4TTG | pdb_00004ttg

Beta-galactosidase (E. coli) in the presence of potassium chloride.

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Protein Modification Annotation

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
D	d4ttgd2	All beta proteins	Immunoglobulin-like beta-sandwich	beta-Galactosidase/glucuronidase domain	beta-Galactosidase/glucuronidase domain	beta-Galactosidase, domains 2 and 4	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
D	d4ttgd1	All beta proteins	Galactose-binding domain-like	Galactose-binding domain-like	beta-Galactosidase/glucuronidase, N-terminal domain	beta-Galactosidase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
D	d4ttgd5	All beta proteins	Supersandwich	Galactose mutarotase-like	beta-Galactosidase, domain 5	beta-Galactosidase, domain 5	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
D	d4ttgd3	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	(Trans)glycosidases	beta-glycanases	beta-Galactosidase, domain 3	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C	d4ttgc2	All beta proteins	Immunoglobulin-like beta-sandwich	beta-Galactosidase/glucuronidase domain	beta-Galactosidase/glucuronidase domain	beta-Galactosidase, domains 2 and 4	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C	d4ttgc1	All beta proteins	Galactose-binding domain-like	Galactose-binding domain-like	beta-Galactosidase/glucuronidase, N-terminal domain	beta-Galactosidase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C	d4ttgc5	All beta proteins	Supersandwich	Galactose mutarotase-like	beta-Galactosidase, domain 5	beta-Galactosidase, domain 5	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C	d4ttgc3	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	(Trans)glycosidases	beta-glycanases	beta-Galactosidase, domain 3	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d4ttgb2	All beta proteins	Immunoglobulin-like beta-sandwich	beta-Galactosidase/glucuronidase domain	beta-Galactosidase/glucuronidase domain	beta-Galactosidase, domains 2 and 4	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d4ttgb1	All beta proteins	Galactose-binding domain-like	Galactose-binding domain-like	beta-Galactosidase/glucuronidase, N-terminal domain	beta-Galactosidase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d4ttgb5	All beta proteins	Supersandwich	Galactose mutarotase-like	beta-Galactosidase, domain 5	beta-Galactosidase, domain 5	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d4ttgb3	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	(Trans)glycosidases	beta-glycanases	beta-Galactosidase, domain 3	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d4ttga2	All beta proteins	Immunoglobulin-like beta-sandwich	beta-Galactosidase/glucuronidase domain	beta-Galactosidase/glucuronidase domain	beta-Galactosidase, domains 2 and 4	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d4ttga1	All beta proteins	Galactose-binding domain-like	Galactose-binding domain-like	beta-Galactosidase/glucuronidase, N-terminal domain	beta-Galactosidase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d4ttga5	All beta proteins	Supersandwich	Galactose mutarotase-like	beta-Galactosidase, domain 5	beta-Galactosidase, domain 5	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d4ttga3	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	(Trans)glycosidases	beta-glycanases	beta-Galactosidase, domain 3	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D	SBP_bac_5	e4ttgD1	A: a/b three-layered sandwiches	X: Alpha-beta plaits	H: Protease propeptides/inhibitors	T: Protease propeptides/inhibitors	F: SBP_bac_5	ECOD (v294.1)
C	SBP_bac_5	e4ttgC1	A: a/b three-layered sandwiches	X: Alpha-beta plaits	H: Protease propeptides/inhibitors	T: Protease propeptides/inhibitors	F: SBP_bac_5	ECOD (v294.1)
B	SBP_bac_5	e4ttgB1	A: a/b three-layered sandwiches	X: Alpha-beta plaits	H: Protease propeptides/inhibitors	T: Protease propeptides/inhibitors	F: SBP_bac_5	ECOD (v294.1)
A	Cas10-Cmr2_palm2	e4ttgA1	A: a/b three-layered sandwiches	X: Alpha-beta plaits	H: Protease propeptides/inhibitors	T: Protease propeptides/inhibitors	F: Cas10-Cmr2_palm2	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	2.60.120.260	Mainly Beta	Sandwich	Jelly Rolls	Galactose-binding domain-like	CATH (4.3.0)
D	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
D	2.70.98.10	Mainly Beta	Distorted Sandwich	Beta-galactosidase	Chain A, domain 5	CATH (4.3.0)
C	2.60.120.260	Mainly Beta	Sandwich	Jelly Rolls	Galactose-binding domain-like	CATH (4.3.0)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
C	2.70.98.10	Mainly Beta	Distorted Sandwich	Beta-galactosidase	Chain A, domain 5	CATH (4.3.0)
B	2.60.120.260	Mainly Beta	Sandwich	Jelly Rolls	Galactose-binding domain-like	CATH (4.3.0)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
B	2.70.98.10	Mainly Beta	Distorted Sandwich	Beta-galactosidase	Chain A, domain 5	CATH (4.3.0)
A	2.60.120.260	Mainly Beta	Sandwich	Jelly Rolls	Galactose-binding domain-like	CATH (4.3.0)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (4.3.0)
A	2.70.98.10	Mainly Beta	Distorted Sandwich	Beta-galactosidase	Chain A, domain 5	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Beta-galactosidase	binding carbohydrate binding cation binding magnesium ion binding ion binding metal ion binding small molecule binding hydrolase activity, acting on glycosyl bonds beta-galactosidase activity hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity galactosidase activity	carbohydrate metabolic process catabolic process oligosaccharide catabolic process oligosaccharide metabolic process lactose catabolic process carbohydrate catabolic process primary metabolic process disaccharide metabolic process lactose metabolic process metabolic process cellular process disaccharide catabolic process	protein-containing complex catalytic complex beta-galactosidase complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR006102	Glycoside hydrolase family 2, immunoglobulin-like beta-sandwich	Domain
A, B, C, D	IPR032312	Beta-galactosidase, domain 4	Domain
A, B, C, D	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily
A, B, C, D	IPR006101	Glycoside hydrolase, family 2	Family
A, B, C, D	IPR004199	Beta galactosidase small chain/ domain 5	Domain
A, B, C, D	IPR008979	Galactose-binding-like domain superfamily	Homologous Superfamily
A, B, C, D	IPR036156	Beta-Galactosidase/glucuronidase domain superfamily	Homologous Superfamily
A, B, C, D	IPR006104	Glycosyl hydrolases family 2, sugar binding domain	Domain
A, B, C, D	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, B, C, D	IPR006103	Glycoside hydrolase family 2, catalytic domain	Domain
A, B, C, D	IPR023232	Glycoside hydrolase, family 2, active site	Active Site
A, B, C, D	IPR023230	Glycoside hydrolase, family 2, conserved site	Conserved Site
A, B, C, D	IPR023933	Glycoside hydrolase, family 2, beta-galactosidase	Family
A, B, C, D	IPR014718	Glycoside hydrolase-type carbohydrate-binding	Homologous Superfamily
A, B, C, D	IPR050347	Bacterial Beta-galactosidase	Family
A, B, C, D	IPR011013	Galactose mutarotase-like domain superfamily	Homologous Superfamily

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A, B, C, D	CSD	Parent Component: CYS RESID: AA0262 PSI-MOD : L-cysteine sulfinic acid MOD:00267

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.