Annotations: 3Q2P

Reduced sweetness of a monellin (MNEI) mutant results from increased protein flexibility and disruption of a distant poly-(L-proline) II helix

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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	d3q2pa_	Alpha and beta proteins (a+b)	Cystatin-like	Cystatin/monellin	Monellin	automated matches	Serendipity berry (Dioscoreophyllum cumminsii ) [TaxId: 3457 ], Serendipity berry (Dioscoreophyllum cumminsii ) [TaxId: 3457 ],	SCOPe (2.08)
D	d3q2pd_	Alpha and beta proteins (a+b)	Cystatin-like	Cystatin/monellin	Monellin	automated matches	Serendipity berry (Dioscoreophyllum cumminsii ) [TaxId: 3457 ], Serendipity berry (Dioscoreophyllum cumminsii ) [TaxId: 3457 ],	SCOPe (2.08)
C	d3q2pc_	Alpha and beta proteins (a+b)	Cystatin-like	Cystatin/monellin	Monellin	automated matches	Serendipity berry (Dioscoreophyllum cumminsii ) [TaxId: 3457 ], Serendipity berry (Dioscoreophyllum cumminsii ) [TaxId: 3457 ],	SCOPe (2.08)
B	d3q2pb_	Alpha and beta proteins (a+b)	Cystatin-like	Cystatin/monellin	Monellin	automated matches	Serendipity berry (Dioscoreophyllum cumminsii ) [TaxId: 3457 ], Serendipity berry (Dioscoreophyllum cumminsii ) [TaxId: 3457 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Cystatin/monellin	8043429	3000441	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Cystatin/monellin	8043429	3000441	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Cystatin/monellin	8043429	3000441	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Cystatin/monellin	8043429	3000441	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Cystatin/monellin	8043429	3000441	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Cystatin/monellin	8043429	3000441	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Cystatin/monellin	8043429	3000441	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Cystatin/monellin	8043429	3000441	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	Globin	e3q2pA1	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Globin	ECOD (v294.1)
D	Globin	e3q2pD1	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Globin	ECOD (v294.1)
C	Globin	e3q2pC1	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Globin	ECOD (v294.1)
B	Globin	e3q2pB1	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Globin	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.450.10	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)
D	3.10.450.10	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)
C	3.10.450.10	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)
B	3.10.450.10	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR038580	Monellin, A chain superfamily	Homologous Superfamily
A, B, C, D	IPR015283	Monellin	Family
A, B, C, D	IPR000828	Monellin, A chain	Family
A, B, C, D	IPR046350	Cystatin superfamily	Homologous Superfamily
A, B, C, D	IPR053768	Intense Sweet-Taste Modifier	Homologous Superfamily
A, B, C, D	IPR015283	Monellin	Family
A, B, C, D	IPR046350	Cystatin superfamily	Homologous Superfamily
A, B, C, D	IPR002095	Monellin, B chain	Family

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.