Annotations: 8OER

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E [auth I], F [auth J]	PF13330	Mucin-2 protein WxxW repeating region (Mucin2_WxxW)	Mucin-2 protein WxxW repeating region	-	Family
C, D	PF25962	Otogelin-like/Mucin TIL domain (TIL_OTOGL_Mucin)	Otogelin-like/Mucin TIL domain	This entry describes a trypsin inhibitor-like (TIL) cysteine rich domain found in Otogelin, Otogelin-like proteins and Mucin proteins from eukaryotes. Otogelin is a structurally complex glycoprotein with specialised roles in the inner ear membranes. ...	This entry describes a trypsin inhibitor-like (TIL) cysteine rich domain found in Otogelin, Otogelin-like proteins and Mucin proteins from eukaryotes. Otogelin is a structurally complex glycoprotein with specialised roles in the inner ear membranes. While it shares some structural similarities with mucins, including von Willebrand factor-like domains and cysteine-rich regions, it differs in its glycosylation patterns and functions. Otogelin undergoes primarily N-glycosylation and plays a critical role in the organisation of the extracellular matrix within the inner ear. In contrast, mucins like MUC5B and MUC19 are heavily O-glycosylated, gel-forming proteins that provide lubrication and protective barriers on mucosal epithelial surfaces [1-5]. The TIL domain is characterised by the presence of five disulfide bonds (two of which are located on either side of the reactive site) in a single small protein domain of 61-62 residues [6].	Domain
C, D	PF08742	C8 domain (C8)	C8 domain	This domain contains 8 conserved cysteine residues, but this family only contains 7 of them to overlaps with other domains. It is found in disease-related proteins including von Willebrand factor, Alpha tectorin, Zonadhesin and Mucin. It is often fo ...	This domain contains 8 conserved cysteine residues, but this family only contains 7 of them to overlaps with other domains. It is found in disease-related proteins including von Willebrand factor, Alpha tectorin, Zonadhesin and Mucin. It is often found on proteins containing Pfam:PF00094 and Pfam:PF01826.	Domain
C, D	PF00094	von Willebrand factor type D domain (VWD)	von Willebrand factor type D domain	Swiss:P17554 contains a vwd domain. Its function is unrelated but the similarity is very strong by several methods. This domain is structurally homologous to the C-terminal domain of repulsive guidance molecules (RGM) despite low sequence identity [2 ...	Swiss:P17554 contains a vwd domain. Its function is unrelated but the similarity is very strong by several methods. This domain is structurally homologous to the C-terminal domain of repulsive guidance molecules (RGM) despite low sequence identity [2].	Domain
A, B	PF08742	C8 domain (C8)	C8 domain	This domain contains 8 conserved cysteine residues, but this family only contains 7 of them to overlaps with other domains. It is found in disease-related proteins including von Willebrand factor, Alpha tectorin, Zonadhesin and Mucin. It is often fo ...	This domain contains 8 conserved cysteine residues, but this family only contains 7 of them to overlaps with other domains. It is found in disease-related proteins including von Willebrand factor, Alpha tectorin, Zonadhesin and Mucin. It is often found on proteins containing Pfam:PF00094 and Pfam:PF01826.	Domain
A, B	PF01826	Trypsin Inhibitor like cysteine rich domain (TIL)	Trypsin Inhibitor like cysteine rich domain	This family contains trypsin inhibitors as well as a domain found in many extracellular proteins. The domain typically contains ten cysteine residues that form five disulphide bonds. The cysteine residues that form the disulphide bonds are 1-7, 2-6, ...	This family contains trypsin inhibitors as well as a domain found in many extracellular proteins. The domain typically contains ten cysteine residues that form five disulphide bonds. The cysteine residues that form the disulphide bonds are 1-7, 2-6, 3-5, 4-10 and 8-9.	Domain
A, B	PF00094	von Willebrand factor type D domain (VWD)	von Willebrand factor type D domain	Swiss:P17554 contains a vwd domain. Its function is unrelated but the similarity is very strong by several methods. This domain is structurally homologous to the C-terminal domain of repulsive guidance molecules (RGM) despite low sequence identity [2 ...	Swiss:P17554 contains a vwd domain. Its function is unrelated but the similarity is very strong by several methods. This domain is structurally homologous to the C-terminal domain of repulsive guidance molecules (RGM) despite low sequence identity [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E [auth I], F [auth J]	Mucin-5B	cation binding ion binding binding metal ion binding small molecule binding	-	membrane-bounded organelle intracellular anatomical structure Golgi apparatus membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen Golgi lumen intracellular organelle cellular anatomical structure organelle lumen organelle cytoplasm extracellular exosome membrane-bounded organelle intracellular anatomical structure Golgi apparatus membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen Golgi lumen intracellular organelle cellular anatomical structure organelle lumen organelle cytoplasm extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane extracellular matrix external encapsulating structure
C, D	Mucin-5B	cation binding ion binding binding metal ion binding small molecule binding	-	membrane-bounded organelle intracellular anatomical structure Golgi apparatus membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen Golgi lumen intracellular organelle cellular anatomical structure organelle lumen organelle cytoplasm extracellular exosome membrane-bounded organelle intracellular anatomical structure Golgi apparatus membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen Golgi lumen intracellular organelle cellular anatomical structure organelle lumen organelle cytoplasm extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane extracellular matrix external encapsulating structure
A, B	Mucin-5B	cation binding ion binding binding metal ion binding small molecule binding	-	membrane-bounded organelle intracellular anatomical structure Golgi apparatus membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen Golgi lumen intracellular organelle cellular anatomical structure organelle lumen organelle cytoplasm extracellular exosome membrane-bounded organelle intracellular anatomical structure Golgi apparatus membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen Golgi lumen intracellular organelle cellular anatomical structure organelle lumen organelle cytoplasm extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane extracellular matrix external encapsulating structure

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E [auth I], F [auth J]	IPR050780	Mucin/von Willebrand/Thrombospondin superfamily	Family
E [auth I], F [auth J]	IPR002919	Trypsin Inhibitor-like, cysteine rich domain	Domain
E [auth I], F [auth J]	IPR001007	VWFC domain	Domain
E [auth I], F [auth J]	IPR001846	von Willebrand factor, type D domain	Domain
E [auth I], F [auth J]	IPR014853	VWF/SSPO/Zonadhesin-like, cysteine-rich domain	Domain
E [auth I], F [auth J]	IPR036084	Serine protease inhibitor-like superfamily	Homologous Superfamily
E [auth I], F [auth J]	IPR025155	WxxW domain	Domain
E [auth I], F [auth J]	IPR006207	Cystine knot, C-terminal	Domain
C, D	IPR050780	Mucin/von Willebrand/Thrombospondin superfamily	Family
C, D	IPR002919	Trypsin Inhibitor-like, cysteine rich domain	Domain
C, D	IPR001007	VWFC domain	Domain
C, D	IPR001846	von Willebrand factor, type D domain	Domain
C, D	IPR014853	VWF/SSPO/Zonadhesin-like, cysteine-rich domain	Domain
C, D	IPR036084	Serine protease inhibitor-like superfamily	Homologous Superfamily
C, D	IPR025155	WxxW domain	Domain
C, D	IPR006207	Cystine knot, C-terminal	Domain
A, B	IPR050780	Mucin/von Willebrand/Thrombospondin superfamily	Family
A, B	IPR002919	Trypsin Inhibitor-like, cysteine rich domain	Domain
A, B	IPR001007	VWFC domain	Domain
A, B	IPR001846	von Willebrand factor, type D domain	Domain
A, B	IPR014853	VWF/SSPO/Zonadhesin-like, cysteine-rich domain	Domain
A, B	IPR036084	Serine protease inhibitor-like superfamily	Homologous Superfamily
A, B	IPR025155	WxxW domain	Domain
A, B	IPR006207	Cystine knot, C-terminal	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
E [auth I], F [auth J]	Pharos: Q9HC84	idiopathic pulmonary fibrosis diffuse panbronchiolitis acute interstitial pneumonia lung cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia asthma Hamman-Rich syndrome interstitial lung disease malignant colon neoplasm ulcerative colitis breast carcinoma idiopathic interstitial pneumonia lung adenocarcinoma malignant pancreatic neoplasm
C, D	Pharos: Q9HC84	idiopathic pulmonary fibrosis diffuse panbronchiolitis acute interstitial pneumonia lung cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia asthma Hamman-Rich syndrome interstitial lung disease malignant colon neoplasm ulcerative colitis breast carcinoma idiopathic interstitial pneumonia lung adenocarcinoma malignant pancreatic neoplasm
A, B	Pharos: Q9HC84	idiopathic pulmonary fibrosis diffuse panbronchiolitis acute interstitial pneumonia lung cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia asthma Hamman-Rich syndrome interstitial lung disease malignant colon neoplasm ulcerative colitis breast carcinoma idiopathic interstitial pneumonia lung adenocarcinoma malignant pancreatic neoplasm