LMAN1

Last updated
LMAN1
Protein LMAN1 PDB 1r1z.png
Available structures
PDB Ortholog search: PDBe RCSB
Identifiers
Aliases LMAN1 , ERGIC-53, ERGIC53, F5F8D, FMFD1, MCFD1, MR60, gp58, lectin, mannose binding 1
External IDs OMIM: 601567; MGI: 1917611; HomoloGene: 4070; GeneCards: LMAN1; OMA:LMAN1 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_005570

NM_001172062
NM_027400

RefSeq (protein)

NP_005561

NP_001165533
NP_081676

Location (UCSC) Chr 18: 59.33 – 59.36 Mb Chr 18: 66.11 – 66.16 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Protein ERGIC-53 also known as ER-Golgi intermediate compartment 53 kDa protein or lectin mannose-binding 1 is a protein that in humans is encoded by the LMAN1 gene. [5] [6] [7]

Function

ERGIC-53 (also named LMAN1) is a type I integral membrane protein localized in the intermediate region (ERGIC) between the endoplasmic reticulum and the Golgi, presumably recycling between the two compartments. The protein is a mannose-specific lectin and is a member of a novel family of plant lectin homologs in the secretory pathway of animal cells. Mutations in the gene are associated with a coagulation defect. Using positional cloning, the gene was identified as the disease gene leading to combined deficiency of factor V-factor VIII, a rare, autosomal recessive disorder in which both coagulation factors V and VIII are diminished. [8] [7] MCFD2 is the second gene that leads to combined deficiency of factor V-factor VIII. [9] ERGIC-53 and MCFD2 form a protein complex and serve as a cargo receptor to transport FV and FVIII from the ER to the ERGIC and then the Golgi, [10] as illustrated here. [8]

Clinical significance

LMAN1 mutational inactivation is a frequent and early event potentially contributing to colorectal tumorigenesis. [11]

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000074695 – Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000041891 – Ensembl, 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. ↑ Nichols WC, Seligsohn U, Zivelin A, Terry VH, Hertel CE, Wheatley MA, Moussalli MJ, Hauri HP, Ciavarella N, Kaufman RJ, Ginsburg D (May 1998). "Mutations in the ER-Golgi intermediate compartment protein ERGIC-53 cause combined deficiency of coagulation factors V and VIII". Cell. 93 (1): 61–70. doi: 10.1016/S0092-8674(00)81146-0 . PMID   9546392. S2CID   15021770.
  6. ↑ Arar C, Mignon C, Mattei M, Monsigny M, Roche A, Legrand A (Feb 1997). "Mapping of the MR60/ERGIC-53 gene to human chromosome 18q21.3-18q22 by in situ hybridization". Mamm Genome. 7 (10): 791–2. doi:10.1007/s003359900238. PMID   8854877. S2CID   19754504.
  7. 1 2 "Entrez Gene: LMAN1 lectin, mannose-binding, 1".
  8. 1 2 Khoriaty R, Vasievich MP, Ginsburg D (July 2012). "The COPII pathway and hematologic disease". Blood. 120 (1): 31–8. doi:10.1182/blood-2012-01-292086. PMC   3390960 . PMID   22586181.
  9. ↑ Zhang B, Cunningham MA, Nichols WC, Bernat JA, Seligsohn U, Pipe SW, McVey JH, Schulte-Overberg U, de Bosch NB, Ruiz-Saez A, White GC, Tuddenham EG, Kaufman RJ, Ginsburg D (May 2003). "Bleeding due to disruption of a cargo-specific ER-to-Golgi transport complex". Nat Genet. 34 (2): 220–5. doi:10.1038/ng1153. PMID   12717434. S2CID   19281158.
  10. ↑ Zhang B, Kaufman RJ, Ginsburg D (2005). "LMAN1 and MCFD2 form a cargo receptor complex and interact with coagulation factor VIII in the early secretory pathway". J. Biol. Chem. 280 (27): 25881–6. doi: 10.1074/jbc.M502160200 . PMID   15886209.
  11. ↑ Roeckel N, Woerner SM, Kloor M, Yuan YP, Patsos G, Gromes R, Kopitz J, Gebert J (January 2009). "High frequency of LMAN1 abnormalities in colorectal tumors with microsatellite instability". Cancer Res. 69 (1): 292–9. doi: 10.1158/0008-5472.CAN-08-3314 . PMID   19118014.

Further reading