Aldolase B

ALDOB
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesALDOB, Aldob, Aldo-2, Aldo2, BC016435, ALDB, aldolase, fructose-bisphosphate B
External IDsOMIM: 612724; MGI: 87995; HomoloGene: 20060; GeneCards: ALDOB; OMA:ALDOB - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_000035

NM_144903

RefSeq (protein)

NP_000026

NP_659152

Location (UCSC)Chr 9: 101.42 – 101.45 MbChr 4: 49.54 – 49.55 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Aldolase B also known as fructose-bisphosphate aldolase B or liver-type aldolase is one of three isoenzymes (A, B, and C) of the class I fructose 1,6-bisphosphate aldolase enzyme (EC 4.1.2.13), and plays a key role in both glycolysis and gluconeogenesis. The generic fructose 1,6-bisphosphate aldolase enzyme catalyzes the reversible cleavage of fructose 1,6-bisphosphate (FBP) into glyceraldehyde 3-phosphate and dihydroxyacetone phosphate (DHAP) as well as the reversible cleavage of fructose 1-phosphate (F1P) into glyceraldehyde and dihydroxyacetone phosphate. In mammals, aldolase B is preferentially expressed in the liver, while aldolase A is expressed in muscle and erythrocytes and aldolase C is expressed in the brain. Slight differences in isozyme structure result in different activities for the two substrate molecules: FBP and fructose 1-phosphate. Aldolase B exhibits no preference and thus catalyzes both reactions, while aldolases A and C prefer FBP.[5]

In humans, aldolase B is encoded by the ALDOB gene located on chromosome 9. The gene is 14,500 base pairs long and contains 9 exons.[6][7][8] Defects in this gene have been identified as the cause of hereditary fructose intolerance (HFI).[9]

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000136872Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000028307Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ Dalby AR, Tolan DR, Littlechild JA (November 2001). "The structure of human liver fructose-1,6-bisphosphate aldolase". Acta Crystallogr. D. 57 (Pt 11): 1526–33. doi:10.1107/S0907444901012719. PMID 11679716.
  6. ^ "Entrez Gene: ALDOB aldolase B, fructose-bisphosphate".
  7. ^ Henry I, Gallano P, Besmond C, Weil D, Mattei MG, Turleau C, Boué J, Kahn A, Junien C (July 1985). "The structural gene for aldolase B (ALDB) maps to 9q13----32". Ann. Hum. Genet. 49 (Pt 3): 173–80. doi:10.1111/j.1469-1809.1985.tb01691.x. PMID 3000275. S2CID 10058239.
  8. ^ Tolan DR, Penhoet EE (June 1986). "Characterization of the human aldolase B gene". Mol. Biol. Med. 3 (3): 245–64. PMID 3016456.
  9. ^ Cox TM (January 1994). "Aldolase B and fructose intolerance". FASEB J. 8 (1): 62–71. doi:10.1096/fasebj.8.1.8299892. PMID 8299892. S2CID 39102274.