9HI4 | pdb_00009hi4

Structure of FI6-focused design_03 scaffold in complex with FI6-Fab

External Resource: Annotation

SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Protein Modification Annotation

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B, F [auth L]	Light Chain	IGKV4	Kappa	fi6-focused design_03	SAbDab (2026-02-06)
A, E [auth K]	Heavy Chain	IGHV3	-	fi6-focused design_03	SAbDab (2026-02-06)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C	PF13472	GDSL-like Lipase/Acylhydrolase family (Lipase_GDSL_2)	GDSL-like Lipase/Acylhydrolase family	This family of presumed lipases and related enzymes are similar to Pfam:PF00657.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D	FI6-focused design_03	-	-	-
C	FI6-focused design_03	hydrolase activity, acting on ester bonds hydrolase activity catalytic activity	-	-
B, F [auth L]	FI6 Fab Light chain	-	-	-
A, E [auth K]	FI6 Fab Heavy chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C	IPR013830	SGNH hydrolase-type esterase domain	Domain
C	IPR036514	SGNH hydrolase superfamily	Homologous Superfamily
C	IPR051532	Diverse Ester Hydrolysis Enzymes	Family

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
C	SEP	Parent Component: SER RESID: AA0037 PSI-MOD : O-phospho-L-serine MOD:00046

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.