Annotations: 2QO3

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	KASAT domain-like	8045094	4004293	SCOP2 (2022-06-29)
A	SCOP2 Family	Thiolase-related	8055828	4000245	SCOP2 (2022-06-29)
A	SCOP2 Family	FabD-like	8055830	4003614	SCOP2 (2022-06-29)
A	SCOP2 Family	Probable ACP-binding domain of malonyl-CoA ACP transacylase	8055832	4001289	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	KASAT domain-like	8055827	3002319	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Thiolase-like	8055829	3000122	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	FabD/lysophospholipase-like	8055831	3001121	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Probable ACP-binding domain of malonyl-CoA ACP transacylase	8055834	3001224	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Probable ACP-binding domain of malonyl-CoA ACP transacylase	8055834	3001224	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	FabD/lysophospholipase-like	8055831	3001121	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	KASAT domain-like	8055827	3002319	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	FabD/lysophospholipase-like	8055831	3001121	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Thiolase-like	8055829	3000122	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	KASAT domain-like	8055827	3002319	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	Acyl_transf_1_2nd_1	e2qo3A4	A: a+b two layers	X: Alpha-beta plaits	H: Probable ACP-binding domain of malonyl-CoA ACP transacylase (From Topology)	T: Probable ACP-binding domain of malonyl-CoA ACP transacylase	F: Acyl_transf_1_2nd_1	ECOD (1.6)
A	PksD_2	e2qo3A5	A: a+b two layers	X: KS-MAT linker domain in fatty acid synthase (From Topology)	H: KS-MAT linker domain in fatty acid synthase (From Topology)	T: KS-MAT linker domain in fatty acid synthase	F: PksD_2	ECOD (1.6)
A	PksD,Acyl_transf_1_1st	e2qo3A7	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: FabD/lysophospholipase-like	F: PksD,Acyl_transf_1_1st	ECOD (1.6)
A	ketoacyl-synt	e2qo3A1	A: a/b three-layered sandwiches	X: Thiolase-like (From Topology)	H: Thiolase-like (From Topology)	T: Thiolase-like	F: ketoacyl-synt	ECOD (1.6)
A	Ketoacyl-synt_C	e2qo3A6	A: a/b three-layered sandwiches	X: Thiolase-like (From Topology)	H: Thiolase-like (From Topology)	T: Thiolase-like	F: Ketoacyl-synt_C	ECOD (1.6)
B	Acyl_transf_1_2nd_1	e2qo3B3	A: a+b two layers	X: Alpha-beta plaits	H: Probable ACP-binding domain of malonyl-CoA ACP transacylase (From Topology)	T: Probable ACP-binding domain of malonyl-CoA ACP transacylase	F: Acyl_transf_1_2nd_1	ECOD (1.6)
B	PksD_2	e2qo3B4	A: a+b two layers	X: KS-MAT linker domain in fatty acid synthase (From Topology)	H: KS-MAT linker domain in fatty acid synthase (From Topology)	T: KS-MAT linker domain in fatty acid synthase	F: PksD_2	ECOD (1.6)
B	PksD,Acyl_transf_1_1st	e2qo3B6	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: FabD/lysophospholipase-like	F: PksD,Acyl_transf_1_1st	ECOD (1.6)
B	ketoacyl-synt	e2qo3B5	A: a/b three-layered sandwiches	X: Thiolase-like (From Topology)	H: Thiolase-like (From Topology)	T: Thiolase-like	F: ketoacyl-synt	ECOD (1.6)
B	Ketoacyl-synt_C	e2qo3B2	A: a/b three-layered sandwiches	X: Thiolase-like (From Topology)	H: Thiolase-like (From Topology)	T: Thiolase-like	F: Ketoacyl-synt_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.47.10	Alpha Beta	3-Layer(aba) Sandwich	Peroxisomal Thiolase	Chain A, domain 1	CATH (4.3.0)
A	3.30.70.3290	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
A	3.40.366.10	Alpha Beta	3-Layer(aba) Sandwich	Malonyl-Coenzyme A Acyl Carrier Protein	domain 2	CATH (4.3.0)
B	3.40.47.10	Alpha Beta	3-Layer(aba) Sandwich	Peroxisomal Thiolase	Chain A, domain 1	CATH (4.3.0)
B	3.30.70.3290	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
B	3.40.366.10	Alpha Beta	3-Layer(aba) Sandwich	Malonyl-Coenzyme A Acyl Carrier Protein	domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02801	Beta-ketoacyl synthase, C-terminal domain (Ketoacyl-synt_C)	Beta-ketoacyl synthase, C-terminal domain	The structure of beta-ketoacyl synthase is similar to that of the thiolase family (Pfam:PF00108) and also chalcone synthase. The active site of beta-ketoacyl synthase is located between the N and C-terminal domains.	Domain
A, B	PF00109	Beta-ketoacyl synthase, N-terminal domain (ketoacyl-synt)	Beta-ketoacyl synthase, N-terminal domain	The structure of beta-ketoacyl synthase is similar to that of the thiolase family (Pfam:PF00108) and also chalcone synthase. The active site of beta-ketoacyl synthase is located between the N and C-terminal domains. The N-terminal domain contains m ...	The structure of beta-ketoacyl synthase is similar to that of the thiolase family (Pfam:PF00108) and also chalcone synthase. The active site of beta-ketoacyl synthase is located between the N and C-terminal domains. The N-terminal domain contains most of the structures involved in dimer formation and also the active site cysteine [1].	Domain
A, B	PF16197	Ketoacyl-synthetase C-terminal extension (KAsynt_C_assoc)	Ketoacyl-synthetase C-terminal extension	-	Family
A, B	PF00698	Acyl transferase domain (Acyl_transf_1)	Acyl transferase domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	EryAII Erythromycin polyketide synthase modules 3 and 4	oxidoreductase activity catalytic activity vitamin binding amide binding modified amino acid binding binding phosphopantetheine binding small molecule binding acyltransferase activity 3-oxoacyl-[acyl-carrier-protein] synthase activity acyltransferase activity, transferring groups other than amino-acyl groups transferase activity erythronolide synthase activity fatty acid synthase activity	cellular component biogenesis cellular component organization peptidoglycan-based cell wall biogenesis cellular component assembly cell wall biogenesis DIM/DIP cell wall layer assembly cell wall organization or biogenesis cellular process Actinobacterium-type cell wall biogenesis cellular component organization or biogenesis fatty acid metabolic process monocarboxylic acid biosynthetic process small molecule biosynthetic process oxoacid metabolic process cellular component biogenesis cellular component organization peptidoglycan-based cell wall biogenesis cellular component assembly cell wall biogenesis DIM/DIP cell wall layer assembly cell wall organization or biogenesis cellular process Actinobacterium-type cell wall biogenesis cellular component organization or biogenesis fatty acid metabolic process monocarboxylic acid biosynthetic process small molecule biosynthetic process oxoacid metabolic process carboxylic acid metabolic process lipid biosynthetic process primary metabolic process organic acid biosynthetic process organic acid metabolic process fatty acid biosynthetic process carboxylic acid biosynthetic process biosynthetic process small molecule metabolic process metabolic process monocarboxylic acid metabolic process lipid metabolic process macrolide biosynthetic process polyketide metabolic process macrolide metabolic process secondary metabolic process antibiotic biosynthetic process antibiotic metabolic process polyketide biosynthetic process secondary metabolite biosynthetic process lactone metabolic process lactone biosynthetic process	cell periphery cellular anatomical structure plasma membrane membrane intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR016035	Acyl transferase/acyl hydrolase/lysophospholipase	Homologous Superfamily
A, B	IPR014031	Beta-ketoacyl synthase, C-terminal	Domain
A, B	IPR006162	Phosphopantetheine attachment site	PTM
A, B	IPR013154	Alcohol dehydrogenase-like, N-terminal	Domain
A, B	IPR020807	Polyketide synthase, dehydratase domain	Domain
A, B	IPR036347	Erythronolide synthase, docking domain superfamily	Homologous Superfamily
A, B	IPR049552	Polyketide synthase, dehydratase domain, N-terminal	Domain
A, B	IPR049551	Polyketide synthase, dehydratase domain, C-terminal	Domain
A, B	IPR020843	Polyketide synthase, enoylreductase domain	Domain
A, B	IPR013968	Polyketide synthase, ketoreductase domain	Domain
A, B	IPR016036	Malonyl-CoA ACP transacylase, ACP-binding	Homologous Superfamily
A, B	IPR050091	Polyketide and Nonribosomal Peptide Biosynthesis Enzymes	Family
A, B	IPR020841	Polyketide synthase, beta-ketoacyl synthase domain	Domain
A, B	IPR036736	ACP-like superfamily	Homologous Superfamily
A, B	IPR014043	Acyl transferase domain	Domain
A, B	IPR015083	Polyketide synthase, docking domain	Domain
A, B	IPR032821	Polyketide synthase, C-terminal extension	Domain
A, B	IPR011032	GroES-like superfamily	Homologous Superfamily
A, B	IPR009081	Phosphopantetheine binding ACP domain	Domain
A, B	IPR020806	Polyketide synthase-like, phosphopantetheine-binding domain	Domain
A, B	IPR016039	Thiolase-like	Homologous Superfamily
A, B	IPR001227	Acyl transferase domain superfamily	Homologous Superfamily
A, B	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily
A, B	IPR018201	Beta-ketoacyl synthase, active site	Active Site
A, B	IPR014030	Beta-ketoacyl synthase-like, N-terminal	Domain
A, B	IPR042104	Polyketide synthase, dehydratase domain superfamily	Homologous Superfamily
A, B	IPR049900	Polyketide/metazoan fatty acid synthase, dehydratase domain	Domain
A, B	IPR055123	Polyketide synthase extender module SpnB-like, Rossmann fold domain	Domain
A, B	IPR015357	Erythronolide synthase, docking	Domain

2QO3

Crystal Structure of [KS3][AT3] didomain from module 3 of 6-deoxyerthronolide B synthase

External Resource: Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Domain Annotation: ECOD Classification ECOD Database Homepage

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage

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2QO3

Crystal Structure of [KS3][AT3] didomain from module 3 of 6-deoxyerthronolide B synthase

External Resource: Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Domain Annotation: ECOD Classification ECOD Database Homepage

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage