CSTB - cystatin B Gene

Homo sapiens

Also known as PME; ULD; CST6; EPM1; STFB; CPI-B; EPM1A

Gene ID: 1476 | Gene type: protein coding

About CSTB

Cytogenetic location: 21q22.3 Genomic coordinates (GRCh38): 21:43,773,950-43,776,308 (from NCBI)

This gene has 5 transcripts (splice variants), 257 orthologues, 1 paralogue and is associated with 4 phenotypes. Biased expression in esophagus (RPKM 2096.4) and urinary bladder (RPKM 80.5).

Summary

The cystatin superfamily encompasses proteins that contain multiple cystatin-like sequences. Some of the members are active cysteine Protease Inhibitors, while Others have lost or perhaps never acquired this inhibitory activity. There are three inhibitory families in the superfamily, including the type 1 cystatins (stefins), type 2 cystatins and kininogens. This gene encodes a stefin that functions as an intracellular thiol Protease inhibitor. The protein is able to form a dimer stabilized by noncovalent forces, inhibiting papain and cathepsins l, h and b. The protein is thought to play a role in protecting against the proteases leaking from lysosomes. Evidence indicates that mutations in this gene are responsible for the primary defects in patients with progressive myoclonic epilepsy (EPM1). One type of mutation responsible for EPM1 is the expansion in the promoter region of this gene of a CCCCGCCCCGCG repeat from 2-3 copies to 30-78 copies. [provided by RefSeq, Jul 2016]

CSTB Products(1)

mRNA	Protein	Name
NM_000100.4	NP_000091.1	cystatin-B

Gene Ontology

Molecular Function
Biological Process
Cellular Component

Molecular Function GO Annotation	Evidence	Reference	Source
enables cysteine-type endopeptidase inhibitor activity	IDA IDA: Inferred from direct assay	3488317	GOA
enables endopeptidase inhibitor activity	IDA IDA: Inferred from direct assay	3053245	GOA
enables protease binding	IDA IDA: Inferred from direct assay	11514663	GOA
enables protease binding	IPI IPI: Inferred from physical interaction	6203523	GOA

Biological Process GO Annotation	Evidence	Reference	Source
involved in negative regulation of peptidase activity	IDA IDA: Inferred from direct assay	6203523	GOA
involved in negative regulation of proteolysis	IDA IDA: Inferred from direct assay	3488317	GOA

Cellular Component GO Annotation	Evidence	Reference	Source
located in cytoplasm	IDA IDA: Inferred from direct assay	11139332	GOA
located in extracellular space	IDA IDA: Inferred from direct assay	3488317	GOA
located in nucleus	IDA IDA: Inferred from direct assay	11139332	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

CSTB Protein Structure

Cystatin

0
98 a.a.

Protein Preferred Names

Protein Names

cystatin-B

cystatin B (stefin B)

Recombinant CSTB Proteins

Cat. No.	Product Name	Accession	Purity
HY-P72965	Cystatin B/CSTB Protein, Human (His)	Q76LA1 (M2-F98)	≥95%

Related Diseases

Diseases

Alias

Myoclonic Epilepsy Of Unverricht And Lundborg

Progressive Myoclonic Epilepsy	Uld
EPM1	Pme
Epm1a	Baltic Myoclonic Epilepsy
Progressive Myoclonic Epilepsy Type 1	Unverricht-Lundborg Disease
Familial Progressive Myoclonic Epilepsy	Epilepsy, Progressive Myoclonic 1
Epilepsy, Progressive Myoclonic, 1a	Epilepsy, Progressive Myoclonic, 1
Myoclonic Epilepsy, Progressive	Epilepsy, Progressive Myoclonic 1a
Progressive Myoclonus Epilepsy Type 1	Progressive Myoclonus Epilepsy
Epilepsy Progressive Myoclonic	Progressive Myoclonic Epilepsy 1
Progressive Myoclonic Epilepsy 1a	Progressive Myoclonic Epilepsy Unverricht-Lundborg Type
Epilepsy, Myoclonic, Progressive	Epilepsy, Myoclonic, Progressive, Type 1a
Unverricht-Lundborg Syndrome	Myoclonic Epilepsies, Progressive

Unverricht-Lundborg Syndrome

Unverricht-Lundborg Disease	Epm1
Myoclonic Epilepsy Of Unverricht And Lundborg	Myoclonus Progressive Epilepsy Of Unverricht And Lundborg
Unverricht - Lundborg Disease	Unverricht'S Disease
Epilepsy, Progressive Myoclonic Type 1	Epilepsy, Progressive Myoclonus 1
Progressive Myoclonus Epilepsy Baltic Myoclonic Epilepsy	Baltic Myoclonic Epilepsy
Baltic Myoclonus	Baltic Myoclonus Epilepsy
Lundborg-Unverricht Syndrome	Mediterranean Myoclonic Epilepsy
Pme	Progressive Myoclonic Epilepsy
Progressive Myoclonus Epilepsy 1	Uld
Myoclonic Epilepsies, Progressive

Encephalopathy

Brain Diseases	Encephalopathies
Toxic Encephalopathy	Toxic Brain Fever
Toxic Brain Inflammation	Toxic Brain Stem Inflammation
Toxic Cerebral Fever	Toxic Cerebrospinal Fever
Toxic Cerebrospinal Inflammation	Encephalopathy Nec
Encephalopathy Nos	Encephalopathy Disease
Encephalopathy Syndrome

Hypohidrotic Ectodermal Dysplasia Autosomal Recessive

Anhidrotic Ectodermal Dysplasia, Autosomal Recessive	Autosomal Recessive Hypohidrotic Ectodermal Dysplasia
Ar-Hed	Autosomal Recessive Anhidrotic Ectodermal Dysplasia
Autosomal Recessive Hypohidrotic Ectodermal Dysplasia Syndrome	Ectodermal Dysplasia, Hypohidrotic, Autosomal Recessive

Choreatic Disease

Chorea

Hereditary Chorea

Progressive Myoclonus Epilepsy

Pme	Progressive Myoclonic Epilepsy
Myoclonic Epilepsies, Progressive	Unverricht-Lundborg Syndrome

Myoclonus Epilepsy

Epilepsies, Myoclonic

Dystonia

Dystonic Disease	Dystonic Disorder
Dystonia Disorders	Neuroleptic Dyskinesia

Benign Epilepsy With Centrotemporal Spikes

Rolandic Epilepsy	Benign Rolandic Epilepsy
Epilepsy, Rolandic	Bcects
Benign Childhood Epilepsy With Centrotemporal Spike	Sylvan Seizures
Becrs	Bects
Bre	Benign Epilepsy Of Childhood With Centrotemporal Spikes
Benign Familial Epilepsy Of Childhood With Rolandic Spikes	Centrotemporal Epilepsy

Microcephaly

Microencephaly	Microcephalus
Microcephalic	Nanocephaly
Congenital Microcephaly	Brain Hypoplasia
Brain Nondevelopment	Cephalic Hypoplasia
Undeveloped Cerebrum	Undeveloped Brain
Micrencephalon	Micrencephaly

Epilepsy

Epilepsy Syndrome	Epileptic Syndrome
Epilepsies	Symptomatic Epilepsies
Post Traumatic Epilepsy	Traumatic Epilepsy
Traumatic Epileptic	Epilepsy Due To Hippocampal Sclerosis
Epilepsy With Ammon'S Horn Sclerosis	Epilepsy Due To Cortical Dysplasia
Epilepsy Due To Neuronal Migration Disorders

Early Myoclonic Encephalopathy

Myoclonic Epilepsy	Myoclonic Seizure
Epilepsies, Myoclonic	Epileptic Seizures - Myoclonic
Epileptic Seizures, Myoclonic	Myoclonia Epileptica
Myoclonic Seizure Disorder	Early Myoclonic Encephalopathy With Suppression-Bursts

Progressive Myoclonus Epilepsy 1a

Epm1a

Myoclonic Epilepsy Of Lafora

Lafora Disease	Epilepsy, Progressive Myoclonic 2b
EPM2	Melf
Epilepsy, Progressive Myoclonic 2a	Epm2a
Lafora'S Disease	Lafora Body Disease
Lbd	Epilepsy, Progressive Myoclonic, 2a
Lafora Progressive Myoclonic Epilepsy	Epilepsy Progressive Myoclonic 2
Lafora Body Disorder	Pme Type 2
Progressive Myoclonic Epilepsy Type 2	Progressive Myoclonus Epilepsy Type 2
Epilepsy, Progressive Myoclonic 2	Epm2b
Ld	Progressive Myoclonic Epilepsy 2
Progressive Myoclonic Epilepsy 2a	Progressive Myoclonic Epilepsy 2b
Progressive Myoclonic Epilepsy Lafora Type	Epilepsy, Myoclonic, Of Lafora

Myoclonus

Progressive Myoclonus Epilepsy 4

Action Myoclonus-Renal Failure Syndrome	Amrf
Epm4	Myoclonus-Nephropathy Syndrome

Epilepsy With Generalized Tonic-Clonic Seizures

Tonic-Clonic Epilepsy	Epileptic Seizures, Tonic-Clonic
Grand Mal Epilepsy	Epilepsy, Tonic-Clonic

Dementia

Dementias	Presenile Dementia
Alzheimer Type Dementia	Alzheimer Sclerosis
Alzheimer Disease Dementia	Alzheimer Dementia
Primary Degenerative Alzheimer Type Dementia	End Stage Alzheimer'S Dementia
Alzheimer'S Type Atypical Dementia	Alzheimer Type Presenile Dementia
Early Onset Alzheimer Dementia	Dementia In Alzheimer Disease Type 2
Dementia In Alzheimer Disease With Early Onset	Early Onset Alzheimer Type Dementia, Uncomplicated
Primary Degenerative Alzheimer Type Dementia, Early Onset	Primary Degenerative Alzheimer Type Dementia, Presenile Onset, Uncomplicated
Alzheimer Disease Dementia With Early Onset	Presenile Sclerosis
Presenile Brain Sclerosis	Presenile Alzheimer Brain Sclerosis
Late Onset Alzheimer Dementia	Dementia In Alzheimer Disease Type 1
Dementia In Alzheimer Disease With Late Onset	Primary Degenerative Alzheimer Type Dementia, Late Onset
Sdat - [Senile Dementia, Alzheimer Type]	Alzheimer Disease Dementia With Late Onset
Late Onset Alzheimer Brain Sclerosis	Senile Alzheimer Brain Disease
Senile Alzheimer Brain Sclerosis	Senile Primary Degenerative Alzheimer Type Dementia
Senile Dementia Of The Alzheimer Type	Arteriosclerotic Dementia
Strategic-Infarct Dementia	Post Stroke Dementia
Vascular Cognitive Impairment	Vascular Dementia
Dementia Of The Lewy Body Type	Dementia With Lewy Bodies
Sdlt - [Senile Dementia Of The Lewy Body Type]	Senile Dementia Of The Lewy Body Type
Alcohol-Related Dementia	Alcoholic Dementia Nos
Alcohol-Induced Dementia	Alcoholic Brain Syndrome
Chronic Alcoholic Brain Syndrome	Alcohol Dementia
Late Onset Alcoholic Psychosis	Residual And Late-Onset Alcohol-Induced Psychotic Disorder
Mental And Behavioural Disorders Due To Use Of Sedatives Or Hypnotics, Residual And Late-Onset Psychotic Disorder	Late-Onset Psychoactive Substance-Induced Psychotic Disorder
Inhalant Dementia	Volatile Solvents Dementia
Dementia In Paralysis Agitans	Pdd - [Parkinson Disease Dementia]
Dementia Syndrome Of Parkinson Disease	Dementia In Parkinson Disease
Parkinson Related Dementia	Dementia In Huntington Chorea
Hiv - [Human Immunodeficiency Virus] Dementia	Hiv- [Human Immunodeficiency Virus] Associated Cognitive Motor Complex
Hiv- [Human Immunodeficiency Virus] Associated Dementia Complex	Aids - [Acquired Immunodeficiency Syndrome] Dementia Complex
Aids Related Dementia	Dementia Due To Niacin Deficiency

Cerebral Amyloid Angiopathy, Cst3-Related

Cerebral Amyloid Angiopathy	Hereditary Cerebral Hemorrhage With Amyloidosis
Hchwa	Hereditary Cystatin C Amyloid Angiopathy
Cerebral Amyloid Angiopathy, Familial	Amyloidosis, Cerebroarterial, Icelandic Type
Amyloidosis Vi	Cerebral Hemorrhage, Hereditary, With Amyloidosis
Cst3-Related Cerebral Amyloid Angiopathy	Cerebral Hemorrhage, Hereditary, With Amyloidosis, Icelandic Variant
Hereditary Cerebral Hemorrhage With Amyloidosis, Icelandic Variant	Caa, Familial
Cerebral Amyloid Angiopathy, Genetic	Acys Amyloidosis
Cst3-Related Amyloidosis	Cystatin Amyloidosis
Hchwa, Icelandic Type	Hereditary Cerebral Hemorrhage With Amyloidosis, Icelandic Type
Amyloidosis 6	AMYL6
Acys	Caa
Cerebral Amyloid Angiopathy Cst3-Related	Cerebroarterial Amyloidosis Icelandic Type
Cystatin C Amyloidosis	Hccaa
Hchwai	Hchwa-I
Hereditary Cerebral Hemorrhage With Amyloidosis Icelandic Type	Cerebral Amyloid Angiopathy Familial
Angiopathy, Amyloid, Cerebral, Cst3-Related	Hereditary Cerebral Amyloid Angiopathy, Icelandic Type
Familial Cerebral Amyloid Angiopathy	Cerebral Amyloid Angiopathy, Hereditary

Progressive Myoclonus Epilepsy 7

Epm7	Meak
Myoclonus Epilepsy And Ataxia Due To Potassium Channel Mutation	Pme Type 7
Progressive Myoclonic Epilepsy Due To Kv3.1 Deficiency	Progressive Myoclonus Epilepsy Type 7

Glycoproteinosis

Sialidosis	Mucolipidosis Type I
Mucolipidoses	Cherry Red Spot Myoclonus Syndrome
Mucolipidosis I	Myoclonus Cherry Red Spot Syndrome
Type I Mucolipidosis	Lipomucopolysaccharidosis
Disorders Of Glycoprotein Metabolism	Glycoprotein Storage Disorder

Progressive Myoclonus Epilepsy 6

Progressive Myoclonic Epilepsy Type 6	Epm6
Gosr2-Related Progressive Myoclonus Ataxia	North Sea Progressive Myoclonus Epilepsy
Pme Type 6	Progressive Myoclonus Epilepsy Type 6
Epilepsy, Progressive Myoclonic, 6

Progressive Myoclonus Epilepsy 1b

Epm1b

Adolescence-Adult Electroclinical Syndrome

Holoprosencephaly 1

Arhinencephaly	HPE1
Cyclopia	Holoprosencephaly, Familial Alobar
Hpe, Familial	Hpec
Demyer Sequence	Holoprosencephaly-1

Neonatal Period Electroclinical Syndrome

Paraphimosis

Epilepsy, Myoclonic Juvenile

Juvenile Myoclonic Epilepsy	Janz Syndrome
Jme	Myoclonic Epilepsy, Juvenile, Susceptibility To, 1
EJM	Myoclonic Epilepsy, Juvenile
Petit Mal, Impulsive	Myoclonic Epilepsy, Juvenile 1
Myoclonic Epilepsy, Juvenile, 1	Adolescent Myoclonic Epilepsy
Juvenile Myoclonus Epilepsy	Juvenile Myoclonic Epilepsy 1
EJM1	Petit Mal Impulsive
Susceptibility To Juvenile Myoclonic Epilepsy 1	Myoclonic Epilepsy Juvenile
Epilepsy, Myoclonic, Juvenile	Myoclonic Epilepsy Of Janz
Jme - [Juvenile Myoclonic Epilepsy]

Spinocerebellar Ataxia 36

Spinocerebellar Ataxia Type 36	SCA36
Asidan Ataxia	Costa De Morte Ataxia
Asidan	Ataxia, Spinocerebellar, Type 36

Familial Adult Myoclonic Epilepsy

Benign Adult Familial Myoclonus Epilepsy	Bafme
Benign Adult Familial Myoclonic Epilepsy	Fame
Familial Cortical Myoclonic Tremor And Epilepsy	Fcmte
Adcme	Autosomal Dominant Cortical Myoclonus And Epilepsy
Fam	Epilepsy, Myoclonic, Familial Adult
Epilepsy, Myoclonic, Benign Adult Familial, Type 2

Autosomal Dominant Nocturnal Frontal Lobe Epilepsy

Adnfle	Autosomal Dominant Sleep-Related Hypermotor Epilepsy
Enfl	Benign Familial Infantile Seizures 6
Benign Familial Infantile Seizures, 6	Nocturnal Frontal Lobe Epilepsy-4
Enfl1	Epilepsy, Nocturnal Frontal Lobe, 1
Epilepsy, Nocturnal Frontal Lobe, Type 1

Scoliosis

Myoclonic Epilepsy Associated With Ragged-Red Fibers

Merrf Syndrome	MERRF
Fukuhara Syndrome	Myoclonic Epilepsy Associated With Ragged Red Fibers
Myoencephalopathy Ragged-Red Fiber Disease	Myoclonic Epilepsy - Ragged Red Fibers
Myoclonus Epilepsy And Ragged Red Fibers	Myoclonus With Epilepsy And With Ragged Red Fibers
Myoclonic Epilepsy With Ragged Red Fibers	Myoclonic Epilepsy With Ragged-Red Fibers
Fukuhara Disease	Myoclonus Epilepsy Associated With Ragged-Red Fibres
Myoclonus With Epilepsy With Ragged Red Fibers

Neuronal Ceroid Lipofuscinosis

Hereditary Ceroid Lipofuscinosis	Batten Disease
Ncl	Neuronal Ceroid-Lipofuscinoses
Lipofuscinosis, Ceroid, Neuronal	Juvenile Neuronal Ceroid Lipofuscinosis
Cerebromacular Dystrophy	Cerebromacular Degeneration
Ceroid-Lipofuscinosis	Ncl - [Neuronal Ceroid Lipofuscinosis]
Amaurotic Familial Idiocy	Amaurotic Idiocy
Amaurotic Idiot	Neuronal Lipofuscinosis
Pigmentary Retinal Lipoid Neuronal Heredodegeneration

Alzheimer Disease, Familial, 1

Alzheimer Disease	Alzheimer'S Disease
Presenile And Senile Dementia	AD1
Alzheimer Disease, Susceptibility To	Alzheimer Disease, Late-Onset, Susceptibility To
Alzheimer Disease 1, Familial	AD
Familial Alzheimer Disease	Alzheimer Disease, Late-Onset
Alzheimers Dementia	Alzheimer Dementia
Alzheimer Sclerosis	Alzheimer Syndrome
Alzheimer-Type Dementia	Dat
Primary Senile Degenerative Dementia	Sdat
Alzheimer Disease 1	Autosomal Dominant Alzheimer Disease
Early-Onset Alzheimer Disease With Cerebral Amyloid Angiopathy	Late Onset Alzheimer Disease
Alzheimers Disease	Alzheimer Disease, Early-Onset, With Cerebral Amyloid Angiopathy
Late-Onset Alzheimers Disease	Alzheimer'S Disease Pathway Kegg
Dementia Due To Alzheimer'S Disease	Alzheimer Disease Type 1
Alzheimers

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-RS03272	CSTB Human Pre-designed siRNA Set A	Pre-designed Sets	/	Unkown

Orthologs Information

Species	Symbol	Source	ID
Macaca mulatta	CSTB	VGNC	VGNC:71534
Rattus norvegicus	CSTB	RGD	RGD:2435
Mus musculus	CSTB	MGD	MGI:109514
Others	CSTB	NCBI