6Y21 | pdb_00006y21

Crystal structure of delta466-491 cystathionine beta-synthase from Toxoplasma gondii with L-Cystathionine

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B [auth A]		e6y21A1	A: a/b three-layered sandwiches	X: CNF1/YfiH-like putative cysteine hydrolases	H: Bromodomain	T: Bromodomain	F:	ECOD (v294.1)
C [auth B]		e6y21B1	A: a/b three-layered sandwiches	X: CNF1/YfiH-like putative cysteine hydrolases	H: Bromodomain	T: Bromodomain	F:	ECOD (v294.1)
A [auth D]	PALP	e6y21D1	A: a/b three-layered sandwiches	X: CNF1/YfiH-like putative cysteine hydrolases	H: Bromodomain	T: Bromodomain	F: PALP	ECOD (v294.1)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth D], B [auth A], C [auth B]	PF00291	Pyridoxal-phosphate dependent enzyme (PALP)	Pyridoxal-phosphate dependent enzyme	-	Family
A [auth D], B [auth A], C [auth B]	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 [auth D], B [auth A], C [auth B]	Cystathionine beta-synthase	cystathionine beta-synthase activity hydro-lyase activity lyase activity catalytic activity carbon-oxygen lyase activity	oxoacid metabolic process sulfur amino acid metabolic process L-cysteine metabolic process L-cysteine biosynthetic process amino acid metabolic process organic acid biosynthetic process organic acid metabolic process alpha-amino acid metabolic process carboxylic acid biosynthetic process small molecule metabolic process sulfur compound metabolic process small molecule biosynthetic process carboxylic acid metabolic process L-amino acid biosynthetic process oxoacid metabolic process sulfur amino acid metabolic process L-cysteine metabolic process L-cysteine biosynthetic process amino acid metabolic process organic acid biosynthetic process organic acid metabolic process alpha-amino acid metabolic process carboxylic acid biosynthetic process small molecule metabolic process sulfur compound metabolic process small molecule biosynthetic process carboxylic acid metabolic process L-amino acid biosynthetic process primary metabolic process L-amino acid metabolic process cysteine metabolic process proteinogenic amino acid metabolic process amino acid biosynthetic process sulfur compound biosynthetic process biosynthetic process proteinogenic amino acid biosynthetic process metabolic process cellular process serine family amino acid biosynthetic process sulfur amino acid biosynthetic process L-cysteine biosynthetic process via L-cystathionine alpha-amino acid biosynthetic process L-serine metabolic process L-cysteine biosynthetic process from L-serine	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth D], B [auth A], C [auth B]	IPR046342	CBS domain superfamily	Homologous Superfamily
A [auth D], B [auth A], C [auth B]	IPR036052	Tryptophan synthase beta chain-like, PALP domain superfamily	Homologous Superfamily
A [auth D], B [auth A], C [auth B]	IPR001926	Tryptophan synthase beta chain-like, PALP domain	Domain
A [auth D], B [auth A], C [auth B]	IPR000644	CBS domain	Domain
A [auth D], B [auth A], C [auth B]	IPR005857	Cystathionine beta-synthase	Family
A [auth D], B [auth A], C [auth B]	IPR001216	Cysteine synthase/cystathionine beta-synthase, pyridoxal-phosphate attachment site	Binding Site
A [auth D], B [auth A], C [auth B]	IPR050214	Cysteine synthase/Cystathionine beta-synthase	Family

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.