3G3A

Structure of a lamprey variable lymphocyte receptor in complex with a protein antigen

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d3g3aa_	Alpha and beta proteins (a/b)	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	L domain-like	automated matches	automated matches	sea lamprey (Petromyzon marinus ) [TaxId: 7757 ],	SCOPe (2.08)
C	d3g3ac_	Alpha and beta proteins (a/b)	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	L domain-like	automated matches	automated matches	sea lamprey (Petromyzon marinus ) [TaxId: 7757 ],	SCOPe (2.08)
E	d3g3ae_	Alpha and beta proteins (a/b)	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	L domain-like	automated matches	automated matches	sea lamprey (Petromyzon marinus ) [TaxId: 7757 ],	SCOPe (2.08)
G	d3g3ag_	Alpha and beta proteins (a/b)	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	L domain-like	automated matches	automated matches	sea lamprey (Petromyzon marinus ) [TaxId: 7757 ],	SCOPe (2.08)
B	d3g3ab_	Alpha and beta proteins (a+b)	Lysozyme-like	Lysozyme-like	C-type lysozyme	Lysozyme	bantam,chickens (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
D	d3g3ad_	Alpha and beta proteins (a+b)	Lysozyme-like	Lysozyme-like	C-type lysozyme	Lysozyme	bantam,chickens (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
F	d3g3af_	Alpha and beta proteins (a+b)	Lysozyme-like	Lysozyme-like	C-type lysozyme	Lysozyme	bantam,chickens (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
H	d3g3ah_	Alpha and beta proteins (a+b)	Lysozyme-like	Lysozyme-like	C-type lysozyme	Lysozyme	bantam,chickens (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	L domain-like	8096001	3001010	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	L domain-like	8096001	3001010	SCOP2B (2022-06-29)
E	SCOP2 Family	Ngr ectodomain-like	8047124	4002278	SCOP2 (2022-06-29)
E	SCOP2 Superfamily	L domain-like	8096001	3001010	SCOP2 (2022-06-29)
G	SCOP2B Superfamily	L domain-like	8096001	3001010	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Lysozyme-like	8037428	3001879	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Lysozyme-like	8037428	3001879	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Lysozyme-like	8037428	3001879	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Lysozyme-like	8037428	3001879	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	LRR_8_1	e3g3aA1	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: LRR_8_1	ECOD (1.6)
C	LRR_8_1	e3g3aC1	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: LRR_8_1	ECOD (1.6)
E	LRR_8_1	e3g3aE1	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: LRR_8_1	ECOD (1.6)
G	LRR_8_1	e3g3aG1	A: beta duplicates or obligate multimers	X: Single-stranded right-handed beta-helix	H: Leucine-rich repeats (From Topology)	T: Leucine-rich repeats	F: LRR_8_1	ECOD (1.6)
B	Lys	e3g3aB1	A: a+b complex topology	X: Lysozyme-like (From Homology)	H: Lysozyme-like	T: Lysozyme-like	F: Lys	ECOD (1.6)
D	Lys	e3g3aD1	A: a+b complex topology	X: Lysozyme-like (From Homology)	H: Lysozyme-like	T: Lysozyme-like	F: Lys	ECOD (1.6)
F	Lys	e3g3aF1	A: a+b complex topology	X: Lysozyme-like (From Homology)	H: Lysozyme-like	T: Lysozyme-like	F: Lys	ECOD (1.6)
H	Lys	e3g3aH1	A: a+b complex topology	X: Lysozyme-like (From Homology)	H: Lysozyme-like	T: Lysozyme-like	F: Lys	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.80.10.10	Alpha Beta	Alpha-Beta Horseshoe	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	Ribonuclease Inhibitor	CATH (4.3.0)
C	3.80.10.10	Alpha Beta	Alpha-Beta Horseshoe	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	Ribonuclease Inhibitor	CATH (4.3.0)
E	3.80.10.10	Alpha Beta	Alpha-Beta Horseshoe	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	Ribonuclease Inhibitor	CATH (4.3.0)
G	3.80.10.10	Alpha Beta	Alpha-Beta Horseshoe	Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)	Ribonuclease Inhibitor	CATH (4.3.0)
B	1.10.530.10	Mainly Alpha	Orthogonal Bundle	Lysozyme		CATH (4.3.0)
D	1.10.530.10	Mainly Alpha	Orthogonal Bundle	Lysozyme		CATH (4.3.0)
F	1.10.530.10	Mainly Alpha	Orthogonal Bundle	Lysozyme		CATH (4.3.0)
H	1.10.530.10	Mainly Alpha	Orthogonal Bundle	Lysozyme		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
A, C, E, G	VLRB (Variable lymphocyte receptor B)	VLRB	Petromyzon marinus (sea lamprey)	VLRB*03	R-LIKE-DOMAIN LRRNT, R-LIKE-DOMAIN LRRV1, R-LIKE-DOMAIN LRRV2, R-LIKE-DOMAIN LRRV3, R-LIKE-DOMAIN LRRCT	RPI	VLRB	IMGT (202446-0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C, E, G	PF13855	Leucine rich repeat (LRR_8)	Leucine rich repeat	-	Repeat
A, C, E, G	PF01462	Leucine rich repeat N-terminal domain (LRRNT)	Leucine rich repeat N-terminal domain	-	Family
A, C, E, G	PF11921	Domain of unknown function (DUF3439) (DUF3439)	Domain of unknown function (DUF3439)	-	Family
B, D, F, H	PF00062	C-type lysozyme/alpha-lactalbumin family (Lys)	C-type lysozyme/alpha-lactalbumin family	Alpha-lactalbumin is the regulatory subunit of lactose synthase, changing the substrate specificity of galactosyltransferase from N-acetylglucosamine to glucose. C-type lysozymes are secreted bacteriolytic enzymes that cleave the peptidoglycan of bac ...	Alpha-lactalbumin is the regulatory subunit of lactose synthase, changing the substrate specificity of galactosyltransferase from N-acetylglucosamine to glucose. C-type lysozymes are secreted bacteriolytic enzymes that cleave the peptidoglycan of bacterial cell walls. Structure is a multi-domain, mixed alpha and beta fold, containing four conserved disulfide bonds.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C, E, G	Variable lymphocyte receptor VLRB.2D	-	-	-
B, D, F, H	Lysozyme C	hydrolase activity, acting on glycosyl bonds hexosaminidase activity beta-N-acetylhexosaminidase activity beta-N-acetylglucosaminidase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity peptidoglycan muralytic activity lysozyme activity identical protein binding protein binding binding	catabolic process cell wall organization or biogenesis metabolic process cellular process macromolecule metabolic process macromolecule catabolic process cell wall macromolecule catabolic process cell wall macromolecule metabolic process biological process involved in interspecies interaction between organisms disruption of cell in another organism disruption of anatomical structure in another organism killing of cells of another organism cell killing response to stimulus catabolic process cell wall organization or biogenesis metabolic process cellular process macromolecule metabolic process macromolecule catabolic process cell wall macromolecule catabolic process cell wall macromolecule metabolic process biological process involved in interspecies interaction between organisms disruption of cell in another organism disruption of anatomical structure in another organism killing of cells of another organism cell killing response to stimulus response to other organism defense response response to external stimulus defense response to Gram-negative bacterium response to biotic stimulus defense response to bacterium defense response to other organism response to stress response to bacterium response to external biotic stimulus defense response to Gram-positive bacterium	cellular anatomical structure intracellular anatomical structure cytoplasm extracellular region extracellular space membrane-bounded organelle intracellular organelle organelle endoplasmic reticulum intracellular membrane-bounded organelle endomembrane system

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C, E, G	IPR050467	Leucine-rich repeat and fibronectin type-III domain-containing	Family
A, C, E, G	IPR032675	Leucine-rich repeat domain superfamily	Homologous Superfamily
A, C, E, G	IPR000372	Leucine-rich repeat N-terminal domain	Domain
A, C, E, G	IPR024592	Variable lymphocyte receptor, C-terminal	Domain
A, C, E, G	IPR001611	Leucine-rich repeat	Repeat
A, C, E, G	IPR003591	Leucine-rich repeat, typical subtype	Repeat
B, D, F, H	IPR001916	Glycoside hydrolase, family 22	Family
B, D, F, H	IPR023346	Lysozyme-like domain superfamily	Homologous Superfamily
B, D, F, H	IPR019799	Glycoside hydrolase family 22 domain	Domain
B, D, F, H	IPR000974	Glycoside hydrolase, family 22, lysozyme	Family

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.