Annotations: 4GQY

Crystal structure of CBSX2 in complex with AMP

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
D	d4gqyd_	Alpha and beta proteins (a+b)	CBS-domain pair	CBS-domain pair	automated matches	automated matches	mouse-ear cress,thale-cress (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
C	d4gqyc_	Alpha and beta proteins (a+b)	CBS-domain pair	CBS-domain pair	automated matches	automated matches	mouse-ear cress,thale-cress (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
B	d4gqyb_	Alpha and beta proteins (a+b)	CBS-domain pair	CBS-domain pair	automated matches	automated matches	mouse-ear cress,thale-cress (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
A	d4gqya_	Alpha and beta proteins (a+b)	CBS-domain pair	CBS-domain pair	automated matches	automated matches	mouse-ear cress,thale-cress (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D	V-set	e4gqyD1	A: beta barrels	X: immunoglobulin/albumin-binding domain-like	H: EGF-related	T: Complement control module/SCR domain	F: V-set	ECOD (v294.2)
C	V-set	e4gqyC1	A: beta barrels	X: immunoglobulin/albumin-binding domain-like	H: EGF-related	T: Complement control module/SCR domain	F: V-set	ECOD (v294.2)
B	Ribosomal_L1	e4gqyB2	A: beta barrels	X: Fusion glycoprotein F2	H: RIFT-related	T: double psi	F: Ribosomal_L1	ECOD (v294.2)
A	V-set	e4gqyA1	A: beta barrels	X: immunoglobulin/albumin-binding domain-like	H: EGF-related	T: Complement control module/SCR domain	F: V-set	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	3.10.580.10	Alpha Beta	Roll	CBS-domain	CBS-domain	CATH (4.3.0)
C	3.10.580.10	Alpha Beta	Roll	CBS-domain	CBS-domain	CATH (4.3.0)
B	3.10.580.10	Alpha Beta	Roll	CBS-domain	CBS-domain	CATH (4.3.0)
A	3.10.580.10	Alpha Beta	Roll	CBS-domain	CBS-domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF00571	CBS domain (CBS)	CBS domain	CBS domains are small intracellular modules that pair together to form a stable globular domain [2]. This family represents a single CBS domain. Pairs of these domains have been termed a Bateman domain [6]. CBS domains have been shown to bind ligands ...	CBS domains are small intracellular modules that pair together to form a stable globular domain [2]. This family represents a single CBS domain. Pairs of these domains have been termed a Bateman domain [6]. CBS domains have been shown to bind ligands with an adenosyl group such as AMP, ATP and S-AdoMet [5]. CBS domains are found attached to a wide range of other protein domains suggesting that CBS domains may play a regulatory role making proteins sensitive to adenosyl carrying ligands. The region containing the CBS domains in Cystathionine-beta synthase is involved in regulation by S-AdoMet [4]. CBS domain pairs from AMPK bind AMP or ATP [5]. The CBS domains from IMPDH and the chloride channel CLC2 bind ATP [5].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	CBS domain-containing protein CBSX2, chloroplastic	enzyme regulator activity molecular function regulator activity	cell redox homeostasis cellular homeostasis homeostatic process detection of stimulus response to stimulus response to chemical detection of redox state detection of chemical stimulus response to redox state	cell periphery cellular anatomical structure plasma membrane membrane membrane-bounded organelle intracellular organelle intracellular anatomical structure plastid organelle cytoplasm intracellular membrane-bounded organelle chloroplast plastid stroma chloroplast stroma

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR051462	CBS domain-containing protein	Family
A, B, C, D	IPR046342	CBS domain superfamily	Homologous Superfamily
A, B, C, D	IPR000644	CBS domain	Domain

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.