Reading the record for IFNA21 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 IFNA21 opens with the record, which decides which product it carries. The order page itself is open now.
Cytogenetic band 9p21.3NCBI: 9:21,165,637-21,166,660 on the minus strand, GRCh38.p14 (GCF_000001405.40), sequence NC_000009.12, annotation GCF_000001405.40-RS_2025_08 of 2025-08-01Ensembl: 9:21,165,637-21,166,660 on the minus strand, GRCh38.p14 (GCA_000001405.29), release 116Coordinates are one-based with both ends included, as each source reports them.
HGNC lists more than one mouse id for this gene (MGI:107659, MGI:107661, MGI:107662, MGI:107663, MGI:107664, MGI:107666, MGI:107668, MGI:109210, MGI:1097683, MGI:2667155, MGI:2676324, MGI:3641425, MGI:3649260, MGI:3649418); MGI:107659 is used
Silence this gene
The order page opens with IFNA21 and human filled in. The sequences are designed against the transcripts below; the price is on that page.
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
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 IFNA21 is expressed
Ready in a moment
14 / Silencing this gene
From IFNA21 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.
The median is the middle sample of a tissue, so a gene expressed in a few cells of a mixed tissue reads low here and may still be the one your cell type needs. Nothing on this panel is adjusted or averaged across tissues; each figure is the source's own, and a tissue GTEx did not sample is absent from the chart.
04 / Protein
The protein IFNA21 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 IFNA21
Ready in a moment
06 / Pathways
Where IFNA21 acts, as Reactome curates it
Ready in a moment
07 / Disease associations
Diseases linked to IFNA21
Ready in a moment
08 / Variants
Classified variants of IFNA21
Ready in a moment
09 / Constraint
How much variation IFNA21 tolerates
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 IFNA21
Ready in a moment
12 / Long non-coding RNAs
Long non-coding RNAs at the IFNA21 locus
Ready in a moment
13 / Literature
Papers that mention IFNA21
Ready in a moment
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.
This gene is a member of the alpha interferon gene cluster on the short arm…
NCBI Gene summary
1 RefSeq and 1 Ensembl transcripts on GRCh38.p14; MANE Select NM_002175.2.
NCBI Datasets · Ensembl
54 GTEx tissues; the highest median in Brain - Cerebellum, 0.701 TPM.
GTEx
The 25 highest-scoring STRING partners at or above a combined score of 0.4, of up to 25 asked for; IFNAR1, IFNA14, IFNA4 lead.
STRING v12.0
6 curated, 0 inferred Reactome pathways for P01568 in human, v97.
Reactome
53 Open Targets disease associations; renal cell carcinoma first, at 0.37.
Open Targets
ClinVar: 131 records for IFNA21, 81 pathogenic or likely pathogenic.
ClinVar
pLI none and LOEUF none in gnomAD v4 (GRCh38), on ENST00000380225.1.
gnomAD
No annotated microRNA lies within IFNA21 in Ensembl release 116, on GRCh38.p14.
Ensembl · miRBase
No annotated long non-coding RNA overlaps IFNA21 in Ensembl release 116, on GRCh38.p14.
Ensembl
396 PubMed-indexed papers mention IFNA21 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
Gene summary
This gene is a member of the alpha interferon gene cluster on the short arm of chromosome 9. Interferons are cytokines produced in response to viral infection that mediate the immune response and interfere with viral replication. The encoded protein is a type I interferon and may play a specific role in the antiviral response to rubella virus.
Provided by RefSeq, Sep 2011, through NCBI Gene. NCBI disclaimer
Produced by macrophages, IFN-alpha have antiviral activities. Interferon stimulates the production of two enzymes: a protein kinase and an oligoadenylate synthetase
NCBI Gene summary · NCBI Gene annotation RS_2025_08 · read · NCBI Gene 3452Data from NCBI, provided as is; NCBI's policies and disclaimers apply.
UniProtKB function · 2026_03 · read · UniProt P01568UniProt data are available under the Creative Commons Attribution 4.0 licence.
Placed on GRCh38.p14 (GCF_000001405.40). MANE Select marks the one transcript RefSeq and Ensembl agree is the reference for this gene.
RefSeq 1 transcript
coding sequence, tall
untranslated region, thin
non-coding exon
intron, fixed width
Genomic strand: minus. Drawn 5' to 3', so exon 1 sits at the left here and at the highest coordinate on the chromosome.
NM_002175.2NM_002175.2MANE Select
scale
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.
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.
Mouse: several candidates are named (Ifna2, Ifna4, Ifna15, Ifna6, Ifna16, Ifna1, Ifna11, Ifna12, Ifna9, Ifna14, Ifna5, Ifnab, Ifna13, Ifna7), each marked the best match. The orthologs panel below shows every vote.
Rat: several candidates are named (Ifna4l1, Ifna5, Ifna4), each marked the best match. The orthologs panel below shows every vote.
Mouse: 14 candidates named (Ifna2, Ifna4, Ifna15, Ifna6, Ifna16, Ifna1, Ifna11, Ifna12, Ifna9, Ifna14, Ifna5, Ifnab, Ifna13, Ifna7) and the votes differ; rat: 20 candidates named (LOC120103159, LOC120103161, Ifna4l1, LOC120103158, Ifna12l, LOC120103162, Ifna5, LOC120103160, Ifna4, Ifna1, Ifna2, LOC100912356, LOC100912314, LOC134487075, Ifna16l1, LOC134487077, Ifna1l1, LOC134487076, LOC100909643, LOC120103164) and the votes differ. RGD is not answering, so the ortholog list could not be shown. Try again later. Reference 1bb1d094-0a3.
Alliance · NCBI · Ensembl Compara
189 residues, reviewed P01568; 8 entries from the member databases this page shows along the chain; mean pLDDT 85; no experimental structure at PDBe.
