Annotations: 6AIF

Crystal structure of M120A mutant of O-acetylserine sulfhydrylase from Haemophilus influenzae in complex with high affinity inhibitory peptide from serine acetyl transferase of Salmonella typhimurium

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Protein Modification Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Tryptophan synthase beta subunit-like PLP-dependent enzymes	8034161	3001427	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		e6aifA1	A: beta barrels	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F:	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.1100	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00291	Pyridoxal-phosphate dependent enzyme (PALP)	Pyridoxal-phosphate dependent enzyme	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Peptide from Serine acetyltransferase	acetyltransferase activity serine O-acyltransferase activity O-acyltransferase activity acyltransferase activity L-serine O-acetyltransferase activity transferase activity acyltransferase activity, transferring groups other than amino-acyl groups O-acetyltransferase activity catalytic activity amino acid acyltransferase activity	-	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol
A	Cysteine synthase	cysteine synthase activity transferase activity transferase activity, transferring alkyl or aryl (other than methyl) groups catalytic activity carbon-sulfur lyase activity L-cysteine desulfhydrase activity lyase activity	-	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR045304	Serine acetyltransferase, LbH domain	Domain
B	IPR042122	Serine acetyltransferase, N-terminal domain superfamily	Homologous Superfamily
B	IPR011004	Trimeric LpxA-like superfamily	Homologous Superfamily
B	IPR010493	Serine acetyltransferase, N-terminal	Domain
B	IPR005881	Serine O-acetyltransferase	Family
B	IPR053376	Serine acetyltransferase	Family
B	IPR018357	Hexapeptide transferase, conserved site	Conserved Site
B	IPR001451	Hexapeptide repeat	Repeat
A	IPR005856	Cysteine synthase	Family
A	IPR005859	Cysteine synthase CysK	Family
A	IPR036052	Tryptophan synthase beta chain-like, PALP domain superfamily	Homologous Superfamily
A	IPR001926	Tryptophan synthase beta chain-like, PALP domain	Domain
A	IPR001216	Cysteine synthase/cystathionine beta-synthase, pyridoxal-phosphate attachment site	Binding Site
A	IPR050214	Cysteine synthase/Cystathionine beta-synthase	Family

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A	LLP	Parent Component: LYS : AA0119 : N6-pyridoxal phosphate-L-lysine MOD:00128

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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.