TTC21B - tetratricopeptide repeat domain 21B Gene

Also Known as ATD4; THM1; FAP60; FLA17; SRTD4; CFAP60; IFT139; JBTS11; NPHP12; IFT139B; Nbla10696

Species: Homo sapiens

Gene Type: protein coding

Gene ID: 79809

About TTC21B

Cytogenetic location: 2q24.3 Genomic coordinates (GRCh38): 2:165,873,362-165,953,776 (from NCBI)

This gene has 35 transcripts (splice variants), 204 orthologues, 1 paralogue and is associated with 4 phenotypes. Ubiquitous expression in prostate (RPKM 1.9), ovary (RPKM 1.8) and 25 other tissues.

Summary

This gene encodes a member of TTC21 family, containing several tetratricopeptide repeat (TPR) domains. This protein is localized to the cilium axoneme, and may play a role in retrograde intraflagellar transport in cilia. Mutations in this gene are associated with various ciliopathies, nephronophthisis 12, and asphyxiating thoracic dystrophy 4. [provided by RefSeq, Oct 2011]

TTC21B Products (1)

mRNA	Protein	Name
NM_024753.5	NP_079029.3	tetratricopeptide repeat protein 21B

Gene Ontology

Molecular Function
Biological Process
Cellular Component

Molecular Function GO Annotation	Evidence	References	Source
enables protein binding	IPI IPI: Inferred from physical interaction	29220510	GOA

Biological Process GO Annotation	Evidence	References	Source
acts upstream of or within protein localization to cilium	IMP IMP: Inferred from mutant phenotype	20889716	GOA
involved in regulation of intraciliary retrograde transport	IMP IMP: Inferred from mutant phenotype	27932497	GOA
acts upstream of or within regulation of transcription by RNA polymerase II	IMP IMP: Inferred from mutant phenotype	22302990	GOA

Cellular Component GO Annotation	Evidence	References	Source
part of intraciliary transport particle A	IDA IDA: Inferred from direct assay	20889716	GOA
part of intraciliary transport particle A	IPI IPI: Inferred from physical interaction	27173435	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

TTC21B Protein Structure

TPR_6

TPR_9

TPR_11

TPR_2

TPR_19

TPR_1

0
300
600
900
1200
1316 a.a.

Protein Preferred Names	Protein Names
tetratricopeptide repeat protein 21B	Nephronophthisis type12

Related Diseases

Diseases	Alias
Nephronophthisis 12	NPHP12 Joubert Syndrome 11 JBTS11 Nephronophthisis, Type 12
Short-Rib Thoracic Dysplasia 4 With Or Without Polydactyly	Asphyxiating Thoracic Dystrophy 4 SRTD4 Atd4 Jatd Jeune Asphyxiating Thoracic Dystrophy Jeune Syndrome 4
Infantile Nephronophthisis	Autosomal Recessive Infantile Nphp Autosomal Recessive Infantile Nephronophthisis Nephronophthisis 2
Short-Rib Thoracic Dysplasia 1 With Or Without Polydactyly	Asphyxiating Thoracic Dystrophy 1 Jeune Syndrome SRTD1 Atd1 Asphyxiating Thoracic Dystrophy Of The Newborn Jatd Jeune Asphyxiating Thoracic Dystrophy Thoracic-Pelvic-Phalangeal Dystrophy Atd Asphyxiating Thoracic Dystrophy Chondroectodermal Dysplasia-Like Syndrome Infantile Thoracic Dystrophy Jeune'S Syndrome Thoracic Pelvic Phalangeal Dystrophy Jeune Thoracic Dystrophy
Nephronophthisis 2	NPHP2 Nph2 Nephronophthisis 2, Infantile Infantile Nephronophthisis 2 Infantile Nephronophthisis Nephronophthisis, Type 2
Asphyxiating Thoracic Dystrophy	Jeune Thoracic Dystrophy Jeune Syndrome Asphyxiating Thoracic Dysplasia Short-Rib Thoracic Dysplasia With Or Without Polydactyly Thoracic Pelvic Phalangeal Dystrophy Asphyxiating Thoracic Chondrodystrophy Atd Chondroectodermal Dysplasia-Like Syndrome Infantile Thoracic Dystrophy Jeune Thoracic Dysplasia Thoracic Asphyxiant Dystrophy Thoracic-Pelvic-Phalangeal Dystrophy Short-Rib Thoracic Dysplasia Without Polydactyly Asphyxiating Thoracic Dystrophy Of The Newborn Asphyxiating Thorax Dystrophy
Nephrotic Syndrome, Type 1	Finnish Congenital Nephrosis NPHS1 Cnf Finnish Congenital Nephrotic Syndrome Nephrotic Syndrome Type 1 Nephrosis, Congenital Congenital Nephrotic Syndrome Nephrotic Syndrome, Congenital Congenital Nephrotic Syndrome Finnish Type Congenital Nephrotic Syndrome 1 Nephrosis 1, Congenital, Finnish Type Congenital Nephrotic Syndrome, Finnish Type Nephrotic Syndrome 1 Congenital Nephrotic Syndrome Of The Finnish Type
Senior-Loken Syndrome 1	Senior-Loken Syndrome Renal Dysplasia And Retinal Aplasia Renal-Retinal Syndrome Loken-Senior Syndrome Juvenile Nephronophthisis With Leber Amaurosis SLSN1 Senior-Loken Syndrome-1 Loken Senior Syndrome Senior Loken Syndrome Renal Dysplasia Retinal Aplasia Nephronophthisis With Retinal Dystrophy Renal Dysplasia-Retinal Aplasia Syndrome Slsn
Short-Rib Thoracic Dysplasia 6 With Or Without Polydactyly	Majewski Syndrome SRTD6 Srps2a Short Rib-Polydactyly Syndrome, Majewski Type Polydactyly With Neonatal Chondrodystrophy, Type Ii Short Rib-Polydactyly Syndrome Type Iia Short Rib-Polydactyly Syndrome Type 2 Short Rib-Polydactyly Syndrome Type Ii Short Rib-Polydactyly Syndrome, Type Ii Srps, Type Ii Short Rib-Polydactyly Syndrome, Type Iia Polydactyly With Neonatal Chondrodystrophy Type 2 Srps Type 2 Short Rib-Polydactyly Syndrome Majewski Type Polydactyly With Neonatal Chondrodystrophy Type Ii Short Rib-Polydactyly Syndrome 2a Srps Type Ii
Nephronophthisis	Medullary Cystic Disease Medullary Cystic Kidney Nph Nphp Kidney Disease, Cystic, Medullary
Nephrotic Syndrome	Finnish Congenital Nephrotic Syndrome Ns - [Nephrotic Syndrome] Nephrosis Syndrome Nephrosis Nos Glomerular Lesion Nephrosis
Short-Rib Thoracic Dysplasia 12	Beemer-Langer Syndrome Type Iv Short Rib Polydactyly Syndrome Short Rib-Polydactyly Syndrome Type 4 Short Rib-Polydactyly Syndrome, Beemer Type SRTD12 Short Rib-Polydactyly Syndrome, Type Iv Srps4 Srps Iv Short Rib Syndrome, Beemer Type Beemer Langer Syndrome Srps Type 4 Short Rib Polydactyly Syndrome Beemer-Langer Type Short Rib-Polydactyly Syndrome Beemer Type Short Rib-Polydactyly Syndrome Type Iv Short Rib-Polydactyly Syndrome, Beemer-Langer Type
Juvenile Nephronophthisis	Nephronophthisis Nephronophthisis, Familial Juvenile
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
Fundus Dystrophy	Retinal Dystrophy Retinal Dystrophies Dystrophy, Retinal
Joubert Syndrome 1	Joubert Syndrome Jbts Cerebellooculorenal Syndrome 1 JBTS1 Joubert-Boltshauser Syndrome Cerebelloparenchymal Disorder Iv Cpd4 Cors1 Joubert Syndrome And Related Disorders Jsrd Familial Aplasia Of The Vermis Joubert Syndrome Related Disorders Js Cerebellar Vermis Agenesis Cerebelloparenchymal Disorder 4 Agenesis Of Cerebellar Vermis Cerebello-Oculo-Renal Syndrome Cors Joubert-Bolthauser Syndrome Cpd Iv Classic Joubert Syndrome Joubert Syndrome Type A Pure Joubert Syndrome Cerebello-Oculo-Renal Syndrome 1 Joubert Syndrome-1 Joubert Syndrome, Type 1 Joubert'S Syndrome
Ciliopathy
Bardet-Biedl Syndrome	Bbs Biedl-Bardet Syndrome
Connective Tissue Disease	Connective Tissue Diseases Connective Tissue Disorder Abnormality Of Connective Tissue Disorder Of Connective Tissue Connective Tissue Disorders
Short-Rib Thoracic Dysplasia 7 With Or Without Polydactyly	SRTD7 Srps5 Short Rib-Polydactyly Syndrome Type V Short-Rib Thoracic Dysplasia 7/20 With Polydactyly, Digenic Short Rib-Polydactyly Syndrome, Type V Short Rib-Polydactyly Syndrome Type 5 Srps Type V SRTD7/20 Short-Rib Thoracic Dysplasia 7 Without Polydactyly
Ellis-Van Creveld Syndrome	Chondroectodermal Dysplasia Mesoectodermal Dysplasia EVC Ellis Van Creveld Syndrome Mesodermic Dysplasia Ellis-Van Creveld Dysplasia
Polydactyly	Non-Syndromic Polydactyly Polydactyly, Postaxial Postaxial Polydactyly Supernumerary Digit Extra Digits Hyperdactyly Polydactylia Polydactylism Supernumerary Digits
Cranioectodermal Dysplasia	Sensenbrenner Syndrome Levin Syndrome 1 Ced Levin Syndrome Dysplasia, Cranioectodermal
Joubert Syndrome 17	JBTS17 Joubert Syndrome, Type 17
Diabetes Insipidus, Nephrogenic, 2, Autosomal	Diabetes Insipidus, Nephrogenic, Autosomal NDI2 Diabetes Insipidus, Nephrogenic, Type Ii Diabetes Insipidus, Nephrogenic, 2 Nephrogenic Diabetes Insipidus Type 2 Autosomal Nephrogenic Diabetes Insipidus-2 Diabetes Insipidus, Nephrogenic Type 2 ANDI Diabetes Insipidus Nephrogenic Type 2 Doid:0081061 Nephrogenic Diabetes Insipidus Congenital Nephrogenic Diabetes Insipidus Adh-Resistant Diabetes Insipidus
Short-Rib Thoracic Dysplasia 3 With Or Without Polydactyly	Asphyxiating Thoracic Dystrophy 3 Saldino-Noonan Syndrome SRTD3 Atd3 Srps1 Srps3 Verma-Naumoff Syndrome Srps2b Short Rib-Polydactyly Syndrome, Verma-Naumoff Type Short Rib-Polydactyly Syndrome, Type I Polydactyly With Neonatal Chondrodystrophy, Type I Polydactyly With Neonatal Chondrodystrophy, Type Iii Short Rib-Polydactyly Syndrome, Type Iib Short Rib-Polydactyly Syndrome Type 3 Polydactyly With Neonatal Chondrodystrophy Type Iii Short Rib-Polydactyly Syndrome Type Iii Short Rib-Polydactyly Syndrome Type 1 Short Rib-Polydactyly Syndrome, Saldino-Noonan Type Majewski Syndrome Short Rib-Polydactyly Syndrome, Type Iii Type I Short Rib Polydactyly Syndrome Srps Type 3 Short Rib Polydactyly Syndrome Verma Naumoff Type Verma Naumoff Syndrome Polydactyly With Neonatal Chondrodystrophy Type 1 Srps Type 1 Short Rib-Polydactyly Syndrome Saldino-Noonan Type Jatd Jeune Asphyxiating Thoracic Dystrophy Jeune Syndrome 3 Polydactyly With Neonatal Chondrodystrophy Type I Short Rib-Polydactyly Syndrome Type I Short Rib-Polydactyly Syndrome Type Iib Srps Type Iib Srps Type Iii
Short-Rib Thoracic Dysplasia 5 With Or Without Polydactyly	Asphyxiating Thoracic Dystrophy 5 SRTD5 Atd5 Jatd Jeune Asphyxiating Thoracic Dystrophy Jeune Syndrome 5
End Stage Renal Disease	End Stage Renal Failure End-Stage Kidney Disease Kidney Failure, Chronic Chronic Kidney Disease Stage 5
Hydrolethalus Syndrome 1	Hydrolethalus Syndrome HLS1 Salonen-Herva-Norio Syndrome Hls Hydrolethalus Hydrolethalus Syndrome, Type 1
Retinitis Pigmentosa 37	RP37 Retinitis Pigmentosa-37 Retinitis Pigmentosa, Type 37
Weyers Acrofacial Dysostosis	Curry-Hall Syndrome Weyers Acrodental Dysostosis WAD Acrodental Dysostosis Of Weyers Acrofacial Dysostosis, Weyers Type Acrofacial Dysostosis Of Weyers Curry Hall Syndrome
Short-Rib Thoracic Dysplasia 9 With Or Without Polydactyly	Conorenal Syndrome Saldino-Mainzer Syndrome SRTD9 Mainzer-Saldino Syndrome Mzsds Mainzer-Saldino Disease Renal Dysplasia, Retinal Pigmentary Dystrophy, Cerebellar Ataxia, And Skeletal Dysplasia Renal Dysplasia, Retinal Pigmentary Dystrophy, Cerebellar Ataxia And Skeletal Dysplasia Renal Dysplasia, Retinal Pigmentary Dystrophy, Cerebellar Ataxia And Skeletal Dy Mainzer Saldino Syndrome Conorenal Dysplasia Mainzer-Saldino Chondrodysplasia Saldino-Mainzer Dysplasia Short-Rib Thoracic Dysplasia 9 Renal Dysplasia-Retinal Pigmentary Dystrophy-Cerebellar Ataxia-Skeletal Dysplasia Syndrome Mss Renal Dysplasia Retinal Pigmentary Dystrophy Cerebellar Ataxia And Skeletal Dysplasia
Joubert Syndrome 13	JBTS13 Joubert Syndrome, Type 13
Meckel Syndrome, Type 1	Meckel-Gruber Syndrome Meckel Syndrome Dysencephalia Splanchnocystica Meckel Syndrome 1 MKS1 Mks Gruber Syndrome Meckel-Gruber Syndrome, Type 1 Mes Dysencephalia Splachnocystica Meckel Gruber Syndrome Meckel Syndrome Type 1
Nephronophthisis 9	NPHP9 Nephronophthisis, Type 9
Microcephaly, Autosomal Dominant	Autosomal Dominant Microcephaly Microcephaly Autosomal Dominant Autosomal Dominant Primary Microcephaly Microcephaly With Autosomal Dominant Inheritance
Retinal Degeneration	Degeneration Of Retina
Acrofacial Dysostosis
Joubert Syndrome 3	JBTS3 Joubert Syndrome With Ocular Defect Joubert Syndrome With Ocular Anomalies Js-O Joubert Syndrome With Retinopathy Joubert Syndrome-3 Joubert Syndrome, Type 3
Coach Syndrome 1	Coach Syndrome Joubert Syndrome With Congenital Hepatic Fibrosis Gentile Syndrome Joubert Syndrome With Hepatic Defect Js-H COACH1 Cerebellar Vermis Hypo/Aplasia, Oligophrenia, Congenital Ataxia, Ocular Coloboma, And Hepatic Fibrosis Cerebellar Vermis Hypoplasia-Oligophrenia-Congenital Ataxia-Coloboma-Hepatic Fibrosis Cerebellar Vermis Hypo/Aplasia, Oligophrenia, Ataxia Congenital, Coloboma, And Hepatic Fibrosis Cerebellar Vermis Hypo/Aplasia Oligophrenia Congenital Ataxia Ocular Coloboma And Hepatic Fibrosis
Orofaciodigital Syndrome Vi	OFD6 Varadi-Papp Syndrome Varadi Syndrome Joubert Syndrome With Orofaciodigital Defect Orofaciodigital Syndrome Type 6 Orofaciodigital Syndrome 6 Oral-Facial-Digital Syndrome, Type Vi Ofds Vi Polydactyly, Cleft Lip/Palate Or Lingual Lump, And Psychomotor Retardation Polydactyly Cleft Lip Palate Psychomotor Retardation Oral-Facial-Digital Syndrome Type 6 Polydactyly-Cleft Lip/Palate-Psychomotor Retardation Syndrome Polydactyly - Cleft Lip/Palate - Psychomotor Retardation Váradi Syndrome Váradi-Papp Syndrome Joubert Syndrome With Oral-Facial-Digital Syndrome Oral-Facial-Digital Syndrome 6 Joubert-Orofaciodigital Syndrome Orofaciodigital Syndrome, Type Vi
Cystic Kidney Disease	Renal Cyst Simple Renal Cyst Kidney Cysts Kidney Diseases, Cystic Renal Cysts Kidney Cyst Cystic Kidney Congenital Cystic Kidney Disease Cystic Kidney Diseases Bosniak 1 Cyst
Polycystic Kidney Disease 4 With Or Without Polycystic Liver Disease	Autosomal Recessive Polycystic Kidney Disease Arpkd Polycystic Kidney Disease, Autosomal Recessive Polycystic Kidney And Hepatic Disease 1 Pkhd1 PKD4 Polycystic Kidney Disease 4 With Or Without Hepatic Disease Polycystic Kidney Disease, Infantile, Type I Polycystic Kidney Disease, Infantile Type Polycystic Kidney, Autosomal Recessive Pkd3, Formerly Polycystic Kidney Disease 4, With Or Without Hepatic Disease Arpkd/Chf Ar-Pkd Polycystic Kidney Disease 4, With Or Without Polycystic Liver Disease Infantile Polycystic Kidney Disease Type I Pkd3 Kidney, Polycystic, Disease, Type 4, With/Without Hepatic Disease Polycystic Kidney Disease 3, Autosomal Dominant
Visceral Heterotaxy	Situs Ambiguus Heterotaxia Heterotaxy Syndrome Heterotaxy Lateralization Defect Situs Ambiguous Left Isomerism Htx Ivemark Syndrome Right Isomerism Situs Ambiguus Viscerum Incomplete Situs Inversus Partial Situs Inversus Heterotaxy, Visceral Asplenia Syndrome Bilateral Left-Sidedness Polysplenia Syndrome Moller Syndrome
Situs Inversus	Situs Inversus Viscerum Laterality Sequence Complete Transposition Siv
Autosomal Dominant Polycystic Kidney Disease	Polycystic Kidney Disease, Adult Type Adpkd Polycystic Kidney Diseases Polycystic Kidney, Autosomal Dominant Congenital Biliary Ectasias Polycystic Kidney And Hepatic Disease 1 Polycystic Kidney Disease, Autosomal Dominant Kidney, Polycystic, Disease, Autosomal Dominant Adult Polycystic Kidney Disease Polycystic Kidney, Adult Type Apckd - [Autosomal Polycystic Kidney Disease]
Coloboma Of Macula	Coloboma Congenital Ocular Coloboma Microphthalmia, Isolated, With Coloboma Agenesis Of Macula Hereditary Macular Coloboma Ocular Coloboma Coloboma Of Eye Macular Coloboma Uveoretinal Coloboma
Polycystic Kidney Disease	Polycystic Kidney Diseases Pkd Polycystic Renal Disease Kidney Disease, Polycystic Polycystic Kidney, Autosomal Dominant
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
Leber Plus Disease	Leber Congenital Amaurosis Lca Leber'S Amaurosis Leber'S Disease Amaurosis Congenita Of Leber Amaurosis Congenita Of Leber, Type 1 Lhon Plus Disease Congenital Absence Of The Rods And Cones Congenital Retinal Blindness Crb Congenital Amaurosis Of Retinal Origin Leber'S Congenital Amaurosis Leber Congenital Amaurosis 1 Leber'S Congenital Tapetoretinal Degeneration Leber'S Congenital Tapetoretinal Dysplasia Lca1 Leber Congenital Amaurosis Type 1 Retinal Blindness, Congenital Amaurosis, Leber Congenital Dysgenesis Neuroepithelialis Retinae Hereditary Epithelial Dysplasia Of Retina Hereditary Retinal Aplasia Heredoretinopathia Congenitalis Leber Abiotrophy Leber Congenital Tapetoretinal Degeneration Lebers Congenital Amaurosis Optic Atrophy, Hereditary, Leber
Retinitis Pigmentosa	RP Rod-Cone Dystrophy Autosomal Recessive Retinitis Pigmentosa Non-Syndromic Retinitis Pigmentosa Pericentral Pigmentary Retinopathy Pigmentary Retinopathy Tapetoretinal Degeneration Rcd Retinitis Pigmentosa Autosomal Recessive ARRP Retinitis Pigmentosa, Autosomal Recessive Retinitis Pigmentosa 1

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 (1)

Cat. No.	Product Name	Effect	Purity	Rare Diseases
HY-RS15202	TTC21B Human Pre-designed siRNA Set A	Pre-designed Set	/	Unkown

Orthologs Information

Species	Symbol	Source	ID
Canis familiaris	TTC21B	VGNC	VGNC:47943
Felis catus	TTC21B	VGNC	VGNC:66657
Mus musculus	TTC21B	MGD	MGI:1920918
Macaca mulatta	TTC21B	VGNC	VGNC:79528
Rattus norvegicus	TTC21B	RGD	RGD:1565122
Bos taurus	TTC21B	VGNC	VGNC:36460
Others	TTC21B	NCBI