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Crystal structure of the anti-PAS Fab 1.2 in complex with its epitope peptide and the anti-Kappa VHH domain


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
C [auth X]Ribosomal_L12_Ne7o31X1 A: alpha arraysX: putative RnfG subunit of electron transport complexH: putative RnfG subunit of electron transport complexT: Aspartate/ornithine carbamoyltransferaseF: Ribosomal_L12_NECOD (v295.2)
B [auth H]Ribosomal_L12_Ne7o31H1 A: alpha arraysX: putative RnfG subunit of electron transport complexH: putative RnfG subunit of electron transport complexT: Aspartate/ornithine carbamoyltransferaseF: Ribosomal_L12_NECOD (v295.2)
A [auth L]Ribosomal_L12_Ne7o31L1 A: alpha arraysX: putative RnfG subunit of electron transport complexH: putative RnfG subunit of electron transport complexT: Aspartate/ornithine carbamoyltransferaseF: Ribosomal_L12_NECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
C [auth X]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (utative)
B [auth H]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (utative)
A [auth L]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (utative)

SAbDab2 Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
C [auth X]Heavy ChainIGHV3 -anti-PAS Fab 1.2 chimeric light chainSAbDab (2026-10-30)
B [auth H]Heavy ChainIGHV5 -1,2-ETHANEDIOL | PAS#1 epitope peptideSAbDab (2026-10-30)
A [auth L]Light ChainIGKV3 Kappa1,2-ETHANEDIOL | PAS#1 epitope peptideSAbDab (2026-10-30)

Protein Modification Annotation

Modified Residue(s)
ChainResidue(s)Description
D [auth P]PCA Parent Component: GLN

:  AA0031

:  2-pyrrolidone-5-carboxylic acid (Gln) MOD:00040 , 2-pyrrolidone-5-carboxylic acid (Glu) MOD:00420