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IST1
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  • IST1
PROTEIN STRUCTURE
ANTIBODIES
AND
VALIDATION
Protein structures
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

IST1
Synonyms CHMP8, KIAA0174
Gene descriptioni

Full gene name according to HGNC.

IST1 factor associated with ESCRT-III
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Plasma proteins
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Intracellular
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 16
Cytoband q22.2
Chromosome location (bp) 71845996 - 71931199
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

18
Ensembl ENSG00000182149 (version 109)
Entrez gene 9798
HGNC HGNC:28977
UniProt P53990 (UniProt - Evidence at protein level)
neXtProt NX_P53990
GeneCards IST1
PROTEIN BROWSERi

The Structure section provides predicted structures from the Alphafold protein structure database and includes structures corresponding to uniprot entries mapped to our gene set with at least one splice variant having 100% identity to the structure sequence.

Displaying protein features on the AlphaFold structures

Individual splice variants can be selected in the top part of the Protein Browser (see below) and both for transcripts matching the whole structure and those corresponding only to a part the full-length AlphaFold structure is shown. Different transcript-related features such as transmembrane regions, InterPro domains and antigen sequences for antibodies can be displayed in the structure by clicking on the respective features in the Protein Browser and then also the part of the structure corresponding to the selected transcript will be shown in lightblue. Clinical and population amino acid variants can be highlighted by using the sliders to the right of the structure, which can also be used to colour the entire structure by residue index or make the structure autorotate.The structures are displayed using the NGL Viewer and can also be zoomed-in and rotated manually.

The Protein Browser

The protein browser displays the antigen location on the target protein(s) and the features of the target protein. The tabs at the top of the protein view section can be used to switch between the different splice variants to which an antigen has been mapped.

At the top of the view, the position of the antigen (identified by the corresponding HPA identifier) is shown as a green bar. A yellow triangle on the bar indicates a <100% sequence identity to the protein target.

Below the antigens, the maximum percent sequence identity of the protein to all other proteins from other human genes is displayed, using a sliding window of 10 aa residues (HsID 10) or 50 aa residues (HsID 50). The region with the lowest possible identity is always selected for antigen design, with a maximum identity of 60% allowed for designing a single-target antigen (read more).

The curve in blue displays the predicted antigenicity i.e. the tendency for different regions of the protein to generate an immune response, with peak regions being predicted to be more antigenic.The curve shows average values based on a sliding window approach using an in-house propensity scale. (read more).

If a signal peptide is predicted by a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius (turquoise) and/or transmembrane regions (orange) are predicted by MDM, these are displayed.

Low complexity regions are shown in yellow and InterPro regions in green. Common (purple) and unique (grey) regions between different splice variants of the gene are also displayed (read more), and at the bottom of the protein view is the protein scale.
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IST1-201
IST1-202
IST1-203
IST1-204
IST1-206
IST1-207
IST1-208
IST1-211
IST1-212
IST1-215
IST1-216
IST1-217
IST1-219
IST1-220
IST1-221
IST1-225
IST1-226
IST1-227
»

Description:
Structure prediction of P53990 from Alphafold project, version 2

Color scheme:
Confidence
Residue index
Your selection
Variants:
Off
Clinical
Population
Autorotate:
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On
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The ENSP identifier links to the Ensembl website protein summary, while the ENST identifier links to the Ensembl website transcript summary for the selected splice variant. The data in the UniProt column can be expanded to show links to all matching UniProt identifiers for this protein.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The Gene Ontology terms assigned to this protein are listed if expanding the Gene ontology column. The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide (according to a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius) and the number of predicted transmembrane region(s) (according to MDM) are also reported.
Splice variant SwissProt TrEMBL Protein class Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
IST1-201
P53990
Show all
Predicted intracellular proteins
Plasma proteins
Mapped to neXtProt
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
360 aa
39.9 kDa
No 0
IST1-202
P53990
Show all
Predicted intracellular proteins
Plasma proteins
Mapped to neXtProt
Protein evidence (Ezkurdia et al 2014)
Show all
335 aa
36.6 kDa
No 0
IST1-203
P53990
Show all
Predicted intracellular proteins
Plasma proteins
Mapped to neXtProt
Protein evidence (Ezkurdia et al 2014)
Show all
366 aa
40 kDa
No 0
IST1-204
F5GXM3
Show all
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
141 aa
16.1 kDa
No 0
IST1-206
J3KR23
Show all
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
289 aa
31.2 kDa
No 0
IST1-207
H3BMU1
Show all
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
206 aa
23.4 kDa
No 0
IST1-208
P53990
Show all
Predicted intracellular proteins
Plasma proteins
Mapped to neXtProt
Protein evidence (Ezkurdia et al 2014)
Show all
379 aa
41.6 kDa
No 0
IST1-211
H3BUI0
Show all
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
253 aa
27.9 kDa
No 0
IST1-212
H3BQ38
Show all
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
40 aa
4.7 kDa
No 0
IST1-215
P53990
Show all
Predicted intracellular proteins
Plasma proteins
Mapped to neXtProt
Protein evidence (Ezkurdia et al 2014)
Show all
218 aa
23.1 kDa
No 0
IST1-216
H3BQF7
Show all
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
166 aa
19 kDa
No 0
IST1-217
H3BPP6
Show all
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
59 aa
6.9 kDa
No 0
IST1-219
P53990
Show all
Predicted intracellular proteins
Plasma proteins
Mapped to neXtProt
Protein evidence (Ezkurdia et al 2014)
Show all
366 aa
40 kDa
No 0
IST1-220
H3BUI0
Show all
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
253 aa
27.9 kDa
No 0
IST1-221
P53990
Show all
Predicted intracellular proteins
Plasma proteins
Mapped to neXtProt
Protein evidence (Ezkurdia et al 2014)
Show all
366 aa
40 kDa
No 0
IST1-225
H3BRE2
Show all
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
105 aa
12.1 kDa
No 0
IST1-226
P53990
Show all
Predicted intracellular proteins
Plasma proteins
Mapped to neXtProt
Protein evidence (Ezkurdia et al 2014)
Show all
218 aa
23.1 kDa
No 0
IST1-227
E9PF00
Show all
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Show all
41 aa
4.8 kDa
No 0

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