TIMM21

translocase of inner mitochondrial membrane 21, the group of TIM23 complex

Basic information

Region (hg38): 18:74148523-74160531

Previous symbols: [ "C18orf55" ]

Links

ENSG00000075336 ∙ NCBI:29090 ∙ OMIM:615180 ∙ HGNC:25010 ∙ Uniprot:Q9BVV7 ∙ AlphaFold ∙ GenCC ∙ jax ∙ Sfari ∙ GnomAD ∙ Pubmed ∙ ClinVar

Phenotypes

GenCC

Source: genCC

No genCC data.

ClinVar

This is a list of variants' phenotypes submitted to ClinVar and linked to the TIMM21 gene.

Variants pathogenicity by type

Statistics on ClinVar variants can assist in determining whether a specific variant type in the TIMM21 gene is commonly pathogenic or not.

In the table, we include only reliable ClinVar variants with their consequences to MANE Select, Mane Plus Clinical transcripts, or transcripts with TSL equals 1. Click the count to view the source variants.

Warning: slight differences between displayed counts and the number of variants in ClinVar may occur, primarily due to (1) the application of a different transcript and/or consequence by our variant effect predictor or (2) differences in clinical significance: we classify Benign/Likely benign variants as Likely benign and Pathogenic/Likely pathogenic variants as Likely pathogenic.

Variant type	Pathogenic	Likely pathogenic	VUS	Likely benign	Benign	Sum
synonymous						0
missense			15	2		17
nonsense						0
start loss						0
frameshift						0
inframe indel						0
splice donor/acceptor (+/-2bp)						0
splice region						0
non coding						0
Total	0	0	15	2	0

Variants in TIMM21

This is a list of pathogenic ClinVar variants found in the TIMM21 region.

You can filter this list by clicking the number of variants in the Variants pathogenicity by type table.

Position	Type	Phenotype	Significance	ClinVar
18-74148819-C-T		not specified	Uncertain significance (Jul 19, 2023)
18-74148864-C-T		not specified	Uncertain significance (Aug 15, 2023)
18-74148885-C-T		not specified	Uncertain significance (Dec 26, 2023)
18-74148962-C-G		not specified	Likely benign (Jun 07, 2024)
18-74148976-T-G		not specified	Uncertain significance (Nov 08, 2022)
18-74149079-G-C		not specified	Uncertain significance (Jun 24, 2022)
18-74155156-G-A		not specified	Uncertain significance (Mar 01, 2023)
18-74155309-G-T		not specified	Uncertain significance (Sep 07, 2022)
18-74155344-T-C		not specified	Uncertain significance (Jun 17, 2024)
18-74155366-A-G		not specified	Uncertain significance (Dec 18, 2023)
18-74155398-C-A		not specified	Uncertain significance (Nov 30, 2021)
18-74158020-G-A		not specified	Likely benign (Jan 22, 2024)
18-74158066-G-A		not specified	Uncertain significance (Nov 07, 2022)
18-74158069-G-T		not specified	Uncertain significance (Feb 28, 2023)
18-74158074-C-T		not specified	Uncertain significance (Dec 03, 2021)
18-74158206-C-T		not specified	Likely benign (Feb 07, 2023)
18-74158394-T-C		not specified	Uncertain significance (Aug 16, 2021)
18-74158397-G-A		not specified	Uncertain significance (Apr 18, 2023)
18-74158407-A-G		not specified	Uncertain significance (Jan 31, 2023)

GnomAD

Source: gnomAD

Gene	Type	Bio Type	Transcript	Coding Exons	Length
TIMM21	protein_coding	protein_coding	ENST00000169551	6	10452

pLI Probability LOF Intolerant	pRec Probability LOF Recessive	Individuals with no LOFs	Individuals with Homozygous LOFs	Individuals with Heterozygous LOFs	Defined	p
0.0000933	0.806	125720	0	28	125748	0.000111

	Z-Score	Observed	Expected	Observed/Expected	Mutation Rate	Total Possible in Transcript
Missense	0.00783	136	136	0.998	0.00000715	1588
Missense in Polyphen		34	39.896	0.85221		419
Synonymous	-0.0638	54	53.4	1.01	0.00000286	485
Loss of Function	1.20	8	12.6	0.635	5.57e-7	161

LoF frequencies by population

Ethnicity	Sum of pLOFs	p
African & African-American	0.0000291	0.0000291
Ashkenazi Jewish	0.00	0.00
East Asian	0.000164	0.000163
Finnish	0.000277	0.000277
European (Non-Finnish)	0.000141	0.000123
Middle Eastern	0.000164	0.000163
South Asian	0.000131	0.000131
Other	0.00	0.00

dbNSFP

Source: dbNSFP

• Function: FUNCTION: Participates in the translocation of transit peptide- containing proteins across the mitochondrial inner membrane. Also required for assembly of mitochondrial respiratory chain complex I and complex IV as component of the MITRAC (mitochondrial translation regulation assembly intermediate of cytochrome c oxidase complex) complex. Probably shuttles between the presequence translocase and respiratory-chain assembly intermediates in a process that promotes incorporation of early nuclear-encoded subunits into these complexes. {ECO:0000269|PubMed:23260140}.
• Pathway: Metabolism of proteins;Mitochondrial protein import (Consensus)

Intolerance Scores

• rvis_EVS: -0.25
• rvis_percentile_EVS: 35.75

Haploinsufficiency Scores

• pHI: 0.0421
• hipred: N
• hipred_score: 0.333
• ghis: 0.609

Essentials

• essential_gene_CRISPR: N
• essential_gene_CRISPR2: N
• essential_gene_gene_trap: N
• gene_indispensability_pred: N
• gene_indispensability_score: 0.114

Gene Damage Prediction

	All	Recessive	Dominant
Mendelian	Medium	Medium	Medium
Primary Immunodeficiency	Medium	Medium	Medium
Cancer	Medium	Medium	Medium

Mouse Genome Informatics

• Gene name: Timm21

Gene ontology

• Biological process: protein import into mitochondrial matrix;mitochondrial respiratory chain complex I assembly;mitochondrial respiratory chain complex IV assembly
• Cellular component: TIM23 mitochondrial import inner membrane translocase complex;integral component of membrane
• Molecular function: molecular_function;protein binding