Annotations: 4R12

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Peptidase_M28	e4r12A2	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Zn-dependent exopeptidases (From Topology)	T: Zn-dependent exopeptidases	F: Peptidase_M28	ECOD (1.6)
A	M28_Nicastrin	e4r12A1	A: a/b three-layered sandwiches	X: The swivelling beta/beta/alpha domains	H: The swivelling beta/beta/alpha domain (From Topology)	T: The swivelling beta/beta/alpha domain	F: M28_Nicastrin	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF05450	Nicastrin large lobe (Nicastrin)	Nicastrin large lobe	Nicastrin and presenilin are two major components of the gamma-secretase complex, which executes the intramembrane proteolysis of type I integral membrane proteins such as the amyloid precursor protein (APP) and Notch. Nicastrin is synthesised in fi ...	Nicastrin and presenilin are two major components of the gamma-secretase complex, which executes the intramembrane proteolysis of type I integral membrane proteins such as the amyloid precursor protein (APP) and Notch. Nicastrin is synthesised in fibroblasts and neurons as an endoglycosidase-H-sensitive glycosylated precursor protein (immature nicastrin) and is then modified by complex glycosylation in the Golgi apparatus and by sialylation in the trans-Golgi network (mature nicastrin) [1]. A region featured in this family has a fold similar to human transferrin receptor (TfR, Swiss:P02786) and a bacterial aminopeptidase (Swiss:P80561). It is implicated in the pathogenesis of Alzheimer's disease [4].	Domain
A	PF18266	Nicastrin small lobe (Ncstrn_small)	Nicastrin small lobe	This domain is part of the protein Nicastrin, a component of gamma secretase present in Homo sapiens. Gamma-secretase is thought to contribute to Alzheimer's disease development by generating beta-amyloid peptides. This domain is the known as the sma ...	This domain is part of the protein Nicastrin, a component of gamma secretase present in Homo sapiens. Gamma-secretase is thought to contribute to Alzheimer's disease development by generating beta-amyloid peptides. This domain is the known as the small lobe which forms the 'lid'. The lid is an extended surface loop that covers the hydrophilic pocket that is thought to be responsible for substrate recruitment. On substrate binding, the large lobe is thought to rotate relative to the small lobe [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Putative uncharacterized protein	-	developmental process cellular developmental process biological process involved in intraspecies interaction between organisms sorocarp spore cell differentiation sorocarp development cell differentiation culmination involved in sorocarp development anatomical structure development cellular process socially cooperative development sorocarp sorus development primary metabolic process gene expression macromolecule biosynthetic process developmental process cellular developmental process biological process involved in intraspecies interaction between organisms sorocarp spore cell differentiation sorocarp development cell differentiation culmination involved in sorocarp development anatomical structure development cellular process socially cooperative development sorocarp sorus development primary metabolic process gene expression macromolecule biosynthetic process protein maturation biosynthetic process proteolysis protein processing metabolic process protein metabolic process macromolecule metabolic process cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation cell communication Notch signaling pathway signal transduction localization import into cell transport phagocytosis endocytosis establishment of localization vesicle-mediated transport macropinocytosis pinocytosis catabolic process autophagy process utilizing autophagic mechanism	cell periphery cellular anatomical structure plasma membrane membrane protein-containing complex catalytic complex plasma membrane protein complex membrane protein complex gamma-secretase complex membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle endoplasmic reticulum cell periphery cellular anatomical structure plasma membrane membrane protein-containing complex catalytic complex plasma membrane protein complex membrane protein complex gamma-secretase complex membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle endoplasmic reticulum cytoplasm intracellular membrane-bounded organelle endomembrane system

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR041084	Nicastrin, small lobe	Domain
A	IPR008710	Nicastrin	Family

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.