SFTPB - surfactant protein B Gene

Homo sapiens

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

Gene ID: 6439 | Gene type: protein coding

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	Reference	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 Cross Intra	Protein Name	Protein ID	Interactor	Interactor Species	Interactor ID	Detection Method	Reference
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

Bioactive Molecules (1)

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