4UII

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	PF11563	e4uiiB1	A: alpha arrays	X: Globin-like (From Topology)	H: Globin-like (From Topology)	T: Globin-like	F: PF11563	ECOD (1.6)
A	PF11563	e4uiiA1	A: alpha arrays	X: Globin-like (From Topology)	H: Globin-like (From Topology)	T: Globin-like	F: PF11563	ECOD (1.6)

Chains	Accession	Name	Description	Comments	Source
A, B	PF11563	Protoglobin (Protoglobin)	Protoglobin	This family includes protoglobin from Methanosarcina acetivorans C2A. It is also found near the N-terminus of the Haem-based aerotactic transducer HemAT in Bacillus subtilis (Swiss:O07621). It is part of the haemoglobin superfamily. Protoglobin has s ...	This family includes protoglobin from Methanosarcina acetivorans C2A. It is also found near the N-terminus of the Haem-based aerotactic transducer HemAT in Bacillus subtilis (Swiss:O07621). It is part of the haemoglobin superfamily. Protoglobin has specific loops and an amino-terminal extension which leads to the burying of the haem within the matrix of the protein. Protoglobin-specific apolar tunnels allow the access of O2, CO and NO to the haem distal site [1]. In HemAT it acts as an oxygen sensor domain [2]. It can also recognise cyanide (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).	Domain

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	GGDEF DOMAIN PROTEIN	oxygen binding binding small molecule binding transferase activity nucleotidyltransferase activity catalytic activity diguanylate cyclase activity transferase activity, transferring phosphorus-containing groups organic cyclic compound binding tetrapyrrole binding heme binding guanyl nucleotide binding GTP binding nucleotide binding oxygen binding binding small molecule binding transferase activity nucleotidyltransferase activity catalytic activity diguanylate cyclase activity transferase activity, transferring phosphorus-containing groups organic cyclic compound binding tetrapyrrole binding heme binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding cation binding metal ion binding	-	-

Chains	Accession	Name	Type
A, B	IPR000160	GGDEF domain	Domain
A, B	IPR009050	Globin-like superfamily	Homologous Superfamily
A, B	IPR043128	Reverse transcriptase/Diguanylate cyclase domain	Homologous Superfamily
A, B	IPR012292	Globin/Protoglobin	Homologous Superfamily
A, B	IPR044398	Globin-sensor domain	Domain
A, B	IPR048442	DosC, CZB-like middle domain	Domain
A, B	IPR039435	Diguanylate cyclase DosC, globin sensor domain	Domain
A, B	IPR029787	Nucleotide cyclase	Homologous Superfamily