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Aliases for HMBS Gene

Aliases for HMBS Gene

  • Hydroxymethylbilane Synthase 2 3 4
  • PBGD 3 4 6
  • UPS 3 4 6
  • Porphyria, Acute; Chester Type 2 3
  • Pre-Uroporphyrinogen Synthase 3 4
  • Uroporphyrinogen I Synthase 2 3
  • Porphobilinogen Deaminase 2 3
  • EC 4 63
  • PBG-D 3 4
  • Uroporphyrinogen I Synthetase 3
  • PORC 3

External Ids for HMBS Gene

Previous HGNC Symbols for HMBS Gene

  • PBGD
  • UPS
  • PORC

Previous GeneCards Identifiers for HMBS Gene

  • GC11P135563
  • GC11P120467
  • GC11P118989
  • GC11P118493
  • GC11P118460
  • GC11P118955
  • GC11P114895

Summaries for HMBS Gene

Entrez Gene Summary for HMBS Gene

  • This gene encodes a member of the hydroxymethylbilane synthase superfamily. The encoded protein is the third enzyme of the heme biosynthetic pathway and catalyzes the head to tail condensation of four porphobilinogen molecules into the linear hydroxymethylbilane. Mutations in this gene are associated with the autosomal dominant disease acute intermittent porphyria. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

GeneCards Summary for HMBS Gene

HMBS (Hydroxymethylbilane Synthase) is a Protein Coding gene. Diseases associated with HMBS include porphyria, acute intermittent and acute porphyria. Among its related pathways are Metabolism and Metabolism. GO annotations related to this gene include hydroxymethylbilane synthase activity.

UniProtKB/Swiss-Prot for HMBS Gene

  • Tetrapolymerization of the monopyrrole PBG into the hydroxymethylbilane pre-uroporphyrinogen in several discrete steps

Gene Wiki entry for HMBS Gene

No data available for Tocris Summary , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for HMBS Gene

Genomics for HMBS Gene

Regulatory Elements for HMBS Gene

Genomic Location for HMBS Gene

119,084,866 bp from pter
119,093,549 bp from pter
8,684 bases
Plus strand

Genomic View for HMBS Gene

UCSC Golden Path with GeneCards custom track
Cytogenetic band:
Genomic Location for HMBS Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for HMBS Gene

Proteins for HMBS Gene

  • Protein details for HMBS Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Porphobilinogen deaminase
    Protein Accession:
    Secondary Accessions:
    • A8K2L0
    • G3V1P4
    • G5EA58
    • P08396
    • Q16012

    Protein attributes for HMBS Gene

    361 amino acids
    Molecular mass:
    39330 Da
    Name=dipyrromethane; Xref=ChEBI:CHEBI:60342; Note=Binds 1 dipyrromethane group covalently.;
    Quaternary structure:
    No Data Available
    • The porphobilinogen subunits are added to the dipyrromethane group

    Three dimensional structures from OCA and Proteopedia for HMBS Gene

    Alternative splice isoforms for HMBS Gene


neXtProt entry for HMBS Gene

Proteomics data for HMBS Gene at MOPED

Selected DME Specific Peptides for HMBS Gene

Post-translational modifications for HMBS Gene

  • Ubiquitination at Lys227
  • Modification sites at PhosphoSitePlus

Antibody Products

Domains for HMBS Gene

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the HMBS family.
  • Belongs to the HMBS family.
genes like me logo Genes that share domains with HMBS: view

No data available for Gene Families for HMBS Gene

Function for HMBS Gene

Molecular function for HMBS Gene

GENATLAS Biochemistry:
hydroxymethylbilane synthase,cytosolic,catalyzing the polymerization of four PGB,third step of porphyrin biosynthesis
UniProtKB/Swiss-Prot CatalyticActivity:
4 porphobilinogen + H(2)O = hydroxymethylbilane + 4 NH(3)
UniProtKB/Swiss-Prot Function:
Tetrapolymerization of the monopyrrole PBG into the hydroxymethylbilane pre-uroporphyrinogen in several discrete steps

Enzyme Numbers (IUBMB) for HMBS Gene

Gene Ontology (GO) - Molecular Function for HMBS Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0004418 hydroxymethylbilane synthase activity TAS --
genes like me logo Genes that share ontologies with HMBS: view
genes like me logo Genes that share phenotypes with HMBS: view

Animal Models for HMBS Gene

MGI Knock Outs for HMBS:

Animal Model Products

miRNA for HMBS Gene

miRTarBase miRNAs that target HMBS

No data available for Transcription Factor Targets and HOMER Transcription for HMBS Gene

Localization for HMBS Gene

Subcellular locations from UniProtKB/Swiss-Prot for HMBS Gene


Subcellular locations from

Jensen Localization Image for HMBS Gene COMPARTMENTS Subcellular localization image for HMBS gene
Compartment Confidence
cytosol 4
chloroplast 2
mitochondrion 2
nucleus 2
endoplasmic reticulum 1
extracellular 1
plasma membrane 1

Gene Ontology (GO) - Cellular Components for HMBS Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005829 cytosol TAS --
genes like me logo Genes that share ontologies with HMBS: view

Pathways for HMBS Gene

genes like me logo Genes that share pathways with HMBS: view

Pathways by source for HMBS Gene

UniProtKB/Swiss-Prot P08397-HEM3_HUMAN

  • Pathway: Porphyrin-containing compound metabolism; protoporphyrin-IX biosynthesis; coproporphyrinogen-III from 5-aminolevulinate: step 2/4

Interacting Proteins for HMBS Gene

Gene Ontology (GO) - Biological Process for HMBS Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0006778 porphyrin-containing compound metabolic process TAS --
GO:0006782 protoporphyrinogen IX biosynthetic process IEA --
GO:0006783 heme biosynthetic process TAS --
GO:0018160 peptidyl-pyrromethane cofactor linkage IEA --
GO:0033014 tetrapyrrole biosynthetic process --
genes like me logo Genes that share ontologies with HMBS: view

Drugs for HMBS Gene

(6) HMDB Compounds for HMBS Gene

Compound Synonyms Cas Number PubMed IDs
  • Ammonia anhydrous
  • Formyl coenzyme A
  • (protoporphyrinato)iron
  • 3,8,13,18-Tetrakis(carboxymethyl)-19-(hydroxymethyl)bilane-2,7,12,17-tetrapropanoate
  • 5-(Aminomethyl)-4-(carboxymethyl)-Pyrrole-3-propionate

(35) Novoseek inferred chemical compound relationships for HMBS Gene

Compound -log(P) Hits PubMed IDs
porphobilinogen 99.1 170
hydroxymethylbilane 98.2 68
uroporphyrinogen-iii 86.4 10
5-aminolevulinic acid 85.3 33
porphyrin 79.1 21
genes like me logo Genes that share compounds with HMBS: view

Transcripts for HMBS Gene

Unigene Clusters for HMBS Gene

Hydroxymethylbilane synthase:
Representative Sequences:

miRNA Products

Inhibitory RNA Products

  • Predesigned siRNA for gene silencing in human,mouse,rat for HMBS

Flow Cytometry Products

Alternative Splicing Database (ASD) splice patterns (SP) for HMBS Gene

No ASD Table

Relevant External Links for HMBS Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for HMBS Gene

mRNA expression in normal human tissues for HMBS Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

mRNA differential expression in normal tissues according to GTEx for HMBS Gene

This gene is overexpressed in Whole Blood (5.1).

Protein differential expression in normal tissues for HMBS Gene

This gene is overexpressed in Fetal Liver (25.0).

Integrated Proteomics: protein expression from ProteomicsDB, MOPED, and MaxQB for HMBS Gene

SOURCE GeneReport for Unigene cluster for HMBS Gene Hs.82609

mRNA Expression by UniProt/SwissProt for HMBS Gene

Tissue specificity: Isoform 1 is ubiquitously expressed. Isoform 2 is found only in erythroid cells.
genes like me logo Genes that share expressions with HMBS: view

Expression partners for HMBS Gene

* - Elite partner

Primer Products

In Situ Assay Products

Orthologs for HMBS Gene

This gene was present in the common ancestor of eukaryotes.

Orthologs for HMBS Gene

Organism Taxonomy Gene Similarity Type Details
(Bos Taurus)
Mammalia HMBS 35
  • 90.3 (n)
  • 92.8 (a)
  • 93 (a)
(Canis familiaris)
Mammalia HMBS 35
  • 90.4 (n)
  • 94.18 (a)
  • 94 (a)
(Mus musculus)
Mammalia Hmbs 35
  • 87.37 (n)
  • 91.36 (a)
Hmbs 16
Hmbs 36
  • 91 (a)
(Rattus norvegicus)
Mammalia Hmbs 35
  • 87.74 (n)
  • 91.36 (a)
(Monodelphis domestica)
Mammalia HMBS 36
  • 85 (a)
(Ornithorhynchus anatinus)
Mammalia HMBS 36
  • 77 (a)
(Pan troglodytes)
Mammalia HMBS 36
  • 100 (a)
(Gallus gallus)
Aves HMBS 35
  • 70.79 (n)
  • 76.44 (a)
  • 74 (a)
(Anolis carolinensis)
Reptilia HMBS 36
  • 72 (a)
tropical clawed frog
(Silurana tropicalis)
Amphibia hmbs 35
  • 67.82 (n)
  • 74.43 (a)
Str.4847 35
African clawed frog
(Xenopus laevis)
Amphibia Xl.32592 35
(Danio rerio)
Actinopterygii hmbsb 35
  • 67.83 (n)
  • 74.05 (a)
zgc64128 35
hmbsa 36
  • 66 (a)
hmbsb 36
  • 69 (a)
African malaria mosquito
(Anopheles gambiae)
Insecta AgaP_AGAP011080 35
  • 56.2 (n)
  • 56.93 (a)
fruit fly
(Drosophila melanogaster)
Insecta l(3)02640 35
  • 56.29 (n)
  • 54.9 (a)
l(3)02640 36
  • 26 (a)
A. gosspyii yeast
(Ashbya gossypii)
Saccharomycetes AGOS_ABL107C 35
  • 51.68 (n)
  • 45.6 (a)
K. lactis yeast
(Kluyveromyces lactis)
Saccharomycetes KLLA0C15147g 35
  • 48.21 (n)
  • 43.32 (a)
baker's yeast
(Saccharomyces cerevisiae)
Saccharomycetes HEM3 35
  • 51.03 (n)
  • 43.32 (a)
HEM3 36
  • 41 (a)
HEM3 38
thale cress
(Arabidopsis thaliana)
eudicotyledons HEMC 35
  • 45.4 (n)
  • 40.34 (a)
(Oryza sativa)
Liliopsida Os02g0168800 35
  • 46.53 (n)
  • 40.99 (a)
sea squirt
(Ciona intestinalis)
Ascidiacea Cin.12172 35
bread mold
(Neurospora crassa)
Ascomycetes NCU10292 35
  • 51.8 (n)
  • 45.86 (a)
fission yeast
(Schizosaccharomyces pombe)
Schizosaccharomycetes hem3 35
  • 48.75 (n)
  • 45.31 (a)
sea squirt
(Ciona savignyi)
Ascidiacea CSA.10281 36
  • 55 (a)
Species with no ortholog for HMBS:
  • Actinobacteria (Mycobacterium tuberculosis)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • rainbow trout (Oncorhynchus mykiss)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)

Evolution for HMBS Gene

Gene Tree for HMBS (if available)
Gene Tree for HMBS (if available)

Paralogs for HMBS Gene

genes like me logo Genes that share paralogs with HMBS: view

No data available for Paralogs for HMBS Gene

Variants for HMBS Gene

Sequence variations from dbSNP and Humsavar for HMBS Gene

SNP ID Clin Chr 11 pos Sequence Context AA Info Type MAF
rs17075 -- 119,088,621(+) TCCAA(A/G)TCTCT intron-variant
rs474201 -- 119,087,519(-) TCCCA(C/T)CAGGA intron-variant, upstream-variant-2KB
rs494048 -- 119,090,521(+) ACATT(C/T)CCCTG intron-variant
rs549893 -- 119,089,022(+) CACAG(C/T)GCTAG intron-variant
rs589925 -- 119,084,969(+) GAGCC(C/T)CCGGC utr-variant-5-prime

Structural Variations from Database of Genomic Variants (DGV) for HMBS Gene

Variant ID Type Subtype PubMed ID
nsv898416 CNV Loss 21882294

Relevant External Links for HMBS Gene

HapMap Linkage Disequilibrium report
Human Gene Mutation Database (HGMD)

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for HMBS Gene

Disorders for HMBS Gene

(1) OMIM Diseases for HMBS Gene (609806)


  • Acute intermittent porphyria (AIP) [MIM:176000]: A form of porphyria. Porphyrias are inherited defects in the biosynthesis of heme, resulting in the accumulation and increased excretion of porphyrins or porphyrin precursors. They are classified as erythropoietic or hepatic, depending on whether the enzyme deficiency occurs in red blood cells or in the liver. AIP is an autosomal dominant form of hepatic porphyria characterized by attacks of gastrointestinal disturbances, abdominal colic, with neurological dysfunctions, hypertension, tachycardia and peripheral neuropathy. Most attacks are precipitated by drugs, alcohol, caloric deprivation, infections, or endocrine factors. {ECO:0000269 PubMed:10453740, ECO:0000269 PubMed:10494093, ECO:0000269 PubMed:10502788, ECO:0000269 PubMed:10602775, ECO:0000269 PubMed:10657149, ECO:0000269 PubMed:10782018, ECO:0000269 PubMed:11013452, ECO:0000269 PubMed:11030413, ECO:0000269 PubMed:11399210, ECO:0000269 PubMed:11857754, ECO:0000269 PubMed:12372055, ECO:0000269 PubMed:12406973, ECO:0000269 PubMed:1301948, ECO:0000269 PubMed:1427766, ECO:0000269 PubMed:14669009, ECO:0000269 PubMed:1496994, ECO:0000269 PubMed:14970743, ECO:0000269 PubMed:15669678, ECO:0000269 PubMed:1714233, ECO:0000269 PubMed:2243128, ECO:0000269 PubMed:7757070, ECO:0000269 PubMed:7962538, ECO:0000269 PubMed:8081367, ECO:0000269 PubMed:8262523, ECO:0000269 PubMed:8268934, ECO:0000269 PubMed:8270254, ECO:0000269 PubMed:8270256, ECO:0000269 PubMed:8401516, ECO:0000269 PubMed:8825929, ECO:0000269 PubMed:9199558, ECO:0000269 PubMed:9225970, ECO:0000269 PubMed:9463797, ECO:0000269 PubMed:9654202, ECO:0000269 Ref.45}. Note=The disease is caused by mutations affecting the gene represented in this entry.

(29) Novoseek inferred disease relationships for HMBS Gene

Disease -log(P) Hits PubMed IDs
porphyria acute intermittent 97.9 118
porphyria 89.9 7
porphyria hepatic 87.2 9
porphyria variegate 82.5 5
coproporphyria hereditary 80 1

Genatlas disease for HMBS Gene

porphyria,acute,intermittent (AIP),including an erythroid form and a non-erythroid variant

Relevant External Links for HMBS

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
genes like me logo Genes that share disorders with HMBS: view

Publications for HMBS Gene

  1. Molecular basis of acute intermittent porphyria: mutations and polymorphisms in the human hydroxymethylbilane synthase gene. (PMID: 7866402) Astrin K.N. … Desnick R.J. (Hum. Mutat. 1994) 3 4 23
  2. Detection of a high mutation frequency in exon 12 of the porphobilinogen deaminase gene in patients with acute intermittent porphyria. (PMID: 8262523) Mgone C.S. … Connor J.M. (Hum. Genet. 1993) 3 4 23
  3. Detection of eleven mutations causing acute intermittent porphyria using denaturing gradient gel electrophoresis. (PMID: 8270254) Gu X.-F. … Grandchamp B. (Hum. Genet. 1994) 3 4 23
  4. Four mutations in the porphobilinogen deaminase gene in patients with acute intermittent porphyria. (PMID: 8825929) Lundin G. … Anvret M. (J. Med. Genet. 1995) 3 4 23
  5. Identification of a prevalent nonsense mutation (W283X) and two novel mutations in the porphobilinogen deaminase gene of Swiss patients with acute intermittent porphyria. (PMID: 10782018) Schneider-Yin X. … Deybach J.-C. (Hum. Hered. 2000) 3 4 23

Products for HMBS Gene

Sources for HMBS Gene

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