1Q1B

Crystal structure of E. coli MalK in the nucleotide-free form

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	d1q1ba1	All beta proteins	OB-fold	MOP-like	ABC-transporter additional domain	Maltose transport protein MalK, C-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
A	d1q1ba2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	ABC transporter ATPase domain-like	Maltose transport protein MalK, N-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
B	d1q1bb1	All beta proteins	OB-fold	MOP-like	ABC-transporter additional domain	Maltose transport protein MalK, C-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
B	d1q1bb2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	ABC transporter ATPase domain-like	Maltose transport protein MalK, N-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
C	d1q1bc1	All beta proteins	OB-fold	MOP-like	ABC-transporter additional domain	Maltose transport protein MalK, C-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
C	d1q1bc2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	ABC transporter ATPase domain-like	Maltose transport protein MalK, N-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
D	d1q1bd1	All beta proteins	OB-fold	MOP-like	ABC-transporter additional domain	Maltose transport protein MalK, C-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
D	d1q1bd2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	ABC transporter ATPase domain-like	Maltose transport protein MalK, N-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	ABC transporter-like P-loop ATPases	8057781	3002020	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	MOP-like	8057782	3000099	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	MOP-like	8057782	3000099	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	ABC transporter-like P-loop ATPases	8057781	3002020	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	ABC transporter-like P-loop ATPases	8057781	3002020	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	MOP-like	8057782	3000099	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	MOP-like	8057782	3000099	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	ABC transporter-like P-loop ATPases	8057781	3002020	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	TOBE_2_1st	e1q1bA5	A: beta barrels	X: OB-fold	H: MOP-like (From Topology)	T: MOP-like	F: TOBE_2_1st	ECOD (1.6)
A	PRK11000,ABC_tran	e1q1bA2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PRK11000,ABC_tran	ECOD (1.6)
B	TOBE_2_1st	e1q1bB5	A: beta barrels	X: OB-fold	H: MOP-like (From Topology)	T: MOP-like	F: TOBE_2_1st	ECOD (1.6)
B	PRK11000,ABC_tran	e1q1bB2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PRK11000,ABC_tran	ECOD (1.6)
C	TOBE_2_1st	e1q1bC5	A: beta barrels	X: OB-fold	H: MOP-like (From Topology)	T: MOP-like	F: TOBE_2_1st	ECOD (1.6)
C	PRK11000,ABC_tran	e1q1bC2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PRK11000,ABC_tran	ECOD (1.6)
D	TOBE_2_1st	e1q1bD5	A: beta barrels	X: OB-fold	H: MOP-like (From Topology)	T: MOP-like	F: TOBE_2_1st	ECOD (1.6)
D	PRK11000,ABC_tran	e1q1bD2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PRK11000,ABC_tran	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
A	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
A	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
B	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
B	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
B	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
C	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
C	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
C	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)
D	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
D	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
D	2.40.50.100	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	RNA polymerase II/Efflux pump adaptor protein, barrel-sandwich hybrid domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF08402	TOBE domain (TOBE_2)	TOBE domain	-	Family
A, B, C, D	PF00005	ABC transporter (ABC_tran)	ABC transporter	ABC transporters for a large family of proteins responsible for translocation of a variety of compounds across biological membranes. ABC transporters are the largest family of proteins in many completely sequenced bacteria. ABC transporters are comp ...	ABC transporters for a large family of proteins responsible for translocation of a variety of compounds across biological membranes. ABC transporters are the largest family of proteins in many completely sequenced bacteria. ABC transporters are composed of two copies of this domain and two copies of a transmembrane domain Pfam:PF00664. These four domains may belong to a single polypeptide as in Swiss:P13569, or belong in different polypeptide chains.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Maltose/maltodextrin transport ATP-binding protein malK	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding transcription factor binding protein binding DNA-binding transcription factor binding pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity ATP-dependent activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity oligosaccharide transmembrane transporter activity disaccharide transmembrane transporter activity maltose transmembrane transporter activity ABC-type oligosaccharide transporter activity ABC-type transporter activity active transmembrane transporter activity transporter activity carbohydrate transmembrane transporter activity transmembrane transporter activity ABC-type carbohydrate transporter activity ABC-type maltose transporter activity	regulation of localization regulation of biological process regulation of transport transport regulation of maltose transport biological regulation negative regulation of biological process carbohydrate transport negative regulation of transport oligosaccharide transport establishment of localization negative regulation of maltose transport localization disaccharide transport regulation of localization regulation of biological process regulation of transport transport regulation of maltose transport biological regulation negative regulation of biological process carbohydrate transport negative regulation of transport oligosaccharide transport establishment of localization negative regulation of maltose transport localization disaccharide transport maltose transport polysaccharide localization dextrin transport macromolecule localization maltodextrin transmembrane transport polysaccharide transport regulation of cellular process negative regulation of transmembrane transport transmembrane transport regulation of transmembrane transport negative regulation of cellular process cellular process	ATPase dependent transmembrane transport complex protein-containing complex plasma membrane protein complex membrane plasma membrane membrane protein complex cellular anatomical entity transporter complex ATP-binding cassette (ABC) transporter complex cell periphery transmembrane transporter complex ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing maltose transport complex enzyme IIA-maltose transporter complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR013611	Transport-associated OB, type 2	Domain
A, B, C, D	IPR017871	ABC transporter-like, conserved site	Conserved Site
A, B, C, D	IPR047641	ABC transporter, ATP-binding protein MalK/UgpC-like	Family
A, B, C, D	IPR003439	ABC transporter-like, ATP-binding domain	Domain
A, B, C, D	IPR003593	AAA+ ATPase domain	Domain
A, B, C, D	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
A, B, C, D	IPR008995	Molybdate/tungstate binding, C-terminal	Homologous Superfamily
A, B, C, D	IPR015855	ABC transporter, maltose/maltodextrin import, MalK-like	Domain
A, B, C, D	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

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.