Annotations: 3IHB

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	COesterase, BD-FAE	e3ihbB2	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: COesterase, BD-FAE	ECOD (v295.2)
B	Molybdopterin	e3ihbB4	A: alpha arrays	X: Hsp90 co-chaperone CDC37 middle domain	H: Nucleoplasmin-like/VP (viral coat and capsid proteins)	T: Nucleoplasmin-like/VP (viral coat and capsid proteins)	F: Molybdopterin	ECOD (v295.2)
A	COesterase, BD-FAE	e3ihbA2	A: alpha arrays	X: Alpha-beta plaits	H: Phage tail protein-like	T: Transmembrane protein 14A	F: COesterase, BD-FAE	ECOD (v295.2)
A	Molybdopterin	e3ihbA4	A: alpha arrays	X: Hsp90 co-chaperone CDC37 middle domain	H: Nucleoplasmin-like/VP (viral coat and capsid proteins)	T: Nucleoplasmin-like/VP (viral coat and capsid proteins)	F: Molybdopterin	ECOD (v295.2)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.710.10	Alpha Beta	3-Layer(aba) Sandwich	Beta-lactamase	DD-peptidase/beta-lactamase superfamily	CATH (4.3.0)
B	3.30.750.24	Alpha Beta	2-Layer Sandwich	Transcription Regulator spoIIAA	STAS domain	CATH (4.3.0)
A	3.40.710.10	Alpha Beta	3-Layer(aba) Sandwich	Beta-lactamase	DD-peptidase/beta-lactamase superfamily	CATH (4.3.0)
A	3.30.750.24	Alpha Beta	2-Layer Sandwich	Transcription Regulator spoIIAA	STAS domain	CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Salt-tolerant glutaminase	hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amides glutaminase activity hydrolase activity catalytic activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds	catabolic process oxoacid metabolic process carboxylic acid metabolic process L-glutamine catabolic process amino acid metabolic process primary metabolic process L-glutamine metabolic process proteinogenic amino acid metabolic process proteinogenic amino acid catabolic process carboxylic acid catabolic process metabolic process cellular process small molecule metabolic process small molecule catabolic process catabolic process oxoacid metabolic process carboxylic acid metabolic process L-glutamine catabolic process amino acid metabolic process primary metabolic process L-glutamine metabolic process proteinogenic amino acid metabolic process proteinogenic amino acid catabolic process carboxylic acid catabolic process metabolic process cellular process small molecule metabolic process small molecule catabolic process amino acid catabolic process	-

Chains	Accession	Name	Type
A, B	IPR015868	Glutaminase	Family
A, B	IPR036513	STAS domain superfamily	Homologous Superfamily
A, B	IPR012338	Beta-lactamase/transpeptidase-like	Homologous Superfamily
A, B	IPR002645	STAS domain	Domain