Annotations: 7P14

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	V-set_1	e7p14B1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Heavy Chain	IGHV1	-	xk-related protein	SAbDab (2025-02-28)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF09815	XK-related protein (XK-related)	XK-related protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	XK-related protein	-	phospholipid translocation transport phospholipid transport plasma membrane phospholipid scrambling cellular component organization localization execution phase of apoptosis phosphatidylserine exposure on apoptotic cell surface plasma membrane organization cellular component organization or biogenesis regulation of biological quality endomembrane system organization membrane organization biological regulation phospholipid translocation transport phospholipid transport plasma membrane phospholipid scrambling cellular component organization localization execution phase of apoptosis phosphatidylserine exposure on apoptotic cell surface plasma membrane organization cellular component organization or biogenesis regulation of biological quality endomembrane system organization membrane organization biological regulation lipid localization lipid transport cell death lipid translocation establishment of localization regulation of membrane lipid distribution macromolecule localization cellular process apoptotic process programmed cell death organophosphate ester transport apoptotic process involved in development developmental process anatomical structure development import into cell vesicle-mediated transport engulfment of apoptotic cell phagocytosis, engulfment membrane invagination phagocytosis apoptotic cell clearance endocytosis plasma membrane invagination	cell periphery cellular anatomical structure plasma membrane membrane
B	Sybody	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR018629	XK-related protein	Family
A	IPR050895	XK-related phospholipid scramblase	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM				KX blood-group antigen family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	XKR Family of Proteins	XKR9 lipid scramblase, full length with synthetic nanobody

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.