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Entry information

Complex
AACDB_ID: 6758
PDBID: 3ZTJ
Chains: KL_F
Organism: Influenza A virus (A/Aichi/2/1968(H3N2)), Homo sapiens
Method: XRD
Resolution (Å): 3.41
Reference: 10.1126/science.1205669
Antibody
Antibody: FI6v3 Fab
Antibody mutation: No
INN (Clinical Trial):
Antigen
Antigen: Influenza A virus H3N2 hemagglutinin HA2
Antigen mutation: No
Durg Target: P03437

Sequence information

Antibody

Heavy Chain: K
Mutation: NULL

>3ZTJ_K|Chain G, I, K|FI6V3 ANTIBODY HEAVY CHAIN|HOMO SAPIENS (9606)
QVQLVESGGGVVQPGRSLRLSCAASGFTFSTYAMHWVRQAPGKGLEWVAVISYDANYKYYADSVKGRFTISRDNSKNTLYLQMNSLRAEDTAVYYCAKDSQLRSLLYFEWLSQGYFDYWGQGTLVTVSSASTKGPSVFPLAPSSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKRVEPK

Light Chain: L
Mutation: NULL

>3ZTJ_L|Chain H, J, L|FI6V3 ANTIBODY LIGHT CHAIN|HOMO SAPIENS (9606)
DIVMTQSPDSLAVSLGERATINCKSSQSVTFNYKNYLAWYQQKPGQPPKLLIYWASTRESGVPDRFSGSGSGTDFTLTISSLQAEDVAVYYCQQHYRTPPTFGQGTKVEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC

Antigen

Chain: F
Mutation: NULL

>3ZTJ_F|Chain B, D, F|HEMAGGLUTININ HA2 CHAIN|INFLUENZA A VIRUS (387139)
GLFGAIAGFIENGWEGMIDGWYGFRHQNSEGTGQAADLKSTQAAIDQINGKLNRVIEKTNEKFHQIEKEFSEVEGRIQDLEKYVEDTKIDLWSYNAELLVALENQHTIDLTDSEMNKLFEKTRRQLRENAEEMGNGCFKIYHKCDNACIESIRNGTYDHDVYRDEALNNRFQIKG

Interaction

1、Solvent accessible surface areas (SASA) were calculated (Naccess V2.1.1) for each residue in antibody and antigen, respectively. The residues with SASA loss in binding of more than 1Å2 were classified as interacting residues.

Interacting residues (ΔSASA based)

K: TYR52 GLN97 LEU98 ARG99

L: PHE27 ASN28 TYR32 TYR92 ARG93

F: ILE18 ASP19 GLY20 TRP21 LEU38 LYS39 THR41 GLN42 ALA43 ILE45 ASP46 GLN47 ILE48 ASN49 LEU52 ASN53 ILE56 GLU57

2、We defined interacting paratope-epitope residues by a distance cutoff of < 5Å . Two amino acids are considered as interacting residues if they have at least one atom within a distance of 5 Å from any atom.

Interacting residues (Atom distance based)

Within the threshold, the structure has no interacting amino acids and cannot be displayed. This may be due to the following reasons:
1. The method used to determine the structure is electron microscopy or nuclear magnetic resonance, which results in too low resolution;
2. the coordinates of some amino acids involved in the interaction in the structure were not detected due to technical limitations. The results are less based on atomic coordinates, but the antibody does target the antigen.

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