Annotations: 6REU

Cryo-EM structure of Polytomella F-ATP synthase, Rotary substate 3C, focussed refinement of F1 head and rotor

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
N [auth S]	SCOP2B Superfamily	ATP synthase gamma subunit-like	8099504	3000451	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)
T [auth Z]	AAA	e6reuZ1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: AAA	ECOD (v295)
S [auth Y]	AAA	e6reuY1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: AAA	ECOD (v295)
R [auth X]	AAA	e6reuX1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: AAA	ECOD (v295)
Q [auth V]	AAA	e6reuV1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: AAA	ECOD (v295)
P [auth U]	AAA	e6reuU1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: AAA	ECOD (v295)
O [auth T]	KR	e6reuT1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
N [auth S]	KR	e6reuS1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
M [auth R]	AAA	e6reuR1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: AAA	ECOD (v295)
L [auth Q]	KR	e6reuQ1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
K [auth P]	KR	e6reuP1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
J	KR	e6reuJ1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
I	KR	e6reuI1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
H	KR	e6reuH1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
G	KR	e6reuG1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
F	KR	e6reuF1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
E	KR	e6reuE1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
D	KR	e6reuD1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
C	KR	e6reuC1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
B	KR	e6reuB1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)
A	KR	e6reuA1	A: alpha arrays	X: Ten stranded beta/alpha barrel	H: Ten stranded beta/alpha barrel	T: Ten stranded beta/alpha barrel	F: KR	ECOD (v295)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
R [auth X], S [auth Y], T [auth Z]	ATP synthase subunit beta	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding hydrolase activity catalytic activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity monoatomic ion channel activity proton channel activity proton-transporting ATP synthase activity, rotational mechanism monoatomic cation channel activity passive transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity ligase activity cation binding metal ion binding	ribose phosphate metabolic process aerobic respiration cellular respiration oxidative phosphorylation ATP metabolic process energy derivation by oxidation of organic compounds ATP biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside triphosphate biosynthetic process proton motive force-driven ATP synthesis nucleobase-containing compound metabolic process ribonucleotide biosynthetic process purine nucleotide metabolic process ribose phosphate metabolic process aerobic respiration cellular respiration oxidative phosphorylation ATP metabolic process energy derivation by oxidation of organic compounds ATP biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside triphosphate biosynthetic process proton motive force-driven ATP synthesis nucleobase-containing compound metabolic process ribonucleotide biosynthetic process purine nucleotide metabolic process ribonucleotide metabolic process purine nucleoside triphosphate biosynthetic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process purine ribonucleoside triphosphate metabolic process small molecule metabolic process phosphorus metabolic process ribose phosphate biosynthetic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process purine nucleoside triphosphate metabolic process nucleoside triphosphate biosynthetic process primary metabolic process generation of precursor metabolites and energy nucleotide metabolic process nucleobase-containing compound biosynthetic process ribonucleoside triphosphate biosynthetic process purine-containing compound metabolic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process proton motive force-driven mitochondrial ATP synthesis metabolic process cellular process nucleoside triphosphate metabolic process purine ribonucleotide metabolic process purine nucleotide biosynthetic process	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex proton-transporting ATP synthase complex membrane protein complex cation channel complex transporter complex proton-transporting two-sector ATPase complex transmembrane transporter complex monoatomic ion channel complex
O [auth T], P [auth U], Q [auth V]	ATP synthase subunit alpha	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding ADP binding hydrolase activity catalytic activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity monoatomic ion channel activity proton channel activity proton-transporting ATP synthase activity, rotational mechanism monoatomic cation channel activity passive transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity ligase activity cation binding metal ion binding	-	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex proton-transporting ATP synthase complex membrane protein complex cation channel complex transporter complex proton-transporting two-sector ATPase complex transmembrane transporter complex monoatomic ion channel complex
N [auth S]	ATP synthase gamma chain, mitochondrial	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity monoatomic ion channel activity proton channel activity proton-transporting ATP synthase activity, rotational mechanism monoatomic cation channel activity passive transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity catalytic activity ligase activity	-	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex proton-transporting ATP synthase complex membrane protein complex cation channel complex transporter complex proton-transporting two-sector ATPase complex transmembrane transporter complex monoatomic ion channel complex
M [auth R]	Mitochondrial ATP synthase subunit delta	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity monoatomic ion channel activity proton channel activity proton-transporting ATP synthase activity, rotational mechanism monoatomic cation channel activity passive transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity catalytic activity ligase activity	-	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex proton-transporting ATP synthase complex membrane protein complex cation channel complex transporter complex proton-transporting two-sector ATPase complex transmembrane transporter complex monoatomic ion channel complex
L [auth Q]	epsilon: Polytomella F-ATP synthase epsilon subunit	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity monoatomic ion channel activity proton channel activity proton-transporting ATP synthase activity, rotational mechanism monoatomic cation channel activity passive transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity catalytic activity ligase activity	ribose phosphate metabolic process aerobic respiration cellular respiration oxidative phosphorylation ATP metabolic process energy derivation by oxidation of organic compounds ATP biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside triphosphate biosynthetic process proton motive force-driven ATP synthesis nucleobase-containing compound metabolic process ribonucleotide biosynthetic process purine nucleotide metabolic process ribose phosphate metabolic process aerobic respiration cellular respiration oxidative phosphorylation ATP metabolic process energy derivation by oxidation of organic compounds ATP biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside triphosphate biosynthetic process proton motive force-driven ATP synthesis nucleobase-containing compound metabolic process ribonucleotide biosynthetic process purine nucleotide metabolic process ribonucleotide metabolic process purine nucleoside triphosphate biosynthetic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process purine ribonucleoside triphosphate metabolic process small molecule metabolic process phosphorus metabolic process ribose phosphate biosynthetic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process purine nucleoside triphosphate metabolic process nucleoside triphosphate biosynthetic process primary metabolic process generation of precursor metabolites and energy nucleotide metabolic process nucleobase-containing compound biosynthetic process ribonucleoside triphosphate biosynthetic process purine-containing compound metabolic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process proton motive force-driven mitochondrial ATP synthesis metabolic process cellular process nucleoside triphosphate metabolic process purine ribonucleotide metabolic process purine nucleotide biosynthetic process	membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm membrane-bounded organelle mitochondrial membrane intracellular anatomical structure organelle inner membrane mitochondrion membrane intracellular membrane-bounded organelle mitochondrial inner membrane intracellular organelle organelle envelope cellular anatomical structure organelle mitochondrial envelope cytoplasm organelle membrane respiratory chain complex protein-containing complex catalytic complex proton-transporting ATP synthase complex membrane protein complex cation channel complex transporter complex proton-transporting two-sector ATPase complex transmembrane transporter complex monoatomic ion channel complex
K [auth P]	Mitochondrial ATP synthase subunit OSCP	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity monoatomic ion channel activity proton channel activity proton-transporting ATP synthase activity, rotational mechanism monoatomic cation channel activity passive transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity catalytic activity ligase activity	-	cellular anatomical structure membrane
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	Mitochondrial ATP synthase subunit c	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity binding lipid binding	ribose phosphate metabolic process ATP metabolic process ATP biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside triphosphate biosynthetic process proton motive force-driven ATP synthesis nucleobase-containing compound metabolic process ribonucleotide biosynthetic process purine nucleotide metabolic process ribonucleotide metabolic process purine nucleoside triphosphate biosynthetic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process ribose phosphate metabolic process ATP metabolic process ATP biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside triphosphate biosynthetic process proton motive force-driven ATP synthesis nucleobase-containing compound metabolic process ribonucleotide biosynthetic process purine nucleotide metabolic process ribonucleotide metabolic process purine nucleoside triphosphate biosynthetic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process purine ribonucleoside triphosphate metabolic process small molecule metabolic process phosphorus metabolic process ribose phosphate biosynthetic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process purine nucleoside triphosphate metabolic process nucleoside triphosphate biosynthetic process primary metabolic process nucleotide metabolic process nucleobase-containing compound biosynthetic process ribonucleoside triphosphate biosynthetic process purine-containing compound metabolic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process metabolic process cellular process nucleoside triphosphate metabolic process purine ribonucleotide metabolic process purine nucleotide biosynthetic process	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle protein-containing complex proton-transporting two-sector ATPase complex membrane membrane protein complex proton-transporting two-sector ATPase complex, proton-transporting domain respiratory chain complex membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle protein-containing complex proton-transporting two-sector ATPase complex membrane membrane protein complex proton-transporting two-sector ATPase complex, proton-transporting domain respiratory chain complex catalytic complex proton-transporting ATP synthase complex cation channel complex transporter complex transmembrane transporter complex monoatomic ion channel complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
R [auth X], S [auth Y], T [auth Z]	IPR004100	ATPase, F1/V1/A1 complex, alpha/beta subunit, N-terminal domain	Domain
R [auth X], S [auth Y], T [auth Z]	IPR024034	ATPase, F1/V1 complex, beta/alpha subunit, C-terminal	Homologous Superfamily
R [auth X], S [auth Y], T [auth Z]	IPR036121	ATPase, F1/V1/A1 complex, alpha/beta subunit, N-terminal domain superfamily	Homologous Superfamily
R [auth X], S [auth Y], T [auth Z]	IPR020003	ATPase, alpha/beta subunit, nucleotide-binding domain, active site	Active Site
R [auth X], S [auth Y], T [auth Z]	IPR050053	ATPase alpha/beta chains	Family
R [auth X], S [auth Y], T [auth Z]	IPR000194	ATPase, F1/V1/A1 complex, alpha/beta subunit, nucleotide-binding domain	Domain
R [auth X], S [auth Y], T [auth Z]	IPR055190	ATP synthase A/B type, C-terminal domain	Domain
R [auth X], S [auth Y], T [auth Z]	IPR003593	AAA+ ATPase domain	Domain
R [auth X], S [auth Y], T [auth Z]	IPR005722	ATP synthase, F1 complex, beta subunit	Family
R [auth X], S [auth Y], T [auth Z]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
O [auth T], P [auth U], Q [auth V]	IPR038376	ATP synthase, alpha subunit, C-terminal domain superfamily	Homologous Superfamily
O [auth T], P [auth U], Q [auth V]	IPR004100	ATPase, F1/V1/A1 complex, alpha/beta subunit, N-terminal domain	Domain
O [auth T], P [auth U], Q [auth V]	IPR033732	ATP synthase, F1 complex, alpha subunit nucleotide-binding domain	Domain
O [auth T], P [auth U], Q [auth V]	IPR036121	ATPase, F1/V1/A1 complex, alpha/beta subunit, N-terminal domain superfamily	Homologous Superfamily
O [auth T], P [auth U], Q [auth V]	IPR023366	ATP synthase subunit alpha, N-terminal domain-like superfamily	Homologous Superfamily
O [auth T], P [auth U], Q [auth V]	IPR000793	ATP synthase, alpha subunit, C-terminal	Domain
O [auth T], P [auth U], Q [auth V]	IPR020003	ATPase, alpha/beta subunit, nucleotide-binding domain, active site	Active Site
O [auth T], P [auth U], Q [auth V]	IPR000194	ATPase, F1/V1/A1 complex, alpha/beta subunit, nucleotide-binding domain	Domain
O [auth T], P [auth U], Q [auth V]	IPR005294	ATP synthase, F1 complex, alpha subunit	Family
O [auth T], P [auth U], Q [auth V]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
N [auth S]	IPR023632	ATP synthase, F1 complex, gamma subunit conserved site	Conserved Site
N [auth S]	IPR000131	ATP synthase, F1 complex, gamma subunit	Family
N [auth S]	IPR035968	ATP synthase, F1 complex, gamma subunit superfamily	Homologous Superfamily
M [auth R]	IPR036771	F0F1 ATP synthase delta/epsilon subunit, N-terminal	Homologous Superfamily
M [auth R]	IPR020546	ATP synthase, F1 complex, delta/epsilon subunit, N-terminal	Domain
M [auth R]	IPR001469	ATP synthase, F1 complex, delta/epsilon subunit	Family
L [auth Q]	IPR036742	ATP synthase, F1 complex, epsilon subunit superfamily, mitochondrial	Homologous Superfamily
L [auth Q]	IPR006721	ATP synthase, F1 complex, epsilon subunit, mitochondrial	Family
K [auth P]	IPR020781	ATPase, OSCP/delta subunit, conserved site	Conserved Site
K [auth P]	IPR000711	ATPase, OSCP/delta subunit	Family
K [auth P]	IPR026015	F1F0 ATP synthase OSCP/delta subunit, N-terminal domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR035921	F/V-ATP synthase subunit C superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR038662	F1F0 ATP synthase subunit C superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR020537	ATP synthase, F0 complex, subunit C, DCCD-binding site	Binding Site
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR000454	ATP synthase, F0 complex, subunit C	Family
A, B, C, D, E A, B, C, D, E, F, G, H, I, J	IPR002379	V-ATPase proteolipid subunit C-like domain	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, I, J, K [auth P], M [auth R], N [auth S], O [auth T], P [auth U], Q [auth V], R [auth X], S [auth Y], T [auth Z]	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, I, J, K [auth P], M [auth R], N [auth S], O [auth T], P [auth U], Q [auth V], R [auth X], S [auth Y], T [auth Z]	MemProtMD	Annotated as membrane protein by MemProtMD