Reading the record for NDUFA3 from HGNC, NCBI Gene and Ensembl.Still reading. A first read of a gene can take a while; this page waits up to 115 seconds for it, and its scripts then bring in the page, or a line saying what did not arrive.
The full name, the identifiers, the location and the notes from the sources arrive with the record. Nothing is filled in ahead of it.
Order door
The door to order for NDUFA3 opens with the record, which decides which product it carries. The order page itself is open now.
Cytogenetic band 19q13.42NCBI: 19:54,102,855-54,107,568 on the plus strand, GRCh38.p14 (GCF_000001405.40), sequence NC_000019.10, annotation GCF_000001405.40-RS_2025_08 of 2025-08-01Ensembl: 19:54,102,728-54,111,522 on the plus strand, GRCh38.p14 (GCA_000001405.29), release 116Coordinates are one-based with both ends included, as each source reports them.
NCBI places this gene on more than one sequence of GRCh38.p14 (19 NC_000019.10, 19 NT_187693.1, 19 NW_003571054.1, 19 NW_003571055.2, 19 NW_003571056.2, 19 NW_003571057.2, 19 NW_003571058.2, 19 NW_003571059.2, 19 NW_003571060.1, 19 NW_003571061.2); the coordinates shown are the 19 placement
Silence this gene
The order page opens with NDUFA3 and human filled in. The sequences are designed against the transcripts below; the price is on that page.
Predicted to enable NADH dehydrogenase (ubiquinone) activity.
NCBI Gene summary
Ready in a moment
Reading NCBI Gene and UniProt.Still reading. A first read of a gene can take a while; this page waits up to 30 seconds for it, and its scripts then bring in the panel, or a line saying what did not arrive.
02 / Transcripts and isoforms
The RNA a design targets
Reading NCBI Datasets and Ensembl.Still reading. A first read of a gene can take a while; this page waits up to 80 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.
Ready in a moment
Reading NCBI Datasets and Ensembl.Still reading. A first read of a gene can take a while; this page waits up to 80 seconds for it, and its scripts then bring in the panel, or a line saying what did not arrive.
03 / Expression by tissue
Where NDUFA3 is expressed
Reading GTEx and the Human Protein Atlas.Still reading. A first read of a gene can take a while; this page waits up to 80 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.
Ready in a moment
04 / Protein
The protein NDUFA3 encodes
Reading UniProt, InterPro, AlphaFold DB and PDBe.Still reading. A first read of a gene can take a while; this page waits up to 80 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.
Ready in a moment
05 / Interactions
Proteins STRING associates with NDUFA3
Reading STRING.Still reading. A first read of a gene can take a while; this page waits up to 50 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.
Ready in a moment
06 / Pathways
Where NDUFA3 acts, as Reactome curates it
Reading UniProt and Reactome.Still reading. A first read of a gene can take a while; this page waits up to 60 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.
Ready in a moment
07 / Disease associations
Diseases linked to NDUFA3
288 Open Targets disease associations; type 2 diabetes mellitus first, at 0.61.
Open Targets
Ready in a moment
08 / Variants
Classified variants of NDUFA3
Reading ClinVar.Still reading. A first read of a gene can take a while; this page waits up to 60 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.
Ready in a moment
09 / Constraint
How much variation NDUFA3 tolerates
Reading gnomAD and Open Targets.Still reading. A first read of a gene can take a while; this page waits up to 45 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.
Ready in a moment
10 / Orthologs
The same gene in mouse, rat and human
Reading the Alliance, NCBI, Ensembl Compara and RGD.Still reading. A first read of a gene can take a while; this page waits up to 145 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.
Ready in a moment
11 /MicroRNAs
MicroRNAs hosted within NDUFA3
Reading Ensembl and miRBase.Still reading. A first read of a gene can take a while; this page waits up to 110 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.
Ready in a moment
12 / Long non-coding RNAs
Long non-coding RNAs at the NDUFA3 locus
Reading Ensembl.Still reading. A first read of a gene can take a while; this page waits up to 110 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.
Ready in a moment
13 / Literature
Papers that mention NDUFA3
Reading Europe PMC.Still reading. A first read of a gene can take a while; this page waits up to 55 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.
Ready in a moment
14 / Silencing this gene
From NDUFA3 to a sequence that silences it
The AUMsilence™ platform designs the sequences against the human transcripts on this page. Six decisions are yours before it does. What is written under each is AUM's guidance; the timings and the concentrations are in the usage guide below.
01
Choose the region
A knockdown oligonucleotide can sit in the 5' untranslated region, the coding sequence or the 3' untranslated region, and all three are used. The coding sequence and the 3' untranslated region are the usual first choices for an RNase H design; the 5' end near the start codon suits a steric block. The map above shows where each region sits on the isoforms it draws.
02
Cover the isoforms you mean
An exon every isoform carries silences the whole gene; an exon only some isoforms carry silences those and spares the rest. Decide which you want before a sequence is chosen, and check the reference transcript (MANE Select in human; RefSeq Select and Ensembl canonical in mouse and rat) is the one your cells express.
03
Think across species early
The orthologs panel says whether mouse and rat carry the same gene. Whether one oligonucleotide can serve two species is a sequence question, settled at design by matching the candidate against each transcript, not by the protein identity shown there.
04
Check expression in your model
A transcript that is not expressed in your cells cannot show knockdown. Confirm the gene is expressed in the cell type and condition you will use, from your own data or a reference atlas, before the order. The expression panel above gives GTEx's median per tissue for a human gene; for mouse and rat it says that no atlas is on this page yet.
05
Run the controls
A scramble control of the same chemistry, a positive control against a gene known to knock down in your cells, untreated cells, and a mock condition where a transfection reagent is used. Read knockdown at the RNA level first, then at the protein; the usage guide gives the timing and the concentrations to start from.
06
Pick the product
AUMsilence sdASO needs no transfection reagent and works in the cells that resist one. AUMsilence toASO is the transfection-optimised version of the same design, and AUMsiRNA™ is the siRNA route. The selection guide compares them.
For research use only. Not for use in diagnostic or therapeutic procedures.
Gene summary
Predicted to enable NADH dehydrogenase (ubiquinone) activity. Predicted to be involved in mitochondrial electron transport, NADH to ubiquinone and proton motive force-driven mitochondrial ATP synthesis. Located in mitochondrial inner membrane. Part of respiratory chain complex I.
Provided by Alliance of Genome Resources, Jul 2025, through NCBI Gene. NCBI disclaimer
Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone
NCBI Gene summary · NCBI Gene annotation RS_2025_08 · read · NCBI Gene 4696Data from NCBI, provided as is; NCBI's policies and disclaimers apply.
UniProtKB function · 2026_03 · read · UniProt O95167UniProt data are available under the Creative Commons Attribution 4.0 licence.
pLI 0.0005630 and LOEUF 1.48 in gnomAD v4 (GRCh38), on ENST00000485876.6.
gnomAD
54 GTEx tissues; the highest median in Brain - Nucleus accumbens (basal ganglia), 57.4 TPM.
GTEx
814 PubMed-indexed papers mention NDUFA3 at Europe PMC, newest first. Europe PMC ignores letter case, so the count also covers another species' symbol spelled with the same letters.
Europe PMC
No annotated microRNA lies within NDUFA3 in Ensembl release 116, on GRCh38.p14.
Ensembl · miRBase
No annotated long non-coding RNA overlaps NDUFA3 in Ensembl release 116, on GRCh38.p14.
Ensembl
2 curated, 0 inferred Reactome pathways for O95167 in human, v97.
Reactome
84 residues, reviewed O95167; 4 entries from the member databases this page shows along the chain; mean pLDDT 96.75; 7 PDB entries.
UniProt · InterPro · AlphaFold DB · PDBe
The 25 highest-scoring STRING partners at or above a combined score of 0.4, of up to 25 asked for; NDUFA13, NDUFB5, MT-ND3 lead.
STRING v12.0
9 RefSeq and 47 Ensembl transcripts on GRCh38.p14; MANE Select NM_004542.4.
NCBI Datasets · Ensembl
Placed on GRCh38.p14 (GCF_000001405.40). MANE Select marks the one transcript RefSeq and Ensembl agree is the reference for this gene.
RefSeq 9 transcripts
coding sequence, tall
untranslated region, thin
non-coding exon
intron, fixed width
Genomic strand: plus. Drawn 5' to 3', so exon 1 sits at the left here and at the lowest coordinate on the chromosome.
NM_004542.4NM_004542.4MANE Select
XM_054329683.1XM_054329683.1
Drawn 5' to 3' from each transcript's exons as placed on the reference assembly; exon 1 is the 5' exon on the transcript's own strand. Exon blocks are to scale with each other; introns are drawn at one fixed width whatever their length, so the map is not to scale along the chromosome. Numbers are exon ranks along the strand; a rank is omitted where the exon is too narrow to carry it.
A window on one transcript
One pixel of the map above stands for several bases, and a block too short to see is drawn wider than its own scale, so the map chooses a region and the sequence here chooses the window. Click an exon on a row of the map, or drag across a row; then set the exact start and end below.
These controls are ready in a moment.
No transcript is chosen.
Once a window is chosen this panel shows its length, its G and C count as a percentage of that length, the letters it is made of, the exons it falls in, whether it crosses a junction, and its antisense strand.
Not listed, because the source places them on another assembly only: XM_054321069.1 (not placed on GRCh38.p14).
NCBI Datasets, RefSeq transcripts · NCBI Datasets 18.38.0; GCF_000001405.40-RS_2025_08 · read · NCBI Gene 4696Data from NCBI, provided as is; NCBI's policies and disclaimers apply.
Ensembl 47 transcripts
A window on one transcript
One pixel of the map above stands for several bases, and a block too short to see is drawn wider than its own scale, so the map chooses a region and the sequence here chooses the window. Click an exon on a row of the map, or drag across a row; then set the exact start and end below.
These controls are ready in a moment.
No transcript is chosen.
Once a window is chosen this panel shows its length, its G and C count as a percentage of that length, the letters it is made of, the exons it falls in, whether it crosses a junction, and its antisense strand.
Lengths are spliced lengths, as each source states them. Exon ranks follow the strand: on a minus-strand gene exon 1 has the highest genomic coordinate. Reference assembly for human: GRCh38.
Drawn 5' to 3' from each transcript's exons as placed on the reference assembly; exon 1 is the 5' exon on the transcript's own strand. Exon blocks are to scale with each other; introns are drawn at one fixed width whatever their length, so the map is not to scale along the chromosome. Numbers are exon ranks along the strand; a rank is omitted where the exon is too narrow to carry it.
Rat: several candidates are named (Ndufa3-ps3, LOC103690298), each marked the best match. The orthologs panel below shows every vote.
Mouse Ndufa3 by 3 of 3 votes; rat: 5 candidates named (Ndufa3, LOC120103106, Ndufa3-ps1, Ndufa3-ps3, LOC103690298) and the votes differ. RGD is not answering, so the ortholog list could not be shown. Try again later. Reference b5ded66a-d2c.
Alliance · NCBI · Ensembl Compara
ClinVar: 50 records for NDUFA3, 18 pathogenic or likely pathogenic.
