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- PDB-7th2: Single-domain VHH intrabodies neutralize ricin toxin -

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ID or keywords:

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Basic information

Entry
Database: PDB / ID: 7th2
TitleSingle-domain VHH intrabodies neutralize ricin toxin
Components
  • Ricin A chain
  • VHH antibody
KeywordsIMMUNE SYSTEM/TOXIN / Antibody-antigen complex / IMMUNE SYSTEM / IMMUNE SYSTEM-TOXIN complex
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
Ribosome-inactivating protein conserved site / Shiga/ricin ribosomal inactivating toxins active site signature. / Ricin-type beta-trefoil lectin domain / 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 ...Ribosome-inactivating protein conserved site / Shiga/ricin ribosomal inactivating toxins active site signature. / Ricin-type beta-trefoil lectin domain / 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
Similarity search - Domain/homology
Biological speciesRicinus communis (castor bean)
Vicugna pacos (alpaca)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.838 Å
AuthorsRudolph, M.J. / Mantis, N.
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.Biol.Chem. / Year: 2022
Title: Single-domain antibodies neutralize ricin toxin intracellularly by blocking access to ribosomal P-stalk proteins.
Authors: Czajka, T.F. / Vance, D.J. / Davis, S. / Rudolph, M.J. / Mantis, N.J.
History
DepositionJan 10, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 12, 2022Provider: repository / Type: Initial release
Revision 1.1Oct 18, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model / struct_ncs_dom_lim
Item: _struct_ncs_dom_lim.beg_auth_comp_id / _struct_ncs_dom_lim.beg_label_asym_id ..._struct_ncs_dom_lim.beg_auth_comp_id / _struct_ncs_dom_lim.beg_label_asym_id / _struct_ncs_dom_lim.beg_label_comp_id / _struct_ncs_dom_lim.beg_label_seq_id / _struct_ncs_dom_lim.end_auth_comp_id / _struct_ncs_dom_lim.end_label_asym_id / _struct_ncs_dom_lim.end_label_comp_id / _struct_ncs_dom_lim.end_label_seq_id

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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
D: VHH antibody
hetero molecules


Theoretical massNumber of molelcules
Total (without water)90,35932
Polymers88,8124
Non-polymers1,54728
Water9,764542
1
A: Ricin A chain
C: VHH antibody
hetero molecules


Theoretical massNumber of molelcules
Total (without water)45,08715
Polymers44,4062
Non-polymers68113
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area3690 Å2
ΔGint-115 kcal/mol
Surface area17750 Å2
MethodPISA
2
B: Ricin A chain
D: VHH antibody
hetero molecules


Theoretical massNumber of molelcules
Total (without water)45,27217
Polymers44,4062
Non-polymers86615
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area3790 Å2
ΔGint-104 kcal/mol
Surface area17680 Å2
MethodPISA
Unit cell
Length a, b, c (Å)60.644, 63.812, 99.298
Angle α, β, γ (deg.)90.000, 107.120, 90.000
Int Tables number4
Space group name H-MP1211
Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
11(chain A and (resid -1 through 84 or resid 86...
21(chain B and (resid -1 through 84 or resid 86...
12(chain C and (resid 3 through 48 or resid 50 through 104 or resid 106 through 124))
22(chain D and (resid 3 through 48 or resid 50 through 104 or resid 106 through 124))

NCS domain segments:
Dom-IDComponent-IDEns-IDBeg auth comp-IDBeg label comp-IDEnd auth comp-IDEnd label comp-IDSelection detailsAuth asym-IDLabel asym-IDAuth seq-IDLabel seq-ID
111ALAALATYRTYR(chain A and (resid -1 through 84 or resid 86...AA-1 - 841 - 86
121ALAALATYRTYR(chain A and (resid -1 through 84 or resid 86...AA86 - 12388 - 125
131ARGARGGLYGLY(chain A and (resid -1 through 84 or resid 86...AA125 - 158127 - 160
141GLNGLNARGARG(chain A and (resid -1 through 84 or resid 86...AA160 - 258162 - 260
211ALAALATYRTYR(chain B and (resid -1 through 84 or resid 86...BB-1 - 841 - 86
221ALAALATYRTYR(chain B and (resid -1 through 84 or resid 86...BB86 - 12388 - 125
231ARGARGGLYGLY(chain B and (resid -1 through 84 or resid 86...BB125 - 158127 - 160
241GLNGLNARGARG(chain B and (resid -1 through 84 or resid 86...BB160 - 258162 - 260
112GLNGLNSERSER(chain C and (resid 3 through 48 or resid 50 through 104 or resid 106 through 124))CC3 - 483 - 48
122ILEILEVALVAL(chain C and (resid 3 through 48 or resid 50 through 104 or resid 106 through 124))CC50 - 10450 - 104
132THRTHRSERSER(chain C and (resid 3 through 48 or resid 50 through 104 or resid 106 through 124))CC106 - 124106 - 124
212GLNGLNSERSER(chain D and (resid 3 through 48 or resid 50 through 104 or resid 106 through 124))DD3 - 483 - 48
222ILEILEVALVAL(chain D and (resid 3 through 48 or resid 50 through 104 or resid 106 through 124))DD50 - 10450 - 104
232THRTHRSERSER(chain D and (resid 3 through 48 or resid 50 through 104 or resid 106 through 124))DD106 - 124106 - 124

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 / rRNA N-glycosidase


Mass: 30139.027 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Ricinus communis (castor bean) / Production host: Escherichia coli (E. coli) / Strain (production host): 'BL21-Gold(DE3)pLysS AG' / References: UniProt: P02879, rRNA N-glycosylase
#2: Antibody VHH antibody


Mass: 14266.763 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) / Strain (production host): 'BL21-Gold(DE3)pLysS AG'

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Non-polymers , 5 types, 570 molecules

#3: Chemical...
ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 21 / Source method: obtained synthetically / Formula: Cl
#4: Chemical ChemComp-MES / 2-(N-MORPHOLINO)-ETHANESULFONIC ACID


Mass: 195.237 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C6H13NO4S / Comment: pH buffer*YM
#5: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: SO4
#6: Chemical ChemComp-EDO / 1,2-ETHANEDIOL / ETHYLENE GLYCOL


Mass: 62.068 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C2H6O2
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 542 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestN

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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: 2.07 Å3/Da / Density % sol: 40.51 %
Crystal growTemperature: 298 K / Method: vapor diffusion / pH: 6.5
Details: 100 mM MES pH 6.5, 200 mM sodium thiocyanate, 8% dioxane, 1740 mM ammonium sulfate

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 24-ID-E / Wavelength: 0.979 Å
DetectorType: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Jun 26, 2020
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.979 Å / Relative weight: 1
ReflectionResolution: 1.83→50 Å / Num. obs: 61630 / % possible obs: 98 % / Redundancy: 6.1 % / Rmerge(I) obs: 0.115 / Rpim(I) all: 0.051 / Rrim(I) all: 0.126 / Χ2: 1.369 / Net I/σ(I): 8.5 / Num. measured all: 372877
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsNum. unique obsCC1/2Rpim(I) allRrim(I) allΧ2% possible all
1.83-1.866.10.90730230.8410.3920.9910.43696.8
1.86-1.96.10.74330040.870.3230.8120.49796.8
1.9-1.9360.6130660.9130.2660.6670.57498.5
1.93-1.976.10.47730660.930.2090.5220.60998.1
1.97-2.016.20.4130800.9570.1790.4490.65898.3
2.01-2.0660.34931020.9580.1540.3830.74899
2.06-2.1160.330620.9650.1340.3290.75298.6
2.11-2.175.90.24130980.9760.1080.2650.84298.5
2.17-2.235.60.21830880.9630.10.2410.9598.2
2.23-2.315.30.17728890.980.0840.1971.08392.3
2.31-2.396.30.17830700.9850.0780.1941.01198.6
2.39-2.486.50.15931290.9880.0680.1731.10199.1
2.48-2.66.40.14331150.9880.0620.1561.31299.1
2.6-2.736.20.12831380.9880.0570.1411.53999.1
2.73-2.96.10.11130910.990.0490.1221.83198.8
2.9-3.135.90.09231050.9930.0420.1012.23898.8
3.13-3.445.40.07529960.9930.0360.0842.71594.8
3.44-3.946.40.06331790.9960.0270.0692.92299.7
3.94-4.976.20.05331500.9960.0230.0582.84499.2
4.97-506.10.04631790.9980.020.0512.52497.3

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Processing

Software
NameVersionClassification
SCALEPACKdata scaling
PHENIX1.11.1_2575refinement
PDB_EXTRACT3.27data extraction
HKL-2000data reduction
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1RTC, 4LGR
Resolution: 1.838→47.449 Å / SU ML: 0.16 / Cross valid method: THROUGHOUT / σ(F): 1.4 / Phase error: 17.89 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.1874 3189 5.18 %
Rwork0.1487 58396 -
obs0.1507 61585 97.35 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso max: 153.55 Å2 / Biso mean: 31.9007 Å2 / Biso min: 8.23 Å2
Refinement stepCycle: final / Resolution: 1.838→47.449 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6034 0 106 542 6682
Biso mean--54.85 35.11 -
Num. residues----773
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0086265
X-RAY DIFFRACTIONf_angle_d0.9118529
X-RAY DIFFRACTIONf_chiral_restr0.054930
X-RAY DIFFRACTIONf_plane_restr0.0071117
X-RAY DIFFRACTIONf_dihedral_angle_d11.043726
Refine LS restraints NCS
Ens-IDDom-IDAuth asym-IDNumberRefine-IDRmsType
11A3116X-RAY DIFFRACTION7.659TORSIONAL
12B3116X-RAY DIFFRACTION7.659TORSIONAL
21C1354X-RAY DIFFRACTION7.659TORSIONAL
22D1354X-RAY DIFFRACTION7.659TORSIONAL
LS refinement shell

Refine-ID: X-RAY DIFFRACTION / Rfactor Rfree error: 0

Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection Rwork% reflection obs (%)
1.838-1.86520.2441270.1929211183
1.8652-1.89440.22621470.1752248796
1.8944-1.92540.22341360.1711253998
1.9254-1.95860.21431640.1543254198
1.9586-1.99420.1961220.1573254299
1.9942-2.03260.24161480.154255598
2.0326-2.07410.19211420.1531258199
2.0741-2.11920.17721360.1462254299
2.1192-2.16850.16951360.143256198
2.1685-2.22270.19331310.1455257299
2.2227-2.28280.1851510.1401245995
2.2828-2.350.20171340.1456243495
2.35-2.42580.18131340.1454260599
2.4258-2.51250.2011280.1514259999
2.5125-2.61310.17691350.1454257899
2.6131-2.7320.16021220.1505258399
2.732-2.87610.1841280.1496261599
2.8761-3.05620.20491330.1534259099
3.0562-3.29210.20451540.1532248596
3.2921-3.62330.17161530.1417253197
3.6233-4.14740.181550.13412619100
4.1474-5.22420.14971480.1269261999
5.2242-47.4490.2131250.1777264897
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)
11.1228-0.6222-0.70381.27480.45530.50320.0537-0.1370.13510.03250.0033-0.1615-0.0862-0.0635-0.0340.1328-0.0071-0.00040.1290.00770.148-41.6903-4.004982.6405
24.0951.75932.67552.52612.39834.7541-0.0918-0.09630.20790.0027-0.04160.0918-0.1794-0.21840.14430.08590.0040.0190.07540.00610.1055-48.7732-5.116287.9982
33.8092-0.0946-1.19133.96830.34792.22530.1319-0.1450.18040.3689-0.01740.2644-0.1506-0.2127-0.04480.13280.01120.03280.14210.01460.1456-55.6487-7.595595.3284
41.9153-0.4353-0.30280.8269-0.30371.3692-0.07150.0811-0.3073-0.0547-0.02190.15370.2059-0.23180.10450.1299-0.03880.01160.1281-0.0280.1737-50.9172-21.099482.696
52.2152-0.00140.31593.150.40382.5735-0.0966-0.258-0.18280.24930.0631-0.19530.24110.27590.02630.16280.0402-0.00340.17250.0510.1579-30.1585-22.200891.5513
61.39170.65760.54692.71271.29972.08170.09970.2858-0.3308-0.1396-0.0747-0.02490.0738-0.3416-0.0840.13040.0032-0.02550.2013-0.0320.1401-30.8791-5.577259.5686
74.95372.47861.98593.3431.9293.171-0.01540.4462-0.4477-0.32110.0879-0.60970.13960.3566-0.06110.31640.01550.07060.4615-0.00710.2876-19.6025-0.282145.9103
83.3335-1.20490.0221.79390.0632.42880.12710.75680.0402-0.3616-0.11210.07610.1229-0.16670.02740.18180.0043-0.02660.36090.02650.1346-39.84461.777149.2498
93.1193-0.0655-0.12220.7566-0.17831.3195-0.06660.12770.61260.03840.05820.0282-0.1882-0.22630.03650.16180.0281-0.00830.14730.03860.2149-36.286511.648662.2309
101.77590.0281.08592.25980.08430.627-0.04040.71980.6645-0.365-0.0325-0.3901-0.2770.3426-0.05450.2421-0.0540.03410.33730.15280.4084-15.366616.045253.8002
112.68111.7091-0.36355.3129-1.64747.1644-0.04660.7704-0.2053-0.32950.00860.610.4763-0.42130.15120.2249-0.0463-0.03870.2166-0.11090.2443-26.9224-22.609860.733
126.01360.32643.05891.95020.67293.2897-0.05790.19940.3509-0.1569-0.0523-0.056-0.11110.28760.08890.1321-0.01590.02330.1340.01620.1261-11.5574-17.704464.1149
134.5699-2.14281.36262.7748-1.43724.93470.0022-0.1395-0.3004-0.04470.06360.3307-0.0984-0.3396-0.05180.0986-0.02830.00930.0692-0.03660.1351-26.0081-21.060668.4388
143.712-3.365-2.96636.03274.25553.2287-0.1692-0.3274-0.46020.03310.06490.03090.63130.40920.01240.26870.06890.01980.13330.01490.2497-16.7038-28.704573.2186
152.8401-4.5633-0.14698.00650.13735.8577-0.0182-0.33550.04830.13960.07180.1427-0.03470.2702-0.07390.1311-0.01780.02260.1066-0.00210.1413-21.4373-17.514578.8197
167.63-3.89936.59284.0383-2.83167.848-0.1111-0.01310.05590.01420.1459-0.0305-0.2330.00860.01970.11-0.0250.0220.1052-0.01750.1125-19.0144-13.910969.8358
175.94051.4683-1.21460.83190.11551.0883-0.0468-0.0962-0.18090.1440.0514-0.03310.01850.10070.02750.14140.02880.00780.07930.00420.1479-18.0443-24.714172.8829
185.67730.2087-0.97735.8712-0.11268.0879-0.09620.0849-0.62380.07590.06680.53160.6126-0.50840.16350.1517-0.03760.01860.1022-0.06680.2617-27.0858-28.983468.1712
191.99-0.3685-2.25344.5754-0.92572.9645-0.29480.6713-0.68650.1440.1761-0.6754-0.03620.94180.12090.1783-0.01760.01340.4138-0.06040.2745-0.5305-23.163764.7216
205.1629-0.2480.79714.0811-0.0484.3497-0.0982-0.0098-0.26990.11830.02250.20260.1582-0.12210.09590.1314-0.0049-0.010.10540.02220.11230.92893.3279.4443
210.851-0.7931-0.87123.8256-2.05383.56560.7068-1.777-0.87270.774-0.67610.31550.5797-0.5155-0.21320.2955-0.1576-0.04310.51470.0960.345-18.43692.311777.1874
225.77794.07921.53175.90730.38362.0766-0.121-0.2320.82090.2697-0.1260.2193-0.0896-0.07440.11390.11860.0093-0.01910.0792-0.02420.1705-4.429611.829375.1715
231.73061.81053.22551.96833.37426.0188-0.3045-0.16690.8278-0.0611-0.3214-0.11-0.90870.05910.35960.3212-0.0588-0.12730.1496-0.03240.4769-2.019516.129973.9507
245.57640.73222.35631.61070.8823.2581-0.07840.46210.21750.0116-0.0260.0273-0.08340.26530.07130.14370.0029-0.01130.15260.03110.1732-4.19067.565764.6763
254.4166-1.2697-1.33131.9463-1.27656.40320.09490.0008-0.4521-0.0440.06530.19990.6277-0.3070.00390.2244-0.0237-0.02880.17050.01760.2355-5.7006-0.102172.9333
267.6703-1.63360.44491.52751.07822.3566-0.1099-0.12840.3604-0.03230.0227-0.1106-0.09320.180.08510.1507-0.0233-0.00640.1060.01780.15883.100110.325375.5217
276.904-0.3996-0.72372.9856-1.81874.9705-0.18390.04240.6686-0.1887-0.1846-0.1064-0.27160.1050.28060.1870.0222-0.06710.1184-0.00980.2598-13.228815.288668.0047
282.83040.2888-0.96744.04052.25112.3304-0.2135-0.70530.31310.1159-0.09330.319-0.7524-0.5813-0.14190.19990.071-0.02670.2768-0.12220.2518-12.175514.585478.6472
294.5473-0.6019-1.36817.591-0.5486.2391-0.1948-0.57750.4621-0.07510.1361-0.47270.05570.89540.03720.11820.0037-0.02890.2124-0.01950.15789.43148.949381.2352
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection detailsAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1chain 'A' and (resid -1 through 44 )A-1 - 44
2X-RAY DIFFRACTION2chain 'A' and (resid 45 through 75 )A45 - 75
3X-RAY DIFFRACTION3chain 'A' and (resid 76 through 122 )A76 - 122
4X-RAY DIFFRACTION4chain 'A' and (resid 123 through 201 )A123 - 201
5X-RAY DIFFRACTION5chain 'A' and (resid 202 through 258 )A202 - 258
6X-RAY DIFFRACTION6chain 'B' and (resid -1 through 33 )B-1 - 33
7X-RAY DIFFRACTION7chain 'B' and (resid 34 through 56 )B34 - 56
8X-RAY DIFFRACTION8chain 'B' and (resid 57 through 122 )B57 - 122
9X-RAY DIFFRACTION9chain 'B' and (resid 123 through 201 )B123 - 201
10X-RAY DIFFRACTION10chain 'B' and (resid 202 through 261 )B202 - 261
11X-RAY DIFFRACTION11chain 'C' and (resid 1 through 7 )C1 - 7
12X-RAY DIFFRACTION12chain 'C' and (resid 8 through 25 )C8 - 25
13X-RAY DIFFRACTION13chain 'C' and (resid 26 through 38 )C26 - 38
14X-RAY DIFFRACTION14chain 'C' and (resid 39 through 50 )C39 - 50
15X-RAY DIFFRACTION15chain 'C' and (resid 51 through 63 )C51 - 63
16X-RAY DIFFRACTION16chain 'C' and (resid 64 through 82 )C64 - 82
17X-RAY DIFFRACTION17chain 'C' and (resid 83 through 107 )C83 - 107
18X-RAY DIFFRACTION18chain 'C' and (resid 108 through 117 )C108 - 117
19X-RAY DIFFRACTION19chain 'C' and (resid 118 through 128 )C118 - 128
20X-RAY DIFFRACTION20chain 'D' and (resid 3 through 24 )D3 - 24
21X-RAY DIFFRACTION21chain 'D' and (resid 25 through 31 )D25 - 31
22X-RAY DIFFRACTION22chain 'D' and (resid 32 through 38 )D32 - 38
23X-RAY DIFFRACTION23chain 'D' and (resid 39 through 50 )D39 - 50
24X-RAY DIFFRACTION24chain 'D' and (resid 51 through 66 )D51 - 66
25X-RAY DIFFRACTION25chain 'D' and (resid 67 through 82 )D67 - 82
26X-RAY DIFFRACTION26chain 'D' and (resid 83 through 98 )D83 - 98
27X-RAY DIFFRACTION27chain 'D' and (resid 99 through 107 )D99 - 107
28X-RAY DIFFRACTION28chain 'D' and (resid 108 through 117 )D108 - 117
29X-RAY DIFFRACTION29chain 'D' and (resid 118 through 124 )D118 - 124

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