Gene Gene information from NCBI Gene database.
Entrez ID 3145
Gene name Hydroxymethylbilane synthase
Gene symbol HMBS
Synonyms (NCBI Gene)
ENCEPLENCEPPBG-DPBGDPORCUPS
Chromosome 11
Chromosome location 11q23.3
Summary 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 hydroxymethy
SNPs SNP information provided by dbSNP.
69
SNP ID Visualize variation Clinical significance Consequence
rs34413634 C>T Likely-pathogenic Coding sequence variant, missense variant
rs118204094 C>T Pathogenic Coding sequence variant, missense variant
rs118204095 G>A,T Likely-pathogenic, pathogenic Coding sequence variant, missense variant
rs118204096 G>A Pathogenic Coding sequence variant, missense variant
rs118204097 C>T Pathogenic Coding sequence variant, stop gained
miRNA miRNA information provided by mirtarbase database.
10
miRTarBase ID miRNA Experiments Reference
MIRT050301 hsa-miR-25-3p CLASH 23622248
MIRT1048861 hsa-miR-181a CLIP-seq
MIRT1048862 hsa-miR-181b CLIP-seq
MIRT1048863 hsa-miR-181c CLIP-seq
MIRT1048864 hsa-miR-181d CLIP-seq
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
25
GO ID Ontology Definition Evidence Reference
GO:0004418 Function Hydroxymethylbilane synthase activity IBA
GO:0004418 Function Hydroxymethylbilane synthase activity IDA 18004775, 18936296
GO:0004418 Function Hydroxymethylbilane synthase activity IEA
GO:0004418 Function Hydroxymethylbilane synthase activity TAS 2025226
GO:0005515 Function Protein binding IPI 32296183, 32814053
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
609806 4982 ENSG00000256269
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
P08397
Protein name Porphobilinogen deaminase (PBG-D) (EC 2.5.1.61) (Hydroxymethylbilane synthase) (HMBS) (Pre-uroporphyrinogen synthase)
Protein function As part of the heme biosynthetic pathway, catalyzes the sequential polymerization of four molecules of porphobilinogen to form hydroxymethylbilane, also known as preuroporphyrinogen (PubMed:18004775, PubMed:18936296, PubMed:19138865, PubMed:2381
PDB 3ECR , 3EQ1 , 5M6R , 5M7F , 7AAJ , 7AAK , 7CCX , 7CCY , 7CCZ , 7CD0 , 8PND
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF01379 Porphobil_deam 21 233 Porphobilinogen deaminase, dipyromethane cofactor binding domain Domain
PF03900 Porphobil_deamC 244 322 Porphobilinogen deaminase, C-terminal domain Domain
Tissue specificity TISSUE SPECIFICITY: [Isoform 1]: Is ubiquitously expressed. {ECO:0000269|PubMed:3422427}.; TISSUE SPECIFICITY: [Isoform 2]: Is found only in erythroid cells. {ECO:0000269|PubMed:3422427}.
Sequence
Sequence length 361
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Porphyrin metabolism
Metabolic pathways
Biosynthesis of cofactors
  Heme biosynthesis
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
33
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
Abdominal pain Pathogenic; Likely pathogenic rs1057518886, rs1057518806 RCV000415135
RCV000415138
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Abnormal circulating porphyrin concentration Pathogenic rs1592217625 RCV001003599
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Acute episodes of neuropathic symptoms Likely pathogenic rs1057518806 RCV000415138
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Acute intermittent porphyria Likely pathogenic; Pathogenic rs1946187914, rs1946317952, rs2134885779, rs2134859316, rs1565754452, rs118204095, rs118204103, rs118204094, rs118204096, rs118204097, rs118204098, rs118204099, rs1565758825, rs118204100, rs118204104
View all (46 more)
RCV001332261
RCV001332263
RCV002246365
RCV001786486
RCV001789607
View all (60 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
Acute myeloid leukemia Benign; Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
ANEMIA, SICKLE CELL Disgenet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Cervical cancer Benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Cholangiocarcinoma Benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text Mining Disease associations identified through text mining
Disease Name Disease (Merged) Source PMID Relationship Type Evidence Score
Acute intermittent porphyria Intermittent Porphyria BEFREE 10207164, 10408772, 10416826, 10453740, 10494093, 10502788, 10602775, 10657149, 10667475, 10782018, 10790212, 10944860, 11013452, 11030413, 11055586
View all (143 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Acute intermittent porphyria Intermittent Porphyria UNIPROT_DG 10453740, 10494093, 10502788, 10602775, 10657149, 10782018, 11013452, 11030413, 11399210, 11857754, 12372055, 12406973, 12773194, 1301948, 1427766
View all (27 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Acute intermittent porphyria Intermittent Porphyria LHGDN 11399210, 11831862, 11857754, 11940707, 15669678, 16211556, 16817012, 17298216, 17298217, 18405488, 18627369, 18936296
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Acute intermittent porphyria Intermittent Porphyria CLINVAR_DG 12372055, 26075277, 7962538, 8270256
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Acute intermittent porphyria Intermittent Porphyria Orphanet
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Acute intermittent porphyria Intermittent Porphyria GENOMICS_ENGLAND_DG 27604308
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Acute intermittent porphyria Intermittent Porphyria CTD_human_DG 6132132, 8772850
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Adenoma Adenoma BEFREE 24135907
★☆☆☆☆
Found in Text Mining only
Alzheimer Disease Alzheimer disease Pubtator 19477221 Associate
★☆☆☆☆
Found in Text Mining only
Amyloidosis Amyloidosis BEFREE 27743375
★☆☆☆☆
Found in Text Mining only