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TTYH1 tweety family member 1 [ Homo sapiens (human) ]

Gene ID: 57348, updated on 9-Jun-2025
Official Symbol
TTYH1provided by HGNC
Official Full Name
tweety family member 1provided by HGNC
Primary source
HGNC:HGNC:13476
See related
Ensembl:ENSG00000167614 MIM:605784; AllianceGenome:HGNC:13476
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Homo sapiens
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Summary
This gene encodes a member of the tweety family of proteins. Members of this family function as chloride anion channels. The encoded protein functions as a calcium(2+)-independent, volume-sensitive large conductance chloride(-) channel. Three transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jan 2011]
Expression
Biased expression in brain (RPKM 71.7) and testis (RPKM 20.0) See more
Orthologs
mouse all
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See TTYH1 in Genome Data Viewer
Location:
19q13.42
Exon count:
14
Annotation release Status Assembly Chr Location
RS_2024_08 current GRCh38.p14 (GCF_000001405.40) 19 NC_000019.10 (54415464..54436904)
RS_2024_08 current T2T-CHM13v2.0 (GCF_009914755.1) 19 NC_060943.1 (57508741..57530183)
RS_2024_09 previous assembly GRCh37.p13 (GCF_000001405.25) 19 NC_000019.9 (54926638..54948084)

Chromosome 19 - NC_000019.10Genomic Context describing neighboring genes Neighboring gene MPRA-validated peak3554 silencer Neighboring gene leukocyte immunoglobulin like receptor A4 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr19:54868647-54869166 Neighboring gene leukocyte associated immunoglobulin like receptor 1 Neighboring gene NANOG hESC enhancer GRCh37_chr19:54903053-54903600 Neighboring gene LIM domain-containing protein A-like Neighboring gene H3K4me1 hESC enhancer GRCh37_chr19:54933359-54934162 Neighboring gene Sharpr-MPRA regulatory region 3780 Neighboring gene H3K27ac hESC enhancer GRCh37_chr19:54960127-54961034 Neighboring gene LENG8 antisense RNA 1 Neighboring gene leukocyte receptor cluster member 8 Neighboring gene leukocyte receptor cluster member 9

Go to nucleotide: Graphics FASTA GenBank

  • Project title: Tissue-specific circular RNA induction during human fetal development
  • Description: 35 human fetal samples from 6 tissues (3 - 7 replicates per tissue) collected between 10 and 20 weeks gestational time were sequenced using Illumina TruSeq Stranded Total RNA
  • BioProject: PRJNA270632
  • Publication: PMID 26076956
  • Analysis date: Mon Apr 2 22:54:59 2018

Related articles in PubMed

  1. Human and mouse homologues of the Drosophila melanogaster tweety (tty) gene: a novel gene family encoding predicted transmembrane proteins. Campbell HD, et al. Genomics, 2000 Aug 15. PMID 10950931
  2. Fusion of TTYH1 with the C19MC microRNA cluster drives expression of a brain-specific DNMT3B isoform in the embryonal brain tumor ETMR. Kleinman CL, et al. Nat Genet, 2014 Jan. PMID 24316981
  3. Tweety-Homolog 1 Drives Brain Colonization of Gliomas. Jung E, et al. J Neurosci, 2017 Jul 19. PMID 28607172, Free PMC Article
  4. Validation of analytical breast cancer microarray analysis in medical laboratory. Darweesh AS, et al. Med Oncol, 2014 Oct. PMID 25182704
  5. Cryo-EM structures of the TTYH family reveal a novel architecture for lipid interactions. Sukalskaia A, et al. Nat Commun, 2021 Aug 12. PMID 34385445, Free PMC Article

See all (23) citations in PubMed

GeneRIFs: Gene References Into Functions

What's a GeneRIF?
  1. Drosophila tweety facilitates autophagy to regulate mitochondrial homeostasis and bioenergetics in Glia.
    Title: Drosophila tweety facilitates autophagy to regulate mitochondrial homeostasis and bioenergetics in Glia.
  2. Cryo-EM structures of the TTYH family reveal a novel architecture for lipid interactions.
    Title: Cryo-EM structures of the TTYH family reveal a novel architecture for lipid interactions.
  3. In this report, we identify tweety-homolog 1 (Ttyh1), a membrane protein linked to neuronal development, as a potent driver of tumor microtube (TM)-mediated brain colonization by glioma cells.
    Title: Tweety-Homolog 1 Drives Brain Colonization of Gliomas.
  4. TTYH1 was not expressed in either the malignant or the control samples
    Title: Validation of analytical breast cancer microarray analysis in medical laboratory.
  5. Fusion of TTYH1 with the C19MC microRNA cluster drives expression of a brain-specific DNMT3B isoform in the embryonal brain tumor.
    Title: Fusion of TTYH1 with the C19MC microRNA cluster drives expression of a brain-specific DNMT3B isoform in the embryonal brain tumor ETMR.
  6. Nedd4-2 differentially interacts with and regulates TTYH1-3
    Title: The ubiquitin-protein ligase Nedd4-2 differentially interacts with and regulates members of the Tweety family of chloride ion channels.
Submit: New GeneRIF Correction

Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

EBI GWAS Catalog

Description
Genome-wide association study identifies loci affecting blood copper, selenium and zinc.
EBI GWAS Catalog

See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

Products Interactant Other Gene Complex Source Pubs Description

Markers

Homology

Gene Ontology Provided by GOA

Function Evidence Code Pubs
enables calcium ion binding IEA
Inferred from Electronic Annotation
more info
  
NOT enables chloride channel activity IDA
Inferred from Direct Assay
more info
 PubMed 
enables chloride channel activity TAS
Traceable Author Statement
more info
  
enables intracellularly calcium-gated chloride channel activity IBA
Inferred from Biological aspect of Ancestor
more info
  
enables iron ion transmembrane transporter activity NAS
Non-traceable Author Statement
more info
 PubMed 
enables protein binding IPI
Inferred from Physical Interaction
more info
 PubMed 
NOT enables volume-sensitive anion channel activity IDA
Inferred from Direct Assay
more info
 PubMed 
enables volume-sensitive chloride channel activity IBA
Inferred from Biological aspect of Ancestor
more info
  
enables volume-sensitive chloride channel activity IDA
Inferred from Direct Assay
more info
 PubMed 
Process Evidence Code Pubs
involved_in L-glutamate transmembrane transport IEA
Inferred from Electronic Annotation
more info
  
involved_in L-glutamate transmembrane transport ISS
Inferred from Sequence or Structural Similarity
more info
  
acts_upstream_of_or_within Notch signaling pathway IEA
Inferred from Electronic Annotation
more info
  
involved_in cell adhesion IEA
Inferred from Electronic Annotation
more info
  
acts_upstream_of_or_within cell morphogenesis IEA
Inferred from Electronic Annotation
more info
  
acts_upstream_of_or_within cell-cell adhesion IEA
Inferred from Electronic Annotation
more info
  
acts_upstream_of_or_within cell-substrate adhesion IEA
Inferred from Electronic Annotation
more info
  
involved_in chloride transmembrane transport IEA
Inferred from Electronic Annotation
more info
  
involved_in chloride transport IDA
Inferred from Direct Assay
more info
 PubMed 
involved_in chloride transport IEA
Inferred from Electronic Annotation
more info
  
acts_upstream_of_or_within filopodium assembly IEA
Inferred from Electronic Annotation
more info
  
acts_upstream_of_or_within gene expression IEA
Inferred from Electronic Annotation
more info
  
involved_in iron ion transmembrane transport IEA
Inferred from Electronic Annotation
more info
  
involved_in iron ion transport NAS
Non-traceable Author Statement
more info
 PubMed 
acts_upstream_of_or_within mitotic cell cycle IEA
Inferred from Electronic Annotation
more info
  
involved_in monoatomic ion transmembrane transport IEA
Inferred from Electronic Annotation
more info
  
involved_in monoatomic ion transmembrane transport TAS
Traceable Author Statement
more info
  
involved_in monoatomic ion transport IEA
Inferred from Electronic Annotation
more info
  
acts_upstream_of_or_within neurogenesis IEA
Inferred from Electronic Annotation
more info
  
acts_upstream_of_or_within stem cell differentiation IEA
Inferred from Electronic Annotation
more info
  
acts_upstream_of_or_within stem cell proliferation IEA
Inferred from Electronic Annotation
more info
  
Component Evidence Code Pubs
part_of chloride channel complex IEA
Inferred from Electronic Annotation
more info
  
located_in filopodium membrane IEA
Inferred from Electronic Annotation
more info
  
located_in filopodium tip IEA
Inferred from Electronic Annotation
more info
  
is_active_in membrane IEA
Inferred from Electronic Annotation
more info
  
located_in membrane IEA
Inferred from Electronic Annotation
more info
  
located_in membrane TAS
Traceable Author Statement
more info
 PubMed 
is_active_in plasma membrane IBA
Inferred from Biological aspect of Ancestor
more info
  
located_in plasma membrane IDA
Inferred from Direct Assay
more info
 PubMed 
located_in plasma membrane IEA
Inferred from Electronic Annotation
more info
  
located_in plasma membrane TAS
Traceable Author Statement
more info
  
is_active_in smooth endoplasmic reticulum membrane IBA
Inferred from Biological aspect of Ancestor
more info
  
located_in smooth endoplasmic reticulum membrane IEA
Inferred from Electronic Annotation
more info
  
is_active_in synapse IEA
Inferred from Electronic Annotation
more info
  
Preferred Names
protein tweety homolog 1
Names
hTTY1
tweety homolog 1
volume-regulated anion channel subunit TTYH1

NEW Try the new Transcript table

RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

  1. NM_001005367.3 → NP_001005367.1  protein tweety homolog 1 isoform 2

    See identical proteins and their annotated locations for NP_001005367.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (2), also known as hTTYH1s, encodes the longest isoform (2).
    Source sequence(s)
    AB188496, AC245884, AF177909, AK289468, BU737336
    Consensus CDS
    CCDS33106.1
    UniProtKB/Swiss-Prot
    Q9H313
    Related
    ENSP00000365714.3, ENST00000376531.3
    Conserved Domains (1) summary
    cd07912
    Location:6 → 425
    Tweety_N; N-terminal domain of the protein encoded by the Drosophila tweety gene and related proteins, a family of chloride ion channels

  2. NM_001201461.2 → NP_001188390.1  protein tweety homolog 1 isoform 3

    See identical proteins and their annotated locations for NP_001188390.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (3) uses an alternate in-frame splice junction at the 5' end of an exon and contains an alternate exon compared to variant 2, that causes a frameshift. The resulting isoform (1) has a shorter and distinct C-terminus compared to isoform 2.
    Source sequence(s)
    AB188496, AC245884, BU737336
    Consensus CDS
    CCDS56102.1
    UniProtKB/Swiss-Prot
    Q9H313
    Related
    ENSP00000301194.4, ENST00000301194.8
    Conserved Domains (1) summary
    cd07912
    Location:6 → 422
    Tweety_N; N-terminal domain of the protein encoded by the Drosophila tweety gene and related proteins, a family of chloride ion channels

  3. NM_020659.4 → NP_065710.1  protein tweety homolog 1 isoform 1

    See identical proteins and their annotated locations for NP_065710.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (1) contains an alternate exon compared to variant 2, that causes a frameshift. The resulting isoform (1) has a shorter and distinct C-terminus compared to isoform 2.
    Source sequence(s)
    AB188496, AC245884, AF177909, BU737336
    Consensus CDS
    CCDS12893.1
    UniProtKB/Swiss-Prot
    B0VJY3, B0VJY4, B0VJY5, B2VAL9, Q5U682, Q68A17, Q6L750, Q6ZTE5, Q8WUU2, Q9H313
    Related
    ENSP00000365713.3, ENST00000376530.8
    Conserved Domains (1) summary
    cd07912
    Location:6 → 422
    Tweety_N; N-terminal domain of the protein encoded by the Drosophila tweety gene and related proteins, a family of chloride ion channels

RefSeqs of Annotated Genomes: GCF_000001405.40-RS_2024_08

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p14 Primary Assembly

Genomic

  1. NC_000019.10 Reference GRCh38.p14 Primary Assembly

    Range
    54415464..54436904
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

Reference GRCh38.p14 ALT_REF_LOCI_1

Genomic

  1. NW_003571054.1 Reference GRCh38.p14 ALT_REF_LOCI_1

    Range
    321982..343428
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

Reference GRCh38.p14 ALT_REF_LOCI_7

Genomic

  1. NW_003571060.1 Reference GRCh38.p14 ALT_REF_LOCI_7

    Range
    320158..341592
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

Reference GRCh38.p14 ALT_REF_LOCI_9

Genomic

  1. NT_187693.1 Reference GRCh38.p14 ALT_REF_LOCI_9

    Range
    397752..419198
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

Alternate T2T-CHM13v2.0

Genomic

  1. NC_060943.1 Alternate T2T-CHM13v2.0

    Range
    57508741..57530183
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)
Nucleotide Protein
Heading Accession and Version
Protein Accession Links
GenPept Link UniProtKB Link
Q9H313.1 GenPept UniProtKB/Swiss-Prot:Q9H313

Gene LinkOut

The following LinkOut resources are supplied by external providers. These providers are responsible for maintaining the links.

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