SFTPB - surfactant protein B Gene

Also Known as SP-B; PSP-B; SFTB3; SFTP3; SMDP1

Species: Homo sapiens

Gene Type: protein coding

Gene ID: 6439

About SFTPB

Cytogenetic location: 2p11.2 Genomic coordinates (GRCh38): 2:85,657,307-85,668,741 (from NCBI)

This gene has 7 transcripts (splice variants), 204 orthologues, 2 paralogues and is associated with 3 phenotypes. Restricted expression toward lung (RPKM 1420.4).

Summary

This gene encodes the pulmonary-associated surfactant protein B (SPB), an amphipathic surfactant protein essential for lung function and homeostasis after birth. Pulmonary surfactant is a surface-active lipoprotein complex composed of 90% lipids and 10% proteins which include plasma proteins and apolipoproteins SPA, SPB, SPC and SPD. The surfactant is secreted by the alveolar cells of the lung and maintains the stability of pulmonary tissue by reducing the surface tension of fluids that coat the lung. The SPB enhances the rate of spreading and increases the stability of surfactant monolayers in vitro. Multiple mutations in this gene have been identified, which cause pulmonary surfactant metabolism dysfunction type 1, also called pulmonary alveolar proteinosis due to surfactant protein B deficiency, and are associated with fatal respiratory distress in the neonatal period. Alternatively spliced transcript variants encoding the same protein have been identified.[provided by RefSeq, Feb 2010]

SFTPB Products (3)

mRNA	Protein	Name
NM_000542.5	NP_000533.4	pulmonary surfactant-associated protein B isoform 1 precursor
NM_001367281.1	NP_001354210.1	pulmonary surfactant-associated protein B isoform 2 precursor
NM_198843.3	NP_942140.3	pulmonary surfactant-associated protein B isoform 1 precursor

Gene Ontology

Molecular Function

Molecular Function GO Annotation	Evidence	References	Source
enables protein binding	IPI IPI: Inferred from physical interaction	32296183	GOA

EXP: Inferred from Experiment IDA: Inferred from direct assay IPI: Inferred from physical interaction IMP: Inferred from mutant phenotype IGI: Inferred from genetic interaction IEP: Inferred from expression pattern

SFTPB Protein Structure

SapA

SapB_1

SapB_2

0
100
200
300
393 a.a.

Protein Preferred Names	Protein Names
pulmonary surfactant-associated protein B	18 kDa pulmonary-surfactant protein

SFTPB Protein-protein interaction Information

Type	Protein Name	Protein ID	Interactor	Interactor Species	Interactor ID	Detection Method	References
Intra	SFTPB	P07988	MEOX2	Homo sapiens	Q6FHY5	Y2H Prey Pooling	32296183
Intra	SFTPB	P07988	MEOX2	Homo sapiens	Q6FHY5	Validated Y2H	32296183
Intra	SFTPB	P07988	MEOX2	Homo sapiens	Q6FHY5	Y2H Array	32296183

Cross: Cross-species interaction Intra: Intraspecies interaction

Related Diseases

Diseases	Alias
Surfactant Metabolism Dysfunction, Pulmonary, 1	Neonatal Acute Respiratory Distress Due To Sp-B Deficiency SMDP1 Interstitial Lung Disease Due To Surfactant Protein B Deficiency Pulmonary Alveolar Proteinosis, Congenital, 1 Interstitial Lung Disease, Nonspecific, Due To Surfactant Protein B Deficiency Neonatal Acute Respiratory Distress Due To Surfactant Protein B Deficiency Pulmonary Surfactant Metabolism Dysfunction 1 Congenital Pulmonary Alveolar Proteinosis 1 Interstitial Lung Disease Non-Specific Due To Surfactant Protein B Deficiency Pap Surfactant Metabolism Dysfunction, Pulmonary, Type 1
Respiratory Distress Syndrome In Premature Infants	Hyaline Membrane Disease Infant Respiratory Distress Syndrome Rds Of Prematurity Hyaline Membrane Disease, Formerly Infant Acute Respiratory Distress Syndrome Infant Ards Neonatal Respiratory Distress Syndrome Respiratory Distress Syndrome, Infant RDS Rds In Prematurity Respiratory Distress Syndrome, Newborn Rds - Infants
Lung Disease	Lung Diseases Disorder Of Lung Abnormality Of The Lung
Pulmonary Alveolar Proteinosis
Bronchopulmonary Dysplasia	Bpd
Respiratory Failure	Acute Respiratory Failure Chronic Respiratory Failure Respiratory Insufficiency Acute-On-Chronic Respiratory Failure Respiratory Disease Acute And Chronic Respiratory Failure Respiratory Insufficiency/Failure Chronic Respiratory Disease Pulmonary Valve Insufficiency Chronic Disease Of Respiratory System Respiration Disorders Respiratory Tract Diseases Lung Failure Nos Pulmonary Failure Arf - [Acute Respiratory Failure] Acute Respiratory Insufficiency Acute Pulmonary Insufficiency Acute Respiration Failure Chronic Respiration Failure
Adult Respiratory Distress Syndrome	Acute Respiratory Distress Syndrome Ards Non-Cardiogenic Pulmonary Edema Acute Lung Injury Respiratory Distress Syndrome, Adult Shock Lung Acute Respiratory Distress Respiratory Distress Syndrome Adult Rds Ali Increased-Permeability Pulmonary Edema Stiff Lung Respiratory Distress Syndrome Adult
Pulmonary Sclerosing Hemangioma	Pneumocytoma
Interstitial Lung Disease	Ild Lung Diseases, Interstitial Lung Diseases Interstitial Interstitial Lung Diseases
Sclerosing Hemangioma	Sclerosing Haemangioma Cutaneous Fibrous Histiocytoma
Pulmonary Interstitial Emphysema
Newborn Respiratory Distress Syndrome	Hyaline Membrane Disease Respiratory Distress Syndrome Of Newborn Neonatal Respiratory Distress Hmd - Hyaline Membrane Disease Neonatal Respiratory Distress Syndrome Pulmonary Hyaline Membrane Disease Pulmonary Hypoperfusion Syndrome Of Newborn Respiratory Distress Syndrome, Newborn Respiratory Distress Syndrome Cardiorespiratory Distress Syndrome Of Newborn Distress Respiratory Syndrome Newborn Idiopathic Respiratory Distress Syndrome Idiopathic Respiratory Distress Syndrome Of Newborn Newborn Idiopathic Respiratory Distress Syndrome Respiratory Distress Syndrome In Newborn Rds - [Respiratory Distress Syndrome] Of Newborn Newborn Cardiorespiratory Distress Syndrome
Meconium Aspiration Syndrome	Neonatal Aspiration Of Meconium Meconium Aspiration Mas Meconium Aspiration Syndrome Of Newborn Meconium Inhalation Mas - [Meconium Aspiration Syndrome] Meconium Aspiration Nos Meconium Aspiration Syndrome Nos Meconium Pneumonitis Meconium Stained Liqueur Aspiration
Neonatal Respiratory Failure	Respiratory Failure Of Newborn Inadequate Pulmonary Ventilation Of Newborn Newborn Lung Insufficiency Newborn Pulmonary Function Inadequate Newborn Pulmonary Insufficiency Newborn Respiration Failure Newborn Respiratory Insufficiency Respiratory Insufficiency Syndrome Of Newborn
Pneumonia	Acute Pneumonia Pneumonias Infectious Pneumonia Pn - [Pneumonia] Lobar Pneumonia Nos Multifocal Pneumonia Orthostatic Pneumonia Pneumonia Nos Chronic Pneumonia Nos Atypical Pneumonia Passive Pneumonia Purulent Pneumonia Interstitial Lobar Pneumonia Pneumonia, Unspecified Pneumonia Due To Chlamydia Pneumonia Due To Chlamydia Pneumoniae Pneumonia Due To E. Coli Escherichia Coli Lobar Pneumonia Pneumonia Due To H. Influenzae Pneumonia Due To Hemophilus Influenzae Bronchopneumonia Due To H. Influenzae Haemophilus Influenzae Lobar Pneumonia Bronchopneumonia Due To Hemophilus Influenzae Pseudomonal Pneumonia Pseudomonas Pneumonia Pseudomonas Lobar Pneumonia Staphylococcal Pneumonia Staphylococcus Pneumonia Acute Staphylococcal Pneumonia Staphylococcal Double Pneumonia Staphylococcal Lobar Pneumonia Staphylococcal Purulent Pneumonia Staphylococcal Bronchopneumonia Pneumococcal Pneumonia Pneumococcus Pneumonia Bronchopneumonia Due To S. Pneumoniae Pneumococcal Lobar Pneumonia Streptococcal Pneumoniae Pneumonia Streptococcus Pneumoniae Lobar Pneumonia Pyemic Pneumococcal Embolism With Pneumonia Bronchopneumonia Due To Streptococcus Pneumoniae Pneumonia Due To Streptococcus, Group B Group B Streptococcal Pneumonia Adenovirus Pneumonia Adenoviral Pneumonia Adenovirus Viral Pneumonia Pneumonia Respiratory Syncytial Viral Parainfluenza Viral Pneumonia Parainfluenzal Pneumonia Parainfluenza Virus Pneumonia Human Metapneumovirus Pneumonia Human Metapneumovirus Infection Resulting In Pneumonia Pneumocystis Pneumonia Plasma Cells Pneumonia
Pulmonary Immaturity	Primary Atelectasis Of Newborn Primary Atelectasis, In Perinatal Period Primary Failure To Expand Terminal Respiratory Units Immature Lungs Primary Atelectasis Pulmonary Immaturity Nos Lung Lobe Hypoplasia, Associated With Short Gestation Lung Nonexpansion Premature Lungs Pulmonary Hypoplasia Associated With Short Gestation Failure Of Expansion Of Terminal Respiratory Units Primary Atelectasis Of Fetus Or Newborn Primary Atelectasis In Perinatal Period
Lipid Pneumonia	Exogenous Lipoid Pneumonia Lipoid Pneumonitis Pneumonia, Lipid Pneumonia Lipid Lipoid Pneumonia
Hemangioma	Hemangiomas
Large Cell Carcinoma	Carcinoma, Large Cell Carcinoma Large Cell
Toxic Pneumonitis	Acute Chemical Fume Pulmonary Edema Acute Chemical Pulmonary Edema Acute Pulmonary Edema Due To Fumes And/Or Vapors
Interstitial Pneumonitis, Desquamative, Familial	Desquamative Interstitial Pneumonia DIP Pneumonitis, Desquamative Interstitial, Familial Pneumonia, Desquamative Interstitial, Familial Interstitial Lung Disease, Desquamative Ild, Desquamative Familial Desquamative Interstitial Pneumonitis Rbild Respiratory Bronchiolitis-Associated Interstitial Lung Disease Respiratory Bronchiolitis Associated Interstitial Lung Disease
Pulmonary Hemosiderosis	Idiopathic Pulmonary Hemosiderosis Alveolar Hypoventilation Syndrome Brown Induration Brown Lung Siderosis Hemosiderosis, Pulmonary, With Deficiency Of Gamma-A Globulin Byssinosis
Diaphragm Disease	Abnormality Of The Diaphragm Disease Of Diaphragm Diaphragmatic Disorder Disorder Of Diaphragm
Pulmonary Alveolar Microlithiasis	PULAM Pam
Respiratory Syncytial Virus Infectious Disease	Respiratory Syncytial Virus Infections Respiratory Syncytial Virus Infection
Pulmonary Disease, Chronic Obstructive	Chronic Obstructive Pulmonary Disease COPD Pulmonary Disease, Chronic Obstructive, Severe Early-Onset Chronic Obstructive Lung Disease Chronic Obstructive Airway Disease Pulmonary Disease, Chronic Obstructive, Susceptibility To Cold Severe Early-Onset Chronic Obstructive Pulmonary Disease Pulmonary Disease Chronic Obstructive Pulmonary Disease, Obstructive, Chronic, Susceptibility To Chronic Obstructive Pulmonary Disease Of Horses Common Cold Upper Respiratory Infections Copd - [Chronic Obstructive Pulmonary Disease] Coad - [Chronic Obstructive Airways Disease] Cold - [Chronic Obstructive Lung Disease] Chronic Airway Disease Nos Chronic Airways Limitation, Unspecified Chronic Obstructed Airway, Unspecified Chronic Obstructive Airway Disease, Unspecified Chronic Obstructive Airway, Unspecified Obstructive Lung Disease Nos Chronic Obstructive Lung Disease Nos Chronic Obstructive Lung Nos Obstructive Pulmonary Disease Nos Exacerbation Copd Nos Acute Exacerbation Copd
Cystic Fibrosis	Mucoviscidosis CF Pseudomonas Aeruginosa, Susceptibility To Chronic Infection By, In Cystic Fibrosis Pseudomonas Aeruginosa Chronic Infection By, In Cystic Fibrosis Cystic Fibrosis Lung Disease, Modifier Of Cystic Fibrosis Of Pancreas Fibrocystic Disease Of Pancreas Cf - [Cystic Fibrosis] Cystic Fibrosis Nos Fibrocystic Disease Fibrocystic Disease Of The Pancreas Mucoviscidosis Of Pancreas Nonproliferative Fibrocystic Disease Pancreatic Cystic Fibrosis
Aspiration Pneumonitis	Chemical Pneumonitis Mendelson'S Syndrome Aspiration Pneumonia Pneumonitis Due To Fumes And/Or Vapors Toxic Pneumonitis Mendelson'S Syndrome Resulting From A Procedure Mendelson Syndrome Resulting From A Procedure Pulmonary Acid Aspiration Syndrome Pneumonitis Due To Inhalation Of Gastric Secretions Mendelson Syndrome Due To Anaesthesia During Labour And Delivery Inhalation Of Stomach Contents Or Secretions, Nos Due To Anaesthesia During Labour And Delivery
Pulmonary Hypertension	Primary Pulmonary Hypertension Hypertension Pulmonary Hypertension, Pulmonary Hypertension, Pulmonary, Primary Idiopathic Pulmonary Hypertension Idiopathic Pulmonary Arterial Hypertension Pulmonary Htn - [Hypertension]
Lung Cancer Susceptibility 3	Lung Adenocarcinoma Adenocarcinoma Of Lung LNCR3 Adenocarcinoma Of Lung, Susceptibility To Bronchogenic Lung Adenocarcinoma Nonsmall Cell Adenocarcinoma Adenocarcinoma Lung Lung Adenocarcinomas Non-Small Cell Adenocarcinoma
Interstitial Lung Disease 2	Idiopathic Pulmonary Fibrosis Ipf Fibrocystic Pulmonary Dysplasia Pulmonary Fibrosis, Idiopathic Pulmonary Fibrosis, Idiopathic, Susceptibility To Cryptogenic Fibrosing Alveolitis ILD2 Idiopathic Pulmonary Fibrosis, Familial Fibrosing Alveolitis, Cryptogenic Uip Fibrosing Alveolitis Interstitial Pneumonitis, Usual Familial Idiopathic Pulmonary Fibrosis Idiopathic Fibrosing Alveolitis, Chronic Form Usual Interstitial Pneumonia Fibrosing Alveolitis Cryptogenic Hamman-Rich Disease Idiopathic Pulmonary Fibrosis Familial Interstitial Pneumonitis Usual Fibrosis Idiopathic Pulmonary Fibrosis, Pulmonary, Idiopathic Hamman-Rich Syndrome Chronic Idiopathic Pulmonary Fibrosis Acute Interstitial Pneumonia Interstitial Pulmonary Fibrosis Ipf - [Idiopathic Pulmonary Fibrosis] Idiopathic Lung Fibrosis Fibrosing Lung Disease Pulmonary Fibrosis Nos Fibrosing Pneumonitis
Diaphragmatic Hernia, Congenital	Congenital Diaphragmatic Hernia Diaphragmatic Hernia Cdh Congenital Diaphragmatic Defect Hernia, Diaphragmatic Dih Hernia, Congenital Diaphragmatic Hcd Diaphragmatic Defect, Congenital Diaphragm, Unilateral Agenesis Of Hemidiaphragm, Agenesis Of Diaphragmatic Hernia 1 Agenesis Of Hemidiaphragm Unilateral Agenesis Of Diaphragm Hernia Diaphragmatic Hernia Diaphragmatic Congenital Hernia, Diaphragmatic, Type 1 Hiatus Hernia Oesophageal Hiatus Hernia Paraoesophageal Hernia Sliding Hiatus Hernia Congenital Diaphragm Hernia Congenital Diaphragm Defect With Hernia Gross Congenital Diaphragm Defect
Idiopathic Interstitial Pneumonia	Hamman-Rich Syndrome Diffuse Idiopathic Pulmonary Fibrosis Idiopathic Fibrosing Alveolitis Ipf Idiopathic Interstitial Pneumonias Idiopathic Interstitial Pneumonia, Not Otherwise Specified Pulmonary Fibrosis
Pituitary Adenoma 2, Growth Hormone-Secreting	PITA2 Acromegaly Due To Pituitary Adenoma 2 Acromegaly, X-Linked Growth Hormone Secreting Pituitary Adenoma 2 Pituitary Adenoma, Growth Hormone-Secreting, 2 Pituitary Adenoma 2, Gh-Secreting Gh-Secreting Pituitary Adenoma 2 X-Linked Acromegaly Adenoma, Pituitary, Growth Hormone-Secreting, Type 2
Asthma	Chronic Obstructive Asthma Asthma, Diminished Response To Antileukotriene Treatment In Bronchial Hyperreactivity Asthma, Susceptibility To Asthma, Bronchial Asthma, Protection Against Asthma, Nocturnal, Susceptibility To Nocturnal Asthma Asthma-Related Traits Asthma-Related Traits, Susceptibility To Asthma, Nocturnal Chronic Obstructive Asthma With Acute Exacerbation Chronic Obstructive Asthma With Status Asthmaticus Exercise Induced Asthma Exercise-Induced Asthma Bronchial Asthma Asthma, Exercise-Induced Idiosyncratic Asthma Unspecified Asthma With Acute Exacerbation Asthma, Unspecified, With Stated Status Asthmaticus Status Asthmaticus Nos Acute Severe Asthma Acute Severe Bronchial Asthma Status Asthma Status Post Asthmaticus
Mesothelioma, Malignant	Malignant Mesothelioma Pleural Mesothelioma MESOM Mesothelioma, Somatic Advanced Malignant Mesothelioma Asbestos-Related Malignant Mesothelioma Diffuse Malignant Mesothelioma Malignant Tumor Of Mesothelium Malignant Mesothelioma, Susceptibility To Mesothelioma Diffuse Malignant Mesothelioma Malignant Pleural Mesothelioma
Lung Cancer	Lung Carcinoma Non-Small Cell Lung Carcinoma Lung Cancer, Susceptibility To Lung Cancer, Protection Against Adenocarcinoma Of Lung, Somatic Adenocarcinoma Of Lung, Response To Tyrosine Kinase Inhibitor In Nonsmall Cell Lung Cancer Lung Neoplasm Carcinoma Of Lung Lung Non-Small Cell Carcinoma Non-Small Cell Lung Cancer Nsclc Lung Neoplasms Malignant Neoplasm Of Lung Alveolar Cell Carcinoma Nonsmall Cell Lung Cancer, Somatic Nonsmall Cell Lung Cancer, Response To Tyrosine Kinase Inhibitor In Nonsmall Cell Lung Cancer, Susceptibility To Lung Cancer, Somatic Lung Cancer, Resistance To Cancer Of Lung Cancer Of Bronchus Cancer Of The Lung Lung Malignancies Lung Malignant Tumors Malignant Lung Tumor Malignant Tumor Of Lung Pulmonary Cancer Pulmonary Carcinoma Pulmonary Neoplasms Respiratory Carcinoma LNCR Adenocarcinoma Of Lung Neoplasm Of Lung Cancer Lung Carcinoma Non-Small Cell Lung Carcinoma, Non-Small-Cell Lung Lung Cancers Lung Carcinomas Cancer, Lung Cancer, Lung, Non-Small Cell Primary Malignant Neoplasm Of Lung Bronchioloalveolar Adenocarcinoma
Patent Ductus Arteriosus 1	Patent Ductus Arteriosus PDA1 Pda Ductus Arteriosus, Patent Patent Ductus Arteriosus, Susceptibility To Patent Ductus Botalli Patency Of The Ductus Arteriosus Patent Ductus Arteriosus Familial Ductus Arteriosus Patent Patent Ductus Arteriosus - Persisting Type
Hermansky-Pudlak Syndrome	Hps Albinism With Hemorrhagic Diathesis And Pigmented Reticuloendothelial Cells Hermanski-Pudlak Syndrome Hermansky Pudlak Syndrome Platelet Storage Pool Deficiency
Primary Ciliary Dyskinesia	Immotile Cilia Syndrome Kartagener Syndrome Dextrocardia Bronchiectasis And Sinusitis Pcd Ciliary Motility Disorders Ciliary Motility Disorder Immotile Ciliary Syndrome Ciliary Dyskinesia Primary Ics Polynesian Bronchiectasis Dextrocardia-Bronchiectasis-Sinusitis Syndrome Immotile Cilia Syndrome, Kartagener Type Primary Ciliary Dyskinesia And Situs Inversus Primary Ciliary Dyskinesia, Kartagener Type Siewert Syndrome Dyskinesia, Ciliary, Primary

Diseases	Alias
Waldenstroem'S Macroglobulinemia	Waldenstroem'S Macroglobulinemia Waldenstroem'S Macroglobulinemia Macroglobulinemia Of Waldenstrom Lymphoplasmacytic Lymphoma With Igm Gammopathy Lymphoplasmacytic Lymphoma Waldenstroem'S Macroglobulinemia Waldenstroem'S Macroglobulinemia Macroglobulinemia Of Waldenstrom Lymphoplasmacytic Lymphoma With Igm Gammopathy Lymphoplasmacytic Lymphoma

Related Agents

Pre-clinical Phase

Pre-clinical Phase

Bioactive Molecules (2)

Cat. No.	Product Name	Effect	Purity	Rare Diseases
HY-RS12782	SFTPB Human Pre-designed siRNA Set A	Pre-designed Set	/	Unkown
HY-RS22802	Sftpb Mouse Pre-designed siRNA Set A	Pre-designed Set	/	Unkown

Orthologs Information

Species	Symbol	Source	ID
Bos taurus	SFTPB	VGNC	VGNC:34528
Felis catus	SFTPB	VGNC	VGNC:65066
Canis familiaris	SFTPB	VGNC	VGNC:58285
Rattus norvegicus	SFTPB	RGD	RGD:621700
Macaca mulatta	SFTPB	VGNC	VGNC:77189
Mus musculus	SFTPB	MGD	MGI:109516
Others	SFTPB	NCBI