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ABCB8
HPA
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  • ABCB8
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
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.

ABCB8
Synonyms EST328128, M-ABC1, MABC1, MITOSUR
Gene descriptioni

Full gene name according to HGNC.

ATP binding cassette subfamily B member 8
Protein classi

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

Transporters
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.

Membrane, 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 7
Cytoband q36.1
Chromosome location (bp) 151028422 - 151047782
Number of transcriptsi

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

8
Ensembl ENSG00000197150 (version 109)
Entrez gene 11194
HGNC HGNC:49
UniProt Q9NUT2 (UniProt - Evidence at protein level)
neXtProt NX_Q9NUT2
GeneCards ABCB8
Antibodypedia ABCB8 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

ATP-binding subunit of the mitochondrial ATP-gated potassium channel (mitoK(ATP)) 1. Together with pore-forming subunit CCDC51/MITOK of the mitoK(ATP) channel, mediates ATP-dependent potassium currents across the mitochondrial inner membrane 2. An increase in ATP intracellular levels closes the channel, inhibiting K(+) transport, whereas a decrease in ATP levels enhances K(+) uptake in the mitochondrial matrix 3. Plays a role in mitochondrial iron transport 4. Required for maintenance of normal cardiac function, possibly by influencing mitochondrial iron export and regulating the maturation of cytosolic iron sulfur cluster-containing enzymes (By similarity).... show less
Biological process (UniProt)i

Keywords assigned by UniProt to proteins because they are involved in a particular biological process.

Ion transport, Potassium transport, Transport
Ligand (UniProt)i

Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.

ATP-binding, Nucleotide-binding, Potassium
Gene summary (Entrez)i

Useful information about the gene from Entrez

This nuclear gene encodes a multi-pass membrane protein that is targeted to the mitochondrial inner membrane. The encoded protein is an ATP-dependent transporter that may mediate the passage of organic and inorganic molecules out of the mitochondria. Loss of function of the related gene in mouse results in a disruption of iron homeostasis between the mitochondria and cytosol. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2013]... show less
PROTEIN INFORMATIONi

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

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

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 length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
ABCB8-201
ENSP00000297504
ENST00000297504
Q9NUT2
[Direct mapping] Mitochondrial potassium channel ATP-binding subunit
Show all
Transporters
   Primary Active Transporters
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   7TM proteins predicted by MDM
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0000166 [nucleotide binding]
GO:0005515 [protein binding]
GO:0005524 [ATP binding]
GO:0005654 [nucleoplasm]
GO:0005730 [nucleolus]
GO:0005739 [mitochondrion]
GO:0005743 [mitochondrial inner membrane]
GO:0006811 [ion transport]
GO:0006813 [potassium ion transport]
GO:0006884 [cell volume homeostasis]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0016887 [ATP hydrolysis activity]
GO:0031966 [mitochondrial membrane]
GO:0042626 [ATPase-coupled transmembrane transporter activity]
GO:0043190 [ATP-binding cassette (ABC) transporter complex]
GO:0055085 [transmembrane transport]
GO:0062157 [mitochondrial ATP-gated potassium channel complex]
GO:0071805 [potassium ion transmembrane transport]
GO:0140141 [mitochondrial potassium ion transmembrane transport]
GO:0140359 [ABC-type transporter activity]
Show all
735 aa
80 kDa
No 7
ABCB8-202
ENSP00000351717
ENST00000358849
Q9NUT2
[Direct mapping] Mitochondrial potassium channel ATP-binding subunit
Show all
Transporters
   Primary Active Transporters
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   7TM proteins predicted by MDM
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0000166 [nucleotide binding]
GO:0005515 [protein binding]
GO:0005524 [ATP binding]
GO:0005654 [nucleoplasm]
GO:0005730 [nucleolus]
GO:0005739 [mitochondrion]
GO:0005743 [mitochondrial inner membrane]
GO:0006811 [ion transport]
GO:0006813 [potassium ion transport]
GO:0006884 [cell volume homeostasis]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0016887 [ATP hydrolysis activity]
GO:0031966 [mitochondrial membrane]
GO:0042626 [ATPase-coupled transmembrane transporter activity]
GO:0043190 [ATP-binding cassette (ABC) transporter complex]
GO:0055085 [transmembrane transport]
GO:0062157 [mitochondrial ATP-gated potassium channel complex]
GO:0071805 [potassium ion transmembrane transport]
GO:0140141 [mitochondrial potassium ion transmembrane transport]
GO:0140359 [ABC-type transporter activity]
Show all
718 aa
78.1 kDa
No 7
ABCB8-203
ENSP00000417563
ENST00000461373
C9JA03
[Direct mapping] Mitochondrial potassium channel ATP-binding subunit
Show all
   SPOCTOPUS predicted membrane proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
148 aa
16.3 kDa
No 0
ABCB8-211
ENSP00000419558
ENST00000477092
C9JTY4
[Direct mapping] ATP-binding cassette, sub-family B (MDR/TAP), member 8, isoform CRA_c; Mitochondrial potassium channel ATP-binding subunit
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   5TM proteins predicted by MDM
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0005524 [ATP binding]
GO:0005654 [nucleoplasm]
GO:0005730 [nucleolus]
GO:0005739 [mitochondrion]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0055085 [transmembrane transport]
GO:0140359 [ABC-type transporter activity]
Show all
431 aa
47.1 kDa
No 5
ABCB8-212
ENSP00000419891
ENST00000477719
C9JYI3
[Direct mapping] Mitochondrial potassium channel ATP-binding subunit
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   5TM proteins predicted by MDM
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0005524 [ATP binding]
GO:0005654 [nucleoplasm]
GO:0005730 [nucleolus]
GO:0005739 [mitochondrion]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0055085 [transmembrane transport]
GO:0140359 [ABC-type transporter activity]
Show all
409 aa
44.7 kDa
No 5
ABCB8-219
ENSP00000420162
ENST00000491920
H7C5K9
[Direct mapping] Mitochondrial potassium channel ATP-binding subunit
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT-SVM predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   1TM proteins predicted by MDM
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0005524 [ATP binding]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0055085 [transmembrane transport]
GO:0140359 [ABC-type transporter activity]
Show all
140 aa
14.9 kDa
No 1
ABCB8-221
ENSP00000418271
ENST00000498578
Q9NUT2
[Direct mapping] Mitochondrial potassium channel ATP-binding subunit
Show all
Transporters
   Primary Active Transporters
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   6TM proteins predicted by MDM
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0000166 [nucleotide binding]
GO:0005515 [protein binding]
GO:0005524 [ATP binding]
GO:0005654 [nucleoplasm]
GO:0005730 [nucleolus]
GO:0005739 [mitochondrion]
GO:0005743 [mitochondrial inner membrane]
GO:0006811 [ion transport]
GO:0006813 [potassium ion transport]
GO:0006884 [cell volume homeostasis]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0016887 [ATP hydrolysis activity]
GO:0031966 [mitochondrial membrane]
GO:0042626 [ATPase-coupled transmembrane transporter activity]
GO:0043190 [ATP-binding cassette (ABC) transporter complex]
GO:0055085 [transmembrane transport]
GO:0062157 [mitochondrial ATP-gated potassium channel complex]
GO:0071805 [potassium ion transmembrane transport]
GO:0140141 [mitochondrial potassium ion transmembrane transport]
GO:0140359 [ABC-type transporter activity]
Show all
693 aa
75.3 kDa
No 6
ABCB8-222
ENSP00000438776
ENST00000542328
Q9NUT2
[Direct mapping] Mitochondrial potassium channel ATP-binding subunit
Show all
Transporters
   Primary Active Transporters
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   7TM proteins predicted by MDM
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0000166 [nucleotide binding]
GO:0005515 [protein binding]
GO:0005524 [ATP binding]
GO:0005654 [nucleoplasm]
GO:0005730 [nucleolus]
GO:0005739 [mitochondrion]
GO:0005743 [mitochondrial inner membrane]
GO:0006811 [ion transport]
GO:0006813 [potassium ion transport]
GO:0006884 [cell volume homeostasis]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0016887 [ATP hydrolysis activity]
GO:0031966 [mitochondrial membrane]
GO:0042626 [ATPase-coupled transmembrane transporter activity]
GO:0043190 [ATP-binding cassette (ABC) transporter complex]
GO:0055085 [transmembrane transport]
GO:0062157 [mitochondrial ATP-gated potassium channel complex]
GO:0071805 [potassium ion transmembrane transport]
GO:0140141 [mitochondrial potassium ion transmembrane transport]
GO:0140359 [ABC-type transporter activity]
Show all
630 aa
68.1 kDa
No 7

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