4EI2 | pdb_00004ei2

Crystal Structures of MthK RCK gating ring bound to Barium

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: mpstruc

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
P	d4ei2p1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
P	d4ei2p2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
O	d4ei2o1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
O	d4ei2o2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
N	d4ei2n1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
N	d4ei2n2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
N	d4ei2n3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
M	d4ei2m1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
M	d4ei2m2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
M	d4ei2m3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
L	d4ei2l1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
L	d4ei2l2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
K	d4ei2k1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
K	d4ei2k2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
K	d4ei2k3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
J	d4ei2j1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
J	d4ei2j2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
J	d4ei2j3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
I	d4ei2i1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
I	d4ei2i2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
H	d4ei2h1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
H	d4ei2h2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
H	d4ei2h3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
G	d4ei2g1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
G	d4ei2g2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
G	d4ei2g3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
F	d4ei2f1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
F	d4ei2f2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
F	d4ei2f3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
E	d4ei2e1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
E	d4ei2e2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
E	d4ei2e3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
D	d4ei2d1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
D	d4ei2d2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
D	d4ei2d3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
C	d4ei2c1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
C	d4ei2c2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
C	d4ei2c3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
B	d4ei2b1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
B	d4ei2b2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
A	d4ei2a1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Potassium channel NAD-binding domain	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
A	d4ei2a2	Alpha and beta proteins (a+b)	TrkA C-terminal domain-like	TrkA C-terminal domain-like	automated matches	automated matches	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)
A	d4ei2a3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Methanothermobacter thermautotrophicus str. Delta H ) [TaxId: 187420 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
P	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
P	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
O	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
O	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
N	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
N	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
M	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
M	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
L	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
I	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	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)
G	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	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)
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)
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	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	TrkA C-terminal domain-like	8057608	3000037	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Potassium channel/Rex NAD-binding domain-like	8057606	3000042	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
P	e4ei2P3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
O	e4ei2O3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
N	e4ei2N3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
M	e4ei2M3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
L	e4ei2L3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
K	e4ei2K3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
J	e4ei2J3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
I	e4ei2I3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
H	e4ei2H3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
G	e4ei2G3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
F	e4ei2F3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
E	e4ei2E3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
D	e4ei2D3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
C	e4ei2C3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
B	e4ei2B3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)
A	e4ei2A3	A: alpha bundles	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F:	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
P	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
P	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)
P	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
O	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
O	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)
O	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
N	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
N	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)
N	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
M	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
M	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)
M	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
L	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
L	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)
L	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
K	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
K	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)
K	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
J	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
J	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)
J	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	CATH (4.3.0)
I	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
I	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)
I	3.30.70.1450	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Regulator of K+ conductance, C-terminal domain	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	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	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	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	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	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	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	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, I, J, K, L, M, N, O, P	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, I, J, K, L, M, N, O, P	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

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, I, J, K, L, M, N, O, P	Calcium-gated potassium channel mthK	monoatomic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity cation binding ion binding binding metal ion binding small molecule binding identical protein binding protein 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, I, J, K, L, M, N, O, P	IPR006037	Regulator of K+ conductance, C-terminal	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P	IPR050721	Trk/Ktr/HKT Potassium Transport	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P	IPR013099	Potassium channel domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P	IPR036721	Regulator of K+ conductance, C-terminal domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P	IPR003148	Regulator of K+ conductance, N-terminal lobe	Domain

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, I, J, K, L, M, N, O, P	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Potassium, Sodium, & Proton Ion-Selective	MthK Potassium channel gating ring with bound Ba²⁺