Annotations: 8UWC

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF23001	Membrane-bound Site-1 Protease Family N-terminal domain (MBTP1_N)	Membrane-bound Site-1 Protease Family N-terminal domain	The protein family consists of serine proteases involved in regulated intramembrane proteolysis (RIP) of various substrates, playing a crucial role in cellular signaling and regulation. These proteases cleave after hydrophobic or small residues, with ...	The protein family consists of serine proteases involved in regulated intramembrane proteolysis (RIP) of various substrates, playing a crucial role in cellular signaling and regulation. These proteases cleave after hydrophobic or small residues, with a preference for Arg or Lys at the P4 position. They are responsible for the proteolytic activation of sterol regulatory element-binding proteins (SREBPs), cyclic AMP-dependent transcription factors (ATF6 and ATF6B), and other factors like BDNF, GNPTAB, and FAM20C. This activation process is essential for lipid homeostasis, lysosome biogenesis, osteoblast differentiation, and ER stress response. Additionally, they regulate M6P-dependent trafficking of lysosomal enzymes and are involved in collagen trafficking through the activation of CREB3L2/BBF2H7. In plants, they participate in stress response signaling and cell wall remodeling by processing factors like BZIP17 and pectinesterases. Overall, the family plays a key role in various cellular processes, including lipid metabolism, stress response, and developmental pathways.	Domain
A	PF00082	Subtilase family (Peptidase_S8)	Subtilase family	Subtilases are a family of serine proteases. They appear to have independently and convergently evolved an Asp/Ser/His catalytic triad, like that found in the trypsin serine proteases (see Pfam:PF00089). Structure is an alpha/beta fold containing a 7 ...	Subtilases are a family of serine proteases. They appear to have independently and convergently evolved an Asp/Ser/His catalytic triad, like that found in the trypsin serine proteases (see Pfam:PF00089). Structure is an alpha/beta fold containing a 7-stranded parallel beta sheet, order 2314567.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Membrane-bound transcription factor site-1 protease	peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity	primary metabolic process gene expression macromolecule biosynthetic process protein maturation biosynthetic process proteolysis protein processing metabolic process cellular process protein metabolic process macromolecule metabolic process protein localization establishment of protein localization cellular localization primary metabolic process gene expression macromolecule biosynthetic process protein maturation biosynthetic process proteolysis protein processing metabolic process cellular process protein metabolic process macromolecule metabolic process protein localization establishment of protein localization cellular localization nitrogen compound transport nucleocytoplasmic transport transport nuclear transport intracellular transport protein localization to nucleus establishment of localization localization import into nucleus establishment of protein localization to organelle protein transport cellular macromolecule localization macromolecule localization protein localization to organelle establishment of localization in cell protein import into nucleus intracellular protein transport secondary alcohol metabolic process sterol metabolic process steroid metabolic process cholesterol metabolic process alcohol metabolic process small molecule metabolic process lipid metabolic process cellular component organization lysosome organization organelle organization vacuole organization lytic vacuole organization cellular component organization or biogenesis regulation of localization regulation of biological process regulation of cellular process regulation of transport biological regulation regulation of vesicle-mediated transport vesicle-mediated transport membrane protein intracellular domain proteolysis membrane protein proteolysis cellular response to stimulus regulation of cell cycle phase transition DNA damage checkpoint signaling response to stimulus signaling G2/M transition of mitotic cell cycle mitotic G2 DNA damage checkpoint signaling negative regulation of biological process negative regulation of cell cycle cell cycle phase transition intracellular signal transduction mitotic cell cycle negative regulation of mitotic cell cycle mitotic G2/M transition checkpoint cell communication regulation of mitotic cell cycle mitotic DNA integrity checkpoint signaling cellular response to stress response to stress mitotic DNA damage checkpoint signaling negative regulation of cellular process negative regulation of cell cycle phase transition signal transduction cell cycle regulation of cell cycle cell cycle process cell cycle G2/M phase transition negative regulation of mitotic cell cycle phase transition regulation of G2/M transition of mitotic cell cycle regulation of cell cycle process DNA integrity checkpoint signaling regulation of cell cycle G2/M phase transition negative regulation of cell cycle process cell cycle checkpoint signaling regulation of mitotic cell cycle phase transition mitotic cell cycle checkpoint signaling mitotic cell cycle process DNA damage response negative regulation of cell cycle G2/M phase transition signal transduction in response to DNA damage negative regulation of G2/M transition of mitotic cell cycle mitotic cell cycle phase transition ATF6-mediated unfolded protein response cellular response to topologically incorrect protein endoplasmic reticulum unfolded protein response cellular response to unfolded protein response to unfolded protein response to topologically incorrect protein ER-nucleus signaling pathway response to endoplasmic reticulum stress regulation of cholesterol biosynthetic process regulation of steroid biosynthetic process regulation of cholesterol metabolic process regulation of lipid metabolic process lipid biosynthetic process regulation of primary metabolic process regulation of small molecule metabolic process steroid biosynthetic process regulation of biosynthetic process secondary alcohol biosynthetic process regulation of alcohol biosynthetic process small molecule biosynthetic process regulation of steroid metabolic process cholesterol biosynthetic process sterol biosynthetic process regulation of sterol biosynthetic process alcohol biosynthetic process regulation of lipid biosynthetic process regulation of metabolic process	membrane-bounded organelle intracellular anatomical structure Golgi apparatus subcompartment Golgi apparatus organelle subcompartment intracellular membrane-bounded organelle endomembrane system intracellular organelle cellular anatomical structure organelle Golgi stack cytoplasm membrane endoplasmic reticulum subcompartment membrane-bounded organelle intracellular anatomical structure Golgi apparatus subcompartment Golgi apparatus organelle subcompartment intracellular membrane-bounded organelle endomembrane system intracellular organelle cellular anatomical structure organelle Golgi stack cytoplasm membrane endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum organelle membrane endoplasmic reticulum membrane membrane-enclosed lumen intracellular organelle lumen endoplasmic reticulum lumen organelle lumen Golgi membrane bounding membrane of organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR050131	Subtilisin-like serine protease	Family
A	IPR057060	MBTPS1, third domain	Domain
A	IPR023828	Peptidase S8, subtilisin, Ser-active site	Active Site
A	IPR022398	Peptidase S8, subtilisin, His-active site	Active Site
A	IPR055143	Membrane-bound transcription factor site-1 protease-like, N-terminal domain	Domain
A	IPR000209	Peptidase S8/S53 domain	Domain
A	IPR034185	Site-1 peptidase catalytic domain	Domain
A	IPR015500	Peptidase S8, subtilisin-related	Family
A	IPR036852	Peptidase S8/S53 domain superfamily	Homologous Superfamily
A	IPR057032	MBTPS1, fourth domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q14703	Craniofacial Abnormalities prostate cancer medulloblastoma hepatocellular carcinoma osteosarcoma ovarian cancer psoriasis

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.