2FIQ

Crystal structure of putative tagatose 6-phosphate kinase

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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	d2fiqa1	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Aldolase	GatZ-like	Putative tagatose 6-phosphate kinase 1 GatZ	(Escherichia coli O157:H7 ) [TaxId: 83334 ],	SCOPe (2.08)
B	d2fiqb_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Aldolase	GatZ-like	Putative tagatose 6-phosphate kinase 1 GatZ	(Escherichia coli O157:H7 ) [TaxId: 83334 ],	SCOPe (2.08)
C	d2fiqc_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Aldolase	GatZ-like	Putative tagatose 6-phosphate kinase 1 GatZ	(Escherichia coli O157:H7 ) [TaxId: 83334 ],	SCOPe (2.08)
D	d2fiqd_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Aldolase	GatZ-like	Putative tagatose 6-phosphate kinase 1 GatZ	(Escherichia coli O157:H7 ) [TaxId: 83334 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	GatZ-like	8028587	4002357	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Aldolase	8040966	3000445	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Aldolase	8040966	3000445	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Aldolase	8040966	3000445	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Aldolase	8040966	3000445	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	Tagatose_6_P_K	e2fiqA1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Tagatose_6_P_K	ECOD (1.6)
B	Tagatose_6_P_K	e2fiqB1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Tagatose_6_P_K	ECOD (1.6)
C	Tagatose_6_P_K	e2fiqC1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Tagatose_6_P_K	ECOD (1.6)
D	Tagatose_6_P_K	e2fiqD1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Tagatose_6_P_K	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.20.20.70	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Aldolase class I	CATH (4.3.0)
A	1.10.400.20	Mainly Alpha	Orthogonal Bundle	GI Alpha 1, domain 2-like	putative tagatose 6-phosphate kinase domain like	CATH (4.3.0)
B	3.20.20.70	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Aldolase class I	CATH (4.3.0)
B	1.10.400.20	Mainly Alpha	Orthogonal Bundle	GI Alpha 1, domain 2-like	putative tagatose 6-phosphate kinase domain like	CATH (4.3.0)
C	3.20.20.70	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Aldolase class I	CATH (4.3.0)
C	1.10.400.20	Mainly Alpha	Orthogonal Bundle	GI Alpha 1, domain 2-like	putative tagatose 6-phosphate kinase domain like	CATH (4.3.0)
D	3.20.20.70	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Aldolase class I	CATH (4.3.0)
D	1.10.400.20	Mainly Alpha	Orthogonal Bundle	GI Alpha 1, domain 2-like	putative tagatose 6-phosphate kinase domain like	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF08013	D-tagatose-1,6-bisphosphate aldolase subunit GatZ/KbaZ-like (GatZ_KbaZ-like)	D-tagatose-1,6-bisphosphate aldolase subunit GatZ/KbaZ-like	Escherichia coli and other enteric bacteria contain two closely related D-tagatose 1,6-bisphosphate (TagBP)-specific aldolases involved in catabolism of galactitol (genes gatY gatZ) and of N-acetyl-galactosamine and D-galactosamine (genes kbaY, kb ...	Escherichia coli and other enteric bacteria contain two closely related D-tagatose 1,6-bisphosphate (TagBP)-specific aldolases involved in catabolism of galactitol (genes gatY gatZ) and of N-acetyl-galactosamine and D-galactosamine (genes kbaY, kbaZ, also called agaY, agaZ). The catalytic subunits GatY/KbaY alone are sufficient to show aldolase activity and contain most or all of the residues that have been identified as essential in substrate/product recognition and catalysis for class II aldolases [1, 2]. However, these aldolases differ from other Class II aldolases (which are homodimeric enzymes) in that they require subunits GatZ/KbaZ for full activity and for good in vivo and in vitro stability. The Z subunits alone do not show any aldolase activity [1]. This entry represents GatZ and KbaZ subunits. This entry also includes the D-tagatose 6-phosphate 4-epimerase Atu3167 from Agrobacterium fabrum which catalyzes the epimerization of D-tagatose 6-phosphate to D-fructose 6-phosphate [3]. It should be noted that the previous suggestion of a tagatose 6P-kinase function for other members of this family has been debated [4, 1, 5].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	putative tagatose 6-phosphate kinase 1	-	carbohydrate derivative catabolic process catabolic process carbohydrate derivative metabolic process organophosphate catabolic process D-tagatose 6-phosphate catabolic process D-tagatose 6-phosphate metabolic process organophosphate metabolic process phosphate-containing compound metabolic process metabolic process cellular process phosphorus metabolic process import into cell phosphoenolpyruvate-dependent sugar phosphotransferase system transport carbohydrate derivative catabolic process catabolic process carbohydrate derivative metabolic process organophosphate catabolic process D-tagatose 6-phosphate catabolic process D-tagatose 6-phosphate metabolic process organophosphate metabolic process phosphate-containing compound metabolic process metabolic process cellular process phosphorus metabolic process import into cell phosphoenolpyruvate-dependent sugar phosphotransferase system transport import across plasma membrane carbohydrate import across plasma membrane carbohydrate transport establishment of localization transmembrane transport localization carbohydrate transmembrane transport carbohydrate metabolic process hexitol metabolic process polyol metabolic process alcohol catabolic process hexitol catabolic process organic hydroxy compound metabolic process polyol catabolic process carbohydrate catabolic process primary metabolic process alcohol metabolic process alditol catabolic process galactitol catabolic process alditol metabolic process organic hydroxy compound catabolic process galactitol metabolic process small molecule metabolic process small molecule catabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR050303	GatZ/KbaZ carbohydrate metabolism	Family
A, B, C, D	IPR023436	D-tagatose-bisphosphate aldolase, class II, non-catalytic subunit GatZ	Family
A, B, C, D	IPR013785	Aldolase-type TIM barrel	Homologous Superfamily
A, B, C, D	IPR012062	D-tagatose-1,6-bisphosphate aldolase subunit GatZ/KbaZ-like	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.