| 1986 |
BPGM was cloned from human reticulocyte mRNA and shown to encode a 258-residue multifunctional enzyme controlling 2,3-bisphosphoglycerate (2,3-BPG) metabolism; cell-free translation confirmed the protein is synthesized at its mature molecular weight with tissue-specific expression (erythroid cells only), and the revised amino acid sequence was established by tryptic peptide analysis. |
cDNA cloning, expression vector (lambda gt11), cell-free translation, immunoprecipitation, HPLC tryptic peptide sequencing, Northern blot |
The EMBO journal |
High |
3023066
|
| 1984 |
Cell-free translation of reticulocyte mRNA produced BPGM at its mature molecular weight (no precursor form), and BPGM mRNA represents ~0.1% of non-heme protein synthesis in reticulocytes but only ~0.01% in fetal liver; no BPGM synthesis was detected from non-erythroid tissue mRNA. |
Cell-free reticulocyte lysate translation, immunoprecipitation, PAGE, sucrose gradient sedimentation (12S mRNA) |
Biochemical and biophysical research communications |
Medium |
6145409
|
| 1987 |
The human BPGM gene was mapped by in situ hybridization to chromosome 7, region 7q34–7q22. |
In situ hybridization with 1.1-kb cDNA clone to metaphase chromosomes |
Human genetics |
Medium |
2824335
|
| 1990 |
Site-directed mutagenesis of BPGM demonstrated that Arg89 is essential for enzymatic function: Arg89→Cys, Arg89→Gly, and Arg89→Ser substitutions all reproduced the loss of activity seen in the natural BPGM Créteil I deficiency mutation. C-terminal residues 252–256 were also found important for function. |
Site-directed mutagenesis, expression in bacterial vector, activity assays |
Biomedica biochimica acta |
Medium |
2167078
|
| 1992 |
Complete BPGM deficiency in a human patient resulted from compound heterozygosity: one allele carried a missense mutation (89 Arg→Cys, BPGM Créteil I) producing an inactive but immunologically detectable enzyme, and the other carried a frameshift (deletion of C205 or C206, BPGM Créteil II). This established that the Arg89→Cys mutation generates a catalytically inactive yet antigenically intact protein. |
PCR, allele-specific oligonucleotide hybridization, DNA sequencing, RT-PCR of erythrocyte mRNA |
Blood |
High |
1421379
|
| 1992 |
A 3D structural model of human BPGM was built using the yeast monophosphoglycerate mutase (MPGM) crystal structure as framework. The model identified a cluster of positively charged residues (especially arginines) at the active site entrance proposed as a secondary binding site for polyanionic substrates; Cys20 was positioned as the residue responsible for sulfhydryl-reagent inactivation; dimerization and possible tetramerization interfaces were identified by analogy. |
Comparative structural modeling based on yeast MPGM crystal structure, energy minimization |
Biochimie |
Low |
1387804
|
| 1994 |
Site-directed mutagenesis of the active-site residue Gly13 in human BPGM revealed its role in controlling the balance of catalytic activities: Gly13→Ser did not alter synthase activity but doubled mutase and halved phosphatase activities; Gly13→Arg enhanced phosphatase activity 28.6-fold while reducing synthase and mutase activities ~10-fold; Gly13→Lys gave a 6.5-fold phosphatase increase with similar synthase/mutase reduction. These results established Gly13 as critical for directing phosphoryl transfer to water (phosphatase) versus carbohydrate substrates. |
Site-directed mutagenesis, recombinant protein expression, enzymatic activity assays (synthase, mutase, phosphatase) |
Proceedings of the National Academy of Sciences of the United States of America |
High |
8170953
|
| 1997 |
Site-directed mutagenesis of BPGM active-site residues showed that Cys22 is specifically required for 2-phosphoglycolate (the physiological phosphatase activator) binding: Cys22→Thr and Cys22→Ser mutations greatly reduced 2-phosphoglycolate-stimulated phosphatase activity and Ka without affecting synthase/mutase activities or Km for 2,3-DPG and 3-PG. Ser23 was shown to be necessary for binding both 3-PG and 2-phosphoglycolate. Arg89 was confirmed to be specifically involved in monophosphoglycerates binding but not in 2-phosphoglycolate binding. CD spectroscopy showed 2,3-DPG induces protein structural changes consistent with phosphorylation of the enzyme. |
Site-directed mutagenesis, kinetic assays (Ka, Km), CD spectroscopy |
The Journal of biological chemistry |
High |
9162026
|
| 1998 |
BPGM is inactivated by glycation in vivo in diabetic patients. The enzyme purified from diabetic erythrocytes via boronate affinity chromatography showed the glycated fraction was completely inactive. The primary in vivo glycation site was identified as Lys158; in vitro glycation also occurred at Lys2, Lys4, Lys17, Lys42, and Lys196. Loss of activity appeared attributable to glycation at Lys158, located near the substrate binding site. |
Boronate affinity chromatography, enzyme activity assay, reverse-phase HPLC of lysyl-endopeptidase digests, amino acid sequencing, anti-hexitollysine IgG immunoreactivity, in vitro glycation of recombinant BPGM |
Journal of biochemistry |
High |
9832630
|
| 2004 |
Erythrocytosis in a patient of Iranian Jewish heritage was caused by near-complete deficiency of BPGM enzyme activity (0.16 IU/g Hb vs. normal 4.13–5.43 IU/g Hb) due to homozygosity for the 185G→A (Arg62Gln) missense mutation in exon 2, resulting in markedly decreased 2,3-BPG (0.3 µmol/g Hb vs. normal 11.4–19.4), left-shifted oxygen dissociation curve (p50 = 19 mmHg), and secondary erythrocytosis. |
BPGM enzyme activity assay, 2,3-BPG measurement, DNA sequencing of BPGM exon 2, p50 measurement, family study |
American journal of hematology |
High |
15054810
|
| 2005 |
BPGM is expressed and enzymatically active in the syncytiotrophoblast layer of human placenta (a non-erythroid tissue), where it synthesizes 2,3-BPG at the feto-maternal interface. This was unexpected as BPGM was previously considered erythroid-specific. |
Western blot, immunohistochemistry, in situ hybridization, cytochemical activity staining of placental extracts |
Placenta |
High |
16246416
|
| 2008 |
The enzyme MIPP1 (multiple inositol polyphosphate phosphatase) was identified as an additional 2,3-BPG phosphatase in erythrocytes that removes the 3-phosphate from 2,3-BPG (distinct from BPGM which removes the 2-phosphate), thereby expanding the regulatory capacity of the Rapoport-Luebering shunt beyond BPGM alone. MIPP1 activity in erythrocytes was estimated to match BPGM phosphatase activity, and MIPP1 is active at 4°C (relevant to blood storage). Genetic manipulation of Mipp1 in Dictyostelium confirmed physiological regulation of 2,3-BPG. |
Biochemical phosphatase assay, genetic manipulation of Mipp1 in Dictyostelium, erythrocyte 2,3-BPG measurement, pH-dependent activity studies |
Proceedings of the National Academy of Sciences of the United States of America |
High |
18413611
|
| 2014 |
QM/MM simulation of human BPGM revealed the reaction mechanisms of both phosphatase and synthase activities, including the free energy profiles and key active-site residues. The calculations predicted that synthase activity has a much lower energy barrier than phosphatase activity, consistent with experimental activity measurements. |
Quantum mechanics/molecular mechanics (QM/MM) simulation, metadynamics, umbrella sampling |
Physical chemistry chemical physics : PCCP |
Low |
24441588
|
| 2017 |
BPGM controls the flux through the serine biosynthesis pathway via its product 2,3-BPG. 2,3-BPG is the primary histidine-phosphate donor that activates PGAM1 (phosphoglycerate mutase 1). When BPGM is knocked out, 1,3-BPG can directly phosphorylate PGAM1, but PGAM1 activity is reduced, causing 3-phosphoglycerate to accumulate and serine biosynthesis to increase. Thus BPGM normally limits 3-PG availability and serine synthesis flux. |
BPGM knockout cell lines, isotope tracing metabolomics, PGAM1 phosphorylation assays, growth rate measurements |
Nature chemical biology |
High |
28805803
|
| 2020 |
In erythrocytes, sphingosine 1-phosphate (S1P) produced by SphK1 activates BPGM (and AMPK1α) by reducing ceramide/S1P ratio and inhibiting PP2A (protein phosphatase 2A), leading to increased 2,3-BPG production and enhanced O2 delivery. Erythrocyte-specific SphK1 knockout mice showed impaired BPGM activity and reduced 2,3-BPG, while AMPK agonists or PP2A inhibitors rescued 2,3-BPG levels. This defines a PP2A–AMPK1α–BPGM signaling axis in erythrocytes. |
Erythrocyte-specific SphK1 knockout mice, U-13C6 glucose isotope flux analysis, untargeted metabolomics, AMPK agonist/PP2A inhibitor pharmacology, translational validation in human CKD erythrocytes |
Circulation research |
High |
32284030
|
| 2020 |
Maternal erythrocyte ENT1 (equilibrative nucleoside transporter 1) controls BPGM activity via AMPK: ENT1-dependent adenosine uptake regulates intracellular AMP/ATP ratio, which activates AMPK, which in turn activates BPGM to produce 2,3-BPG, enhancing O2 delivery to the placenta. Genetic ablation of maternal eENT1 reduced AMPK activation and BPGM activity, impairing placental oxygenation and causing fetal growth restriction. |
Erythrocyte-specific ENT1 knockout mice, isotopic adenosine flux, metabolomics, AMPK/BPGM activity measurements, placental HIF-1α quantification |
JCI insight |
High |
32434995
|
| 2020 |
BPGM deficiency in mice (BpgmL166P loss-of-function mutation) protects against Plasmodium-induced cerebral malaria and severe malarial anemia. Protection involves two mechanisms: enhanced stress erythroid response to RBC loss and altered intracellular milieu of RBCs (increased oxyhemoglobin, reduced energy metabolism), which impairs Plasmodium maturation and replication. |
Murine genetic model (BpgmL166P), Plasmodium infection, parasitemia measurement, survival analysis, RBC metabolic profiling, oxyhemoglobin quantification |
Cell reports |
High |
32966787
|
| 2021 |
Erythrocyte ADORA2B (adenosine A2B receptor) activates AMPK and BPGM to promote 2,3-BPG production and O2 delivery. Loss of erythrocyte-specific ADORA2B in mice reduced AMPK activation and BPGM activity, decreased 2,3-BPG, and accelerated age-related cognitive and hearing decline. Erythroblast ADORA2B and BPGM mRNA levels and erythrocyte BPGM activity were found to decline during normal aging. |
Erythrocyte-specific ADORA2B knockout mice, AMPK/BPGM activity assays, 2,3-BPG measurement, behavioral testing (spatial learning/memory), auditory brainstem response, aging time-course |
PLoS biology |
High |
34138843
|
| 2021 |
H2S promotes hemoglobin (Hb) release from the erythrocyte membrane to the cytosol, consequently enhancing BPGM anchoring to the membrane. This mechanism reduces 2,3-BPG production by decreasing BPGM availability in the cytosol. CSE knockout mice showed elevated erythrocyte 2,3-BPG and increased p50, reversed by H2S donor treatment. |
CSE knockout mice, H2S donor (GYY4137) treatment, metabolomic profiling, p50 measurement, membrane/cytosol fractionation, cultured mouse and human erythrocytes |
Oxidative medicine and cellular longevity |
Medium |
33628390
|
| 2022 |
Crystal structures of human BPGM in complex with the activator 2-phosphoglycolate (2-PG), with and without 3-phosphoglycerate, were solved at 2.25 Å and 2.48 Å resolution. Structures revealed: (1) a new 2-PG binding site at the dimer interface in addition to the active-site binding; (2) conformational non-equivalence of the two active sites, with one in an open conformation with disordered Arg100, Arg116, Arg117, and C-terminus. Kinetic data confirmed 2-PG binds both an allosteric/noncatalytic site and the active site. |
X-ray crystallography, kinetic enzyme assays |
Acta crystallographica. Section D, Structural biology |
High |
35362470
|
| 2022 |
BPGM is expressed in astrocytes and is upregulated upon acute hypoxia. BPGM knockdown in hypoxic astrocytes promoted glycolysis (increased lactate, glycolytic gene expression), while BPGM overexpression or 2,3-DPG addition to normoxic cells downregulated glycolytic genes. Mechanistically, BPGM/2,3-DPG suppressed glycolysis by negatively regulating HIF-1α and TET2, while increasing FIH-1 expression. |
BPGM knockdown (siRNA) and overexpression in HEB astrocyte cells, lactate measurement, glycolytic gene expression (qPCR/Western), HIF-1α/FIH-1/TET2 protein quantification, in vivo hypoxia model |
Brain research bulletin |
Medium |
36334804
|
| 2023 |
Erythrocyte ENT1-AMPD3 axis controls BPGM activation: ENT1-mediated adenosine uptake generates AMP to activate AMPK, which then activates BPGM to produce 2,3-BPG and enhance O2 delivery. Loss of eENT1 abolishes AMPK and BPGM activation, reducing 2,3-BPG. Conversely, AMPD3 knockout preserves the adenine nucleotide pool, inducing AMPK-BPGM activation and protecting against CKD. This places BPGM downstream of ENT1→AMPD3→AMPK in erythrocytes. |
Erythrocyte-specific ENT1 and global AMPD3 knockout mice, two CKD models (Ang II and UUO), isotopic adenosine flux, metabolomics, AMPK/BPGM activity assays, translational human CKD studies |
Journal of the American Society of Nephrology : JASN |
High |
37725437
|
| 2024 |
BPGM is expressed in the distal nephron of the kidney (absent from proximal tubules). Inducible tubular-specific Bpgm knockout caused rapid kidney injury within 4 days (proximal tubular damage and tubulointerstitial fibrosis). Knockdown in vitro under osmotic stress led to enhanced glycolysis, decreased ROS elimination capacity, and increased apoptosis. Proteomics revealed involvement of BPGM in glycolysis, oxidative stress response, and inflammation pathways, establishing a non-erythroid physiological role for BPGM in kidney metabolism. |
Doxycycline-inducible tubular-specific Bpgm knockout mice, histology, immunofluorescence, proteomics, in vitro Bpgm knockdown under osmotic stress, ROS measurement, apoptosis assay |
Acta physiologica (Oxford, England) |
High |
39422260
|
| 2025 |
In erythrocytes of longevity individuals, increased BPGM and reduced MFSD2B protein levels collaboratively elevate intracellular S1P, promote GAPDH release from the membrane to the cytosol, and shift glucose metabolism toward the Rapoport-Luebering Shunt to increase 2,3-BPG production and O2 delivery. This BPGM–MFSD2B axis is associated with youthful erythrocyte O2 release function. |
Western blot for BPGM and MFSD2B protein quantification, untargeted erythrocyte metabolomics, 2,3-BPG and S1P measurement, GAPDH membrane/cytosol fractionation, cohort studies |
Aging cell |
Medium |
39924931
|
| 2025 |
Crystal structures of human BPGM clinical variants (Arg62Gln, Arg90Cys, Arg90His, Gln102Lys) and a citrate-bound BPGM structure were solved, revealing the structural basis of BPGM deficiency mutations and identifying a citrate-binding mode associated with open/closed conformational changes linked to enzyme activity. |
X-ray crystallography of recombinant BPGM variants |
International journal of biological macromolecules |
High |
41354380
|
| 2026 |
BPGM is a transcriptional target of NFAT5 induced under hypertonic conditions; BPGM depletion impairs induction of canonical NFAT5 target genes. BPGM regulates HIF-1α expression downstream of NFAT5, establishing a hierarchical NFAT5→BPGM→HIF-1α regulatory axis in osmotic stress response. Promoter analysis linked NFAT5/BPGM co-regulated genes to CpG islands and GC-rich elements, supporting metabolic-epigenetic coupling. |
RNA-seq (Bpgm knockdown vs. control under osmotic stress), NFAT5 target gene expression analysis, promoter enrichment analysis, HIF-1α quantification, in vitro hypertonic stress model |
Cellular and molecular life sciences : CMLS |
Medium |
41741816
|
| 2026 |
In hepatocellular carcinoma (HCC), BPGM promotes lactate accumulation and P300-mediated lactylation of RET proto-oncogene at Lys549 (K549), which competitively inhibits RET ubiquitination and prevents its degradation, stabilizing RET protein. BPGM also promotes M2 polarization of tumor-associated macrophages via lactate secretion. Hepatocyte-specific Bpgm knockout significantly attenuated DEN-induced HCC development in mice. |
LC-MS/MS identification of RET K549 lactylation, hepatocyte-specific Bpgm knockout mice (DEN model), BPGM overexpression in HCC cells, single-cell RNA-seq, spatial transcriptomics, proliferation/migration assays, macrophage co-culture, ubiquitination assays |
Advanced science (Weinheim, Baden-Wurttemberg, Germany) |
High |
41514495
|
| 2026 |
BPGM acts as a metastasis suppressor by triggering CDK1-T14 phosphorylation-dependent assembly of an EZH2-H3K27me3 repressor complex that silences BBOX1 (γ-butyrobetaine hydroxylase, rate-limiting enzyme in carnitine biosynthesis), thereby suppressing carnitine-dependent fatty acid oxidation in metastatic cells. Hypoxia-mediated KDM4A-H3K9me3 cascade inactivates this checkpoint. 2,3-BPG levels predict metastatic virulence. Pharmacological BBOX1 inhibition with Meldonium recapitulated BPGM-mediated suppression in orthotopic models. |
High-resolution metabolomics, CDK1 phosphorylation assays, ChIP for EZH2/H3K27me3, BBOX1 expression assays, orthotopic tumor models with Meldonium treatment, KDM4A/H3K9me3 analyses |
Neoplasia (New York, N.Y.) |
Medium |
41875824
|
| 2026 |
In nonalcoholic fatty liver disease (NAFLD), BPGM is upregulated by HIF-1α and promotes hepatic steatosis by altering glycolysis/gluconeogenesis and increasing pyruvate levels. BPGM knockdown in HepG2 cells, liver organoids, and HFD-fed mice attenuated lipid accumulation, cellular injury, and oxidative stress. Pyruvate addition reversed the protective effects of BPGM knockdown. |
BPGM knockdown (siRNA) in HepG2 cells, liver organoids (FFA model), and HFD mouse model; metabolomics, lipid staining, oxidative stress assays, HIF-1α manipulation |
Human cell |
Medium |
42126781
|
| 2025 |
BPGM deletion in mouse oocytes (Bpgm knockout) significantly reduced the rate of oocyte maturation and mouse fertility (fewer pups per litter), accompanied by altered expression of meiosis-related genes and genes in glycolysis, TCA cycle, and pentose phosphate pathway. Single-oocyte metabolomics by nano-electrospray ionization MS showed that BPGM deficiency impaired glucose metabolism pathways, tyrosine metabolism, and amino acid biosynthesis in oocytes. |
Bpgm knockout mice, oocyte maturation rate assay, fertility measurement, single-cell metabolomics (induced nanoelectrospray-ionization MS), gene expression profiling |
Molecular human reproduction |
High |
40323314
|