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- PDB-6obo: Ricin A chain bound to VHH antibody V6A6 -

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Basic information

Entry
Database: PDB / ID: 6obo
TitleRicin A chain bound to VHH antibody V6A6
Components
  • Ricin A chain
  • VHH antibody V6A6
KeywordsTOXIN
Function / homology
Function and homology information


rRNA N-glycosylase / rRNA N-glycosylase activity / AMP binding / defense response / toxin activity / carbohydrate binding / killing of cells of another organism / negative regulation of translation
Similarity search - Function
Ricin (A Subunit), domain 2 / Ricin (A Subunit), domain 2 / Ricin (A subunit); domain 1 / Ricin (A subunit), domain 1 / Ricin-type beta-trefoil lectin domain / Ribosome-inactivating protein conserved site / Shiga/ricin ribosomal inactivating toxins active site signature. / Ribosome-inactivating protein type 1/2 / Ribosome-inactivating protein / Ribosome-inactivating protein, subdomain 1 ...Ricin (A Subunit), domain 2 / Ricin (A Subunit), domain 2 / Ricin (A subunit); domain 1 / Ricin (A subunit), domain 1 / Ricin-type beta-trefoil lectin domain / Ribosome-inactivating protein conserved site / Shiga/ricin ribosomal inactivating toxins active site signature. / Ribosome-inactivating protein type 1/2 / Ribosome-inactivating protein / Ribosome-inactivating protein, subdomain 1 / Ribosome-inactivating protein, subdomain 2 / Ribosome-inactivating protein superfamily / Ribosome inactivating protein / Ricin-type beta-trefoil / Lectin domain of ricin B chain profile. / Ricin B, lectin domain / Ricin B-like lectins / Few Secondary Structures / Irregular / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
Biological speciesRicinus communis (castor bean)
Vicugna pacos (alpaca)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / molecular replacement / Resolution: 1.9 Å
AuthorsRudolph, M.J.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)HHSN272201400021C United States
CitationJournal: J.Mol.Biol. / Year: 2020
Title: Intracellular Neutralization of Ricin Toxin by Single-domain Antibodies Targeting the Active Site.
Authors: Rudolph, M.J. / Czajka, T.F. / Davis, S.A. / Thi Nguyen, C.M. / Li, X.P. / Tumer, N.E. / Vance, D.J. / Mantis, N.J.
History
DepositionMar 21, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 1, 2020Provider: repository / Type: Initial release
Revision 1.1Oct 14, 2020Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Ricin A chain
B: Ricin A chain
C: VHH antibody V6A6
D: VHH antibody V6A6
hetero molecules


Theoretical massNumber of molelcules
Total (without water)84,22415
Polymers83,5974
Non-polymers62711
Water15,006833
1
A: Ricin A chain
C: VHH antibody V6A6
hetero molecules


Theoretical massNumber of molelcules
Total (without water)42,0817
Polymers41,7992
Non-polymers2825
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: Ricin A chain
D: VHH antibody V6A6
hetero molecules


Theoretical massNumber of molelcules
Total (without water)42,1438
Polymers41,7992
Non-polymers3446
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)123.242, 112.929, 93.081
Angle α, β, γ (deg.)90.000, 127.490, 90.000
Int Tables number5
Space group name H-MC121
Components on special symmetry positions
IDModelComponents
11B-967-

HOH

Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
11(chain C and (resid 2 through 29 or resid 31 through 94 or resid 96 through 120))
21(chain D and (resid 2 through 29 or resid 31 through 94 or resid 96 through 120))
12(chain A and (resid 5 through 71 or resid 73...
22(chain B and (resid 5 through 71 or resid 73...

NCS domain segments:
Dom-IDComponent-IDEns-IDSelection detailsAuth asym-IDAuth seq-ID
111(chain C and (resid 2 through 29 or resid 31 through 94 or resid 96 through 120))C2 - 29
121(chain C and (resid 2 through 29 or resid 31 through 94 or resid 96 through 120))C31 - 94
131(chain C and (resid 2 through 29 or resid 31 through 94 or resid 96 through 120))C96 - 120
211(chain D and (resid 2 through 29 or resid 31 through 94 or resid 96 through 120))D2 - 29
221(chain D and (resid 2 through 29 or resid 31 through 94 or resid 96 through 120))D31 - 94
231(chain D and (resid 2 through 29 or resid 31 through 94 or resid 96 through 120))D96 - 120
112(chain A and (resid 5 through 71 or resid 73...A5 - 71
122(chain A and (resid 5 through 71 or resid 73...A73 - 118
132(chain A and (resid 5 through 71 or resid 73...A5 - 261
142(chain A and (resid 5 through 71 or resid 73...A5 - 261
152(chain A and (resid 5 through 71 or resid 73...A139 - 205
162(chain A and (resid 5 through 71 or resid 73...A207 - 233
172(chain A and (resid 5 through 71 or resid 73...A235
182(chain A and (resid 5 through 71 or resid 73...A237 - 261
212(chain B and (resid 5 through 71 or resid 73...B5 - 71
222(chain B and (resid 5 through 71 or resid 73...B73 - 118
232(chain B and (resid 5 through 71 or resid 73...B120 - 36
242(chain B and (resid 5 through 71 or resid 73...B5 - 261
252(chain B and (resid 5 through 71 or resid 73...B207 - 233
262(chain B and (resid 5 through 71 or resid 73...B235
272(chain B and (resid 5 through 71 or resid 73...B237 - 261

NCS ensembles :
ID
1
2

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Components

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Protein / Antibody , 2 types, 4 molecules ABCD

#1: Protein Ricin A chain


Mass: 28806.449 Da / Num. of mol.: 2 / Fragment: Toxin catalytic subunit, residues 40-298
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Ricinus communis (castor bean) / Production host: Escherichia coli (E. coli) / References: UniProt: P02879, rRNA N-glycosylase
#2: Antibody VHH antibody V6A6


Mass: 12992.228 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Vicugna pacos (alpaca) / Production host: Escherichia coli (E. coli)

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Non-polymers , 4 types, 844 molecules

#3: Chemical ChemComp-EDO / 1,2-ETHANEDIOL / ETHYLENE GLYCOL / Ethylene glycol


Mass: 62.068 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C2H6O2
#4: Chemical
ChemComp-ACY / ACETIC ACID / Acetic acid


Mass: 60.052 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C2H4O2
#5: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Ca
#6: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 833 / 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: 3.07 Å3/Da / Density % sol: 59.99 %
Crystal growMethod: vapor diffusion / pH: 8
Details: 100 mM imidazole (pH 8.0), 200 mM calcium acetate, and 15% PEG 8,000

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 24-ID-C / Wavelength: 0.979 Å
DetectorType: DECTRIS PILATUS 6M-F / Detector: PIXEL / Date: Mar 23, 2017
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.979 Å / Relative weight: 1
ReflectionResolution: 1.9→50 Å / Num. obs: 79441 / % possible obs: 99.9 % / Redundancy: 5.5 % / Rmerge(I) obs: 0.308 / Rpim(I) all: 0.142 / Rrim(I) all: 0.34 / Χ2: 1.068 / Net I/σ(I): 3.2
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsNum. unique obsCC1/2Rpim(I) allRrim(I) allΧ2% possible all
1.9-1.933.91.35338990.460.7121.5360.45199.4
1.93-1.975.11.63239280.5240.7691.8080.4799.9
1.97-2.015.41.56939950.480.7271.7330.48699.9
2.01-2.055.31.54139500.4190.731.7090.486100
2.05-2.095.51.26339900.5580.581.3940.51100
2.09-2.145.71.06239350.7530.471.1640.54399.9
2.14-2.195.70.89739480.8080.3990.9830.568100
2.19-2.255.60.74839850.8230.340.8230.6199.9
2.25-2.325.50.62239840.8880.2860.6860.65799.9
2.32-2.395.70.59139750.9020.2650.6490.65999.9
2.39-2.485.40.51339310.8760.240.5680.70499.8
2.48-2.585.70.39539930.940.1790.4350.775100
2.58-2.75.80.34539710.9640.1540.3780.84399.9
2.7-2.845.60.27839640.970.1260.3060.99799.9
2.84-3.025.90.24739820.9690.110.271.22499.9
3.02-3.255.50.20139710.9780.0940.2221.45799.9
3.25-3.585.70.15339980.9860.0690.1691.931100
3.58-4.095.70.12939670.990.0590.1422.40699.8
4.09-5.165.30.10740210.990.0510.1192.62199.9
5.16-505.40.10740540.9910.0510.1192.64299.9

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Phasing

PhasingMethod: molecular replacement
Phasing MRModel details: Phaser MODE: MR_AUTO
Highest resolutionLowest resolution
Rotation3 Å48.89 Å
Translation3 Å48.89 Å

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Processing

Software
NameVersionClassification
SCALEPACKdata scaling
PHASER2.7.17phasing
PHENIX(1.11.1_2575)refinement
PDB_EXTRACT3.24data extraction
HKL-2000data reduction
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 1.9→48.894 Å / SU ML: 0.22 / Cross valid method: THROUGHOUT / σ(F): 1.33 / Phase error: 24.58
RfactorNum. reflection% reflection
Rfree0.2438 3954 4.98 %
Rwork0.2071 --
obs0.2089 79403 99.02 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å
Displacement parametersBiso max: 88.33 Å2 / Biso mean: 27.8142 Å2 / Biso min: 2.4 Å2
Refinement stepCycle: final / Resolution: 1.9→48.894 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5872 0 38 833 6743
Biso mean--29.55 40.01 -
Num. residues----754
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.016121
X-RAY DIFFRACTIONf_angle_d1.0578320
X-RAY DIFFRACTIONf_chiral_restr0.063911
X-RAY DIFFRACTIONf_plane_restr0.0071105
X-RAY DIFFRACTIONf_dihedral_angle_d2.9234917
Refine LS restraints NCS
Ens-IDDom-IDAuth asym-IDNumberRefine-IDRmsType
11C1030X-RAY DIFFRACTION7.527TORSIONAL
12D1030X-RAY DIFFRACTION7.527TORSIONAL
21A2354X-RAY DIFFRACTION7.527TORSIONAL
22B2354X-RAY DIFFRACTION7.527TORSIONAL
LS refinement shell

Refine-ID: X-RAY DIFFRACTION / Rfactor Rfree error: 0 / Total num. of bins used: 28

Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkNum. reflection all% reflection obs (%)
1.8944-1.91750.30691080.28732033214176
1.9175-1.94170.35411670.272127412908100
1.9417-1.96730.29281470.254125992746100
1.9673-1.99420.28951550.250927652920100
1.9942-2.02270.29521480.247727102858100
2.0227-2.05290.30371430.252626822825100
2.0529-2.0850.29031560.241227222878100
2.085-2.11920.27011300.228427312861100
2.1192-2.15570.25371400.234426922832100
2.1557-2.19490.24451420.216827042846100
2.1949-2.23710.25281440.210226862830100
2.2371-2.28280.2541500.216727592909100
2.2828-2.33240.2651460.216926812827100
2.3324-2.38670.25741210.219727652886100
2.3867-2.44640.2291270.21227132840100
2.4464-2.51250.26691470.217727332880100
2.5125-2.58650.25491410.209926832824100
2.5865-2.66990.24981420.211727072849100
2.6699-2.76540.26721490.203127092858100
2.7654-2.87610.22331500.203327152865100
2.8761-3.00690.23671440.20327432887100
3.0069-3.16540.25671430.200326912834100
3.1654-3.36370.2291420.190727252867100
3.3637-3.62340.20641340.180327562890100
3.6234-3.98780.20071240.179327482872100
3.9878-4.56450.20151180.166627412859100
4.5645-5.74940.22741390.191327502889100
5.7494-48.91070.23311570.22722765292299
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)
13.42622.5837-0.31458.45522.02231.00050.1719-0.0825-0.03130.6148-0.28730.0701-0.2007-0.15010.12410.21830.0124-0.03720.16170.04170.13781.4056117.052931.8821
21.34890.0815-0.5320.2064-0.52671.57740.03550.07780.3658-0.5026-0.1120.1476-0.4682-0.152-0.10520.3790.05220.02420.18530.06180.20077.9588127.421122.4798
31.98180.9630.06745.7589-0.54323.6509-0.118-0.1022-0.10570.10260.05960.25380.0844-0.16820.00750.20510.0248-0.00970.12970.02670.17275.8383115.371135.2075
42.8282-0.76350.48713.7252-0.95853.28030.1385-0.02120.21860.1506-0.1681-0.2218-0.07350.2348-0.10770.19430.0315-0.01060.1241-0.00260.147916.4994120.356436.4235
52.4581-1.18390.21992.5937-0.11832.1817-0.0498-0.21970.44760.40610.1665-0.2174-0.44860.0219-0.05850.39880.006-0.01830.1315-0.01830.183818.5362122.785641.1222
61.32290.485-0.41591.3589-0.37422.0255-0.0088-0.0317-0.14450.00260.03420.05210.19450.05050.01190.18850.01150.00330.10960.02310.125616.6765106.815131.5405
71.58280.7914-0.56743.0691-0.42012.5064-0.23160.2464-0.0271-0.38870.15080.07340.33950.0314-0.06780.2410.0434-0.01790.15680.02280.1438.817112.869917.6052
81.0110.3369-0.70081.3532-0.99142.1471-0.10580.1484-0.0033-0.14850.09230.05550.133-0.0227-0.00520.25320.0289-0.0090.14780.03160.1117.2464114.051515.991
90.4033-0.3376-0.33572.552-0.42810.5917-0.01160.1690.05590.01880.0136-0.23230.19970.09540.01330.370.01570.01330.21070.05230.1621.8122119.61255.8177
101.99920.4022-0.03882.29510.04931.37030.1080.25360.28930.0722-0.01130.0318-0.34940.2865-0.02890.5242-0.0258-0.01380.26770.06640.181715.4555128.838215.3551
111.2582-0.37830.38280.1653-0.30671.0390.11740.0899-0.2089-0.3165-0.0927-0.01380.30520.1064-0.08470.32560.03220.00150.1656-0.04770.147658.357176.941421.4472
122.0105-0.6295-0.5851.69370.07552.1855-0.0152-0.0561-0.11520.32870.02080.00270.26340.0557-0.00980.30360.0256-0.00360.1008-0.00720.119252.396681.852935.5639
131.230.1060.12940.9960.04642.75460.04240.03470.1487-0.09480.0031-0.0884-0.23840.0618-0.0420.19090.00580.02040.0985-0.01750.12751.116494.165524.1567
140.622-0.1530.12922.50451.72232.1424-0.02090.168-0.0308-0.0713-0.02520.1637-0.0759-0.1380.05290.29640.00410.00630.1816-0.03840.127941.306681.26588.0717
152.5895-0.18220.04672.36831.78792.797-0.01390.2468-0.2936-0.2050.2069-0.10180.9649-0.4595-0.17690.513-0.05690.00190.2912-0.050.174747.894673.120613.3951
163.12681.21910.3861.538-0.66972.66920.29530.41020.3338-0.52440.0805-0.7896-0.53220.2267-0.41030.2075-0.0070.03610.25010.07780.264948.3364116.635712.4395
179.0793-4.9105-0.04622.84320.84454.1293-0.15550.0664-0.0305-0.13250.2034-0.14170.52910.2065-0.02980.2864-0.03550.05690.18630.03080.16945.2804115.496318.541
187.47395.0267-1.69988.0063-2.90782.53740.3162-0.94141.09390.9146-0.13230.1356-0.06281.0593-0.18010.2090.029-0.03660.3164-0.09830.29532.4217119.691628.5193
192.6415-0.57980.32226.3028-3.60795.2234-0.15280.7580.626-0.68070.081-0.1764-0.4309-0.1045-0.07320.353-0.00810.0070.31780.10690.245737.1721119.9326.9438
202.0040.1454-0.36141.21910.43162.7411-0.03240.12-0.0449-0.34570.0654-0.0897-0.18570.0162-0.01910.27050.03340.01360.1301-0.00630.115237.4993109.573315.5621
213.8995-0.796-2.09431.8392-0.55642.8294-0.02450.10720.0656-0.08050.0121-0.105-0.13340.21770.02970.2646-0.0157-0.01870.1650.00650.106636.044117.646813.5237
227.4078-2.0785-5.72495.50852.31426.83360.25990.27830.4814-0.47540.162-0.1393-0.24080.1049-0.31430.2481-0.0127-0.04350.20080.06610.20741.9975121.363311.3326
234.1884-0.66982.0013.1662-2.75256.06470.38260.3729-0.3593-0.41620.01360.67690.6363-0.2139-0.49190.2194-0.0291-0.00370.2367-0.07160.207415.13485.142714.5555
248.31522.99041.19071.58551.50312.7791-0.0502-0.4552-0.57150.0117-0.04420.0333-0.0053-0.10130.1350.20130.02150.04950.1632-0.00650.155426.572784.105124.529
254.4541-0.4843-0.62836.87863.68516.7582-0.16950.8794-0.6064-0.52940.19170.14330.144-0.1414-0.06850.3325-0.0177-0.00090.3079-0.08040.21625.475481.94247.7189
262.0876-0.01761.0511.8959-0.34252.63320.02870.11960.0449-0.2870.05660.0812-0.0003-0.0204-0.11940.29220.03830.00480.1234-0.00590.127826.284692.266116.2716
274.702-1.0051.75821.39170.10981.24520.02930.1714-0.0513-0.024-0.02390.11030.0741-0.1150.060.3349-0.01530.00040.1687-0.01080.118627.523684.209414.1438
287.2688-2.1635.82523.367-1.84784.68050.5639-0.0811-0.9532-0.21530.0155-0.02830.6365-0.0927-0.50940.2124-0.00850.01540.2164-0.05820.340728.026276.542518.312
296.32681.7132-0.24053.59222.87142.76090.42770.95080.2451-1.55660.15781.14830.4422-0.2541-0.45950.4718-0.015-0.10120.43770.01870.364311.748287.45733.4634
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection detailsAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1chain 'A' and (resid 5 through 17 )A5 - 17
2X-RAY DIFFRACTION2chain 'A' and (resid 18 through 56 )A18 - 56
3X-RAY DIFFRACTION3chain 'A' and (resid 57 through 75 )A57 - 75
4X-RAY DIFFRACTION4chain 'A' and (resid 76 through 97 )A76 - 97
5X-RAY DIFFRACTION5chain 'A' and (resid 98 through 122 )A98 - 122
6X-RAY DIFFRACTION6chain 'A' and (resid 123 through 174 )A123 - 174
7X-RAY DIFFRACTION7chain 'A' and (resid 175 through 193 )A175 - 193
8X-RAY DIFFRACTION8chain 'A' and (resid 194 through 219 )A194 - 219
9X-RAY DIFFRACTION9chain 'A' and (resid 220 through 248 )A220 - 248
10X-RAY DIFFRACTION10chain 'A' and (resid 249 through 261 )A249 - 261
11X-RAY DIFFRACTION11chain 'B' and (resid 5 through 56 )B5 - 56
12X-RAY DIFFRACTION12chain 'B' and (resid 57 through 122 )B57 - 122
13X-RAY DIFFRACTION13chain 'B' and (resid 123 through 201 )B123 - 201
14X-RAY DIFFRACTION14chain 'B' and (resid 202 through 248 )B202 - 248
15X-RAY DIFFRACTION15chain 'B' and (resid 249 through 261 )B249 - 261
16X-RAY DIFFRACTION16chain 'C' and (resid 2 through 17 )C2 - 17
17X-RAY DIFFRACTION17chain 'C' and (resid 18 through 25 )C18 - 25
18X-RAY DIFFRACTION18chain 'C' and (resid 26 through 33 )C26 - 33
19X-RAY DIFFRACTION19chain 'C' and (resid 34 through 45 )C34 - 45
20X-RAY DIFFRACTION20chain 'C' and (resid 46 through 82 )C46 - 82
21X-RAY DIFFRACTION21chain 'C' and (resid 83 through 106 )C83 - 106
22X-RAY DIFFRACTION22chain 'C' and (resid 107 through 120 )C107 - 120
23X-RAY DIFFRACTION23chain 'D' and (resid 2 through 17 )D2 - 17
24X-RAY DIFFRACTION24chain 'D' and (resid 18 through 33 )D18 - 33
25X-RAY DIFFRACTION25chain 'D' and (resid 34 through 45 )D34 - 45
26X-RAY DIFFRACTION26chain 'D' and (resid 46 through 82 )D46 - 82
27X-RAY DIFFRACTION27chain 'D' and (resid 83 through 106 )D83 - 106
28X-RAY DIFFRACTION28chain 'D' and (resid 107 through 113 )D107 - 113
29X-RAY DIFFRACTION29chain 'D' and (resid 114 through 122 )D114 - 122

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