Annotations: 6BYM

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	UNK_F_TYPE	e6bymA1	A: a+b two layers	X: TBP-like	H: Bet v1-like (From Topology)	T: Bet v1-like	F: UNK_F_TYPE	ECOD (1.6)
B	UNK_F_TYPE	e6bymB1	A: a+b two layers	X: TBP-like	H: Bet v1-like (From Topology)	T: Bet v1-like	F: UNK_F_TYPE	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF16016	VAD1 Analog of StAR-related lipid transfer domain (VASt)	VAD1 Analog of StAR-related lipid transfer domain	The VASt (VAD1 Analog of StAR-related lipid transfer) domain is conserved across eukaryotes and is structurally related to Bet v1-like domains, including START lipid-binding domains. The 190-amino acid VASt domain is predominantly associated with lip ...	The VASt (VAD1 Analog of StAR-related lipid transfer) domain is conserved across eukaryotes and is structurally related to Bet v1-like domains, including START lipid-binding domains. The 190-amino acid VASt domain is predominantly associated with lipid binding domains such as GRAM Pfam:PF02893, C2 and PH domains. The VASt domain is likely to have a function in binding large hydrophobic ligands and may be specific for sterol [1, 2]. The predicted structure of the VASt domain is a two-layer sandwich alpha beta fold, also called 'helix grip fold', containing three alpha helices (alpha1 to 3), six beta-sheets (beta1 to 6) and two loops (omega1 and 2) numbered from N to C terminus [1]. Some proteins known to contain a VASt domain are : Plant vascular associated death1 (VAD1), a regulator of programmed cell death (PCD) harboring a GRAM putative lipid-binding domain. Yeast SNF1 Interacting Protein 3 (SIP3), may be involved in sterol transfer between intracellular membranes. Yeast Suicide Protein 1 (YSP1), a mitochondrial protein specifically required for the mitochondrial thread-grain transition, de-energization, and the cell death. May be involved in sterol transfer between intracellular membranes. Yeast Suicide Protein 2 (YSP2), a mitochondrial membrane protein involved in mitochondrial fragmentation and may be involved in sterol transfer between intracellular membranes.It is also found in human GramD1a-c.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Sterol-binding protein	sterol binding binding steroid binding lipid binding sterol transfer activity lipid transporter activity lipid transfer activity transporter activity	cellular localization transport intracellular lipid transport lipid localization lipid transport intracellular transport organic hydroxy compound transport intracellular sterol transport establishment of localization localization macromolecule localization establishment of localization in cell cellular process sterol transport	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle cell cortex cortical endoplasmic reticulum organelle subcompartment endomembrane system cell periphery endoplasmic reticulum subcompartment membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle cell cortex cortical endoplasmic reticulum organelle subcompartment endomembrane system cell periphery endoplasmic reticulum subcompartment endoplasmic reticulum endoplasmic reticulum tubular network plasma membrane membrane endoplasmic reticulum-plasma membrane contact site organelle membrane contact site nuclear outer membrane-endoplasmic reticulum membrane network organelle membrane endoplasmic reticulum membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR011993	PH-like domain superfamily	Homologous Superfamily
A, B	IPR031968	VASt domain	Domain
A, B	IPR051482	Cholesterol transport domain-containing protein	Family
A, B	IPR004182	GRAM domain	Domain

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B	OPM	Monotopic/peripheral	Alpha + Beta monotopic/peripheral	Bet v1-like	STAR domain

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.