Annotations: 7RLK

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F	Transthyretin	e7rlkF1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Prealbumin-like	F: Transthyretin	ECOD (1.6)
E	Transthyretin	e7rlkE1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Prealbumin-like	F: Transthyretin	ECOD (1.6)
D	Transthyretin	e7rlkD1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Prealbumin-like	F: Transthyretin	ECOD (1.6)
C	Transthyretin	e7rlkC1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Prealbumin-like	F: Transthyretin	ECOD (1.6)
B	Transthyretin	e7rlkB1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Prealbumin-like	F: Transthyretin	ECOD (1.6)
A	Transthyretin	e7rlkA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Prealbumin-like	F: Transthyretin	ECOD (1.6)

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F	PF00576	HIUase/Transthyretin family (Transthyretin)	HIUase/Transthyretin family	This family includes transthyretin that is a thyroid hormone-binding protein that transports thyroxine from the bloodstream to the brain. However, most of the sequences listed in this family do not bind thyroid hormones. They are actually enzymes of ...	This family includes transthyretin that is a thyroid hormone-binding protein that transports thyroxine from the bloodstream to the brain. However, most of the sequences listed in this family do not bind thyroid hormones. They are actually enzymes of the purine catabolism that catalyse the conversion of 5-hydroxyisourate (HIU) to OHCU [2,3]. HIU hydrolysis is the original function of the family and is conserved from bacteria to mammals; transthyretins arose by gene duplications in the vertebrate lineage [4]. HIUases are distinguished in the alignment from the conserved C-terminal YRGS sequence.	Domain

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F	Transthyretin	hormone activity protein binding binding molecular function activator activity signaling receptor binding molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity thyroid hormone binding hormone binding	nucleobase-containing compound metabolic process purine nucleobase metabolic process nucleobase-containing small molecule metabolic process nucleobase metabolic process small molecule metabolic process metabolic process cellular process primary metabolic process purine-containing compound metabolic process	cellular anatomical structure extracellular region extracellular space

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F	IPR023416	Transthyretin/hydroxyisourate hydrolase domain	Domain
A, B, C, D, E A, B, C, D, E, F	IPR036817	Transthyretin/hydroxyisourate hydrolase domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR023418	Transthyretin, thyroxine binding site	Binding Site
A, B, C, D, E A, B, C, D, E, F	IPR000895	Transthyretin/hydroxyisourate hydrolase	Family
A, B, C, D, E A, B, C, D, E, F	IPR023419	Transthyretin, conserved site	Conserved Site