Annotations: 1PT4

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1pt4a_	Small proteins	Knottins (small inhibitors, toxins, lectins)	Cyclotides	Kalata B1	Kalata B1	(Oldenlandia affinis ) [TaxId: 60225 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Kalata B1	8082212	4003066	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Cyclotides	8082213	3000228	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)
A	Cyclotide	e1pt4A1	A: few secondary structure elements	X: omega toxin-like	H: omega toxin-related	T: Cyclotides	F: Cyclotide	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF03784	Cyclotide family (Cyclotide)	Cyclotide family	This family contains a set of cyclic peptides with a variety of activities. The structure consists of a distorted triple-stranded beta-sheet and a cysteine-knot arrangement of the disulfide bonds [2]. Cyclotides can be separated into two subfamilies, ...	This family contains a set of cyclic peptides with a variety of activities. The structure consists of a distorted triple-stranded beta-sheet and a cysteine-knot arrangement of the disulfide bonds [2]. Cyclotides can be separated into two subfamilies, namely bracelet and moebius. The bracelet cyclotide subfamily tends to contain a larger number of positively charged residues and has a bracelet-like circularisation of the backbone [2]. The moebius cyclotide subfamily contains a backbone twist due to a cis-Pro peptide bond and may conceptually be regarded as a molecular Moebius strip [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	kalata B2	-	response to stimulus defense response response to stress biological process involved in interspecies interaction between organisms cellular process disruption of cell in another organism disruption of anatomical structure in another organism killing of cells of another organism cell killing	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR005535	Cyclotide	Family
A	IPR012324	Cyclotide, moebius, conserved site	Conserved Site
A	IPR036146	Cyclotide superfamily	Homologous Superfamily

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM	Monotopic/peripheral	All beta monotopic/peripheral	Omega conotoxin-like knottin	Cyclotide

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.