Gene Gene information from NCBI Gene database.
Entrez ID 212
Gene name 5'-aminolevulinate synthase 2
Gene symbol ALAS2
Synonyms (NCBI Gene)
ALAS-EALASEANH1ASBSIDBA1XLDPPXLEPPXLSA
Chromosome X
Chromosome location Xp11.21
Summary The product of this gene specifies an erythroid-specific mitochondrially located enzyme. The encoded protein catalyzes the first step in the heme biosynthetic pathway. Defects in this gene cause X-linked pyridoxine-responsive sideroblastic anemia. Alterna
SNPs SNP information provided by dbSNP.
21
SNP ID Visualize variation Clinical significance Consequence
rs28935484 T>A Pathogenic Coding sequence variant, missense variant
rs137852299 A>T Pathogenic Coding sequence variant, missense variant
rs137852300 G>C Pathogenic Coding sequence variant, missense variant
rs137852301 G>T Pathogenic Coding sequence variant, missense variant
rs137852302 C>T Pathogenic Coding sequence variant, missense variant
Transcription factors Transcription factors information provided by TRRUST V2 database.
2
Transcription factor Regulation Reference
GATA1 Unknown 23935018
HIF1A Activation 21207956
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
37
GO ID Ontology Definition Evidence Reference
GO:0001666 Process Response to hypoxia IDA 16234850
GO:0003870 Function 5-aminolevulinate synthase activity IBA
GO:0003870 Function 5-aminolevulinate synthase activity IDA 14643893, 32499479
GO:0003870 Function 5-aminolevulinate synthase activity IEA
GO:0003870 Function 5-aminolevulinate synthase activity IMP 21252495, 21309041, 21653323
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
301300 397 ENSG00000158578
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
P22557
Protein name 5-aminolevulinate synthase, erythroid-specific, mitochondrial (ALAS-E) (EC 2.3.1.37) (5-aminolevulinic acid synthase 2) (Delta-ALA synthase 2) (Delta-aminolevulinate synthase 2)
Protein function Catalyzes the pyridoxal 5'-phosphate (PLP)-dependent condensation of succinyl-CoA and glycine to form aminolevulinic acid (ALA), with CoA and CO2 as by-products (PubMed:14643893, PubMed:21252495, PubMed:21309041, PubMed:21653323, PubMed:32499479
PDB 5QQQ , 5QQR , 5QQS , 5QQT , 5QQU , 5QQV , 5QQW , 5QQX , 5QQY , 5QQZ , 5QR0 , 5QR1 , 5QR2 , 5QR3 , 5QR4 , 5QR5 , 5QR6 , 5QR7 , 5QR8 , 5QR9 , 5QRA , 5QRB , 5QRC , 5QRD , 5QRE , 5QT3 , 6HRH
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF09029 Preseq_ALAS 52 100 5-aminolevulinate synthase presequence Domain
PF00155 Aminotran_1_2 189 536 Aminotransferase class I and II Domain
Tissue specificity TISSUE SPECIFICITY: [Isoform 1]: Erythroid-specific. {ECO:0000269|PubMed:14643893, ECO:0000269|PubMed:2050125}.; TISSUE SPECIFICITY: [Isoform 2]: Erythroid-specific. {ECO:0000269|PubMed:14643893}.; TISSUE SPECIFICITY: [Isoform 3]: Erythroid-specific. {ECO
Sequence
Sequence length 587
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Glycine, serine and threonine metabolism
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.).
22
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
ALAS2-related disorder Pathogenic rs137852311 RCV004730841
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Pancreatic adenocarcinoma Pathogenic rs863223900 RCV005940001
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Sideroblastic anemia 1, late-onset Pathogenic; Likely pathogenic rs137852303, rs137852304 RCV000011218
RCV000011219
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
X-linked erythropoietic protoporphyria Likely pathogenic; Pathogenic rs387906472, rs387906473, rs397514730, rs879255567 RCV000011228
RCV000011229
RCV000054488
RCV000054489
★★★★☆
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 ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
ANEMIA, SIDEROBLASTIC CTD
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
ANEMIA, SIDEROBLASTIC, 1 HPO
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
ANEMIA, SIDEROBLASTIC, 1, LATE-ONSET Disgenet
★★☆☆☆
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 Erythroblastic Leukemia Erythroblastic Leukemia BEFREE 12393745, 23935018
★☆☆☆☆
Found in Text Mining only
Acute intermittent porphyria Intermittent Porphyria BEFREE 23650938
★☆☆☆☆
Found in Text Mining only
Anemia Anemia BEFREE 15885606, 16735131, 17192393, 18760763, 9226183
★☆☆☆☆
Found in Text Mining only
Anemia Anemia Pubtator 7949148 Associate
★☆☆☆☆
Found in Text Mining only
Anemia Anemia HPO_DG
★☆☆☆☆
Found in Text Mining only
Anemia Hemolytic Hemolytic anemia Pubtator 31338833 Associate
★☆☆☆☆
Found in Text Mining only
Anemia Hemolytic Congenital Hemolytic anemia Pubtator 37697358 Associate
★☆☆☆☆
Found in Text Mining only
Anemia hypochromic microcytic Hypochromic microcytic anemia Pubtator 38360212 Associate
★☆☆☆☆
Found in Text Mining only
Anemia Macrocytic Macrocytic anemia Pubtator 25705881 Associate
★☆☆☆☆
Found in Text Mining only
Anemia Refractory Refractory anemia Pubtator 16527891 Stimulate
★☆☆☆☆
Found in Text Mining only