4HI4 | pdb_00004hi4

Crystal structure of the 5-coordinate ferric heme-binding PAS domain of Aer2 from P. aeruginosa

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D [auth G]	POTRA	e4hi4G1	A: a/b three-layered sandwiches	X: CCHHC domain	H: CCHHC domain	T: CCHHC domain	F: POTRA	ECOD (v294.1)
C [auth D]	POTRA	e4hi4D1	A: a/b three-layered sandwiches	X: CCHHC domain	H: CCHHC domain	T: CCHHC domain	F: POTRA	ECOD (v294.1)
B	POTRA	e4hi4B1	A: a/b three-layered sandwiches	X: CCHHC domain	H: CCHHC domain	T: CCHHC domain	F: POTRA	ECOD (v294.1)
A	GPW_gp25	e4hi4A1	A: a/b three-layered sandwiches	X: Suppressor of Fused, C-terminal domain	H: HTH	T: winged helix domain	F: GPW_gp25	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D [auth G]	3.30.450.20	Alpha Beta	2-Layer Sandwich	Beta-Lactamase	PAS domain	CATH (4.3.0)
C [auth D]	3.30.450.20	Alpha Beta	2-Layer Sandwich	Beta-Lactamase	PAS domain	CATH (4.3.0)
B	3.30.450.20	Alpha Beta	2-Layer Sandwich	Beta-Lactamase	PAS domain	CATH (4.3.0)
A	3.30.450.20	Alpha Beta	2-Layer Sandwich	Beta-Lactamase	PAS domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C [auth D], D [auth G]	PF13188	PAS domain (PAS_8)	PAS domain	PAS domains are involved in many signalling proteins where they are used as a signal sensor domain [1]. PAS domains appear in archaea, bacteria and eukaryotes. Several PAS-domain proteins are known to detect their signal by way of an associated cofac ...	PAS domains are involved in many signalling proteins where they are used as a signal sensor domain [1]. PAS domains appear in archaea, bacteria and eukaryotes. Several PAS-domain proteins are known to detect their signal by way of an associated cofactor. Heme, flavin, and a 4-hydroxycinnamyl chromophore are used in different proteins. This domain recognises oxygen and CO (Matilla et al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C [auth D], D [auth G]	Aerotaxis transducer Aer2	cation binding ion binding binding metal ion binding small molecule binding identical protein binding protein binding molecular transducer activity transmembrane signaling receptor activity signaling receptor activity	chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion positive chemotaxis aerotaxis energy taxis positive energy taxis positive aerotaxis cellular response to stimulus regulation of biological process regulation of cellular process chemotaxis response to stimulus taxis response to chemical response to external stimulus locomotion positive chemotaxis aerotaxis energy taxis positive energy taxis positive aerotaxis cellular response to stimulus regulation of biological process regulation of cellular process signaling biological regulation cellular process signal transduction cell communication	cell periphery cellular anatomical structure plasma membrane membrane intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C [auth D], D [auth G]	IPR051310	MCP_chemotaxis	Unknown
A, B, C [auth D], D [auth G]	IPR041395	McpB, third HAMP domain	Domain
A, B, C [auth D], D [auth G]	IPR000014	PAS domain	Domain
A, B, C [auth D], D [auth G]	IPR004090	Chemotaxis methyl-accepting receptor	Family
A, B, C [auth D], D [auth G]	IPR003660	HAMP domain	Domain
A, B, C [auth D], D [auth G]	IPR054421	McpB, second HAMP domain	Domain
A, B, C [auth D], D [auth G]	IPR035965	PAS domain superfamily	Homologous Superfamily
A, B, C [auth D], D [auth G]	IPR054324	McpB, first HAMP domain	Domain
A, B, C [auth D], D [auth G]	IPR004089	Methyl-accepting chemotaxis protein (MCP) signalling 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.