Annotations: 6Z16

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
K [auth d]	Proton_antipo_M	e6z16d1	A: alpha complex topology	X: Sodium/proton antiporter subunits-like (From Homology)	H: Sodium/proton antiporter subunits-like	T: NADH-quinone oxidoreductase subunit L (NuoL)-related	F: Proton_antipo_M	ECOD (1.6)
D	Proton_antipo_M	e6z16D1	A: alpha complex topology	X: Sodium/proton antiporter subunits-like (From Homology)	H: Sodium/proton antiporter subunits-like	T: NADH-quinone oxidoreductase subunit L (NuoL)-related	F: Proton_antipo_M	ECOD (1.6)
J [auth c]	UNK_F_TYPE	e6z16c1	A: alpha complex topology	X: NADH-quinone oxidoreductase subunit K (From Topology)	H: NADH-quinone oxidoreductase subunit K (From Topology)	T: NADH-quinone oxidoreductase subunit K	F: UNK_F_TYPE	ECOD (1.6)
C	UNK_F_TYPE	e6z16C1	A: alpha complex topology	X: NADH-quinone oxidoreductase subunit K (From Topology)	H: NADH-quinone oxidoreductase subunit K (From Topology)	T: NADH-quinone oxidoreductase subunit K	F: UNK_F_TYPE	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
G, N [auth g]	PF03334	Na+/H+ antiporter subunit (PhaG_MnhG_YufB)	Na+/H+ antiporter subunit	-	Family
F, M [auth f]	PF04066	Multiple resistance and pH regulation protein F (MrpF / PhaF) (MrpF_PhaF)	Multiple resistance and pH regulation protein F (MrpF / PhaF)	-	Family
E, L [auth e]	PF01899	Na+/H+ ion antiporter subunit (MNHE)	Na+/H+ ion antiporter subunit	-	Family
D, K [auth d]	PF00361	NADH:quinone oxidoreductase/Mrp antiporter, TM (Proton_antipo_M)	NADH:quinone oxidoreductase/Mrp antiporter, TM	This entry includes membrane transporters and represents some 7 of potentially 14-16 TM regions. In many instances, its members forms part of complex I that catalyses the transfer of two electrons from NADH to ubiquinone in a reaction that is associa ...	This entry includes membrane transporters and represents some 7 of potentially 14-16 TM regions. In many instances, its members forms part of complex I that catalyses the transfer of two electrons from NADH to ubiquinone in a reaction that is associated with proton translocation across the membrane, and in this context is a combination predominantly of subunits 2, 4, 5, 14, L, M and N [1]. In many bacterial species these proteins are probable stand-alone transporters not coupled with oxidoreduction [2].	Domain
C, J [auth c]	PF00420	NADH-ubiquinone/plastoquinone oxidoreductase chain 4L (Oxidored_q2)	NADH-ubiquinone/plastoquinone oxidoreductase chain 4L	-	Family
B, I [auth b]	PF04039	Domain related to MnhB subunit of Na+/H+ antiporter (MnhB)	Domain related to MnhB subunit of Na+/H+ antiporter	-	Family
A, H [auth a]	PF00361	NADH:quinone oxidoreductase/Mrp antiporter, TM (Proton_antipo_M)	NADH:quinone oxidoreductase/Mrp antiporter, TM	This entry includes membrane transporters and represents some 7 of potentially 14-16 TM regions. In many instances, its members forms part of complex I that catalyses the transfer of two electrons from NADH to ubiquinone in a reaction that is associa ...	This entry includes membrane transporters and represents some 7 of potentially 14-16 TM regions. In many instances, its members forms part of complex I that catalyses the transfer of two electrons from NADH to ubiquinone in a reaction that is associated with proton translocation across the membrane, and in this context is a combination predominantly of subunits 2, 4, 5, 14, L, M and N [1]. In many bacterial species these proteins are probable stand-alone transporters not coupled with oxidoreduction [2].	Domain
A, H [auth a]	PF13244	MBH, subunit D (MbhD)	MBH, subunit D	Hydrogen gas-evolving membrane-bound hydrogenase (MBH) is a respiratory complex homologous to the quinone-reducing Complex I. Like Complex I, MBH has peripheral and membrane arms. MBH is made of 14 subunits (MbhA-N). MbhJ, K, L, N and M form the Memb ...	Hydrogen gas-evolving membrane-bound hydrogenase (MBH) is a respiratory complex homologous to the quinone-reducing Complex I. Like Complex I, MBH has peripheral and membrane arms. MBH is made of 14 subunits (MbhA-N). MbhJ, K, L, N and M form the Membrane-anchored hydrogenase module. MbhJ, K, L, N are predicted to be exposed to the cytoplasm and form the peripheral arm. The remaining 10 subunits are predicted to be integral membrane proteins forming the membrane arm, made of 44 transmembrane helices (TMH) [2, 3]. MbhA, B, C and F form the Sodium translocation module. MbhD, E, G and H form the Proton translocation module. MbhI is the linker between the hydrogenase module and the proton-translocating membrane module. It anchors the discontinuous TMH7 of MbhH via its middle lateral helix and the C-terminal of TMH2, found in MbhE. MbhD and MbhE together are equivalent to Nqo10 of Complex I [1]. MbhD has three TM helices.	Domain
A, H [auth a]	PF00662	NADH-Ubiquinone oxidoreductase (complex I), chain 5 N-terminus (Proton_antipo_N)	NADH-Ubiquinone oxidoreductase (complex I), chain 5 N-terminus	This entry represents an amino terminal extension of Pfam:PF00361. Only NADH-Ubiquinone chain 5 and eubacterial chain L are in this family. This sub-family is part of complex I which catalyses the transfer of two electrons from NADH to ubiquinone in ...	This entry represents an amino terminal extension of Pfam:PF00361. Only NADH-Ubiquinone chain 5 and eubacterial chain L are in this family. This sub-family is part of complex I which catalyses the transfer of two electrons from NADH to ubiquinone in a reaction that is associated with proton translocation across the membrane.	Domain
A, H [auth a]	PF20501	MBH, subunit E (MbhE)	MBH, subunit E	Hydrogen gas-evolving membrane-bound hydrogenase (MBH) is a respiratory complex homologous to the quinone-reducing Complex I. Like Complex I, MBH has peripheral and membrane arms. MBH is made of 14 subunits (MbhA-N). MbhJ, K, L, N and M form the Memb ...	Hydrogen gas-evolving membrane-bound hydrogenase (MBH) is a respiratory complex homologous to the quinone-reducing Complex I. Like Complex I, MBH has peripheral and membrane arms. MBH is made of 14 subunits (MbhA-N). MbhJ, K, L, N and M form the Membrane-anchored hydrogenase module. MbhJ, K, L, N are predicted to be exposed to the cytoplasm and form the peripheral arm. The remaining 10 subunits are predicted to be integral membrane proteins forming the membrane arm, made of 44 transmembrane helices (TMH) [2, 3]. MbhA, B, C and F form the Sodium translocation module. MbhD, E, G and H form the Proton translocation module. MbhI is the linker between the hydrogenase module and the proton-translocating membrane module. It anchors the discontinuous TMH7 of MbhH via its middle lateral helix and the C-terminal of TMH2, found in MbhE. MbhD and MbhE together are equivalent to Nqo10 of Complex I [1]. MbhE has two transmembrane helices: TMH1 and TMH2.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
G, N [auth g]	Multisubunit Na+/H+ antiporter, G subunit	monoatomic cation transmembrane transporter activity metal cation:monoatomic cation antiporter activity proton transmembrane transporter activity sodium:proton antiporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity antiporter activity metal cation:proton antiporter activity active transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity	-	cellular anatomical structure membrane
F, M [auth f]	Multisubunit Na+/H+ antiporter, F subunit	monoatomic cation transmembrane transporter activity metal cation:monoatomic cation antiporter activity proton transmembrane transporter activity sodium:proton antiporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity antiporter activity metal cation:proton antiporter activity active transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity	-	cell periphery cellular anatomical structure plasma membrane membrane
E, L [auth e]	Multisubunit Na+/H+ antiporter, E subunit	monoatomic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity antiporter activity active transmembrane transporter activity secondary active transmembrane transporter activity	-	cell periphery cellular anatomical structure plasma membrane membrane
D, K [auth d]	Multisubunit Na+/H+ antiporter, D subunit	antiporter activity active transmembrane transporter activity transporter activity transmembrane transporter activity secondary active transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity primary active transmembrane transporter activity electron transfer activity active monoatomic ion transmembrane transporter activity NADH dehydrogenase (ubiquinone) activity oxidoreduction-driven active transmembrane transporter activity monoatomic ion transmembrane transporter activity	aerobic respiration cellular respiration oxidative phosphorylation energy derivation by oxidation of organic compounds respiratory electron transport chain ATP synthesis coupled electron transport electron transport chain metabolic process cellular process generation of precursor metabolites and energy	cell periphery cellular anatomical structure plasma membrane membrane
C, J [auth c]	Multisubunit Na+/H+ antiporter, C subunit	-	-	cell periphery cellular anatomical structure plasma membrane membrane
B, I [auth b]	Multisubunit Na+/H+ antiporter, B subunit	-	-	cell periphery cellular anatomical structure plasma membrane membrane
A, H [auth a]	Multisubunit Na+/H+ antiporter, A subunit	antiporter activity active transmembrane transporter activity transporter activity transmembrane transporter activity secondary active transmembrane transporter activity	monoatomic cation transmembrane transport transmembrane transport localization transport proton transmembrane transport monoatomic ion transmembrane transport monoatomic ion transport cellular process monoatomic cation transport establishment of localization sodium ion transport metal ion transport	cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
G, N [auth g]	IPR005133	Na+/H+ antiporter subunit G	Family
F, M [auth f]	IPR007208	Na(+)/H(+) antiporter subunit F-like	Family
E, L [auth e]	IPR002758	Na+/H+ antiporter subunit E	Family
D, K [auth d]	IPR050586	CPA3 Na+/H+ Antiporter Subunit D	Family
D, K [auth d]	IPR003918	NADH:ubiquinone oxidoreductase	Family
D, K [auth d]	IPR001750	NADH:quinone oxidoreductase/Mrp antiporter, transmembrane domain	Domain
C, J [auth c]	IPR039428	NADH-ubiquinone oxidoreductase chain 4L/Mnh complex subunit C1-like	Family
C, J [auth c]	IPR050601	CPA3 antiporter subunit C	Family
B, I [auth b]	IPR050622	CPA3 Na(+)/H(+) Antiporter Subunit B	Family
B, I [auth b]	IPR007182	Na+/H+ antiporter MnhB subunit-related protein	Domain
A, H [auth a]	IPR025383	MrpA C-terminal/MbhD	Domain
A, H [auth a]	IPR050616	CPA3 Na+/H+ Antiporter Subunit A	Family
A, H [auth a]	IPR046806	MrpA C-terminal/MbhE	Domain
A, H [auth a]	IPR001516	NADH-Ubiquinone oxidoreductase (complex I), chain 5 N-terminal	Domain
A, H [auth a]	IPR005663	Monovalent cation proton antiporter subunit A	Family
A, H [auth a]	IPR001750	NADH:quinone oxidoreductase/Mrp antiporter, transmembrane domain	Domain

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D, E A, B, C, D, E, F, G, H [auth a], I [auth b], J [auth c], K [auth d], L [auth e], M [auth f], N [auth g]	OPM	Transmembrane	Alpha-helical polytopic	Electron transport chain complex I (NADH dehydrogenase) and supercomplexes	H+ or Na+ translocating NADH dehydrogenase

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H [auth a], I [auth b], J [auth c], K [auth d], L [auth e], M [auth f], N [auth g]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H [auth a], I [auth b], J [auth c], K [auth d], L [auth e], M [auth f], N [auth g]	MemProtMD	Annotated as membrane protein by MemProtMD

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 [auth a], I [auth b], J [auth c], K [auth d], L [auth e], M [auth f], N [auth g]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Electron Transport Chain Complexes: Complex I	Mrp ancient cation/proton antiporter complex

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.