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- EMDB-7011: The Therapeutic Antibody LM609 Selectively Inhibits Ligand Bindin... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-7011 | |||||||||
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Title | The Therapeutic Antibody LM609 Selectively Inhibits Ligand Binding to Human alpha-V beta-3 Integrin via Steric Hindrance | |||||||||
![]() | The Therapeutic Antibody LM609 Selectively Inhibits Ligand Binding to Human alpha-V beta-3 Integrin via Steric Hindrance | |||||||||
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![]() | alpha-V beta-3 integrin / LM609 / ![]() ![]() | |||||||||
Function / homology | ![]() integrin alphav-beta6 complex / integrin alphav-beta8 complex / transforming growth factor beta production / negative regulation of entry of bacterium into host cell / integrin alphav-beta5 complex / : / ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() | |||||||||
Method | ![]() ![]() | |||||||||
![]() | Borst AJ / James ZN | |||||||||
Funding support | ![]()
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![]() | ![]() Title: The Therapeutic Antibody LM609 Selectively Inhibits Ligand Binding to Human αβ Integrin via Steric Hindrance. Authors: Andrew J Borst / Zachary M James / William N Zagotta / Mark Ginsberg / Felix A Rey / Frank DiMaio / Marija Backovic / David Veesler / ![]() ![]() Abstract: The LM609 antibody specifically recognizes αβ integrin and inhibits angiogenesis, bone resorption, and viral infections in an arginine-glycine-aspartate-independent manner. LM609 entered phase II ...The LM609 antibody specifically recognizes αβ integrin and inhibits angiogenesis, bone resorption, and viral infections in an arginine-glycine-aspartate-independent manner. LM609 entered phase II clinical trials for the treatment of several cancers and was also used for αβ-targeted radioimmunotherapy. To elucidate the mechanisms of recognition and inhibition of αβ integrin, we solved the structure of the LM609 antigen-binding fragment by X-ray crystallography and determined its binding affinity for αβ. Using single-particle electron microscopy, we show that LM609 binds at the interface between the β-propeller domain of the α chain and the βI domain of the β chain, near the RGD-binding site, of all observed integrin conformational states. Integrating these data with fluorescence size-exclusion chromatography, we demonstrate that LM609 sterically hinders access of large ligands to the RGD-binding pocket, without obstructing it. This work provides a structural framework to expedite future efforts utilizing LM609 as a diagnostic or therapeutic tool. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 2.5 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 16.2 KB 16.2 KB | Display Display | ![]() |
Images | ![]() | 23.9 KB | ||
Filedesc metadata | ![]() | 6.9 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6avqMC ![]() 7012C ![]() 7013C ![]() 5opyC ![]() 6avrC ![]() 6avuC C: citing same article ( M: atomic model generated by this map |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | The Therapeutic Antibody LM609 Selectively Inhibits Ligand Binding to Human alpha-V beta-3 Integrin via Steric Hindrance | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 3.2054 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Quaternary complex of human alpha-V beta-3 integrin with the Fab LM609
Entire | Name: Quaternary complex of human alpha-V beta-3 integrin with the Fab LM609 |
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Components |
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-Supramolecule #1: Quaternary complex of human alpha-V beta-3 integrin with the Fab LM609
Supramolecule | Name: Quaternary complex of human alpha-V beta-3 integrin with the Fab LM609 type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 230 KDa |
-Macromolecule #1: Integrin alpha-V
Macromolecule | Name: Integrin alpha-V / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 105.894188 KDa |
Recombinant expression | Organism: ![]() ![]() ![]() |
Sequence | String: FNLDVDSPAE YSGPEGSYFG FAVDFFVPSA SSRMFLLVGA PKANTTQPGI VEGGQVLKCD WSSTRRCQPI EFDATGNRDY AKDDPLEFK SHQWFGASVR SKQDKILACA PLYHWRTEMK QEREPVGTCF LQDGTKTVEY APCRSQDIDA DGQGFCQGGF S IDFTKADR ...String: FNLDVDSPAE YSGPEGSYFG FAVDFFVPSA SSRMFLLVGA PKANTTQPGI VEGGQVLKCD WSSTRRCQPI EFDATGNRDY AKDDPLEFK SHQWFGASVR SKQDKILACA PLYHWRTEMK QEREPVGTCF LQDGTKTVEY APCRSQDIDA DGQGFCQGGF S IDFTKADR VLLGGPGSFY WQGQLISDQV AEIVSKYDPN VYSIKYNNQL ATRTAQAIFD DSYLGYSVAV GDFNGDGIDD FV SGVPRAA RTLGMVYIYD GKNMSSLYNF TGEQMAAYFG FSVAATDING DDYADVFIGA PLFMDRGSDG KLQEVGQVSV SLQ RASGDF QTTKLNGFEV FARFGSAIAP LGDLDQDGFN DIAIAAPYGG EDKKGIVYIF NGRSTGLNAV PSQILEGQWA ARSM PPSFG YSMKGATDID KNGYPDLIVG AFGVDRAILY RARPVITVNA GLEVYPSILN QDNKTCSLPG TALKVSCFNV RFCLK ADGK GVLPRKLNFQ VELLLDKLKQ KGAIRRALFL YSRSPSHSKN MTISRGGLMQ CEELIAYLRD ESEFRDKLTP ITIFME YRL DYRTAADTTG LQPILNQFTP ANISRQAHIL LDCGEDNVCK PKLEVSVDSD QKKIYIGDDN PLTLIVKAQN QGEGAYE AE LIVSIPLQAD FIGVVRNNEA LARLSCAFKT ENQTRQVVCD LGNPMKAGTQ LLAGLRFSVH QQSEMDTSVK FDLQIQSS N LFDKVSPVVS HKVDLAVLAA VEIRGVSSPD HIFLPIPNWE HKENPETEED VGPVVQHIYE LRNNGPSSFS KAMLHLQWP YKYNNNTLLY ILHYDIDGPM NCTSDMEINP LRIKISSLQT TEKNDTVAGQ GERDHLITKR DLALSEGDIH TLGCGVAQCL KIVCQVGRL DRGKSAILYV KSLLWTETFM NKENQNHSYS LKSSASFNVI EFPYKNLPIE DITNSTLVTT NVTWGIQP UniProtKB: ![]() |
-Macromolecule #2: Integrin beta-3
Macromolecule | Name: Integrin beta-3 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 76.523125 KDa |
Recombinant expression | Organism: ![]() ![]() ![]() |
Sequence | String: GPNICTTRGV SSCQQCLAVS PMCAWCSDEA LPLGSPRCDL KENLLKDNCA PESIEFPVSE ARVLEDRPLS DKGSGDSSQV TQVSPQRIA LRLRPDDSKN FSIQVRQVED YPVDIYYLMD LSYSMKDDLW SIQNLGTKLA TQMRKLTSNL RIGFGAFVDK P VSPYMYIS ...String: GPNICTTRGV SSCQQCLAVS PMCAWCSDEA LPLGSPRCDL KENLLKDNCA PESIEFPVSE ARVLEDRPLS DKGSGDSSQV TQVSPQRIA LRLRPDDSKN FSIQVRQVED YPVDIYYLMD LSYSMKDDLW SIQNLGTKLA TQMRKLTSNL RIGFGAFVDK P VSPYMYIS PPEALENPCY DMKTTCLPMF GYKHVLTLTD QVTRFNEEVK KQSVSRNRDA PEGGFDAIMQ ATVCDEKIGW RN DASHLLV FTTDAKTHIA LDGRLAGIVQ PNDGQCHVGS DNHYSASTTM DYPSLGLMTE KLSQKNINLI FAVTENVVNL YQN YSELIP GTTVGVLSMD SSNVLQLIVD AYGKIRSKVE LEVRDLPEEL SLSFNATCLN NEVIPGLKSC MGLKIGDTVS FSIE AKVRG CPQEKEKSFT IKPVGFKDSL IVQVTFDCDC ACQAQAEPNS HRCNNGNGTF ECGVCRCGPG WLGSQCECSE EDYRP SQQD ECSPREGQPV CSQRGECLCG QCVCHSSDFG KITGKYCECD DFSCVRYKGE MCSGHGQCSC GDCLCDSDWT GYYCNC TTR TDTCMSSNGL LCSGRGKCEC GSCVCIQPGS YGDTCEKCPT CPDACTFKKE CVECKKFDRG ALHDENTCNR YCRDEIE SV KELKDTGKDA VNCTYKNEDD CVVRFQYYED SSGKSILYVV EEPECPKGPD UniProtKB: ![]() |
-Macromolecule #3: LM609 Fab heavy chain
Macromolecule | Name: LM609 Fab heavy chain / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() ![]() |
Molecular weight | Theoretical: 27.2231 KDa |
Recombinant expression | Organism: ![]() ![]() ![]() |
Sequence | String: EVQLEESGGG LVKPGGSLKL SCAASGFAFS SYDMSWVRQI PEKRLEWVAK VSSGGGSTYY LDTVQGRFTI SRDNAKNTLY LQMSSLNSE DTAMYYCARH NYGSFAYWGQ GTLVTVSAAK TTPPSVYPLA PGSAAQTNSM VTLGCLVKGY FPEPVTVTWN S GSLSSGVH ...String: EVQLEESGGG LVKPGGSLKL SCAASGFAFS SYDMSWVRQI PEKRLEWVAK VSSGGGSTYY LDTVQGRFTI SRDNAKNTLY LQMSSLNSE DTAMYYCARH NYGSFAYWGQ GTLVTVSAAK TTPPSVYPLA PGSAAQTNSM VTLGCLVKGY FPEPVTVTWN S GSLSSGVH TFPAVLQSDL YTLSSSVTVP SSTWPSETVT CNVAHPASST KVDKKIVPRD CGASDDDDKA GWSHPQFEKG GG SGGGSGG GSWSHPQFEK |
-Macromolecule #4: LM609 Fab light chain
Macromolecule | Name: LM609 Fab light chain / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() ![]() |
Molecular weight | Theoretical: 23.628977 KDa |
Recombinant expression | Organism: ![]() ![]() ![]() |
Sequence | String: ELVMTQTPAT LSVTPGDSVS LSCRASQSIS NHLHWYQQKS HESPRLLIKY ASQSISGIPS RFSGSGSGTD FTLSINSVET EDFGMYFCQ QSNSWPHTFG GGTKLEIKRA DAAPTVSIFP PSSEQLTSGG ASVVCFLNNF YPKDINVKWK IDGSERQNGV L NSWTDQDS ...String: ELVMTQTPAT LSVTPGDSVS LSCRASQSIS NHLHWYQQKS HESPRLLIKY ASQSISGIPS RFSGSGSGTD FTLSINSVET EDFGMYFCQ QSNSWPHTFG GGTKLEIKRA DAAPTVSIFP PSSEQLTSGG ASVVCFLNNF YPKDINVKWK IDGSERQNGV L NSWTDQDS KDSTYSMSST LTLTKDEYER HNSYTCEATH KTSTSPIVKS FNRNEC |
-Experimental details
-Structure determination
Method | ![]() |
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Aggregation state | particle |
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Sample preparation
Buffer | pH: 8 |
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Staining | Type: NEGATIVE / Material: Uranyl formate |
Grid | Model: C-flat 2/0.5 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Pretreatment - Type: GLOW DISCHARGE |
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Electron microscopy
Microscope | FEI TECNAI 12 |
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Electron beam | Acceleration voltage: 120 kV / Electron source: LAB6 |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD![]() |
Image recording | Film or detector model: GATAN ULTRASCAN 4000 (4k x 4k) / Average electron dose: 30.0 e/Å2 |
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Image processing
Startup model | Type of model: RANDOM CONICAL TILT |
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Initial angle assignment | Type: NOT APPLICABLE |
Final angle assignment | Type: NOT APPLICABLE |
Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 35.0 Å / Resolution method: FSC 0.5 CUT-OFF / Number images used: 650 |
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: FLEXIBLE FIT |
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Output model | ![]() PDB-6avq: |