Annotations: 4P1N

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Atg1 tMIT	8047171	4005486	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	MIT domain	8103671	3001898	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	MIT domain	8103672	3001898	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	MIT domain	8103672	3001898	SCOP2B (2022-06-29)
C	SCOP2 Family	Atg13 MIM	8103673	4007831	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	Atg13 MIM	8103674	3002804	SCOP2 (2022-06-29)
D	SCOP2B Superfamily	Atg13 MIM	8103674	3002804	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	PF12063	e4p1nA1	A: alpha bundles	X: Spectrin repeat-like	H: MIT domain (From Topology)	T: MIT domain	F: PF12063	ECOD (1.6)
A	PF21127	e4p1nA2	A: alpha bundles	X: Spectrin repeat-like	H: MIT domain (From Topology)	T: MIT domain	F: PF21127	ECOD (1.6)
B	PF12063	e4p1nB1	A: alpha bundles	X: Spectrin repeat-like	H: MIT domain (From Topology)	T: MIT domain	F: PF12063	ECOD (1.6)
B	PF21127	e4p1nB2	A: alpha bundles	X: Spectrin repeat-like	H: MIT domain (From Topology)	T: MIT domain	F: PF21127	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	6.10.140.1900	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
D	6.10.140.1900	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF12063	Atg1-like, MIT domain 1 (ATG1-like_MIT1)	Atg1-like, MIT domain 1	Members of this entry are serine/threonine-protein kinases and includes ATG1 from yeasts, Unc-51 from C. elegans and ULK1-2 from humans. ATG1 is required for vesicle formation in autophagy and the cytoplasm-to-vacuole targeting (Cvt) pathway [1,2]. U ...	Members of this entry are serine/threonine-protein kinases and includes ATG1 from yeasts, Unc-51 from C. elegans and ULK1-2 from humans. ATG1 is required for vesicle formation in autophagy and the cytoplasm-to-vacuole targeting (Cvt) pathway [1,2]. Unc-51 is important for axonal elongation and axonal guidance [4] and ULK1-2 are involved in autophagy in response to starvation [3]. They consist of a kinase domain at the N-terminal (Pfam:PF00069) and two tandem microtubule interacting and transport (MIT) domains (tMIT) at the C-terminal. MIT domains are known to mediate protein-protein interactions. In ATG1, MIT domains mediate the interaction with ATG13 [1]. In ULK1-2, MIT domains control the regulatory function and localization of the proteins and also mediate interactions with additional autophagy proteins [3]. This is the C-terminal MIT domain (MIT2).	Domain
A, B	PF21127	ATG1-like, MIT domain 2 (ATG1-like_MIT2)	ATG1-like, MIT domain 2	Members of this entry are serine/threonine-protein kinases and includes Atg1 from yeasts, Unc-51 from C. elegans and ULK1-2 from humans. Atg1 is required for vesicle formation in autophagy and the cytoplasm-to-vacuole targeting (Cvt) pathway [1,2]. ...	Members of this entry are serine/threonine-protein kinases and includes Atg1 from yeasts, Unc-51 from C. elegans and ULK1-2 from humans. Atg1 is required for vesicle formation in autophagy and the cytoplasm-to-vacuole targeting (Cvt) pathway [1,2]. Unc-51 is important for axonal elongation and axonal guidance [4,5] and ULK1-2 are involved in autophagy in response to starvation [3]. They consist of a kinase domain at the N-terminal (Pfam:PF00069) and two tandem microtubule interacting and transport (MIT) domains (tMIT) at the C-terminal which, in ATG1, mediates the interaction with ATG13 [1]. In ULK1-2, MIT domain control the regulatory function and localization of the proteins and also mediate interactions with additional autophagy proteins [3]. This is the C-terminal MIT domain (MIT2).	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Atg1 tMIT	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding protein serine/threonine kinase activity catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity catalytic activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups protein serine kinase activity	cellular catabolic process catabolic process cellular metabolic process autophagy cellular process metabolic process process utilizing autophagic mechanism protein localization establishment of protein localization cellular localization nitrogen compound transport transport organic substance transport establishment of localization cellular catabolic process catabolic process cellular metabolic process autophagy cellular process metabolic process process utilizing autophagic mechanism protein localization establishment of protein localization cellular localization nitrogen compound transport transport organic substance transport establishment of localization localization protein transport cellular macromolecule localization macromolecule localization phosphorylation phosphate-containing compound metabolic process phosphorus metabolic process regulation of biological process regulation of cellular process biological regulation regulation of cellular metabolic process regulation of catabolic process regulation of autophagy regulation of cellular catabolic process regulation of metabolic process	phagophore assembly site membrane intracellular anatomical structure membrane phagophore assembly site cytoplasm cellular anatomical entity
C, D	Atg13 MIM	-	autophagosome assembly catabolic process organelle assembly vacuole organization macroautophagy cellular metabolic process autophagy autophagosome organization cellular component biogenesis cellular component organization cellular catabolic process organelle organization cellular component assembly cellular process autophagosome assembly catabolic process organelle assembly vacuole organization macroautophagy cellular metabolic process autophagy autophagosome organization cellular component biogenesis cellular component organization cellular catabolic process organelle organization cellular component assembly cellular process metabolic process cellular component organization or biogenesis process utilizing autophagic mechanism protein localization establishment of protein localization cellular localization nitrogen compound transport transport organic substance transport establishment of localization localization protein transport cellular macromolecule localization macromolecule localization	protein kinase complex transferase complex, transferring phosphorus-containing groups protein-containing complex intracellular anatomical structure catalytic complex serine/threonine protein kinase complex Atg1/ULK1 kinase complex cytoplasm cellular anatomical entity transferase complex phagophore assembly site

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR045269	Serine/threonine-protein kinase Atg1-like	Family
A, B	IPR017441	Protein kinase, ATP binding site	Binding Site
A, B	IPR048941	ATG1-like, MIT domain 2	Domain
A, B	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
A, B	IPR022708	Serine/threonine-protein kinase Atg1-like, tMIT domain	Domain
A, B	IPR000719	Protein kinase domain	Domain
A, B	IPR008271	Serine/threonine-protein kinase, active site	Active Site
C, D	IPR036570	HORMA domain superfamily	Homologous Superfamily
C, D	IPR040182	Autophagy-related protein 13	Family
C, D	IPR018731	Autophagy-related protein 13, N-terminal	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.