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Crystal structure of anti-HIV antibody PGT128 in complex with a bacterially derived synthetic mimetic of Man9. External Resource: Annotation Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) B [auth H] RuBisCO_large_N e6b3dH1 A: alpha arrays X: Cryptochrome/photolyase FAD-binding domain-related H: Cryptochrome/photolyase FAD-binding domain-related T: Undecaprenyl diphosphate synthase F: RuBisCO_large_N ECOD (v295.2) A [auth L] RuBisCO_large_N e6b3dL1 A: alpha arrays X: Cryptochrome/photolyase FAD-binding domain-related H: Cryptochrome/photolyase FAD-binding domain-related T: Undecaprenyl diphosphate synthase F: RuBisCO_large_N ECOD (v295.2)
Chain Protein Name Description Organism Name Gene Allele Name(s) Domain Name(s) Receptor Type Receptor Description Provenance Source B [auth H] mAb PGT128 , anti-gp120 [HIV-1], broadly neutralizing VH-CH1 Homo sapiens (human) IGHV4-38-2*01, IGHJ1*01, IGHG1*03 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_LAMBDA IMGT (202638-0) A [auth L] mAb PGT128 , anti-gp120 [HIV-1], broadly neutralizing L-LAMBDA Homo sapiens (human) IGLV2-8*01, IGLJ2*01, IGLJ3*01, IGLC2*01, IGLC2*02, IGLC3*04 V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA IG FAB-GAMMA-1_LAMBDA IMGT (202638-0)
Chain Chain Class Chain Subclass Chain Type Antigen Name(s) Provenance Source A [auth L] Light Chain IGLV2 Lambda polysaccharide SAbDab (2026-10-02)
Protein Modification Annotation Modified Residue(s) Chain Residue(s) Description B [auth H] PCA Parent Component: GLN RESID AA0031 PSI-MOD MOD:00040 , 2-pyrrolidone-5-carboxylic acid (Glu) MOD:00420