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Table 1 Description of common abbreviations used in apoptosis and signal transduction

From: Estrogen regulation of apoptosis: how can one hormone stimulate and inhibit?

Abbreviation

Meaning

Synonyms

Bad

Bcl-2/Bcl-X L -associated death domain protein

BH3-only member of the Bcl-2 family

Bak

Bcl-2 homologous antagonist-killer protein

Multi-BH domain pro-apoptosis protein

Bax

Bcl-2-associated X protein

Multi-BH domain pro-apoptosis protein

Bcl-2

B-cell lymphoma-2

Defining member of the family; originally characterized as an oncogene

Bcl-X L

Bcl-2-related gene, long form

Bcl-XS is a shorter splice variant that is pro-apoptotic

Bim

Bcl-2-interacting mediator of cell death

BH3-only member of the Bcl-2 family

IκB

Inhibitor of NF-κB

Interacts with NF-κB

IKK

IκB kinase

Phosphorylates IκB to promote its degradation

MDM2

Murine double minute

Negative regulator of the p53 tumor suppressor

NF-κB

Nuclear factor-kappa type B

Originally linked with enhancement of immunoglobulin kappa light-chain gene

p53

53 kDa protein

Tumor-suppressor protein

PDK-1

3-phosphoinositide-dependent protein kinase 1

Master kinase that is crucial for the activation of Akt/PKB

PI3K

Phosphoinositide 3-kinase

Phosphatidylinositol 3-kinase; PI 3-kinase; PtdIns3K

PKB

Protein kinase B

Akt; RACK (related to A and C kinase); has PH domain

PMAIP-1/Noxa

Phorbol-12-myristate-13-acetate-induced protein 1

BH3-only member of the Bcl-2 family and candidate mediator of p53-induced apoptosis

PUMA

p53-upregulated modulator of apoptosis

BH3-only member of the Bcl-2 family

  1. BH, Bcl-2 (B-cell lymphoma-2) homology.