TFB1M
Dimethyladenosine transferase 1, mitochondrial
Also known as: CGI-75, mtTFB, TFB1M_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q8WVM0
- Gene
- TFB1M
- Ensembl
- ENSG00000029639
- Chromosome
- 6
- Canonical length
- 346 aa
- Protein class
- Disease related genes, Predicted intracellular proteins
OverviewNCBI Gene
The protein encoded by this gene is a dimethyltransferase that methylates the conserved stem loop of mitochondrial 12S rRNA. The encoded protein also is part of the basal mitochondrial transcription complex and is necessary for mitochondrial gene expression. The methylation and transcriptional activities of this protein are independent of one another. Variations in this gene may influence the severity of aminoglycoside-induced deafness (AID).[provided by RefSeq, Aug 2010]
Canonical amino-acid sequenceUniProt
346 residues, UniProt reviewed canonical sequence.
>Q8WVM0|TFB1M
1 MAASGKLSTC RLPPLPTIRE IIKLLRLQAA KQLSQNFLLD LRLTDKIVRK AGNLTNAYVY
61 EVGPGPGGIT RSILNADVAE LLVVEKDTRF IPGLQMLSDA APGKLRIVHG DVLTFKVEKA
121 FSESLKRPWE DDPPNVHIIG NLPFSVSTPL IIKWLENISC RDGPFVYGRT QMTLTFQKEV
181 AERLAANTGS KQRSRLSVMA QYLCNVRHIF TIPGQAFVPK PEVDVGVVHF TPLIQPKIEQ
241 PFKLVEKVVQ NVFQFRRKYC HRGLRMLFPE AQRLESTGRL LELADIDPTL RPRQLSISHF
301 KSLCDVYRKM CDEDPQLFAY NFREELKRRK SKNEEKEEDD AENYRLLocalizationUniProt · AlphaFold · HPA
Whether an antibody against TFB1M can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.26
- Highest tissue expression
- 9.4 nTPM
Expression across tissuesHPA
Tissue
- cerebral cortex: 9.4 nTPM
- skeletal muscle: 9.4 nTPM
- adrenal gland: 8.6 nTPM
- heart muscle: 6.9 nTPM
- liver: 6.7 nTPM
- testis: 6.7 nTPM
Single-cell type
- early spermatids: 236 nCPM
- late primary spermatocytes: 207 nCPM
- sertoli cells: 142 nCPM
- adrenal cortex cells: 121 nCPM
- pituicytes/fscs: 101 nCPM
- retinal horizontal cells: 96 nCPM
Immune cell
- naive CD4 T-cell: 7.9 nTPM
- T-reg: 7.8 nTPM
- memory B-cell: 7.6 nTPM
- naive B-cell: 7.1 nTPM
- NK-cell: 6.7 nTPM
- myeloid DC: 6.5 nTPM
Brain region
- cerebral cortex: 12 nTPM
- cerebellum: 9.5 nTPM
- basal ganglia: 8.8 nTPM
- white matter: 8.6 nTPM
- thalamus: 7.3 nTPM
- hypothalamus: 7.2 nTPM
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 1.4
- gnomAD pLI
- 0
- gnomAD missense Z
- 0.15
- DepMap mean gene effect
- -0.26
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- mitochondrial small ribosomal subunit assembly
- rRNA methylation
- rRNA modification
- transcription initiation at mitochondrial promoter
Molecular functions
- DNA binding
- mitochondrial transcription factor activity
- RNA binding
- rRNA (adenine-N6,N6-)-dimethyltransferase activity
- S-adenosyl-L-methionine binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Ribosomal RNA adenine methyltransferase KsgA/Erm
- Ribosomal RNA adenine dimethylase
- Ribosomal RNA adenine methylase transferase, conserved site
- Ribosomal RNA adenine methylase transferase, N-terminal
- S-adenosyl-L-methionine-dependent methyltransferase superfamily
- Ribosomal RNA adenine dimethylase
- rRNA adenine dimethylase-like, C-terminal
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of TFB1M in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads TFB1M as an antibody target. Whether an autoantibody or antibody against TFB1M could matter depends on whether native TFB1M is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
TFB1M is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label TFB1M as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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