Annotations: 4UN1

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D	SWIB	e4un1D1	A: alpha arrays	X: HTH	H: HTH	T: winged helix domain	F: SWIB	ECOD (v295.2)
B	SWIB	e4un1B1	A: alpha arrays	X: HTH	H: HTH	T: winged helix domain	F: SWIB	ECOD (v295.2)
C	SWIB	e4un1C1	A: alpha arrays	X: HTH	H: HTH	T: winged helix domain	F: SWIB	ECOD (v295.2)
A	SWIB	e4un1A1	A: alpha arrays	X: HTH	H: HTH	T: winged helix domain	F: SWIB	ECOD (v295.2)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B, D	PUTATIVE TRANSCRIPTIONAL REGULATOR, ASNC FAMILY	-	heme metabolic process pigment metabolic process porphyrin-containing compound biosynthetic process tetrapyrrole metabolic process heme biosynthetic process pigment biosynthetic process tetrapyrrole biosynthetic process biosynthetic process metabolic process cellular process porphyrin-containing compound metabolic process	-
A, C	PUTATIVE TRANSCRIPTIONAL REGULATOR, ASNC FAMILY	-	heme metabolic process pigment metabolic process porphyrin-containing compound biosynthetic process tetrapyrrole metabolic process heme biosynthetic process pigment biosynthetic process tetrapyrrole biosynthetic process biosynthetic process metabolic process cellular process porphyrin-containing compound metabolic process	-

Chains	Accession	Name	Type
B, D	IPR053953	Siroheme decarboxylase NirL-like, HTH domain	Domain
B, D	IPR050684	Transcriptional regulator Lrp/AsnC/Siroheme decarboxylase	Family
B, D	IPR053431	Siroheme decarboxylase beta subunit-like	Family
B, D	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
B, D	IPR040523	Siroheme decarboxylase , AsnC-like ligand binding domain	Domain
A, C	IPR053429	Siroheme decarboxylase AHBA-like	Family
A, C	IPR053953	Siroheme decarboxylase NirL-like, HTH domain	Domain
A, C	IPR050684	Transcriptional regulator Lrp/AsnC/Siroheme decarboxylase	Family
A, C	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A, C	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
A, C	IPR040523	Siroheme decarboxylase , AsnC-like ligand binding domain	Domain

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.

4UN1 | pdb_00004un1