Annotations: 6MCJ

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	PF09150	e6mcjB1	A: alpha arrays	X: Orange carotenoid protein, N-terminal domain (From Topology)	H: Orange carotenoid protein, N-terminal domain (From Topology)	T: Orange carotenoid protein, N-terminal domain	F: PF09150	ECOD (1.6)
A	PF09150	e6mcjA1	A: alpha arrays	X: Orange carotenoid protein, N-terminal domain (From Topology)	H: Orange carotenoid protein, N-terminal domain (From Topology)	T: Orange carotenoid protein, N-terminal domain	F: PF09150	ECOD (1.6)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.2090.10	Mainly Alpha	Orthogonal Bundle	orange carotenoid protein, domain 2	Orange carotenoid-binding protein, N-terminal domain	CATH (utative)
A	1.10.2090.10	Mainly Alpha	Orthogonal Bundle	orange carotenoid protein, domain 2	Orange carotenoid-binding protein, N-terminal domain	CATH (utative)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Orange carotenoid-binding protein	ion binding binding anion binding chloride ion binding small molecule binding	detection of light stimulus response to light stimulus detection of external stimulus response to stimulus response to external stimulus detection of abiotic stimulus detection of stimulus light absorption response to abiotic stimulus response to radiation cellular process	protein-containing complex intracellular anatomical structure membrane membrane protein complex cellular anatomical entity light-harvesting complex thylakoid membrane intracellular organelle organelle intracellular non-membrane-bounded organelle photosynthetic membrane phycobilisome thylakoid non-membrane-bounded organelle

Chains	Accession	Name	Type
A, B	IPR015233	Orange carotenoid-binding protein, N-terminal	Domain
A, B	IPR036917	Orange carotenoid-binding protein, N-terminal domain superfamily	Homologous Superfamily