BH3 interacting-domain death agonist

Last updated
BID
BID protein 2bid.png
Available structures
PDB Ortholog search: PDBe RCSB
Identifiers
Aliases BID , Bid, 2700049M22Rik, AI875481, AU022477, FP497, BH3 interacting domain death agonist
External IDs OMIM: 601997; MGI: 108093; HomoloGene: 923; GeneCards: BID; OMA:BID - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_007544

RefSeq (protein)

NP_031570

Location (UCSC) Chr 22: 17.73 – 17.77 Mb Chr 6: 120.87 – 120.89 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse
BID
PDB 2bid EBI.jpg
human pro-apoptotic protein bid
Identifiers
SymbolBID
Pfam PF06393
InterPro IPR010479
SCOP2 1ddb / SCOPe / SUPFAM
TCDB 1.A.21
OPM superfamily 40
OPM protein 2m5i
Available protein structures:
Pfam   structures / ECOD  
PDB RCSB PDB; PDBe; PDBj
PDBsum structure summary

The BH3 interacting-domain death agonist, or BID, gene is a pro-apoptotic member of the Bcl-2 protein family. [5] Bcl-2 family members share one or more of the four characteristic domains of homology entitled the Bcl-2 homology (BH) domains (named BH1, BH2, BH3 and BH4), and can form hetero- or homodimers. Bcl-2 proteins act as anti- or pro-apoptotic regulators that are involved in a wide variety of cellular activities.

Interactions

BID is a pro-apoptotic Bcl-2 protein containing only the BH3 domain. In response to apoptotic signaling, BID interacts with another Bcl-2 family protein, Bax, leading to the insertion of Bax into organelle membranes, primarily the outer mitochondrial membrane. Bax is believed to interact with, and induce the opening of the mitochondrial voltage-dependent anion channel, VDAC. Alternatively, growing evidence suggest that activated Bax and/or Bak form an oligomeric pore, MAC in the outer membrane. This results in the release of cytochrome c and other pro-apoptotic factors (such as SMAC/DIABLO) [6] from the mitochondria, often referred to as mitochondrial outer membrane permeabilization, leading to activation of caspases. This defines BID as a direct activator of Bax, a role common to some of the pro-apoptotic Bcl-2 proteins containing only the BH3 domain.[ citation needed ]

The anti-apoptotic Bcl-2 proteins, including Bcl-2 itself, can bind BID and inhibit BID's ability to activate Bax. As a result, the anti-apoptotic Bcl-2 proteins may inhibit apoptosis by sequestering BID, leading to reduced Bax activation.[ citation needed ]

The expression of BID is upregulated by the tumor suppressor p53, and BID has been shown to be involved in p53-mediated apoptosis. [7] The p53 protein is a transcription factor that, when activated as part of the cell's response to stress, regulates many downstream target genes, including BID. However, p53 also has a transcription-independent role in apoptosis. In particular, p53 interacts with Bax, promoting Bax activation and the insertion of Bax into the mitochondrial membrane.[ citation needed ]

The BH3 interacting-domain death agonist has been shown to interact with:

Cleavage

Caspase-8 (as surface) cleavage of Bid (as ribbon) (visualization by Kosi Gramatikoff) Casp8-BID.gif
Caspase-8 (as surface) cleavage of Bid (as ribbon) (visualization by Kosi Gramatikoff)

Several reports have demonstrated that caspase-8, and its substrate BID, are frequently activated in response to certain apoptotic stimuli in a death receptor-independent manner. N-hydroxy-L-arginine (NOHA), a stable intermediate product formed during the conversion of L-arginine to nitric oxide activates caspase-8. [16] Activation of caspase-8, and subsequent BID cleavage participate in cytochrome-c mediated apoptosis. [17] 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) mediated activation of caspase-9 via cytochrome-c release has been shown to result in the activation of caspase-8 and Bid cleavage. [18] Aspirin and Curcumin (diferuloylmethane) too activate caspase-8 to cleave and translocate Bid, induced a conformational change in and translocation of Bax and cytochrome-c release. [19] [20]

See also

Related Research Articles

<span class="mw-page-title-main">Apoptosis</span> Type of programmed cell death in multicellular organisms

Apoptosis is a form of programmed cell death that occurs in multicellular organisms and in some eukaryotic, single-celled microorganisms such as yeast. Biochemical events lead to characteristic cell changes (morphology) and death. These changes include blebbing, cell shrinkage, nuclear fragmentation, chromatin condensation, DNA fragmentation, and mRNA decay. The average adult human loses 50 to 70 billion cells each day due to apoptosis. For the average human child between 8 and 14 years old, each day the approximate loss is 20 to 30 billion cells.

<span class="mw-page-title-main">Bcl-2</span> Protein found in humans

Bcl-2, encoded in humans by the BCL2 gene, is the founding member of the Bcl-2 family of regulator proteins. BCL2 blocks programmed cell death (apoptosis) while other BCL2 family members can either inhibit or induce it. It was the first apoptosis regulator identified in any organism.

<span class="mw-page-title-main">Apoptosome</span> A protein complex involved in the cellular apoptotic process.

The apoptosome is a large quaternary protein structure formed in the process of apoptosis. Its formation is triggered by the release of cytochrome c from the mitochondria in response to an internal (intrinsic) or external (extrinsic) cell death stimulus. Stimuli can vary from DNA damage and viral infection to developmental cues such as those leading to the degradation of a tadpole's tail.

<span class="mw-page-title-main">Apoptosis regulator BAX</span> Mammalian protein found in Homo sapiens

Apoptosis regulator BAX, also known as bcl-2-like protein 4, is a protein that in humans is encoded by the BAX gene. BAX is a member of the Bcl-2 gene family. BCL2 family members form hetero- or homodimers and act as anti- or pro-apoptotic regulators that are involved in a wide variety of cellular activities. This protein forms a heterodimer with BCL2, and functions as an apoptotic activator. This protein is reported to interact with, and increase the opening of, the mitochondrial voltage-dependent anion channel (VDAC), which leads to the loss in membrane potential and the release of cytochrome c. The expression of this gene is regulated by the tumor suppressor P53 and has been shown to be involved in P53-mediated apoptosis.

p53 upregulated modulator of apoptosis Protein-coding gene in the species Homo sapiens

The p53 upregulated modulator of apoptosis (PUMA) also known as Bcl-2-binding component 3 (BBC3), is a pro-apoptotic protein, member of the Bcl-2 protein family. In humans, the Bcl-2-binding component 3 protein is encoded by the BBC3 gene. The expression of PUMA is regulated by the tumor suppressor p53. PUMA is involved in p53-dependent and -independent apoptosis induced by a variety of signals, and is regulated by transcription factors, not by post-translational modifications. After activation, PUMA interacts with antiapoptotic Bcl-2 family members, thus freeing Bax and/or Bak which are then able to signal apoptosis to the mitochondria. Following mitochondrial dysfunction, the caspase cascade is activated ultimately leading to cell death.

<span class="mw-page-title-main">Phorbol-12-myristate-13-acetate-induced protein 1</span> Protein-coding gene in the species Homo sapiens

Phorbol-12-myristate-13-acetate-induced protein 1 is a protein that in humans is encoded by the PMAIP1 gene, and is also known as Noxa.

<span class="mw-page-title-main">Bcl-2 homologous antagonist killer</span> Protein-coding gene in the species Homo sapiens

Bcl-2 homologous antagonist/killer is a protein which in humans is encoded by the BAK1 gene on chromosome 6. It belongs to the BCL2 protein family. BCL2 family members form oligomers or heterodimers and act as anti- or pro-apoptotic regulators that are involved in a wide variety of cellular activities. This protein localizes to mitochondria, and functions to induce apoptosis. It interacts with and accelerates the opening of the mitochondrial voltage-dependent anion channel, which leads to a loss in membrane potential and the release of cytochrome c. This protein also interacts with the tumor suppressor P53 after exposure to cell stress.

<span class="mw-page-title-main">Bcl-2-associated death promoter</span> Mammalian protein found in Homo sapiens

The BCL2 associated agonist of cell death (BAD) protein is a pro-apoptotic member of the Bcl-2 gene family which is involved in initiating apoptosis. BAD is a member of the BH3-only family, a subfamily of the Bcl-2 family. It does not contain a C-terminal transmembrane domain for outer mitochondrial membrane and nuclear envelope targeting, unlike most other members of the Bcl-2 family. After activation, it is able to form a heterodimer with anti-apoptotic proteins and prevent them from stopping apoptosis.

<span class="mw-page-title-main">Bcl-xL</span> Transmembrane molecule in the mitochondria

B-cell lymphoma-extra large (Bcl-xL), encoded by the BCL2-like 1 gene, is a transmembrane molecule in the mitochondria. It is a member of the Bcl-2 family of proteins, and acts as an anti-apoptotic protein by preventing the release of mitochondrial contents such as cytochrome c, which leads to caspase activation and ultimately, programmed cell death.

<span class="mw-page-title-main">Caspase 8</span> Protein found in humans

Caspase-8 is a caspase protein, encoded by the CASP8 gene. It most likely acts upon caspase-3. CASP8 orthologs have been identified in numerous mammals for which complete genome data are available. These unique orthologs are also present in birds.

Inhibitors of apoptosis are a group of proteins that mainly act on the intrinsic pathway that block programmed cell death, which can frequently lead to cancer or other effects for the cell if mutated or improperly regulated. Many of these inhibitors act to block caspases, a family of cysteine proteases that play an integral role in apoptosis. Some of these inhibitors include the Bcl-2 family, viral inhibitor crmA, and IAP's.

<span class="mw-page-title-main">Bcl-2-like protein 1</span> Protein-coding gene in the species Homo sapiens

Bcl-2-like protein 1 is a protein encoded in humans by the BCL2L1 gene. Through alternative splicing, the gene encodes both of the human proteins Bcl-xL and Bcl-xS.

<span class="mw-page-title-main">Diablo homolog</span> Protein-coding gene in the species Homo sapiens

Diablo homolog (DIABLO) is a mitochondrial protein that in humans is encoded by the DIABLO gene on chromosome 12. DIABLO is also referred to as second mitochondria-derived activator of caspases or SMAC. This protein binds inhibitor of apoptosis proteins (IAPs), thus freeing caspases to activate apoptosis. Due to its proapoptotic function, SMAC is implicated in a broad spectrum of tumors, and small molecule SMAC mimetics have been developed to enhance current cancer treatments.

<span class="mw-page-title-main">BCL2-related protein A1</span> Protein-coding gene in the species Homo sapiens

Bcl-2-related protein A1 is a protein in humans which is encoded by the BCL2A1 gene.

<span class="mw-page-title-main">Bcl-2-interacting killer</span> Protein-coding gene in the species Homo sapiens

Bcl-2-interacting killer is a protein that in humans is encoded by the BIK gene.

<span class="mw-page-title-main">HRK (gene)</span>

Activator of apoptosis harakiri is a protein that in humans is encoded by the HRK gene.

<span class="mw-page-title-main">Mitochondrial apoptosis-induced channel</span>

The mitochondrial apoptosis-induced channel, is an early marker of the onset of apoptosis. This ion channel is formed on the outer mitochondrial membrane in response to certain apoptotic stimuli. MAC activity is detected by patch clamping mitochondria from apoptotic cells at the time of cytochrome c release.

<span class="mw-page-title-main">BOK (gene)</span> Protein-coding gene in the species Homo sapiens

Bok is a protein-coding gene of the Bcl-2 family that is found in many invertebrates and vertebrates. It induces apoptosis, a special type of cell death. Currently, the precise function of Bok in this process is unknown.

<span class="mw-page-title-main">BCL2L10</span> Protein-coding gene in the species Homo sapiens

Bcl-2-like protein 10 is a protein that in humans is encoded by the BCL2L10 gene.

<span class="mw-page-title-main">Bcl-2 family</span>

The Bcl-2 family consists of a number of evolutionarily-conserved proteins that share Bcl-2 homology (BH) domains. The Bcl-2 family is most notable for their regulation of apoptosis, a form of programmed cell death, at the mitochondrion. The Bcl-2 family proteins consists of members that either promote or inhibit apoptosis, and control apoptosis by governing mitochondrial outer membrane permeabilization (MOMP), which is a key step in the intrinsic pathway of apoptosis. A total of 25 genes in the Bcl-2 family were identified by 2008.

References

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  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
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