Annotations: 8F5I

SARS-CoV-2 S2 helix epitope scaffold bound by antibody DH1057.1

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D [auth L]	RNA_pol_Rpb1_5,RNA_pol_Rpb1_4	e8f5iL1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: RNA_pol_Rpb1_5,RNA_pol_Rpb1_4	ECOD (v294.1)
F [auth Y]	Glyco_hydro_43	e8f5iY1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Glyco_hydro_43	ECOD (v294.1)
C [auth H]	RNA_pol_Rpb1_5,RNA_pol_Rpb1_4	e8f5iH1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: RNA_pol_Rpb1_5,RNA_pol_Rpb1_4	ECOD (v294.1)
E [auth X]	Glyco_hydro_43	e8f5iX1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Glyco_hydro_43	ECOD (v294.1)
B	Glyco_hydro_43	e8f5iB1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Glyco_hydro_43	ECOD (v294.1)
A	RNA_pol_Rpb1_5,RNA_pol_Rpb1_4	e8f5iA1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: RNA_pol_Rpb1_5,RNA_pol_Rpb1_4	ECOD (v294.1)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
D [auth L], F [auth Y]	Light Chain	IGKV3	Kappa	specialized acyl carrier protein	SAbDab (2026-04-24)
C [auth H], E [auth X]	Heavy Chain	IGHV1	-	specialized acyl carrier protein	SAbDab (2026-04-24)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00550	Phosphopantetheine attachment site (PP-binding)	Phosphopantetheine attachment site	A 4'-phosphopantetheine prosthetic group is attached through a serine. This prosthetic group acts as a a 'swinging arm' for the attachment of activated fatty acid and amino-acid groups. This domain forms a four helix bundle. This family includes memb ...	A 4'-phosphopantetheine prosthetic group is attached through a serine. This prosthetic group acts as a a 'swinging arm' for the attachment of activated fatty acid and amino-acid groups. This domain forms a four helix bundle. This family includes members not included in Prosite. The inclusion of these members is supported by sequence analysis and functional evidence. The related domain of Swiss:P19828 has the attachment serine replaced by an alanine.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D [auth L], F [auth Y]	DH1057.1 LC	-	-	-
C [auth H], E [auth X]	DH1057.1 HC	-	-	-
A, B	Specialized acyl carrier protein	phosphopantetheine-dependent carrier activity prosthetic group binding binding acyl carrier activity molecular carrier activity ACP phosphopantetheine attachment site binding acyl binding small molecule binding	carbohydrate derivative biosynthetic process lipooligosaccharide metabolic process glycolipid metabolic process lipid A biosynthetic process liposaccharide metabolic process carbohydrate derivative metabolic process lipid biosynthetic process primary metabolic process glycolipid biosynthetic process phospholipid biosynthetic process phospholipid metabolic process lipid A metabolic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process carbohydrate derivative biosynthetic process lipooligosaccharide metabolic process glycolipid metabolic process lipid A biosynthetic process liposaccharide metabolic process carbohydrate derivative metabolic process lipid biosynthetic process primary metabolic process glycolipid biosynthetic process phospholipid biosynthetic process phospholipid metabolic process lipid A metabolic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process phosphate-containing compound metabolic process lipooligosaccharide biosynthetic process metabolic process cellular process phosphorus metabolic process lipid metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR006162	Phosphopantetheine attachment site	PTM
A, B	IPR009081	Phosphopantetheine binding ACP domain	Domain
A, B	IPR036736	ACP-like superfamily	Homologous Superfamily
A, B	IPR003231	Acyl carrier protein	Family

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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.