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- PDB-4fnl: Crystal structure of broadly neutralizing antibody C05 -

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Basic information

Entry
Database: PDB / ID: 4fnl
TitleCrystal structure of broadly neutralizing antibody C05
Components
  • Antibody C05, Heavy Chain
  • Antibody C05, Light Chain
KeywordsIMMUNE SYSTEM / Immunoglobulin / immune recognition
Function / homologyImmunoglobulins / Immunoglobulin-like / Sandwich / Mainly Beta
Function and homology information
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.297 Å
AuthorsEkiert, D.C. / Wilson, I.A.
CitationJournal: Nature / Year: 2012
Title: Cross-neutralization of influenza A viruses mediated by a single antibody loop.
Authors: Damian C Ekiert / Arun K Kashyap / John Steel / Adam Rubrum / Gira Bhabha / Reza Khayat / Jeong Hyun Lee / Michael A Dillon / Ryann E O'Neil / Aleksandr M Faynboym / Michael Horowitz / ...Authors: Damian C Ekiert / Arun K Kashyap / John Steel / Adam Rubrum / Gira Bhabha / Reza Khayat / Jeong Hyun Lee / Michael A Dillon / Ryann E O'Neil / Aleksandr M Faynboym / Michael Horowitz / Lawrence Horowitz / Andrew B Ward / Peter Palese / Richard Webby / Richard A Lerner / Ramesh R Bhatt / Ian A Wilson /
Abstract: Immune recognition of protein antigens relies on the combined interaction of multiple antibody loops, which provide a fairly large footprint and constrain the size and shape of protein surfaces that ...Immune recognition of protein antigens relies on the combined interaction of multiple antibody loops, which provide a fairly large footprint and constrain the size and shape of protein surfaces that can be targeted. Single protein loops can mediate extremely high-affinity binding, but it is unclear whether such a mechanism is available to antibodies. Here we report the isolation and characterization of an antibody called C05, which neutralizes strains from multiple subtypes of influenza A virus, including H1, H2 and H3. X-ray and electron microscopy structures show that C05 recognizes conserved elements of the receptor-binding site on the haemagglutinin surface glycoprotein. Recognition of the haemagglutinin receptor-binding site is dominated by a single heavy-chain complementarity-determining region 3 loop, with minor contacts from heavy-chain complementarity-determining region 1, and is sufficient to achieve nanomolar binding with a minimal footprint. Thus, binding predominantly with a single loop can allow antibodies to target small, conserved functional sites on otherwise hypervariable antigens.
History
DepositionJun 19, 2012Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 19, 2012Provider: repository / Type: Initial release
Revision 1.1Oct 3, 2012Group: Database references
Revision 1.2Oct 10, 2012Group: Database references
Revision 2.0Dec 25, 2019Group: Derived calculations / Polymer sequence
Category: entity_poly / pdbx_struct_mod_residue / struct_conn
Item: _entity_poly.pdbx_seq_one_letter_code_can / _pdbx_struct_mod_residue.parent_comp_id / _struct_conn.pdbx_leaving_atom_flag
Revision 2.1May 19, 2021Group: Database references / Derived calculations / Source and taxonomy
Category: entity_src_gen / pdbx_database_related / struct_site
Item: _entity_src_gen.pdbx_host_org_cell_line / _entity_src_gen.pdbx_host_org_strain ..._entity_src_gen.pdbx_host_org_cell_line / _entity_src_gen.pdbx_host_org_strain / _pdbx_database_related.content_type / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 2.2Sep 13, 2023Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
H: Antibody C05, Heavy Chain
L: Antibody C05, Light Chain
I: Antibody C05, Heavy Chain
M: Antibody C05, Light Chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)99,4635
Polymers99,3414
Non-polymers1221
Water9,350519
1
H: Antibody C05, Heavy Chain
L: Antibody C05, Light Chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)49,7923
Polymers49,6702
Non-polymers1221
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area3920 Å2
ΔGint-23 kcal/mol
Surface area19780 Å2
MethodPISA
2
I: Antibody C05, Heavy Chain
M: Antibody C05, Light Chain


Theoretical massNumber of molelcules
Total (without water)49,6702
Polymers49,6702
Non-polymers00
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area3540 Å2
ΔGint-25 kcal/mol
Surface area20080 Å2
MethodPISA
Unit cell
Length a, b, c (Å)160.130, 160.130, 135.520
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number92
Space group name H-MP41212

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Components

#1: Antibody Antibody C05, Heavy Chain


Mass: 26303.262 Da / Num. of mol.: 2 / Fragment: Fab
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK 293 Freestyle / Production host: Homo sapiens (human)
#2: Antibody Antibody C05, Light Chain


Mass: 23367.018 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK 293 Freestyle / Production host: Homo sapiens (human)
#3: Chemical ChemComp-TRS / 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL / TRIS BUFFER / Tris


Mass: 122.143 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C4H12NO3 / Comment: pH buffer*YM
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 519 / 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: 4.37 Å3/Da / Density % sol: 71.87 %
Crystal growTemperature: 277 K / Method: vapor diffusion, sitting drop / pH: 5.4
Details: 1.8 M ammonium sulfate, 100 mM sodium acetate, pH 5.4, 50 mM sodium chloride, VAPOR DIFFUSION, SITTING DROP, temperature 277K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 23-ID-D / Wavelength: 1.033 Å
DetectorType: MARMOSAIC 300 mm CCD / Detector: CCD / Date: Mar 23, 2011
RadiationMonochromator: double crystal Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.033 Å / Relative weight: 1
ReflectionResolution: 2.297→50 Å / Num. obs: 78741 / % possible obs: 99.9 % / Observed criterion σ(I): -3 / Redundancy: 13.2 % / Rsym value: 0.19 / Net I/σ(I): 20.4
Reflection shellResolution: 2.297→2.4 Å / Redundancy: 7.7 % / Mean I/σ(I) obs: 2.2 / Rsym value: 0.8 / % possible all: 99.6

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Processing

Software
NameVersionClassification
Blu-IceEpicsdata collection
PHASERphasing
PHENIX(phenix.refine: 1.7.2_869)refinement
HKL-2000data reduction
XPREPdata reduction
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRIES 1AQK AND 1VGE
Resolution: 2.297→49.219 Å / SU ML: 0.98 / σ(F): 1.34 / Phase error: 25.32 / Stereochemistry target values: ML
RfactorNum. reflection% reflectionSelection details
Rfree0.2401 3937 5.03 %RANDOM
Rwork0.2124 ---
obs0.2138 78237 99.38 %-
Solvent computationShrinkage radii: 0.98 Å / VDW probe radii: 1.2 Å / Solvent model: FLAT BULK SOLVENT MODEL / Bsol: 36.597 Å2 / ksol: 0.331 e/Å3
Displacement parameters
Baniso -1Baniso -2Baniso -3
1--0.9419 Å2-0 Å20 Å2
2---0.9419 Å20 Å2
3---1.8838 Å2
Refinement stepCycle: LAST / Resolution: 2.297→49.219 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6753 0 8 519 7280
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0037001
X-RAY DIFFRACTIONf_angle_d0.9939509
X-RAY DIFFRACTIONf_dihedral_angle_d14.3792532
X-RAY DIFFRACTIONf_chiral_restr0.0721062
X-RAY DIFFRACTIONf_plane_restr0.0051235
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
2.297-2.3250.55691270.53992413X-RAY DIFFRACTION92
2.325-2.35450.42151560.48832585X-RAY DIFFRACTION98
2.3545-2.38540.43011370.42292584X-RAY DIFFRACTION98
2.3854-2.41810.43911290.38422614X-RAY DIFFRACTION99
2.4181-2.45270.43771410.38282619X-RAY DIFFRACTION100
2.4527-2.48930.40511420.32312642X-RAY DIFFRACTION100
2.4893-2.52820.33171230.31042630X-RAY DIFFRACTION100
2.5282-2.56960.34131190.29792661X-RAY DIFFRACTION100
2.5696-2.61390.3271490.29012643X-RAY DIFFRACTION100
2.6139-2.66140.3371420.27122610X-RAY DIFFRACTION99
2.6614-2.71260.3341440.28542584X-RAY DIFFRACTION98
2.7126-2.7680.28831260.22422662X-RAY DIFFRACTION100
2.768-2.82820.24781420.20942632X-RAY DIFFRACTION100
2.8282-2.8940.25491250.20922663X-RAY DIFFRACTION100
2.894-2.96630.23641180.20122689X-RAY DIFFRACTION100
2.9663-3.04650.24691260.20542642X-RAY DIFFRACTION100
3.0465-3.13610.24731580.20172666X-RAY DIFFRACTION100
3.1361-3.23730.22611350.20422650X-RAY DIFFRACTION100
3.2373-3.3530.26191490.21542658X-RAY DIFFRACTION100
3.353-3.48720.251570.22742654X-RAY DIFFRACTION100
3.4872-3.64590.22071530.19872661X-RAY DIFFRACTION100
3.6459-3.83810.23351340.19262677X-RAY DIFFRACTION100
3.8381-4.07840.21171610.18092653X-RAY DIFFRACTION100
4.0784-4.39310.16531400.14522698X-RAY DIFFRACTION100
4.3931-4.83490.15051410.12742729X-RAY DIFFRACTION100
4.8349-5.53370.15941600.14932717X-RAY DIFFRACTION100
5.5337-6.96870.21541570.19112750X-RAY DIFFRACTION100
6.9687-49.23040.20771460.20292914X-RAY DIFFRACTION100
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)
10.9712-0.0530.09922.50930.23810.9578-0.0136-0.01040.04250.00390.01650.153-0.0024-0.28350.03470.0825-0.0504-0.01260.12650.01260.146242.3697-23.384330.2828
22.96020.27140.24272.20620.37063.03110.1545-0.2832-0.32410.24310.0458-0.41890.15980.3388-0.05360.1873-0.031-0.07690.1928-0.0260.260565.3028-42.296845.0962
34.36180.08482.63274.05780.68116.22230.1075-0.6461-0.01530.3349-0.058-0.13310.01650.03340.01410.2018-0.0463-0.0350.2275-0.02930.176961.3557-42.118247.1932
42.4916-0.86211.21233.10960.34831.88950.1339-0.8657-0.42110.5916-0.1764-0.38840.42520.1588-0.01880.3946-0.159-0.04520.53280.16610.353459.3653-49.194850.7578
55.4107-1.16813.49461.3135-1.18624.8281-0.04220.29110.0835-0.1572-0.071-0.1263-0.21290.39320.05990.1416-0.02740.03790.13730.01020.157567.5591-11.301629.6127
62.842-0.84760.52151.9203-1.08824.04350.05670.17210.1659-0.3753-0.0963-0.22370.0195-0.09630.02390.1496-0.02580.01380.08420.01290.115955.786-8.156626.7483
73.21340.05541.95836.24-0.71963.94920.0322-0.1697-0.0010.3111-0.2672-0.0894-0.06090.1120.19880.1249-0.01960.05630.19610.01070.155155.9655-10.699239.2374
82.5128-0.26671.50270.8933-0.11572.27110.0292-0.0485-0.04060.0190.09690.0615-0.10520.0838-0.0990.1878-0.04970.00630.15750.03370.160460.154-10.756131.3082
94.9811-5.62465.61536.3403-6.32616.43140.21760.1861-0.20350.1423-0.05270.09060.11670.21440.01540.1446-0.01870.00160.2152-0.03150.171976.2706-21.652641.3122
102.64662.42341.72473.02923.21044.40020.3891-0.1269-0.58130.3109-0.10450.09331.0015-0.0816-0.20180.36660.021-0.17910.17810.02320.685871.6199-51.78245.559
111.4575-0.2841-0.15721.02460.16131.46030.06180.2449-0.6912-0.28280.2356-0.0474-0.00570.0626-0.15210.23570.0292-0.04670.252-0.1140.344878.7085-39.173540.6184
124.7646-3.4018-1.17434.95581.22790.92920.06590.1219-0.6815-0.170.2733-0.66230.3250.5753-0.28120.33790.0627-0.03960.3762-0.14680.556380.1533-46.030834.6189
137.3849-0.4874-0.51482.58942.99224.3355-0.03240.0611-0.4267-0.04320.02210.5686-0.3465-0.41250.02460.18950.01140.00740.2285-0.03460.247370.9996-26.006544.3442
140.45990.0750.36291.15770.49870.5490.2270.0465-0.9996-0.03760.055-0.38160.2970.2756-0.02570.23880.1177-0.12060.1783-0.08080.632781.6511-48.456342.1477
151.831-0.6851-0.07172.2546-0.05661.38580.0776-0.12590.01010.159-0.00450.26110.0867-0.57630.03270.1555-0.04270.06170.42740.06190.244541.5592-22.08566.86
163.6277-0.129-0.10422.93261.02793.9296-0.1016-0.24460.510.07060.1880.3773-0.4324-0.2332-0.0810.28030.08160.0970.2942-0.01130.429935.57517.048152.3531
175.73180.4148-0.35245.1922-1.17926.21450.04250.00580.0565-0.47130.12540.5925-0.024-0.2098-0.15360.29030.12260.03020.357-0.00870.451431.18373.999248.4774
181.18851.0341-0.60156.0451-3.91474.95110.0342-0.28770.1110.41630.01560.0081-0.48330.2438-0.06220.2164-0.03180.03040.3095-0.04760.21264.2003-5.747867.4862
191.0426-0.44171.33793.6556-2.33484.8507-0.053-0.25190.01430.06920.1911-0.0742-0.0273-0.418-0.1170.1674-0.01620.03810.32920.03620.191461.3709-17.614870.3741
206.321-1.2015-0.73564.5213-1.72144.3046-0.07940.00220.1088-0.23960.00880.1254-0.075-0.17720.05590.1597-0.05130.00150.1678-0.03020.09759.2011-16.23757.8708
210.45030.1977-0.18993.2796-1.76772.99060.0399-0.04990.06620.0740.14210.1344-0.1643-0.12-0.14680.1725-0.01950.00610.33740.01020.180661.1579-12.525565.8138
220.7449-1.99382.37485.329-6.34857.57370.0781-0.07040.1150.2457-0.02770.2685-0.2107-0.0650.03540.24590.00470.04880.2009-0.03080.16959.18226.823255.8078
234.6725-0.479-4.57531.57660.37715.6741-0.01210.41340.3130.01330.02330.8674-0.2764-0.9672-0.08110.39810.19940.10860.4829-0.01090.851530.422117.108752.27
242.2165-1.59810.11192.63970.68420.52790.0018-0.52650.21840.32410.14390.3873-0.1663-0.15960.2990.45240.13170.33650.2654-0.18330.249145.027617.198356.8854
252.4505-1.8336-0.54358.15411.4312.0995-0.1269-0.40920.77270.47980.2350.8663-0.8643-0.1191-0.07540.75660.10390.12890.4662-0.12070.606139.790221.533563.0795
262.9977-1.0114-0.510.72410.75831.76870.0406-0.17110.4080.31050.09440.566-0.3281-0.2065-0.01640.47680.11770.20350.31-0.02260.639341.539619.695754.9723
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection details
1X-RAY DIFFRACTION1chain 'H' and (resseq 2:119)
2X-RAY DIFFRACTION2chain 'H' and (resseq 120:175)
3X-RAY DIFFRACTION3chain 'H' and (resseq 176:203)
4X-RAY DIFFRACTION4chain 'H' and (resseq 204:214)
5X-RAY DIFFRACTION5chain 'L' and (resseq 1:25)
6X-RAY DIFFRACTION6chain 'L' and (resseq 26:38)
7X-RAY DIFFRACTION7chain 'L' and (resseq 39:61)
8X-RAY DIFFRACTION8chain 'L' and (resseq 62:101)
9X-RAY DIFFRACTION9chain 'L' and (resseq 102:113)
10X-RAY DIFFRACTION10chain 'L' and (resseq 114:128)
11X-RAY DIFFRACTION11chain 'L' and (resseq 129:150)
12X-RAY DIFFRACTION12chain 'L' and (resseq 151:163)
13X-RAY DIFFRACTION13chain 'L' and (resseq 164:174)
14X-RAY DIFFRACTION14chain 'L' and (resseq 175:213)
15X-RAY DIFFRACTION15chain 'I' and (resseq 2:119)
16X-RAY DIFFRACTION16chain 'I' and (resseq 120:175)
17X-RAY DIFFRACTION17chain 'I' and (resseq 176:213)
18X-RAY DIFFRACTION18chain 'M' and (resseq 1:25)
19X-RAY DIFFRACTION19chain 'M' and (resseq 26:38)
20X-RAY DIFFRACTION20chain 'M' and (resseq 39:61)
21X-RAY DIFFRACTION21chain 'M' and (resseq 62:101)
22X-RAY DIFFRACTION22chain 'M' and (resseq 102:113)
23X-RAY DIFFRACTION23chain 'M' and (resseq 114:128)
24X-RAY DIFFRACTION24chain 'M' and (resseq 129:150)
25X-RAY DIFFRACTION25chain 'M' and (resseq 151:163)
26X-RAY DIFFRACTION26chain 'M' and (resseq 164:213)

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