3P0L

Human steroidogenic acute regulatory protein

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: OPM

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	STAR domain	8085054	4002052	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Bet v1-like	8085055	3000738	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Bet v1-like	8085055	3000738	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Bet v1-like	8085055	3000738	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Bet v1-like	8085055	3000738	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	START	e3p0lA1	A: a+b two layers	X: TBP-like	H: Bet v1-like (From Topology)	T: Bet v1-like	F: START	ECOD (1.6)
B	START	e3p0lB1	A: a+b two layers	X: TBP-like	H: Bet v1-like (From Topology)	T: Bet v1-like	F: START	ECOD (1.6)
C	START	e3p0lC1	A: a+b two layers	X: TBP-like	H: Bet v1-like (From Topology)	T: Bet v1-like	F: START	ECOD (1.6)
D	START	e3p0lD1	A: a+b two layers	X: TBP-like	H: Bet v1-like (From Topology)	T: Bet v1-like	F: START	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.530.20	Alpha Beta	2-Layer Sandwich	Alpha-D-Glucose-1,6-Bisphosphate	Chain A, domain 4	CATH (4.3.0)
B	3.30.530.20	Alpha Beta	2-Layer Sandwich	Alpha-D-Glucose-1,6-Bisphosphate	Chain A, domain 4	CATH (4.3.0)
C	3.30.530.20	Alpha Beta	2-Layer Sandwich	Alpha-D-Glucose-1,6-Bisphosphate	Chain A, domain 4	CATH (4.3.0)
D	3.30.530.20	Alpha Beta	2-Layer Sandwich	Alpha-D-Glucose-1,6-Bisphosphate	Chain A, domain 4	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF01852	START domain (START)	START domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Steroidogenic acute regulatory protein, mitochondrial	sterol transfer activity lipid transporter activity lipid transfer activity transporter activity cholesterol transfer activity sterol binding binding organic cyclic compound binding alcohol binding steroid binding lipid binding cholesterol binding small molecule binding	cellular localization transport intracellular lipid transport organic substance transport intracellular cholesterol 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 localization transport intracellular lipid transport organic substance transport intracellular cholesterol 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 cholesterol transport sterol transport regulation of biosynthetic process regulation of steroid biosynthetic process regulation of biological process regulation of lipid metabolic process steroid metabolic process regulation of steroid metabolic process biological regulation lipid biosynthetic process primary metabolic process regulation of primary metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process organic cyclic compound biosynthetic process organic substance biosynthetic process metabolic process regulation of lipid biosynthetic process steroid biosynthetic process regulation of metabolic process lipid metabolic process cellular metabolic process cellular lipid metabolic process glucocorticoid metabolic process organic hydroxy compound metabolic process sterol metabolic process cholesterol metabolic process alcohol metabolic process secondary alcohol metabolic process small molecule metabolic process regulation of cellular process positive regulation of bile acid biosynthetic process oxoacid metabolic process organic acid metabolic process organic acid biosynthetic process carboxylic acid biosynthetic process positive regulation of metabolic process cellular ketone metabolic process regulation of small molecule metabolic process positive regulation of lipid metabolic process regulation of cellular ketone metabolic process bile acid biosynthetic process positive regulation of bile acid metabolic process regulation of bile acid biosynthetic process regulation of cellular metabolic process positive regulation of steroid biosynthetic process monocarboxylic acid metabolic process cellular biosynthetic process positive regulation of biological process positive regulation of cellular metabolic process regulation of bile acid metabolic process positive regulation of biosynthetic process positive regulation of cellular process monocarboxylic acid biosynthetic process small molecule biosynthetic process carboxylic acid metabolic process regulation of cellular biosynthetic process bile acid metabolic process positive regulation of lipid biosynthetic process organic hydroxy compound biosynthetic process positive regulation of steroid metabolic process positive regulation of small molecule metabolic process positive regulation of cellular biosynthetic process	membrane-bounded organelle intracellular anatomical structure mitochondrial intermembrane space mitochondrion membrane-enclosed lumen cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen organelle envelope lumen intracellular organelle organelle envelope organelle lumen organelle mitochondrial envelope membrane-bounded organelle intracellular anatomical structure mitochondrial intermembrane space mitochondrion membrane-enclosed lumen cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen organelle envelope lumen intracellular organelle organelle envelope organelle lumen organelle mitochondrial envelope cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR000799	Steroidogenic acute regulatory protein-like	Family
A, B, C, D	IPR023393	START-like domain superfamily	Homologous Superfamily
A, B, C, D	IPR002913	START domain	Domain
A, B, C, D	IPR029866	Steroidogenic acute regulatory protein	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D	Pharos: P49675	polycystic ovary syndrome congenital lipoid adrenal hyperplasia due to STAR deficency endometrial carcinoma osteosarcoma X-linked adrenal hypoplasia congenita astrocytic tumor cutaneous lupus erythematosus glioblastoma large cell medulloblastoma malignant glioma nasopharyngeal carcinoma ovarian cancer psoriasis atypical teratoid rhabdoid tumor Disorders of Sex Development polycystic ovary syndrome congenital lipoid adrenal hyperplasia due to STAR deficency endometrial carcinoma osteosarcoma X-linked adrenal hypoplasia congenita astrocytic tumor cutaneous lupus erythematosus glioblastoma large cell medulloblastoma malignant glioma nasopharyngeal carcinoma ovarian cancer psoriasis atypical teratoid rhabdoid tumor Disorders of Sex Development hypertensive disorder malignant mesothelioma oligodendroglioma pilocytic astrocytoma endometrial cancer intellectual disability malignant ependymoma medulloblastoma

Membrane Protein Annotation: OPM OPM Database Homepage

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

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.