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- PDB-7sky: Pertussis toxin S1 bound to NAD+ -

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Basic information

Entry
Database: PDB / ID: 7sky
TitlePertussis toxin S1 bound to NAD+
ComponentsPertussis toxin subunit 1
KeywordsTOXIN / TRANSFERASE / Whooping cough / Pertussis / pertussis toxin / S1 / ADP ribosyltransferase
Function / homology
Function and homology information


Transferases; Glycosyltransferases; Pentosyltransferases / NAD+ ADP-ribosyltransferase activity / nucleotidyltransferase activity / toxin activity / extracellular region
Similarity search - Function
Bordetella pertussis toxin A / Pertussis toxin, subunit 1
Similarity search - Domain/homology
IODIDE ION / NICOTINAMIDE-ADENINE-DINUCLEOTIDE / Pertussis toxin subunit 1
Similarity search - Component
Biological speciesBordetella pertussis (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.37000129415 Å
AuthorsLittler, D.R. / Beddoe, T. / Pulliainen, A. / Rossjohn, J.
Funding support Australia, 1items
OrganizationGrant numberCountry
Australian Research Council (ARC) Australia
CitationJournal: J.Biol.Chem. / Year: 2022
Title: Crystal structures of pertussis toxin with NAD + and analogs provide structural insights into the mechanism of its cytosolic ADP-ribosylation activity.
Authors: Sakari, M. / Tran, M.T. / Rossjohn, J. / Pulliainen, A.T. / Beddoe, T. / Littler, D.R.
History
DepositionOct 21, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 13, 2022Provider: repository / Type: Initial release
Revision 1.1Apr 20, 2022Group: Database references / Category: citation
Item: _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2May 18, 2022Group: Database references / Category: citation / Item: _citation.journal_volume
Revision 1.3Oct 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
B: Pertussis toxin subunit 1
A: Pertussis toxin subunit 1
C: Pertussis toxin subunit 1
D: Pertussis toxin subunit 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)86,12712
Polymers82,9664
Non-polymers3,1618
Water12,232679
1
B: Pertussis toxin subunit 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)21,5323
Polymers20,7411
Non-polymers7902
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
A: Pertussis toxin subunit 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)21,5323
Polymers20,7411
Non-polymers7902
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
3
C: Pertussis toxin subunit 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)21,5323
Polymers20,7411
Non-polymers7902
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
4
D: Pertussis toxin subunit 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)21,5323
Polymers20,7411
Non-polymers7902
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)34.600, 68.250, 71.670
Angle α, β, γ (deg.)90.730, 90.270, 91.450
Int Tables number1
Space group name H-MP1
Space group name HallP1
Symmetry operation#1: x,y,z

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Components

#1: Protein
Pertussis toxin subunit 1 / PTX S1 / Islet-activating protein S1 / IAP S1 / NAD-dependent ADP-ribosyltransferase


Mass: 20741.420 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bordetella pertussis (bacteria) / Gene: ptxA, BP3783 / Production host: Escherichia coli BL21 (bacteria)
References: UniProt: P04977, Transferases; Glycosyltransferases; Pentosyltransferases, NAD+ ADP-ribosyltransferase
#2: Chemical
ChemComp-IOD / IODIDE ION


Mass: 126.904 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: I
#3: Chemical
ChemComp-NAD / NICOTINAMIDE-ADENINE-DINUCLEOTIDE


Mass: 663.425 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C21H27N7O14P2 / Feature type: SUBJECT OF INVESTIGATION / Comment: NAD*YM
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 679 / 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: 2.04 Å3/Da / Density % sol: 39.68 %
Crystal growTemperature: 295 K / Method: vapor diffusion, hanging drop / Details: 25% PEG 3350, 0.2M KI

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: Australian Synchrotron / Beamline: MX2 / Wavelength: 0.9537 Å
DetectorType: ADSC QUANTUM 315r / Detector: CCD / Date: Jun 29, 2014
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9537 Å / Relative weight: 1
ReflectionResolution: 1.37→71.7 Å / Num. obs: 124642 / % possible obs: 90.2 % / Redundancy: 4.7 % / Biso Wilson estimate: 9.05511472041 Å2 / CC1/2: 0.992 / Rpim(I) all: 0.063 / Net I/σ(I): 8.3
Reflection shellResolution: 1.37→1.44 Å / Mean I/σ(I) obs: 2.4 / Num. unique obs: 13351 / CC1/2: 0.703 / Rpim(I) all: 0.34

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Processing

Software
NameVersionClassification
PHENIX1.10.1_2155refinement
PHENIX1.10.1_2155refinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1PRT
Resolution: 1.37000129415→24.6012684719 Å / SU ML: 0.144158047756 / Cross valid method: FREE R-VALUE / σ(F): 1.9781522464 / Phase error: 23.0379162467
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
RfactorNum. reflection% reflectionSelection details
Rfree0.224258567421 6148 4.93605131952 %Random selection
Rwork0.201996339423 118405 --
obs0.203125348054 124553 90.3854806171 %-
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso mean: 18.9331529187 Å2
Refinement stepCycle: LAST / Resolution: 1.37000129415→24.6012684719 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5705 0 180 679 6564
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.01599335824976040
X-RAY DIFFRACTIONf_angle_d1.16412913438251
X-RAY DIFFRACTIONf_chiral_restr0.087030633469849
X-RAY DIFFRACTIONf_plane_restr0.006325103063391091
X-RAY DIFFRACTIONf_dihedral_angle_d22.62978422922121
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
1.371-1.38560.271841767915890.2620993195372456X-RAY DIFFRACTION54.4734589041
1.3856-1.40190.2731363839881260.2668429594392572X-RAY DIFFRACTION59.1926283458
1.4019-1.4190.2835639329951340.2532509524742863X-RAY DIFFRACTION65.8970976253
1.419-1.43690.2659002124051740.2537606867783391X-RAY DIFFRACTION76.6831576683
1.4369-1.45580.2565777457771900.2572058979973934X-RAY DIFFRACTION90.3593339176
1.4558-1.47580.2759125815461730.2576949087414072X-RAY DIFFRACTION92.6047120419
1.4758-1.49680.2761306331642390.2390634506054050X-RAY DIFFRACTION93.5033791149
1.4968-1.51920.2780232056131800.2400794837424125X-RAY DIFFRACTION93.3839479393
1.5192-1.54290.2503676832272260.2251161214954033X-RAY DIFFRACTION93.1539807524
1.5429-1.56820.2335647768242500.2196534999394086X-RAY DIFFRACTION93.9341421144
1.5682-1.59530.2513163804941830.2204363851444073X-RAY DIFFRACTION93.5179081521
1.5953-1.62430.2342392668741930.215754175644148X-RAY DIFFRACTION94.2261775559
1.6243-1.65550.2347153029672390.2114475110614132X-RAY DIFFRACTION94.2432082794
1.6555-1.68930.2707668567092160.209661593754054X-RAY DIFFRACTION94.1358024691
1.6893-1.7260.2442667334562390.2044821789484157X-RAY DIFFRACTION94.578313253
1.726-1.76610.237216669351990.2011875732634093X-RAY DIFFRACTION94.7461368653
1.7661-1.81030.2360523956772170.2012293203394180X-RAY DIFFRACTION94.5591397849
1.8103-1.85920.2232195072571800.199669902714116X-RAY DIFFRACTION94.5214521452
1.8592-1.91390.229186073572440.2015807468164159X-RAY DIFFRACTION95.2617914323
1.9139-1.97570.2227915700412400.1953431102024084X-RAY DIFFRACTION94.9494949495
1.9757-2.04620.2306504823522370.194228685184199X-RAY DIFFRACTION95.2340060112
2.0462-2.12810.1966532548292060.1940855628714124X-RAY DIFFRACTION95.185755111
2.1281-2.22490.2032628911152570.1831581838234127X-RAY DIFFRACTION95.3250706675
2.2249-2.34210.2263431468442440.1931073247414165X-RAY DIFFRACTION95.5777151528
2.3421-2.48870.2169305793762270.1947609913724162X-RAY DIFFRACTION95.600087127
2.4887-2.68070.2437626698722570.2052229683074163X-RAY DIFFRACTION96.0451977401
2.6807-2.950.2024732108941240.2027904677374248X-RAY DIFFRACTION95.7302386687
2.95-3.3760.2097639362682370.1894483271054162X-RAY DIFFRACTION95.9851625573
3.376-4.24980.194417367681510.1749497808024247X-RAY DIFFRACTION95.4634252225
4.2498-24.50.2016973716352770.1933058708224030X-RAY DIFFRACTION93.8957924569
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)
11.46353490121-0.324810932313-0.2094832886942.2761841561-0.1144592016811.246680723220.03858908458060.02501745754260.0552484278781-0.183778194969-0.01182336939910.0105248038718-0.0655561104655-0.0667165685478-0.01129117215340.050575127954-0.001981318337990.01178268051720.05000242480940.005972588275680.03743954882412.60427677206-5.12835332386-25.5735663468
22.547687167030.05476504343590.06047935592441.17484803601-0.1628157305491.080644486690.0583238870508-0.108704405878-0.224913767473-0.02211579466350.03239850432410.1967044678060.159818554621-0.200186797733-0.0731591015730.0756335858705-0.0254723751572-0.01151798229010.09322548291360.02175871171960.0848069562724-8.51426876269-12.2584022125-19.0109470724
34.78448654284-0.1224477008860.9015369390795.854023229642.991412871925.72856932569-0.01949617767380.336754896107-0.371372661574-0.4169359759960.00778117157792-0.1755043255080.445092739976-0.0733398776345-0.0628660851350.201808863531-0.03520498771180.04731525456830.08577549256250.01323669454870.08742520525584.63071248452-21.5651707388-31.6041640686
42.24787274215-0.510686664887-0.8397118408091.03345118371-0.9417951240141.524241093420.05415140554990.273808394608-0.157113527129-0.4202472413580.01524638607670.008398380084250.1428553351060.0621402440282-0.04832724172240.1607919729670.0174105907534-0.01205186123170.04590732040080.001546470436110.04298213543062.11675777962-11.1510991818-30.4548329267
52.364208865212.52385912408-1.702975716893.16837532222-2.441263989073.519914566520.03584619982110.01324794094890.05689253753230.0568263503918-0.02950128900270.149601395802-0.00551707580779-0.0960978741307-0.008746968004550.04530518218280.0002955327438820.004880877733810.0702389926603-0.001008008392240.0516850191141-5.08796453264-13.8977804655-5.94932754087
62.00949745691-1.940885395810.9464207910383.510057308220.7508990718312.569486331430.0300083366989-0.139380143254-0.018013285460.1451989557030.06202298801110.3788682941380.250182667148-0.374188247989-0.01636146385750.108702823861-0.0306758787640.01119589658140.1099108900570.0124468552790.115061075005-2.41823295155-24.1286164576-5.99948896045
71.29332346104-0.182956723078-0.8494850751892.23334638609-0.05748274727281.968108540520.00396677845550.00869239796142-0.0557640136949-0.119154510605-0.00888841237204-0.07076086614040.008068209658680.0381492478377-0.01336988411730.0494128455007-0.00260327555458-0.01328903979380.05957858943770.01381111993140.053966091542.65588214628-6.19214779101-24.1091328683
80.678256253163-0.05291048401230.2739086539547.877610612667.135801905336.531315175270.1503611601550.235150846942-0.102181974954-0.2446371920280.130387910799-0.8562429522130.5696968499430.487124361499-0.5050177071280.3735443829770.08715851325430.08377728747220.168206780172-0.02837453339990.1525163288710.3446476912-12.8998997308-40.6445693112
92.20133757131.38143596987-1.875539438512.76851871032-2.241397896233.50850139010.0930131923882-0.2190254623640.1446918869030.113325484505-0.07879693236075.22487772217E-5-0.3004805540270.09359140517-0.01234098067890.09376952883060.00776243713309-0.005657046232680.0694169317931-0.02341956922450.06622457094473.224713325980.36998504777-14.5874416038
102.51154872587-0.0104438460170.008172924541371.581846898560.1034710376053.172257423470.0003779661886890.0615754455775-0.01907170538630.0596618192462-0.008623659424810.05121236370210.150025694432-0.00481470080572-0.001681123519660.03302618854790.0261546530290.0154856152310.04829860145240.002883738711390.03713729776611.4820257485-24.93326323296.26274490052
111.89876895126-0.08557678280410.5910307937021.904386229620.4878895392051.40540363171-0.0422934456075-0.166908795322-0.000944422144540.133256148408-0.001049909023180.2055005040520.0235831810966-0.06940129472680.02445329787680.0638425501251-0.003139550457520.02341991536210.06128861331010.007193135553540.05840274566160.189689287305-18.252446783913.0519735812
121.795060047381.59748440308-0.3434269589817.65917558353-4.182597909183.20825352769-0.058374958637-0.279674219844-0.2675362502750.412971541556-0.0892013362198-0.06662269761330.1354481041470.4330204086470.139161317870.2008024902780.08352736203610.01504192526760.1698653862750.008812125676520.090810527394213.3967945189-29.453554295523.2509500231
133.75814687518-0.3928592340190.7232892969993.894290552820.05071917306176.02821669557-0.5878937053030.0138288021811-0.10772701922-0.5992586405550.1185105735490.2135641617340.312820505588-0.3323485895720.4696021650320.4186939421360.03129699328010.05788656384410.3562819620180.1732293627420.3521881039686.65603826349-41.384452397826.7558957197
141.63665928419-0.73971233220.1694250879754.17944470189-1.956487568093.578206375470.00554134457968-0.0023615103362-0.02828991508770.0264812997949-0.02710692027020.06837338152860.2083589898790.1072473838030.03450612313550.0539943802921-0.002209872556290.005921658537870.0483252677032-0.02045748543580.036243891751912.685818924-24.05616587587.03712731956
155.38321553782-3.1629891163-3.427389921484.897830271614.154425722435.39412328740.0185947535824-0.1632926452120.2702204729290.07180147224470.0615450985993-0.00995772785517-0.177888168694-0.103026467815-0.1073796097110.07389317707390.003943061530940.01430967512090.05517141366210.009136309553660.09156845173893.41546106723-4.9872247988513.9128640302
161.7482583138-0.223310951759-0.5054095279132.214346370240.2513827151781.579402636090.0458553590009-0.4400640486640.2308454979040.3955274537550.0622676117688-0.0986012328874-0.122670846654-0.0583227991661-0.1337284456020.1501017917350.01376138638630.01127467228810.169718056843-0.04252350853480.1325956262564.40491420462-10.899135168216.9259053853
172.30625686482-1.05335311651.648228445344.17499162767-3.804545509177.466611464010.0121025086454-0.197088777911-0.3154023800660.1073799122990.1196499122590.0509119840360.3828779872990.239767716441-0.0827612630440.09445369238490.05126596666090.01095975587330.1219345862390.001168324854360.10417343117115.5429518235-30.20934667587.08542595986
181.305658756810.577052241960.9354692028293.6900640401-4.70495016118.189269442980.0946095611829-0.212492102068-0.3458750475860.5407205117840.005843806441920.1179053611060.3496578366780.450676272205-0.02831555316990.3737449430040.1472970095680.02266647009910.26767366110.06542000972580.22979572987719.2222959969-39.021807929215.0244846879
191.81833094423-1.51848834238-1.282800161654.519130543291.471750006471.722405718160.1134229622660.1719068773550.15003763838-0.309017890283-0.0241554595761-0.130875435398-0.195837704726-0.0163725944528-0.07713891728450.0656523108302-0.015769764442-0.03015232855480.1093139968340.01407434078880.06036221045211.6773373799-14.3685166723-0.0472233580663
201.6363608920.8520117345580.2826917360041.534646680350.5808641838781.29754287201-0.00588092940736-0.0009023286053330.0873324795035-0.0197674615293-0.05872161005140.198644676308-0.0265331232892-0.06961093122070.06173953601350.05661757923280.00921692504611-0.007949732637820.04261618214740.004418181785230.0783138152706-12.531021412421.535362774-10.6858915899
212.5920566953-1.568172707591.985986238257.56453344905-4.63822212076.03521569563-0.02940623946770.2642400670440.291008620081-0.386891985403-0.07045068663870.18052174865-0.2026507017840.1917617551290.06308650909630.178689496089-0.0333328965497-0.01553043888410.08917315734370.000274127645270.121644779788-6.1551150481132.6107116121-24.1756127121
220.6795529434641.000791409550.3184170128713.078721619830.657073472960.6668482416140.0448622538374-0.00682593617129-0.0404664579560.0813663917444-0.0370507262430.1408456550460.0802354471598-0.067647096728-0.0150044927360.04590612387360.004685732843390.01262225507160.0593845938287-0.0002882066526650.0798256277387-9.3605025019314.5949608886-11.1005670369
230.8050834109530.615704315914-0.07633570719611.84479226719-0.2066520179020.595869013198-0.005917175189160.0356645204838-0.0776255368363-0.08179579727290.009846380754350.04121010359640.0484237206656-0.0188960814155-0.01405449627730.06702857551060.0136187850528-0.002880625709870.0562757400682-0.009869426022740.0808128555543-5.8209678290222.1243732498-9.75301372129
242.05533919026-0.04157246670970.1123808857111.79651420959-0.5071487904531.64057921155-0.002684704979730.06854877783030.1553670323980.02523509890160.03550318474980.2610423569870.0145791508696-0.218439739726-0.01755052225470.05992365913060.005606091496050.002615160550250.09294999520930.002717997428640.092064517713712.78475895399.8333744646221.2880393505
251.322695810510.06599170279920.2887058436833.500481750831.249888702352.716030183820.00507461489854-0.06124499802470.1537210250160.292254873358-0.1369171269560.0481188914041-0.15519580434-0.2003334194920.1046567304910.1121900783560.0103948744371-0.003122974209970.08719799626040.003665642512670.067344066268120.013299975417.225817564930.6881438957
265.45787980774-4.904693607665.630006573635.08421120885-4.876645826288.4609193096-0.02430499632470.03372585781470.28258240544-0.159211899056-0.04662770048680.105447533422-0.246664913062-0.03665350782680.06980775565020.1040088354040.0173086583984-0.01421485773130.1302229385910.01615083563660.10851484914512.193307954414.63548718045.49888798022
272.779439074162.81427155179-2.172268784444.57022723689-1.434821670792.029305344030.3613500924370.3049850182621.592922815960.3145494186280.1674925282670.0489237994948-0.5335056163620.265004627029-0.4523673563071.09055881649-0.187717818144-0.1716060802210.5934167380730.08639987285880.99029290452514.755112222824.50953711625.05265100328
281.60203397798-0.3809444565570.1983917434812.19169562866-0.5038543232671.34629124303-0.0839629952334-0.04651248290850.211142559540.298870139815-0.019263844536-0.128847718666-0.09256261938990.04673239352080.04016519324640.10821901049-0.00700591550212-0.01682631523640.06941905557270.003674540507220.086351827517521.9728830378.8539685849928.9096265616
292.42096567802-1.864242232791.736752234872.92340820984-1.88833934823.911602554630.1665757866460.258806618714-0.161504441083-0.260256322393-0.1689251569410.147011051030.323295303060.07211575200450.003263156429350.11381484856-0.0107209667177-0.000399775644650.099380666577-0.01951696144810.080939879840720.03960233590.10106807197114.1718244902
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection details
1X-RAY DIFFRACTION1chain 'B' and (resid 1 through 21 )
2X-RAY DIFFRACTION2chain 'B' and (resid 22 through 56 )
3X-RAY DIFFRACTION3chain 'B' and (resid 57 through 76 )
4X-RAY DIFFRACTION4chain 'B' and (resid 77 through 96 )
5X-RAY DIFFRACTION5chain 'B' and (resid 97 through 111 )
6X-RAY DIFFRACTION6chain 'B' and (resid 112 through 126 )
7X-RAY DIFFRACTION7chain 'B' and (resid 127 through 149 )
8X-RAY DIFFRACTION8chain 'B' and (resid 150 through 162 )
9X-RAY DIFFRACTION9chain 'B' and (resid 163 through 180 )
10X-RAY DIFFRACTION10chain 'A' and (resid 1 through 21 )
11X-RAY DIFFRACTION11chain 'A' and (resid 22 through 56 )
12X-RAY DIFFRACTION12chain 'A' and (resid 57 through 76 )
13X-RAY DIFFRACTION13chain 'A' and (resid 77 through 83 )
14X-RAY DIFFRACTION14chain 'A' and (resid 84 through 96 )
15X-RAY DIFFRACTION15chain 'A' and (resid 97 through 111 )
16X-RAY DIFFRACTION16chain 'A' and (resid 112 through 137 )
17X-RAY DIFFRACTION17chain 'A' and (resid 138 through 149 )
18X-RAY DIFFRACTION18chain 'A' and (resid 150 through 162 )
19X-RAY DIFFRACTION19chain 'A' and (resid 163 through 180 )
20X-RAY DIFFRACTION20chain 'C' and (resid 1 through 56 )
21X-RAY DIFFRACTION21chain 'C' and (resid 57 through 83 )
22X-RAY DIFFRACTION22chain 'C' and (resid 84 through 111 )
23X-RAY DIFFRACTION23chain 'C' and (resid 112 through 180 )
24X-RAY DIFFRACTION24chain 'D' and (resid 1 through 56 )
25X-RAY DIFFRACTION25chain 'D' and (resid 57 through 96 )
26X-RAY DIFFRACTION26chain 'D' and (resid 97 through 111 )
27X-RAY DIFFRACTION27chain 'D' and (resid 112 through 126 )
28X-RAY DIFFRACTION28chain 'D' and (resid 127 through 162 )
29X-RAY DIFFRACTION29chain 'D' and (resid 163 through 180 )

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