Annotations: 1LNQ

CRYSTAL STRUCTURE OF MTHK AT 3.3 A

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
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: mpstruc

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
H	d1lnqh3	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
H	d1lnqh4	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	TrkA C-terminal domain-like	Potassium channel-related protein MthK, C-terminal domain	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
H	d1lnqh2	Membrane and cell surface proteins and peptides	Gated ion channels	Voltage-gated ion channels	Voltage-gated potassium channels	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
G	d1lnqg3	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
G	d1lnqg4	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	TrkA C-terminal domain-like	Potassium channel-related protein MthK, C-terminal domain	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
G	d1lnqg2	Membrane and cell surface proteins and peptides	Gated ion channels	Voltage-gated ion channels	Voltage-gated potassium channels	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
F	d1lnqf3	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
F	d1lnqf4	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	TrkA C-terminal domain-like	Potassium channel-related protein MthK, C-terminal domain	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
F	d1lnqf2	Membrane and cell surface proteins and peptides	Gated ion channels	Voltage-gated ion channels	Voltage-gated potassium channels	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
E	d1lnqe3	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
E	d1lnqe4	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	TrkA C-terminal domain-like	Potassium channel-related protein MthK, C-terminal domain	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
E	d1lnqe2	Membrane and cell surface proteins and peptides	Gated ion channels	Voltage-gated ion channels	Voltage-gated potassium channels	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
D	d1lnqd3	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
D	d1lnqd4	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	TrkA C-terminal domain-like	Potassium channel-related protein MthK, C-terminal domain	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
D	d1lnqd2	Membrane and cell surface proteins and peptides	Gated ion channels	Voltage-gated ion channels	Voltage-gated potassium channels	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
C	d1lnqc3	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
C	d1lnqc4	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	TrkA C-terminal domain-like	Potassium channel-related protein MthK, C-terminal domain	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
C	d1lnqc2	Membrane and cell surface proteins and peptides	Gated ion channels	Voltage-gated ion channels	Voltage-gated potassium channels	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
B	d1lnqb3	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
B	d1lnqb4	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	TrkA C-terminal domain-like	Potassium channel-related protein MthK, C-terminal domain	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
B	d1lnqb2	Membrane and cell surface proteins and peptides	Gated ion channels	Voltage-gated ion channels	Voltage-gated potassium channels	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
A	d1lnqa3	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
A	d1lnqa4	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	TrkA C-terminal domain-like	Potassium channel-related protein MthK, C-terminal domain	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)
A	d1lnqa2	Membrane and cell surface proteins and peptides	Gated ion channels	Voltage-gated ion channels	Voltage-gated potassium channels	Potassium channel-related protein MthK	(Methanothermobacter thermautotrophicus ) [TaxId: 145262 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
H	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Voltage-gated potassium channels	8001548	3000023	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Voltage-gated potassium channels	8001548	3000023	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Voltage-gated potassium channels	8001548	3000023	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Voltage-gated potassium channels	8001548	3000023	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Voltage-gated potassium channels	8001548	3000023	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Voltage-gated potassium channels	8001548	3000023	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Voltage-gated potassium channels	8001548	3000023	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
A	SCOP2 Family	Voltage-gated potassium channels	8001510	4000034	SCOP2 (2022-06-29)
A	SCOP2 Family	Potassium channel NAD-binding domain	8057605	4000005	SCOP2 (2022-06-29)
A	SCOP2 Family	TrkA C-terminal domain-like	8057607	4000027	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Voltage-gated potassium channels	8001548	3000023	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
H	Urease_gamma	e1lnqH1	A: alpha arrays	X: Urease, gamma-subunit	H: Urease, gamma-subunit	T: Urease, gamma-subunit	F: Urease_gamma	ECOD (v295.2)
H	HSP90,HATPase_c_3	e1lnqH2	A: alpha arrays	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: HSP90,HATPase_c_3	ECOD (v295.2)
H	FAD_binding_3	e1lnqH3	A: alpha arrays	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: C-terminal subdomain in Lon-related proteases catalytic domains	F: FAD_binding_3	ECOD (v295.2)
G	Urease_gamma	e1lnqG1	A: alpha arrays	X: Urease, gamma-subunit	H: Urease, gamma-subunit	T: Urease, gamma-subunit	F: Urease_gamma	ECOD (v295.2)
G	HSP90,HATPase_c_3	e1lnqG2	A: alpha arrays	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: HSP90,HATPase_c_3	ECOD (v295.2)
G	FAD_binding_3	e1lnqG3	A: alpha arrays	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: C-terminal subdomain in Lon-related proteases catalytic domains	F: FAD_binding_3	ECOD (v295.2)
F	Urease_gamma	e1lnqF1	A: alpha arrays	X: Urease, gamma-subunit	H: Urease, gamma-subunit	T: Urease, gamma-subunit	F: Urease_gamma	ECOD (v295.2)
F	HSP90,HATPase_c_3	e1lnqF2	A: alpha arrays	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: HSP90,HATPase_c_3	ECOD (v295.2)
F	FAD_binding_3	e1lnqF3	A: alpha arrays	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: C-terminal subdomain in Lon-related proteases catalytic domains	F: FAD_binding_3	ECOD (v295.2)
E	Urease_gamma	e1lnqE1	A: alpha arrays	X: Urease, gamma-subunit	H: Urease, gamma-subunit	T: Urease, gamma-subunit	F: Urease_gamma	ECOD (v295.2)
E	HSP90,HATPase_c_3	e1lnqE2	A: alpha arrays	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: HSP90,HATPase_c_3	ECOD (v295.2)
E	FAD_binding_3	e1lnqE3	A: alpha arrays	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: C-terminal subdomain in Lon-related proteases catalytic domains	F: FAD_binding_3	ECOD (v295.2)
D	Urease_gamma	e1lnqD1	A: alpha arrays	X: Urease, gamma-subunit	H: Urease, gamma-subunit	T: Urease, gamma-subunit	F: Urease_gamma	ECOD (v295.2)
D	HSP90,HATPase_c_3	e1lnqD2	A: alpha arrays	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: HSP90,HATPase_c_3	ECOD (v295.2)
D	FAD_binding_3	e1lnqD3	A: alpha arrays	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: C-terminal subdomain in Lon-related proteases catalytic domains	F: FAD_binding_3	ECOD (v295.2)
C	Urease_gamma	e1lnqC1	A: alpha arrays	X: Urease, gamma-subunit	H: Urease, gamma-subunit	T: Urease, gamma-subunit	F: Urease_gamma	ECOD (v295.2)
C	HSP90,HATPase_c_3	e1lnqC2	A: alpha arrays	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: HSP90,HATPase_c_3	ECOD (v295.2)
C	FAD_binding_3	e1lnqC3	A: alpha arrays	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: C-terminal subdomain in Lon-related proteases catalytic domains	F: FAD_binding_3	ECOD (v295.2)
B	Urease_gamma	e1lnqB1	A: alpha arrays	X: Urease, gamma-subunit	H: Urease, gamma-subunit	T: Urease, gamma-subunit	F: Urease_gamma	ECOD (v295.2)
B	HSP90,HATPase_c_3	e1lnqB2	A: alpha arrays	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: HSP90,HATPase_c_3	ECOD (v295.2)
B	FAD_binding_3	e1lnqB3	A: alpha arrays	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: C-terminal subdomain in Lon-related proteases catalytic domains	F: FAD_binding_3	ECOD (v295.2)
A	Ion_trans_2	e1lnqA1	A: a+b two layers	X: Voltage-gated ion channels	H: Voltage-gated ion channels	T: Voltage-gated ion channels	F: Ion_trans_2	ECOD (v295.2)
A	HSP90,HATPase_c_3	e1lnqA2	A: alpha arrays	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: HSP90,HATPase_c_3	ECOD (v295.2)
A	FAD_binding_3	e1lnqA3	A: alpha arrays	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: C-terminal subdomain in Lon-related proteases catalytic domains	F: FAD_binding_3	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
H	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
H	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
H	1.20.5.870	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Voltage-gated potassium channel	CATH (4.3.0)
H	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
G	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
G	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
G	1.20.5.870	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Voltage-gated potassium channel	CATH (4.3.0)
G	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
F	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
F	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
F	1.20.5.870	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Voltage-gated potassium channel	CATH (4.3.0)
F	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
E	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
E	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
E	1.20.5.870	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Voltage-gated potassium channel	CATH (4.3.0)
E	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
D	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
D	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
D	1.20.5.870	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Voltage-gated potassium channel	CATH (4.3.0)
D	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
C	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
C	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
C	1.20.5.870	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Voltage-gated potassium channel	CATH (4.3.0)
C	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
B	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
B	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
B	1.20.5.870	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Voltage-gated potassium channel	CATH (4.3.0)
B	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
A	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
A	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
A	1.20.5.870	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Voltage-gated potassium channel	CATH (4.3.0)
A	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H	PF02080	TrkA-C domain (TrkA_C)	TrkA-C domain	This domain is often found next to the Pfam:PF02254 domain. The exact function of this domain is unknown. It has been suggested that it may bind an unidentified ligand [1]. The domain is predicted to adopt an all beta structure [1].	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	PF02254	TrkA-N domain (TrkA_N)	TrkA-N domain	This domain is found in a wide variety of proteins. These protein include potassium channels Swiss:P31069, phosphoesterases Swiss:Q59027, and various other transporters. This domain binds to NAD.	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	PF07885	Ion channel (Ion_trans_2)	Ion channel	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H	POTASSIUM CHANNEL RELATED PROTEIN	monoatomic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity identical protein binding protein binding binding	localization transport monoatomic ion transport potassium ion transport monoatomic cation transport establishment of localization metal ion transport	cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H	IPR006037	Regulator of K+ conductance, C-terminal	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	IPR050721	Trk/Ktr/HKT Potassium Transport	Family
A, B, C, D, E A, B, C, D, E, F, G, H	IPR013099	Potassium channel domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H	IPR036721	Regulator of K+ conductance, C-terminal domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H	IPR003148	Regulator of K+ conductance, N-terminal lobe	Domain

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E A, B, C, D, E, F, G, H	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Potassium, Sodium, & Proton Ion-Selective	MthK Potassium channel, Ca⁺⁺ gated