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Entry information

Complex
AACDB_ID: 4283
PDBID: 7MDJ
Chains: AB_C
Organism: synthetic construct, Streptomyces lividans
Method: XRD
Resolution (Å): 2.75
Reference: 10.1085/jgp.202112965
Antibody
Antibody: 7MDJ synthetic-Fab
Antibody mutation: No
INN (Clinical Trial):
Antigen
Antigen: pH-gated potassium channel KcsA
Antigen mutation: No
Durg Target: P0A333; P0A334;

Sequence information

Antibody

Heavy Chain: A
Mutation: NULL

>7MDJ_A|Chain A|Fab heavy chain|synthetic construct (32630)
EISEVQLVESGGGLVQPGGSLRLSCAASGYTFTSDWIHWVRQAPGKGLEWIGEIIPSYGRANYADSVKGRFTISADTSKNTAYLQMNSLRAEDTAVYYCARERGDGYFDYWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHT

Light Chain: B
Mutation: NULL

>7MDJ_B|Chain B|Fab light chain|synthetic construct (32630)
SDIQMTQSPSSLSASVGDRVTITCRASQSIGTDIHWYQQKPGKAPKLLIKYASESISGVPSRFSGSRSGTDFTLTISSLQPEDFATYYCQQSNRWPFTFGQGTKVEIKRTVAAPSVFIFPPSDSQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC

Antigen

Chain: C
Mutation: NULL

>7MDJ_C|Chain C|pH-gated potassium channel KcsA|Streptomyces lividans (1916)
MAPMLSGLLARLVKLLLGRHGSALHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRCVAVVVMVAGITSFGLVTAALATWFVGREQERRGH

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)

Chain residues position delta_SASA : residuesposition

A: THR33 SER34 TRP36 GLU53 ILE55 SER57 TYR58 ARG60 ASN62 GLU102 ARG103 GLY104 ASP105

B: ASP2 GLY31 ASP33 TYR51 SER92 ASN93 ARG94 TRP95 PRO96 PHE97

C: TYR45 LEU46 VAL48 LEU49 ARG52 GLY53 ALA54 PRO55 GLY56 ALA57 GLN58 ILE60 THR61 TYR62 PRO63 ARG64

2、We defined interacting paratope-epitope residues by a distance cutoff of < 6 Å . Two amino acids are considered as interacting residues if they have at least one atom within a distance of 6 Å from any atom.

Interacting residues (Atom distance based)

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