Annotations: 8U1S

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
I [auth L]	V-set	e8u1sL1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
G [auth F]	V-set	e8u1sF1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
E [auth I]	V-set	e8u1sI1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
C [auth K]	Linocin_M18	e8u1sK01	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Linocin_M18	ECOD (v295)
H	V-set	e8u1sH1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
F [auth E]	V-set	e8u1sE1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
D [auth G]	V-set	e8u1sG1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
B [auth J]	Linocin_M18	e8u1sJ01	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Linocin_M18	ECOD (v295)
L [auth D]	V-set	e8u1sD1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
K [auth C]	V-set	e8u1sC1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
J [auth B]	V-set	e8u1sB1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
A	V-set	e8u1sA1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth K], E [auth I], G [auth F], I [auth L]	Light Chain	IGKV1	Kappa	neuraminidase	SAbDab (2026-06-26)
B [auth J], D [auth G], F [auth E], H	Heavy Chain	IGHV4	-	neuraminidase	SAbDab (2026-06-26)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth K], E [auth I], G [auth F], I [auth L]	mAb-393 light chain	-	-	-
B [auth J], D [auth G], F [auth E], H	mAb-393 heavy chain	-	-	-
A, J [auth B], K [auth C], L [auth D]	Neuraminidase	cation binding ion binding binding metal ion binding small molecule binding hydrolase activity, acting on glycosyl bonds alpha-sialidase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity exo-alpha-sialidase activity catalytic activity	carbohydrate metabolic process primary metabolic process metabolic process cellular process	cellular anatomical structure membrane host cell plasma membrane host cellular component host cell part host cell membrane other organism part virion component virion membrane

Chains	Accession	Name	Type
A, J [auth B], K [auth C], L [auth D]	IPR001860	Glycoside hydrolase, family 34	Family
A, J [auth B], K [auth C], L [auth D]	IPR036278	Sialidase superfamily	Homologous Superfamily

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.

8U1S | pdb_00008u1s