Annotations: 3FCH

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	NUDIX	e3fchB1	A: a/b three-layered sandwiches	X: HTH	H: Nudix	T: Nudix	F: NUDIX	ECOD (v294.1)
A	NUDIX	e3fchA1	A: a/b three-layered sandwiches	X: HTH	H: Nudix	T: Nudix	F: NUDIX	ECOD (v294.1)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.30.70.1710	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	BMC (bacterial microcompartment) domain	CATH (4.3.0)
A	3.30.70.1710	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	BMC (bacterial microcompartment) domain	CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Carboxysome shell protein CsoS1D	structural molecule activity structural constituent of carboxysome shell	photosynthesis metabolic process cellular process carbon fixation	intracellular organelle bacterial microcompartment cellular anatomical structure intracellular anatomical structure organelle carboxysome membraneless organelle intracellular membraneless organelle

Chains	Accession	Name	Type
A, B	IPR000249	Bacterial microcompartment domain	Domain
A, B	IPR044870	Bacterial microcompartment (BMC) circularly permuted domain	Domain
A, B	IPR037233	CcmK-like superfamily	Homologous Superfamily

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.

3FCH | pdb_00003fch