Annotations: 12AS

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d12asa_	Alpha and beta proteins (a+b)	Class II aaRS and biotin synthetases	Class II aaRS and biotin synthetases	Class II aminoacyl-tRNA synthetase (aaRS)-like, catalytic domain	Asparagine synthetase	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
B	d12asb_	Alpha and beta proteins (a+b)	Class II aaRS and biotin synthetases	Class II aaRS and biotin synthetases	Class II aminoacyl-tRNA synthetase (aaRS)-like, catalytic domain	Asparagine synthetase	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Class II aminoacyl-tRNA synthetase (aaRS)-like, catalytic domain	8023613	4001782	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Class II aaRS and biotin synthetases	8035993	3000058	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Class II aaRS and biotin synthetases	8035993	3000058	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		e12asA1	A: Class II aaRS and biotin synthetases	X: Class II aaRS and biotin synthetases	H: Class II aaRS and biotin synthetases	T: tRNA-synt_His	F:	ECOD (20:10:01)
B		e12asB1	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: Pkinase	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.930.10	Alpha Beta	2-Layer Sandwich	BirA Bifunctional Protein	domain 2	CATH (4.3.0)
B	3.30.930.10	Alpha Beta	2-Layer Sandwich	BirA Bifunctional Protein	domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF03590	Aspartate-ammonia ligase (AsnA)	Aspartate-ammonia ligase		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	ASPARAGINE SYNTHETASE	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding aspartate-ammonia ligase activity acid-ammonia (or amide) ligase activity ammonia ligase activity catalytic activity ligase activity, forming carbon-nitrogen bonds ligase activity identical protein binding protein binding protein homodimerization activity protein dimerization activity	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process L-asparagine biosynthetic process oxoacid metabolic process aspartate family amino acid biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process L-asparagine biosynthetic process oxoacid metabolic process aspartate family amino acid biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process small molecule metabolic process small molecule biosynthetic process carboxylic acid metabolic process L-amino acid biosynthetic process primary metabolic process L-amino acid metabolic process proteinogenic amino acid metabolic process amino acid biosynthetic process asparagine metabolic process biosynthetic process L-asparagine metabolic process proteinogenic amino acid biosynthetic process metabolic process alpha-amino acid biosynthetic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR006195	Aminoacyl-tRNA synthetase, class II	Domain
A, B	IPR045864	Class II Aminoacyl-tRNA synthetase/Biotinyl protein ligase (BPL) and lipoyl protein ligase (LPL)	Homologous Superfamily
A, B	IPR004618	Aspartate--ammonia ligase	Family

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A	aspartate-ammonia ligase M-CSA #75	L-asparagine synthetase in Escherichia coli converts L-aspartate and ammonia to L-asparagine, with the simultaneous hydrolysis of ATP to AMP and diphosphate. The reaction involves the formation of an aminoacyl-adenylate intermediate.	Defined by 6 residues: ASP:A-46ARG:A-100GLN:A-116ASP:A-235GLU:A-248SER:A-251 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 6.3.1.1 (PDB Primary Data) Search M-CSA Motif + EC 6.3.1.1

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