Annotations: 1P3W

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A [auth B]	d1p3wb_	Alpha and beta proteins (a/b)	PLP-dependent transferase-like	PLP-dependent transferases	Cystathionine synthase-like	Cysteine desulfurase IscS	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B [auth A]	d1p3wa_	Alpha and beta proteins (a/b)	PLP-dependent transferase-like	PLP-dependent transferases	Cystathionine synthase-like	Cysteine desulfurase IscS	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth B]	SCOP2B Superfamily	PLP-dependent transferases	8034590	3000954	SCOP2B (2022-06-29)
B [auth A]	SCOP2 Family	Cystathionine synthase-like	8022210	4000672	SCOP2 (2022-06-29)
B [auth A]	SCOP2 Superfamily	PLP-dependent transferases	8034590	3000954	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 [auth B]	PF00266	e1p3wB3	A: a+b two layers	X: C-terminal domain in some PLP-dependent transferases (From Topology)	H: C-terminal domain in some PLP-dependent transferases (From Topology)	T: C-terminal domain in some PLP-dependent transferases	F: PF00266	ECOD (1.6)
A [auth B]	PF00266	e1p3wB2	A: a/b three-layered sandwiches	X: PLP-dependent transferases (From Topology)	H: PLP-dependent transferases (From Topology)	T: PLP-dependent transferases	F: PF00266	ECOD (1.6)
B [auth A]	PF00266	e1p3wA1	A: a+b two layers	X: C-terminal domain in some PLP-dependent transferases (From Topology)	H: C-terminal domain in some PLP-dependent transferases (From Topology)	T: C-terminal domain in some PLP-dependent transferases	F: PF00266	ECOD (1.6)
B [auth A]	PF00266	e1p3wA2	A: a/b three-layered sandwiches	X: PLP-dependent transferases (From Topology)	H: PLP-dependent transferases (From Topology)	T: PLP-dependent transferases	F: PF00266	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth B]	3.90.1150.10	Alpha Beta	Alpha-Beta Complex	Aspartate Aminotransferase, domain 1	Aspartate Aminotransferase, domain 1	CATH (4.3.0)
A [auth B]	3.40.640.10	Alpha Beta	3-Layer(aba) Sandwich	Aspartate Aminotransferase	domain 2	CATH (4.3.0)
B [auth A]	3.90.1150.10	Alpha Beta	Alpha-Beta Complex	Aspartate Aminotransferase, domain 1	Aspartate Aminotransferase, domain 1	CATH (4.3.0)
B [auth A]	3.40.640.10	Alpha Beta	3-Layer(aba) Sandwich	Aspartate Aminotransferase	domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], B [auth A]	PF00266	Aminotransferase class-V (Aminotran_5)	Aminotransferase class-V	This domain is found in amino transferases, and other enzymes including cysteine desulphurase EC:4.4.1.-.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B], B [auth A]	Cysteine desulfurase	cysteine desulfurase activity sulfurtransferase activity transferase activity, transferring sulphur-containing groups transferase activity catalytic activity vitamin binding vitamin B6 binding pyridoxal phosphate binding ion binding binding organic cyclic compound binding anion binding heterocyclic compound binding small molecule binding cysteine desulfurase activity sulfurtransferase activity transferase activity, transferring sulphur-containing groups transferase activity catalytic activity vitamin binding vitamin B6 binding pyridoxal phosphate binding ion binding binding organic cyclic compound binding anion binding heterocyclic compound binding small molecule binding sulfur carrier activity molecular carrier activity iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding metal cluster binding carbon-sulfur lyase activity lyase activity selenocysteine lyase activity cation binding metal ion binding	detection of light stimulus response to light stimulus detection of external stimulus response to stimulus response to external stimulus response to UV detection of abiotic stimulus detection of UV detection of stimulus response to abiotic stimulus response to radiation cellular component biogenesis cellular component organization metallo-sulfur cluster assembly detection of light stimulus response to light stimulus detection of external stimulus response to stimulus response to external stimulus response to UV detection of abiotic stimulus detection of UV detection of stimulus response to abiotic stimulus response to radiation cellular component biogenesis cellular component organization metallo-sulfur cluster assembly cellular component assembly iron-sulfur cluster assembly cellular process cellular component organization or biogenesis catabolic process serine family amino acid metabolic process oxoacid metabolic process L-cysteine catabolic process sulfur amino acid metabolic process L-cysteine metabolic process amino acid metabolic process organic acid catabolic process organic acid metabolic process alpha-amino acid metabolic process cellular catabolic process organic substance metabolic process carboxylic acid catabolic process small molecule metabolic process sulfur compound metabolic process amino acid catabolic process organonitrogen compound catabolic process organonitrogen compound metabolic process cellular metabolic process L-amino acid catabolic process carboxylic acid metabolic process primary metabolic process L-amino acid metabolic process cysteine metabolic process serine family amino acid catabolic process proteinogenic amino acid metabolic process sulfur compound catabolic process alpha-amino acid catabolic process proteinogenic amino acid catabolic process sulfur amino acid catabolic process cysteine catabolic process metabolic process small molecule catabolic process organic substance catabolic process selenocysteine catabolic process selenocysteine metabolic process cellular biosynthetic process organic hydroxy compound metabolic process organonitrogen compound biosynthetic process thiamine-containing compound metabolic process vitamin biosynthetic process alcohol metabolic process thiamine metabolic process thiamine biosynthetic process organic substance biosynthetic process pyrimidine-containing compound biosynthetic process primary alcohol biosynthetic process water-soluble vitamin metabolic process pyrimidine-containing compound metabolic process water-soluble vitamin biosynthetic process small molecule biosynthetic process vitamin metabolic process organic cyclic compound metabolic process sulfur compound biosynthetic process biosynthetic process organic cyclic compound biosynthetic process organic hydroxy compound biosynthetic process alcohol biosynthetic process thiamine-containing compound biosynthetic process primary alcohol metabolic process localization transport sulfur compound transport establishment of localization oxazole or thiazole biosynthetic process oxazole or thiazole metabolic process tRNA thio-modification RNA metabolic process tRNA wobble uridine modification nucleobase-containing compound metabolic process tRNA processing tRNA wobble base modification RNA processing tRNA modification gene expression macromolecule biosynthetic process nucleic acid metabolic process tRNA metabolic process RNA modification ncRNA metabolic process macromolecule modification nucleic acid catabolic process macromolecule metabolic process tRNA wobble position uridine thiolation tRNA 4-thiouridine biosynthesis [2Fe-2S] cluster assembly	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol protein-containing complex catalytic complex sulfurtransferase complex IscS-IscU complex L-cysteine desulfurase complex transferase complex IscS-TusA complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth A]	IPR020578	Aminotransferase class-V, pyridoxal-phosphate binding site	Binding Site
A [auth B], B [auth A]	IPR000192	Aminotransferase class V domain	Domain
A [auth B], B [auth A]	IPR010240	Cysteine desulfurase IscS	Family
A [auth B], B [auth A]	IPR016454	Cysteine desulfurase	Family
A [auth B], B [auth A]	IPR015421	Pyridoxal phosphate-dependent transferase, major domain	Homologous Superfamily
A [auth B], B [auth A]	IPR015422	Pyridoxal phosphate-dependent transferase, small domain	Homologous Superfamily
A [auth B], B [auth A]	IPR015424	Pyridoxal phosphate-dependent transferase	Homologous Superfamily

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.