Annotations: 4K3A

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Sigma70_r2,Sigma70_ner	e4k3aB1	A: alpha arrays	X: TIM beta/alpha-barrel	H: TIM barrels	T: TIM barrels	F: Sigma70_r2,Sigma70_ner	ECOD (v295)
A	Sigma70_r2,Sigma70_ner	e4k3aA1	A: alpha arrays	X: TIM beta/alpha-barrel	H: TIM barrels	T: TIM barrels	F: Sigma70_r2,Sigma70_ner	ECOD (v295)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.70.98.30	Mainly Beta	Distorted Sandwich	Beta-galactosidase	Chain A, domain 5	CATH (4.3.0)
B	1.10.287.1170	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	glycoside hydrolase family 81 endo-[beta] glucanase	CATH (4.3.0)
B	1.20.5.420	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Immunoglobulin FC, subunit C	CATH (4.3.0)
A	2.70.98.30	Mainly Beta	Distorted Sandwich	Beta-galactosidase	Chain A, domain 5	CATH (4.3.0)
A	1.10.287.1170	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	glycoside hydrolase family 81 endo-[beta] glucanase	CATH (4.3.0)
A	1.20.5.420	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Immunoglobulin FC, subunit C	CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	glycoside hydrolase family 81 endo-beta-1,3-glucanase	hydrolase activity, acting on glycosyl bonds endo-1,3(4)-beta-glucanase activity beta-glucanase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity glucosidase activity beta-glucosidase activity glucan endo-1,3-beta-D-glucosidase activity	carbohydrate metabolic process polysaccharide metabolic process catabolic process polysaccharide catabolic process carbohydrate catabolic process metabolic process cellular process primary metabolic process macromolecule metabolic process macromolecule catabolic process cellular component organization cell wall organization or biogenesis cell wall organization cellular component organization or biogenesis carbohydrate metabolic process polysaccharide metabolic process catabolic process polysaccharide catabolic process carbohydrate catabolic process metabolic process cellular process primary metabolic process macromolecule metabolic process macromolecule catabolic process cellular component organization cell wall organization or biogenesis cell wall organization cellular component organization or biogenesis external encapsulating structure organization	-

Chains	Accession	Name	Type
A, B	IPR005200	Endo-1,3(4)-beta-glucanase	Family
A, B	IPR040451	Glycosyl hydrolase family 81, N-terminal	Domain
A, B	IPR040720	Glycosyl hydrolase family 81, C-terminal domain	Domain

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.

4K3A | pdb_00004k3a