Annotations: 2YK1

Structure of human anti-nicotine Fab fragment in complex with nicotine

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B [auth L]	d2yk1l2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B [auth L]	d2yk1l1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B [auth L]	Alpha-amylase	e2yk1L3	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Alpha-amylase	ECOD (v295.2)
A [auth H]	PK_Tyr_Ser-Thr	e2yk1H1	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: PK_Tyr_Ser-Thr	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
B [auth L]	FAB FRAGMENT	L-LAMBDA	Homo sapiens (human)	IGLV1-4701, IGLJ701, IGLJ702, IGLC201, IGLC202, IGLC304	V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA	IG	FAB-GAMMA-2_LAMBDA	IMGT (202633-0)
A [auth H]	FAB FRAGMENT	VH-CH1	Homo sapiens (human)	IGHV4-3901, IGHV4-3907, IGHJ101, IGHJ501, IGHJ502, IGHG201, IGHG206, IGHG205, IGHG2*03	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-2_LAMBDA	IMGT (202633-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth L]	Light Chain	IGLV1	Lambda	(S)-3-(1-METHYLPYRROLIDIN-2-YL)PYRIDINE	SAbDab (2026-08-28)
A [auth H]	Heavy Chain	IGHV4	-	(S)-3-(1-METHYLPYRROLIDIN-2-YL)PYRIDINE	SAbDab (2026-08-28)

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