-IDLabel seq-ID
11chain 'A' and (resid 37 through 70 )AA37 - 701 - 34
22chain 'A' and (resid 71 through 95 )AA71 - 9535 - 59
33chain 'A' and (resid 96 through 158 )AA96 - 15860 - 122
44chain 'A' and (resid 159 through 212 )AA159 - 212123 - 176
55chain 'A' and (resid 213 through 276 )AA213 - 276177 - 240
66chain 'A' and (resid 277 through 371 )AA277 - 371241 - 335
77chain 'A' and (resid 372 through 411 )AA372 - 411336 - 375
88chain 'A' and (resid 412 through 439 )AA412 - 439376 - 403
99chain 'B' and (resid 37 through 70 )BC37 - 701 - 34
1010chain 'B' and (resid 71 through 130 )BC71 - 13035 - 94
1111chain 'B' and (resid 131 through 212 )BC131 - 21295 - 176
1212chain 'B' and (resid 213 through 313 )BC213 - 313177 - 277
1313chain 'B' and (resid 314 through 371 )BC314 - 371278 - 335
1414chain 'B' and (resid 372 through 411 )BC372 - 411336 - 375
1515chain 'B' and (resid 412 through 439 )BC412 - 439376 - 403
1616chain 'C' and (resid 37 through 70 )CE37 - 701 - 34
1717chain 'C' and (resid 71 through 130 )CE71 - 13035 - 94
1818chain 'C' and (resid 131 through 245 )CE131 - 24595 - 209
1919chain 'C' and (resid 246 through 313 )CE246 - 313210 - 277
2020chain 'C' and (resid 314 through 380 )CE314 - 380278 - 344
2121chain 'C' and (resid 381 through 399 )CE381 - 399345 - 363
2222chain 'C' and (resid 400 through 439 )CE400 - 439364 - 403

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