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- PDB-8dk7: Crystal structure of theophylline aptamer soaked with TAL2 -

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Basic information

Entry
Database: PDB / ID: 8dk7
TitleCrystal structure of theophylline aptamer soaked with TAL2
Components
  • FAB heavy chain
  • FAB light chain
  • RNA (34-MER)
KeywordsRNA/IMMUNE SYSTEM / RNA / aptamer / theophylline / RNA-IMMUNE SYSTEM complex
Function / homologyRNA / RNA (> 10)
Function and homology information
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.46 Å
AuthorsMenichelli, E. / Spraggon, G.
Funding support1items
OrganizationGrant numberCountry
Other private
CitationJournal: Proc.Natl.Acad.Sci.USA / Year: 2022
Title: Discovery of small molecules that target a tertiary-structured RNA.
Authors: Menichelli, E. / Lam, B.J. / Wang, Y. / Wang, V.S. / Shaffer, J. / Tjhung, K.F. / Bursulaya, B. / Nguyen, T.N. / Vo, T. / Alper, P.B. / McAllister, C.S. / Jones, D.H. / Spraggon, G. / ...Authors: Menichelli, E. / Lam, B.J. / Wang, Y. / Wang, V.S. / Shaffer, J. / Tjhung, K.F. / Bursulaya, B. / Nguyen, T.N. / Vo, T. / Alper, P.B. / McAllister, C.S. / Jones, D.H. / Spraggon, G. / Michellys, P.Y. / Joslin, J. / Joyce, G.F. / Rogers, J.
History
DepositionJul 4, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 30, 2022Provider: repository / Type: Initial release
Revision 1.1Oct 25, 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: FAB light chain
B: FAB heavy chain
C: RNA (34-MER)
D: FAB heavy chain
E: FAB light chain
F: RNA (34-MER)


Theoretical massNumber of molelcules
Total (without water)117,1976
Polymers117,1976
Non-polymers00
Water77543
1
A: FAB light chain
B: FAB heavy chain
C: RNA (34-MER)


Theoretical massNumber of molelcules
Total (without water)58,5993
Polymers58,5993
Non-polymers00
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
D: FAB heavy chain
E: FAB light chain
F: RNA (34-MER)


Theoretical massNumber of molelcules
Total (without water)58,5993
Polymers58,5993
Non-polymers00
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)38.392, 90.115, 93.751
Angle α, β, γ (deg.)83.530, 89.400, 84.570
Int Tables number1
Space group name H-MP1
Space group name HallP1
Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
d_1ens_1(chain "A" and (resid 2 through 24 or resid 26...
d_2ens_1(chain "E" and (resid 2 through 24 or resid 26...
d_1ens_2(chain "B" and resid 4 through 225)
d_2ens_2(chain "D" and resid 4 through 225)
d_1ens_3(chain "C" and (resid 1 through 27 or resid 29 through 34))
d_2ens_3(chain "F" and (resid 1 through 27 or resid 29 through 34))

NCS domain segments:
Dom-IDComponent-IDEns-IDBeg label comp-IDEnd label comp-IDLabel asym-IDLabel seq-ID
d_11ens_1ASPCYSA1 - 23
d_12ens_1ALAGLYA25 - 41
d_13ens_1ALAASPA43 - 82
d_14ens_1ALALEUA84 - 125
d_15ens_1SERPROA127 - 141
d_16ens_1GLUALAA143 - 144
d_17ens_1VALTRPA146 - 148
d_18ens_1GLNSERA153 - 166
d_19ens_1ASPSERA168 - 180
d_110ens_1ALAARGA182 - 209
d_21ens_1ASPCYSE1 - 23
d_22ens_1ALAGLYE25 - 41
d_23ens_1ALAASPE43 - 82
d_24ens_1ALALEUE84 - 125
d_25ens_1SERPROE127 - 141
d_26ens_1GLUALAE143 - 144
d_27ens_1VALTRPE146 - 148
d_28ens_1GLNSERE155 - 168
d_29ens_1ASPSERE170 - 182
d_210ens_1ALAARGE184 - 211
d_11ens_2GLUPROB1 - 222
d_21ens_2GLUPROD1 - 222
d_11ens_3GCC
d_21ens_3GCF

NCS ensembles :
ID
ens_1
ens_2
ens_3

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Components

#1: Antibody FAB light chain


Mass: 23334.836 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#2: Antibody FAB heavy chain


Mass: 24336.160 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#3: RNA chain RNA (34-MER)


Mass: 10927.590 Da / Num. of mol.: 2 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 43 / 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: 2.74 Å3/Da / Density % sol: 55.05 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop / pH: 8.8 / Details: PEG 3350, citrate, bis-Tris propane

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: ALS / Beamline: 5.0.3 / Wavelength: 0.97648 Å
DetectorType: ADSC QUANTUM 315r / Detector: CCD / Date: Apr 15, 2019
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97648 Å / Relative weight: 1
ReflectionResolution: 2.46→89.15 Å / Num. obs: 41522 / % possible obs: 92.06 % / Redundancy: 3.7 % / Biso Wilson estimate: 48.52 Å2 / CC1/2: 0.999 / CC star: 1 / Rmerge(I) obs: 0.04971 / Net I/σ(I): 15.53
Reflection shellResolution: 2.46→2.55 Å / Redundancy: 3.2 % / Rmerge(I) obs: 0.434 / Num. unique obs: 4391 / CC1/2: 0.883 / CC star: 0.969 / % possible all: 96.35

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Processing

Software
NameVersionClassification
PHENIX1.20.1_4487refinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 6B14
Resolution: 2.46→89.14 Å / SU ML: 0.2977 / Cross valid method: FREE R-VALUE / σ(F): 1.97 / Phase error: 30.8235
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
RfactorNum. reflection% reflection
Rfree0.2695 2106 5.08 %
Rwork0.2464 39371 -
obs0.2475 41477 92.06 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso mean: 90.73 Å2
Refinement stepCycle: LAST / Resolution: 2.46→89.14 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6563 1446 0 43 8052
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.02378330
X-RAY DIFFRACTIONf_angle_d1.09911641
X-RAY DIFFRACTIONf_chiral_restr0.04941362
X-RAY DIFFRACTIONf_plane_restr0.00671234
X-RAY DIFFRACTIONf_dihedral_angle_d11.31141749
Refine LS restraints NCS
Ens-IDDom-IDAuth asym-IDRefine-IDTypeRms dev position (Å)
ens_1d_2AX-RAY DIFFRACTIONTorsion NCS0.888883200331
ens_2d_2BX-RAY DIFFRACTIONTorsion NCS0.854918747056
ens_3d_2CX-RAY DIFFRACTIONTorsion NCS1.03077023719
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
2.46-2.520.34941580.3512736X-RAY DIFFRACTION95.92
2.52-2.580.35881530.33182781X-RAY DIFFRACTION97.12
2.58-2.650.36561340.34942553X-RAY DIFFRACTION96.07
2.67-2.730.31841050.30411863X-RAY DIFFRACTION92.74
2.73-2.820.34671680.30732712X-RAY DIFFRACTION97.59
2.82-2.920.33671420.28942810X-RAY DIFFRACTION97.46
2.92-3.040.28761670.28022751X-RAY DIFFRACTION97.66
3.04-3.170.2731260.27272845X-RAY DIFFRACTION97.92
3.17-3.340.29921440.27942761X-RAY DIFFRACTION97.88
3.34-3.550.26081390.25182278X-RAY DIFFRACTION80.38
3.55-3.820.31691180.24812436X-RAY DIFFRACTION84.43
3.82-4.210.27161150.22942468X-RAY DIFFRACTION86.21
4.21-4.820.21171490.19992803X-RAY DIFFRACTION97.75
4.82-6.070.2341670.21642748X-RAY DIFFRACTION98.25
6.07-89.140.21811210.21352826X-RAY DIFFRACTION97.84
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)
10.341850987129-0.3029022828960.1057896812610.4382750436280.01275656080090.089805193157-0.344061195546-0.8758347072630.204816790641.291520405170.04687854660.0290281909851-0.5161418846430.270811972002-0.2941985628271.88320824204-0.03445977779420.3125458702910.720338592395-0.4335017454450.310221713626.3015665491731.229481652671.123191605
23.043506257880.529081967984-1.802904382630.940878872227-1.817454873973.810366689920.621250211455-0.5259509583620.632310963120.6716164938240.3646642622890.7132096593-0.588987402952-0.444535182302-0.1951689342921.2857156451-0.146296401476-0.009979149132180.8960700697720.08803466358190.167558088359-1.349775888414.823676999971.2990539783
31.934950196280.416938271311-0.5055366647724.40115161183-1.898863678564.25742668960.396002774683-0.243489411006-0.611513383171-0.1405521594460.6567069241830.3554834684911.44860516863-1.03221110545-0.1374584580161.06682594179-0.260515721496-0.1811838651890.8579838409230.4385023704570.352302897365-5.37320228315-4.7081850859377.4642523295
43.24480324792-0.8269413321583.101650924867.53995221655-2.766609108854.315120645050.02830932770990.522960078115-0.1422156769930.4393399587850.05157046119730.722363285466-0.279485684775-0.148593375565-0.03042976555450.244194748512-0.07624116165210.1403093120140.3456115457240.0313211916860.2838799612750.91525078497417.107086496847.9856797286
53.962398138230.307378467665-0.9884288353220.0772475377690.2551155177912.624520954780.226211872331-0.2820666147590.516019011550.759275349439-0.1575365907910.213231511991-0.3098644864470.403406031546-0.09013043727780.645508588574-0.1108177850510.1721603492260.299088655083-0.05677154960860.2629492236356.5209459510927.313193921749.9092243066
64.97857071478-4.2305548492.775706183368.38761749596-5.855749338767.2415425480.1513769625230.1674427960290.373849850240.57023650902-0.309430912132-0.236017645085-0.494392231080.3579356873540.1609222283480.248570173391-0.05854083757230.1452781469110.334605318431-0.07547310030030.2892251276869.3759958474523.476364150844.3801174422
70.7046340367280.0512439396191-0.6540470026794.586482637081.046072231733.559809639070.192612763585-0.2455668102490.2629864876330.2769689357480.221589428614-0.482262276249-0.3392687662290.656627692026-0.07495864039740.432051080769-0.09710092536490.252389103930.4281370937970.004685453346180.04219760649347.809378343118.001285556752.3873124959
86.446860506684.061311871072.165694301322.815090425210.8733657738074.067415011760.0472783528216-0.7621412544351.114347449690.5449661659110.01043705021450.5823404719-1.31864455034-0.351943689150.09032256092621.40735369957-0.08253031004550.3817593075850.625402819476-0.1697258445210.4616725789522.9049134589837.731835310757.2023898529
95.42296431027-0.5778900015440.1880315904616.827847776420.7509077439056.50837398220.609530232857-0.2230170002860.271138751853-0.0601798359966-0.1986121994220.0725167502539-0.255664420170.0141440279793-0.5369055426330.199233070753-0.05553276421380.07761212018850.411688851965-0.05278528488310.2118069306020.7957825457386.4842635671551.8223790441
102.48105048403-0.01127145946452.410343132741.304960889180.2112875649262.385623731920.416192489465-1.32295974457-0.4699083799280.4082261939170.04645665694660.5058751792860.743521573364-1.51075898375-0.1388466519940.885685678224-0.669590893315-0.4788930300451.753929093890.5072303550560.609429460652-16.3183531253-4.6805379926769.1702531837
113.485365515921.04000309247-1.275628704632.113997562590.8868740005091.359067304190.650479628056-0.815587383015-0.4467108386940.3561489425870.2470710818230.3861989714150.192457867865-1.26080608627-0.1648803222350.472511164232-0.004503472179320.08790435867521.272216463840.3273480510310.391582202067-11.2234923352.9089478520464.8169189229
121.72687011155-0.290982008488-1.858406040371.155970122640.5111184757242.015577716870.145911350711-0.477112176182-0.3496486518760.348106764157-0.1207148406930.2931707888330.231282530951-1.694065151080.1082965406790.665688512552-0.3050538375880.04860458236241.616027856060.4335752196430.472504803238-19.1055049952-1.0778234528259.8959321979
134.258181723932.08383136684-2.008580964233.28198201934-0.5108840530291.04524671709-0.349318794809-0.9209854000091.66608014731-0.3439466905040.102096153313-0.179412189502-0.5802514965580.5238668822040.3189330937542.28593729046-0.926412522907-0.6351955330781.77329069011-0.09049693100641.9649499249724.411801260462.263222364952.6215950395
146.52956311004-2.46097793616-0.8586116397525.62207971627-1.288549593381.136926903410.0205982170734-0.7939637361161.414571317591.45099109737-0.0434877713735-0.0603954406848-1.280785308520.665485597029-0.002311265245051.30439247685-0.4254642730940.1474756827760.397071205188-0.1420998762520.81970180109812.255497418545.400305225549.0302724959
158.75576774794.084314902632.090329313595.589381536342.65327367761.26440001352-0.218168936783-1.540206631581.480806003-0.215604159426-0.5778813353650.921965088713-1.034542258131.171560320720.8740839913721.67240778202-0.490479246019-0.2103282726551.63534864487-0.5027725857381.696286893825.306533468662.424334431955.9760331513
163.96638188435-1.039963683322.645606116383.102207829961.515791030954.751137694170.375360974335-0.1770598484710.19957362682-0.1020672999910.0573426930994-0.691626631241-0.3184651747490.0121494416513-0.2792096870240.2198891024370.1021255762280.1035058400240.377636641116-0.0320312884570.341903904389-7.4075977163313.631423591335.4767477674
172.07198580033-0.03786852878710.1463711836593.127549348630.7874120600641.831357017020.1709767729980.08281180467830.104238620401-0.533097214392-0.164758437642-0.226261036249-0.463841027725-0.267323481640.03971847300350.3970020380830.1247249602850.1395376291820.4187530413620.06079318606660.178983009513-14.651838694619.595242036431.2844723855
184.95309206738-0.7402353145991.974643207410.6534941836180.1818781904474.40204058771-0.2391109888640.8488465248350.876803770497-0.358658419385-0.326142492899-0.745216630374-0.9124314490670.4320478012310.3537802208480.7778748105770.06066292369850.2600286462470.6163818370340.1713190324210.335908180509-9.3885806973123.079409145120.6413882812
192.29252861557-1.477018252152.690409499773.06639495521-0.5207254458534.550216880450.5890465435670.158567433415-0.434542151088-0.0732454291276-0.280744415046-0.607492121043-0.1651290715070.297610571129-0.2434826859190.2144542994050.0343205900575-0.01941446384660.1967059252080.1614922781240.413109288077-7.294392915162.4871003720237.6416965745
200.7812073416290.925076892320.9744212967782.427981682541.287580824514.177444109250.2173840510891.00710690007-0.79164540973-0.2529993105080.419194704217-0.7111628423910.8540030685071.15378026414-1.626392320781.310189608190.483216913154-0.7874129202911.4073979482-0.9423010365541.5056258564113.5261074653-19.284871916627.2545216947
211.23499058898-0.3020478536790.2819247927510.414802436086-0.8564310279581.932583087570.664550706130.851383972683-1.21035956822-0.01355393072050.651187326088-0.8931711858640.8131553449130.89278141772-0.308993784570.4476415243470.0572385092363-0.1321922169450.911326603327-0.5260220878580.9180256883194.75924931875-8.5468697985829.0980099881
223.83258923737-1.39791290292-2.422564129891.216410854150.2664976258152.046806959940.4130925464990.164235889475-0.349318241173-0.02739306887891.01229626558-1.072192080410.7147236774521.88016172147-0.7800181597630.6868528584550.307840394816-0.264669242151.12634630023-0.6697748436210.94353388809612.4500194054-8.3740001779335.0840538091
233.20597990417-0.834131514831.224013109132.615585865130.3452053734760.784414747798-0.3417733744230.4405962635420.0774762030643-0.9867850897090.282030448594-0.1406725832120.4971359133060.222676379547-0.1556208153661.239680548490.04469814991540.1221373680641.073805118630.01761054991460.193093565406-13.6841653876.014967294497.5892486959
241.163950255430.230805071793-0.3537130769061.69895357771-1.274691407051.637482638320.262525974960.661818115233-0.271414686088-1.59353176872-0.573489003192-0.4764843297640.2781461315540.02845663252350.2443528022561.383118690570.3379354440550.492606538870.9975141777350.0770648782042-0.117861520651-10.365450852814.52771548878.82148005138
252.53887398483-0.3058416859580.0655034480253.395367892081.039629318061.626615384150.1847171798260.949988168972-0.533158736009-1.04758598713-0.171597373922-0.225230368779-0.431706192443-0.369486714576-0.07235028091070.8347198718280.0595929340970.143569492990.853141692452-0.116403950980.362414930467-10.77311727965.3156441805312.5380524404
261.21789590116-1.289227231310.8761027018341.69793450709-2.031918067064.226138919670.6230028913350.228487665565-0.9829851784930.7718964594520.372135367172-0.2671146395171.234262745640.37386421334-0.3422552449871.249735422080.226289754399-0.5006012130470.494991384297-0.4392350408631.150132988170.956465360931-19.47114619124.3037882397
270.871793526871.0760940199-1.112526362345.833589913471.442328366413.161530727210.4420362236040.121536374652-1.49791336210.634040507262-0.439827985671-0.1332587460561.96592274243-0.128636964857-0.008231625078561.09905555676-0.0536151786856-0.4949538905920.668621915039-0.3166933828681.53770473627-8.04137674469-22.933887628124.6943872192
282.90882088068-0.681266847023-2.540032662957.05983269727-0.2541304703032.326262461440.805917016430.5894725746820.157212412859-0.455048125378-0.159633502036-1.05920227664-0.04250767159720.887528934326-0.5262001475650.8948180282490.0310054145560.1096216235560.885105759832-0.389976354480.7830453703373.06740194838-4.571028953113.5993270185
292.09780279091-0.86636177608-0.3581259011550.9839671050090.9509136492121.086966331070.3648675060340.0686833007701-1.245620911060.404140398607-0.06394735510010.343680860132.27253386619-0.0717679438454-0.1075279036291.673378560770.112798716705-0.5027896355390.526586504914-0.2597551262081.39278590686-0.846916850552-26.3849474223.7406393363
305.00808302206-1.176117699580.2064585239016.86191813301-5.455743596084.40453597462-0.3358661246851.925275592961.55393991902-1.7363835303-0.2711943423681.38194818669-1.23143115718-0.5954542638960.6461296283762.720664882930.57811031738-0.2780274136141.395449021140.3448497790411.17461793168-23.753776063445.40340428569.3321208386
312.73804475171-0.283835200382-0.008053465523640.02659186062570.001584082535280.000921315905019-0.2414312134751.456657360271.56740625007-1.448596633970.5224105586270.973968560017-1.07784910098-0.625924241489-0.2156214486011.92076608610.395595932212-0.1503658529370.9962134785460.6338559704310.868382524-22.944684760241.530995296815.0616045377
321.1256597155-1.079102193040.5899430592587.03513842886-4.039603064082.454737292040.8829294525551.76851674612-0.3730785096390.65634531763-0.1837717083570.620695222891.177926692321.48280957948-0.7853202420932.931237322820.645722606147-0.4397349175472.28690241687-0.04586492886761.51149076394-32.973506431147.19662814470.151919395924
Refinement TLS group

Refine-ID: X-RAY DIFFRACTION

IDRefine TLS-IDSelection detailsAuth asym-IDLabel asym-IDAuth seq-IDLabel seq-ID
11chain 'A' and (resid 2 through 76 )AA2 - 761 - 75
22chain 'A' and (resid 77 through 128 )AA77 - 12876 - 127
33chain 'A' and (resid 129 through 214 )AA129 - 214128 - 211
44chain 'B' and (resid 4 through 20 )BB4 - 201 - 17
55chain 'B' and (resid 21 through 63 )BB21 - 6318 - 60
66chain 'B' and (resid 64 through 86 )BB64 - 8661 - 83
77chain 'B' and (resid 87 through 102 )BB87 - 10284 - 99
88chain 'B' and (resid 103 through 115 )BB103 - 115100 - 112
99chain 'B' and (resid 116 through 131 )BB116 - 131113 - 128
1010chain 'B' and (resid 132 through 157 )BB132 - 157129 - 154
1111chain 'B' and (resid 158 through 200 )BB158 - 200155 - 197
1212chain 'B' and (resid 201 through 226 )BB201 - 226198 - 223
1313chain 'C' and (resid 1 through 10 )CC1 - 10
1414chain 'C' and (resid 11 through 20 )CC11 - 20
1515chain 'C' and (resid 21 through 34 )CC21 - 34
1616chain 'D' and (resid 4 through 20 )DD4 - 201 - 17
1717chain 'D' and (resid 21 through 94 )DD21 - 9418 - 91
1818chain 'D' and (resid 95 through 115 )DD95 - 11592 - 112
1919chain 'D' and (resid 116 through 131 )DD116 - 131113 - 128
2020chain 'D' and (resid 132 through 146 )DD132 - 146129 - 143
2121chain 'D' and (resid 147 through 200 )DD147 - 200144 - 197
2222chain 'D' and (resid 201 through 226 )DD201 - 226198 - 223
2323chain 'E' and (resid 2 through 19 )EE2 - 191 - 18
2424chain 'E' and (resid 20 through 91 )EE20 - 9119 - 90
2525chain 'E' and (resid 92 through 114 )EE92 - 11491 - 113
2626chain 'E' and (resid 115 through 151 )EE115 - 151114 - 150
2727chain 'E' and (resid 152 through 164 )EE152 - 164151 - 163
2828chain 'E' and (resid 165 through 175 )EE165 - 175164 - 174
2929chain 'E' and (resid 176 through 212 )EE176 - 212175 - 211
3030chain 'F' and (resid 1 through 15 )FF1 - 15
3131chain 'F' and (resid 16 through 25 )FF16 - 25
3232chain 'F' and (resid 26 through 34 )FF26 - 34

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