PMM1

gene
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Also known as Sec53

Summary

PMM1 (phosphomannomutase 1, HGNC:9114) is a protein-coding gene on chromosome 22q13.2, encoding Phosphomannomutase 1 (Q92871). Involved in the synthesis of the GDP-mannose and dolichol-phosphate-mannose required for a number of critical mannosyl transfer reactions.

Phosphomannomutase catalyzes the conversion between D-mannose 6-phosphate and D-mannose 1-phosphate which is a substrate for GDP-mannose synthesis. GDP-mannose is used for synthesis of dolichol-phosphate-mannose, which is essential for N-linked glycosylation and thus the secretion of several glycoproteins as well as for the synthesis of glycosyl-phosphatidyl-inositol (GPI) anchored proteins.

Source: NCBI Gene 5372 — RefSeq curated summary.

At a glance

  • GWAS associations: 5
  • Clinical variants (ClinVar): 58 total — 1 likely-pathogenic
  • MANE Select transcript: NM_002676

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:9114
Approved symbolPMM1
Namephosphomannomutase 1
Location22q13.2
Locus typegene with protein product
StatusApproved
AliasesSec53
Ensembl geneENSG00000100417
Ensembl biotypeprotein_coding
OMIM601786
Entrez5372

Gene structure

Transcript identifiers

Ensembl transcripts: 24 — 16 protein_coding, 6 retained_intron, 1 nonsense_mediated_decay, 1 protein_coding_CDS_not_defined

ENST00000216259, ENST00000414636, ENST00000463617, ENST00000466645, ENST00000472620, ENST00000478337, ENST00000482178, ENST00000485648, ENST00000493389, ENST00000896615, ENST00000896616, ENST00000896617, ENST00000896618, ENST00000896619, ENST00000896620, ENST00000940468, ENST00000940469, ENST00000940470, ENST00000940471, ENST00000940472, ENST00000949536, ENST00000949537, ENST00000949538, ENST00000949539

RefSeq mRNA: 1 — MANE Select: NM_002676 NM_002676

CCDS: CCDS14020

Canonical transcript exons

ENST00000216259 — 8 exons

ExonStartEnd
ENSE000006559644158395941584058
ENSE000018302644157690041577440
ENSE000018626204158971941589840
ENSE000035021214158607641586193
ENSE000035732964157780841577923
ENSE000036199814158452741584603
ENSE000036247344158428141584372
ENSE000036267614157880641578881

Expression profiles

Bgee: expression breadth ubiquitous, 271 present calls, max score 98.70.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 22.7241 / max 102.8609, expressed in 1812 samples.

FANTOM5 promoters (2 alternative TSS)

Promoter IDTPM avgSamples expressed
19436821.92641810
1943690.7977472

Top tissues by expression

295 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
lower esophagus mucosaUBERON:003583498.70gold quality
mucosa of transverse colonUBERON:000499196.33gold quality
body of stomachUBERON:000116195.88gold quality
right lobe of liverUBERON:000111495.82gold quality
nucleus accumbensUBERON:000188295.49gold quality
right frontal lobeUBERON:000281095.30gold quality
right adrenal glandUBERON:000123395.17gold quality
right lungUBERON:000216795.10gold quality
left adrenal glandUBERON:000123495.04gold quality
right adrenal gland cortexUBERON:003582794.87gold quality
cingulate cortexUBERON:000302794.83gold quality
left adrenal gland cortexUBERON:003582594.83gold quality
left ovaryUBERON:000211994.80gold quality
anterior cingulate cortexUBERON:000983594.80gold quality
putamenUBERON:000187494.77gold quality
right ovaryUBERON:000211894.71gold quality
esophagus mucosaUBERON:000246994.67gold quality
prefrontal cortexUBERON:000045194.64gold quality
right uterine tubeUBERON:000130294.58gold quality
caudate nucleusUBERON:000187394.58gold quality
adrenal cortexUBERON:000123594.29gold quality
amygdalaUBERON:000187694.13gold quality
transverse colonUBERON:000115793.87gold quality
Brodmann (1909) area 9UBERON:001354093.85gold quality
esophagusUBERON:000104393.62gold quality
stromal cell of endometriumCL:000225593.57gold quality
endocervixUBERON:000045893.56gold quality
popliteal arteryUBERON:000225093.49gold quality
tibial arteryUBERON:000761093.48gold quality
pharyngeal mucosaUBERON:000035593.37gold quality

Single-cell (SCXA)

Detected in 1 experiment(s), a significant marker in 1.

ExperimentMarker?Max mean expression
E-ANND-3no0.00

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

32 targeting PMM1, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-5193100.0067.261744
HSA-MIR-200B-3P100.0073.312693
HSA-MIR-200C-3P100.0073.352685
HSA-MIR-429100.0073.442698
HSA-MIR-6721-5P99.9368.922981
HSA-MIR-497-5P99.9271.832674
HSA-MIR-15A-5P99.9072.802787
HSA-MIR-15B-5P99.9072.782798
HSA-MIR-16-5P99.9072.802780
HSA-MIR-195-5P99.9072.812805
HSA-MIR-4731-5P99.8967.232537
HSA-MIR-424-5P99.8971.902641
HSA-MIR-6838-5P99.8971.942690
HSA-MIR-4690-5P99.6566.24813
HSA-MIR-3191-3P99.4563.94356
HSA-MIR-318299.4068.152454
HSA-MIR-520F-5P99.3470.401632
HSA-MIR-148A-5P99.3068.271141
HSA-MIR-450599.2767.812678
HSA-MIR-578799.2267.862628
HSA-MIR-450499.1069.141328
HSA-MIR-211798.4867.971307
HSA-MIR-204-3P97.8066.841656
HSA-MIR-4646-5P97.7066.841692
HSA-MIR-431497.5067.301369
HSA-MIR-4640-5P97.4266.331543
HSA-MIR-4693-5P97.3567.021234
HSA-MIR-4726-5P97.2465.671299
HSA-MIR-3192-5P96.9865.761926
HSA-MIR-447195.1166.84755

Literature-anchored findings (GeneRIF, showing 7)

  • Mutations in phosphomannomutase is associated with ophthalmic manifestations of congenital disorder of glycosylation type 1a (PMID:12789572)
  • human alpha-phosphomannomutase 1 crystallographic structure reveals the structural basis of congenital disorder of glycosylation type 1a (PMID:16540464)
  • analysis of mental development in a patient with phosphomannomutase deficiency who is compound heterozygous for T237R/C241S mutations [case report] (PMID:17186415)
  • The genes GUS and PMM1 are recommended for normalization purposes in gene expression studies of liver tissue from patients with chronic hepatitis. (PMID:18591914)
  • PMM1 is responsible for the degradation of Glc-1,6-P(2) in brain (PMID:18927083)
  • a triple mutant of phospomannomutase1 that retains mutase and phosphatase activity, but is unable to bind inosine monophosphate, was characterized. (PMID:29261720)
  • The 1.93 A resolution structure of PMM1 complexed with inosine monophosphate (IMP) was determined. The structure reveals IMP bound at the substrate recruitment site, thus inhibiting the mutase activity while simultaneously activating a phosphatase activity (IMP Kact = 1.5 muM) resulting from the hydrolysis of the phospho-enzyme. (PMID:29695157)

Cross-species orthologs

6 orthologs

OrganismSymbolGene ID
danio_reriopmm1ENSDARG00000038398
danio_rerioENSDARG00000115870
mus_musculusPmm1ENSMUSG00000022474
rattus_norvegicusPmm1ENSRNOG00000005358
drosophila_melanogasterPmm2FBGN0036300
caenorhabditis_elegansWBGENE00009925

Paralogs (1): PMM2 (ENSG00000140650)

Protein

Protein identifiers

Phosphomannomutase 1Q92871 (reviewed: Q92871)

Alternative names: PMMH-22

All UniProt accessions (2): Q92871, F8WFD5

UniProt curated annotations — full annotation on UniProt →

Function. Involved in the synthesis of the GDP-mannose and dolichol-phosphate-mannose required for a number of critical mannosyl transfer reactions. In addition, may be responsible for the degradation of glucose-1,6-bisphosphate in ischemic brain.

Subunit / interactions. Homodimer.

Subcellular location. Cytoplasm.

Tissue specificity. Strong expression in liver, heart, brain, and pancreas; lower expression in skeletal muscle.

Activity regulation. IMP, a metabolite whose concentration is elevated in anoxia, inhibits phosphomannomutase and phosphoglucomutase activities and strongly enhances glucose-1,6-bisphosphatase activity.

Pathway. Nucleotide-sugar biosynthesis; GDP-alpha-D-mannose biosynthesis; alpha-D-mannose 1-phosphate from D-fructose 6-phosphate: step 2/2.

Similarity. Belongs to the eukaryotic PMM family.

RefSeq proteins (1): NP_002667* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR005002PMMFamily
IPR006379HAD-SF_hydro_IIBFamily
IPR023214HAD_sfHomologous_superfamily
IPR036412HAD-like_sfHomologous_superfamily
IPR043169PMM_capHomologous_superfamily

Pfam: PF03332

Enzyme classification (BRENDA):

  • EC 5.4.2.8 — phosphomannomutase (BRENDA: 45 organisms, 84 substrates, 44 inhibitors, 90 Km, 35 kcat entries)

Substrate kinetics (BRENDA)

11 substrates with measured Km, best-characterized 11. Km ranges are aggregated across organisms/conditions.

SubstrateKm (mM)Measurements
ALPHA-D-GLUCOSE 1-PHOSPHATE0.006–0.451631
ALPHA-D-MANNOSE 1-PHOSPHATE0.0056–1.3722
GLUCOSE 1-PHOSPHATE0.0013–0.02214
MANNOSE 1-PHOSPHATE0.003–0.25
D-GLUCOSE-1-PHOSPHATE0.0135–34
D-MANNOSE 1-PHOSPHATE0.018–0.154
D-MANNOSE-1-PHOSPHATE0.016–3.23
D-GLUCOSE 1-PHOSPHATE0.0075–0.06542
2-DEOXYRIBOSE-1-PHOSPHATE3.51
D-MANNOSE 6-PHOSPHATE0.04821
MANNOSE 6-PHOSPHATE0.0741

Catalyzed reactions (Rhea), 1 shown:

  • alpha-D-mannose 1-phosphate = D-mannose 6-phosphate (RHEA:11140)

UniProt features (50 total): binding site 13, strand 12, helix 12, turn 5, modified residue 2, sequence conflict 2, active site 2, initiator methionine 1, chain 1

Structure

Experimental structures (PDB)

7 structures.

PDBMethodResolution (Å)
2FUEX-RAY DIFFRACTION1.75
6CFVX-RAY DIFFRACTION1.92
6CFRX-RAY DIFFRACTION2.07
6CFSX-RAY DIFFRACTION2.07
2FUCX-RAY DIFFRACTION2.1
6CFUX-RAY DIFFRACTION2.24
6CFTX-RAY DIFFRACTION2.43

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q92871-F193.090.86

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Catalytic / active sites (2): 19 (nucleophile); 21 (proton donor/acceptor)

Ligand- & substrate-binding residues (13): 186; 188; 190; 218; 230; 232; 235; 19; 21; 28; 132; 143

Post-translational modifications (2): 2, 242

Function

Pathways and Gene Ontology

Reactome pathways

1 pathways

IDPathway
R-HSA-446205Synthesis of GDP-mannose

MSigDB gene sets: 196 (showing top): GOBP_RESPONSE_TO_PEPTIDE, GOBP_PROTEIN_N_LINKED_GLYCOSYLATION, GRAESSMANN_APOPTOSIS_BY_DOXORUBICIN_UP, GRAESSMANN_RESPONSE_TO_MC_AND_DOXORUBICIN_UP, GOBP_ORGANOPHOSPHATE_METABOLIC_PROCESS, GOBP_NUCLEOSIDE_PHOSPHATE_BIOSYNTHETIC_PROCESS, GOBP_ORGANOPHOSPHATE_BIOSYNTHETIC_PROCESS, GOBP_CARBOHYDRATE_DERIVATIVE_METABOLIC_PROCESS, GOBP_NUCLEOBASE_CONTAINING_SMALL_MOLECULE_METABOLIC_PROCESS, WANG_ESOPHAGUS_CANCER_VS_NORMAL_DN, SHEDDEN_LUNG_CANCER_GOOD_SURVIVAL_A4, GOBP_CARBOHYDRATE_DERIVATIVE_BIOSYNTHETIC_PROCESS, GOBP_CARBOHYDRATE_METABOLIC_PROCESS, HOSHIDA_LIVER_CANCER_LATE_RECURRENCE_DN, AFFAR_YY1_TARGETS_UP

GO Biological Process (5): mannose metabolic process (GO:0006013), protein N-linked glycosylation (GO:0006487), GDP-mannose biosynthetic process (GO:0009298), cellular response to leukemia inhibitory factor (GO:1990830), nucleoside phosphate biosynthetic process (GO:1901293)

GO Molecular Function (4): phosphomannomutase activity (GO:0004615), metal ion binding (GO:0046872), protein binding (GO:0005515), isomerase activity (GO:0016853)

GO Cellular Component (3): cytosol (GO:0005829), neuronal cell body (GO:0043025), cytoplasm (GO:0005737)

Reactome top-level categories

Rollup of top-1 pathways:

CategoryPathways
Synthesis of substrates in N-glycan biosythesis1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cellular anatomical structure2
hexose metabolic process1
glycoprotein biosynthetic process1
phosphomannomutase activity1
nucleotide-sugar biosynthetic process1
GDP-mannose metabolic process1
cellular response to cytokine stimulus1
response to leukemia inhibitory factor1
nucleoside phosphate metabolic process1
nucleobase-containing compound biosynthetic process1
organophosphate biosynthetic process1
intramolecular phosphotransferase activity1
cation binding1
binding1
catalytic activity1
cytoplasm1
somatodendritic compartment1
cell body1
intracellular anatomical structure1

Protein interactions and networks

STRING

1592 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
PMM1MPIP34949557
PMM1GMPPBQ9Y5P6542
PMM1GMPPAQ96IJ6500
PMM1CSNK1DP48730497
PMM1CRYMQ14894497
PMM1HMOX2P30519492
PMM1GPIP06744490
PMM1DPM1O60762488
PMM1CRYBB1P53674470
PMM1DOLKQ9UPQ8465
PMM1TPI1P00938457
PMM1ALG6Q9Y672440
PMM1SSTR1P30872429
PMM1CRYBA1P05813426
PMM1GALK1P51570425

IntAct

26 interactions, top by confidence:

ABTypeScore
PMM1RAB6Apsi-mi:“MI:0915”(physical association)0.670
RAB6APMM1psi-mi:“MI:0915”(physical association)0.670
PMM1RAB6Bpsi-mi:“MI:0915”(physical association)0.560
RAB6APMM1psi-mi:“MI:0915”(physical association)0.560
PMM1PMM2psi-mi:“MI:0914”(association)0.530
PMM1MFHAS1psi-mi:“MI:0407”(direct interaction)0.440
PMM1psi-mi:“MI:0407”(direct interaction)0.440
CACNA1APMM1psi-mi:“MI:0915”(physical association)0.370
PMM1RCHY1psi-mi:“MI:0915”(physical association)0.370
ZSCAN26TDGpsi-mi:“MI:0914”(association)0.350
ABCA9PMM2psi-mi:“MI:0914”(association)0.350
DDX28UBA6psi-mi:“MI:0914”(association)0.350
VENTXUBA6psi-mi:“MI:0914”(association)0.350
E2F3MYO1Cpsi-mi:“MI:0914”(association)0.350
RAB6BPMM1psi-mi:“MI:0915”(physical association)0.000
RAB6APMM1psi-mi:“MI:0915”(physical association)0.000

BioGRID (37): RAB6A (Two-hybrid), POTEE (Affinity Capture-MS), HEPHL1 (Affinity Capture-MS), VSIG8 (Affinity Capture-MS), PMM2 (Affinity Capture-MS), QRICH1 (Affinity Capture-MS), DSG4 (Affinity Capture-MS), GNB2 (Affinity Capture-MS), DUSP14 (Affinity Capture-MS), LRRC15 (Affinity Capture-MS), RAB6A (Two-hybrid), PMM1 (Affinity Capture-MS), PMM2 (Affinity Capture-MS), POTEE (Affinity Capture-MS), QRICH1 (Affinity Capture-MS)

ESM2 similar proteins: A0A0K9RL25, A0A0U1WZ18, A0A1S4A695, B4G0F3, B8BKI7, B9N1F9, C6JS30, E0CSI1, M2VWL5, O14023, O15305, O24653, O35077, O35621, O57656, O80840, P00949, P38652, Q02908, Q08DP0, Q1W374, Q1W377, Q1ZXC6, Q23651, Q259G4, Q29NT9, Q2R483, Q3SZJ9, Q3ULJ0, Q4R5E4, Q5TNH5, Q5XIZ6, Q5ZID6, Q5ZJ08, Q5ZKF6, Q60HD6, Q60LW7, Q7SYN4, Q7XPW5, Q8GWU0

Diamond homologs: A0A0K9RL25, A0A0U1WZ18, A0A1S4A695, M2VWL5, O15305, O35621, O43976, O80840, P07283, P31353, Q1W374, Q1W375, Q1W376, Q1W377, Q259G4, Q3SZJ9, Q54X03, Q60HD6, Q7XPW5, Q86B09, Q8SVM5, Q92871, Q9UTJ2, Q9VTZ6, Q9XUE6, Q9Z2M7

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

58 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic0
Likely pathogenic1
Uncertain significance46
Likely benign1
Benign0

Top pathogenic / likely-pathogenic (1)

Variant IDHGVSClassification
3600317NM_002676.3(PMM1):c.388G>A (p.Glu130Lys)Likely pathogenic

SpliceAI

1674 predictions. Top by Δscore:

VariantEffectΔscore
22:41577439:CC:Cacceptor_gain1.0000
22:41577440:CC:Cacceptor_gain1.0000
22:41577803:CTCA:Cdonor_loss1.0000
22:41577804:TCACA:Tdonor_loss1.0000
22:41577805:C:CCdonor_loss1.0000
22:41577806:A:ACdonor_gain1.0000
22:41577806:ACA:Adonor_loss1.0000
22:41577807:C:CCdonor_gain1.0000
22:41577807:CA:Cdonor_gain1.0000
22:41577807:CAG:Cdonor_gain1.0000
22:41577807:CAGG:Cdonor_gain1.0000
22:41577807:CAGGG:Cdonor_gain1.0000
22:41577822:T:Adonor_gain1.0000
22:41577919:GCCTC:Gacceptor_gain1.0000
22:41577920:CCTCC:Cacceptor_gain1.0000
22:41577921:CTC:Cacceptor_gain1.0000
22:41577922:TC:Tacceptor_gain1.0000
22:41577923:CC:Cacceptor_gain1.0000
22:41577924:C:Aacceptor_loss1.0000
22:41577924:C:CCacceptor_gain1.0000
22:41577925:T:Aacceptor_loss1.0000
22:41578879:TTT:Tacceptor_gain1.0000
22:41578882:C:CCacceptor_gain1.0000
22:41583953:TGGTA:Tdonor_loss1.0000
22:41583954:GGTAC:Gdonor_loss1.0000
22:41583955:GTAC:Gdonor_loss1.0000
22:41583956:TA:Tdonor_loss1.0000
22:41583957:A:Tdonor_loss1.0000
22:41583958:C:CAdonor_loss1.0000
22:41584054:TTCCA:Tacceptor_gain1.0000

AlphaMissense

1734 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
22:41577429:G:CD226E0.999
22:41577429:G:TD226E0.999
22:41577430:T:AD226V0.999
22:41577430:T:GD226A0.999
22:41577824:C:TG217E0.999
22:41577829:G:CF215L0.999
22:41577829:G:TF215L0.999
22:41577831:A:GF215L0.999
22:41577880:C:AK198N0.999
22:41577880:C:GK198N0.999
22:41577910:G:CS188R0.999
22:41577910:G:TS188R0.999
22:41577912:T:GS188R0.999
22:41583974:G:CF153L0.999
22:41583974:G:TF153L0.999
22:41583976:A:GF153L0.999
22:41584008:C:TG142D0.999
22:41584022:G:CN137K0.999
22:41584022:G:TN137K0.999
22:41584567:C:TG81E0.999
22:41589744:T:AD21V0.999
22:41577430:T:CD226G0.998
22:41577431:C:GD226H0.998
22:41577824:C:AG217V0.998
22:41577825:C:AG217W0.998
22:41577881:T:AK198M0.998
22:41577882:T:CK198E0.998
22:41577882:T:GK198Q0.998
22:41577911:C:TS188N0.998
22:41583975:A:GF153S0.998

dbSNP variants (sampled 300 via entrez): RS1000042826 (22:41587128 G>T), RS1000098396 (22:41580574 C>T), RS1000126999 (22:41580006 C>T), RS1000499164 (22:41580267 G>A,C,T), RS1000841928 (22:41579633 C>T), RS1000918129 (22:41585641 G>A), RS1001076213 (22:41578996 C>G), RS1001098486 (22:41579259 C>T), RS1001759819 (22:41589861 C>A,T), RS1001842346 (22:41578233 G>T), RS1001939846 (22:41579341 C>G), RS1001991139 (22:41586018 A>C), RS1002022381 (22:41585714 A>T), RS1002601086 (22:41582000 C>T), RS1002658647 (22:41589271 A>G)

Disease associations

OMIM: gene MIM:601786 | disease phenotypes: MIM:617260

GenCC curated gene-disease

Mondo (1): global developmental delay, absent or hypoplastic corpus callosum, and dysmorphic facies (MONDO:0014994)

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

5 associations (top):

StudyTraitp-value
GCST003043_197Inflammatory bowel disease3.000000e-06
GCST003044_35Crohn’s disease2.000000e-10
GCST005232_52Neuroticism3.000000e-18
GCST010002_83Refractive error2.000000e-27
GCST010143_2Meat-related diet4.000000e-08

EFO canonical traits (2, from GWAS)

EFO IDTrait name
EFO:0007660neuroticism measurement
EFO:0008111diet measurement

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

CTD chemical–gene interactions

24 total (human), top 24 by PubMed support.

ChemicalActions (top 5)PubMed papers
Valproic Acidaffects expression, increases expression3
Cisplatinaffects expression, increases expression2
Cyclosporineincreases expression, decreases expression2
aristolochic acid Iincreases expression1
triphenyl phosphateaffects expression1
sodium arseniteincreases expression1
ciglitazoneaffects binding, increases expression1
ICG 001increases expression1
4-(4-((5-(4,5-dimethyl-2-nitrophenyl)-2-furanyl)methylene)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzoic acidincreases expression1
Temozolomidedecreases expression1
Decitabineaffects expression1
Leflunomidedecreases expression1
Cadmiumincreases abundance, increases expression1
Caffeineincreases phosphorylation1
Estradioldecreases expression1
Methyl Methanesulfonateincreases expression1
Silicon Dioxidedecreases expression1
Smokedecreases expression1
Tetrachlorodibenzodioxinaffects expression1
Tobacco Smoke Pollutiondecreases expression1
Tunicamycinincreases expression1
Cadmium Chlorideincreases abundance, increases expression1
Copper Sulfatedecreases expression1
Lactic Aciddecreases expression1

Clinical trials (associated diseases)

0 trials via MONDO — disease-level, not drug-specific.