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== Function ==
== 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 apparatus|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.<ref name="blood">{{cite web|last1=Khoriaty R, Vasievich MP, Ginsburg D.|first1=Blood. 2012 Jul 5;120(1):31-8. doi: 10.1182/blood-2012-01-292086|title=The COPII pathway and hematologic disease.|url=http://www.bloodjournal.org/content/120/1/31?sso-checked=true|website=www.bloodjournal.org|publisher=American Society of Hematology|accessdate=7 April 2017}}</ref><ref name="entrez" /> [[MCFD2]] is the second gene that leads to combined deficiency of factor V-factor VIII.<ref name="pmid12717434">{{cite journal |vauthors=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 | title = Bleeding due to disruption of a cargo-specific ER-to-Golgi transport complex | journal = Nat Genet | volume = 34 | issue = 2 | pages = 220–5 |date=May 2003 | pmid = 12717434 | pmc =  | doi = 10.1038/ng1153 }}</ref> 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,<ref name="pmid15886209">{{cite journal  |vauthors=Zhang B, Kaufman RJ, Ginsburg D |title=LMAN1 and MCFD2 form a cargo receptor complex and interact with coagulation factor VIII in the early secretory pathway |journal=J. Biol. Chem. |volume=280 |issue= 27 |pages= 25881–6 |year= 2005 |pmid= 15886209 |doi= 10.1074/jbc.M502160200 }}</ref>[http://www.bloodjournal.org/content/bloodjournal/120/1/31/F2.large.jpg as illustrated here.]<ref name=blood/>
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 apparatus|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.<ref name="blood">{{cite journal | vauthors = Khoriaty R, Vasievich MP, Ginsburg D | title = The COPII pathway and hematologic disease | journal = Blood | volume = 120 | issue = 1 | pages = 31–8 | date = July 2012 | pmid = 22586181 | pmc = 3390960 | doi = 10.1182/blood-2012-01-292086 }}</ref><ref name="entrez" /> [[MCFD2]] is the second gene that leads to combined deficiency of factor V-factor VIII.<ref name="pmid12717434">{{cite journal |vauthors=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 | title = Bleeding due to disruption of a cargo-specific ER-to-Golgi transport complex | journal = Nat Genet | volume = 34 | issue = 2 | pages = 220–5 |date=May 2003 | pmid = 12717434 | pmc =  | doi = 10.1038/ng1153 }}</ref> 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,<ref name="pmid15886209">{{cite journal  |vauthors=Zhang B, Kaufman RJ, Ginsburg D |title=LMAN1 and MCFD2 form a cargo receptor complex and interact with coagulation factor VIII in the early secretory pathway |journal=J. Biol. Chem. |volume=280 |issue= 27 |pages= 25881–6 |year= 2005 |pmid= 15886209 |doi= 10.1074/jbc.M502160200 }}</ref>[http://www.bloodjournal.org/content/bloodjournal/120/1/31/F2.large.jpg as illustrated here.]<ref name=blood/>


==Clinical significance==
==Clinical significance==

Latest revision as of 09:01, 9 January 2019

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Identifiers
Aliases
External IDsGeneCards: [1]
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

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n/a

RefSeq (protein)

n/a

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Location (UCSC)n/an/a
PubMed searchn/an/a
Wikidata
View/Edit Human

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.[1][2][3]

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.[4][3] MCFD2 is the second gene that leads to combined deficiency of factor V-factor VIII.[5] 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,[6]as illustrated here.[4]

Clinical significance

LMAN1 mutational inactivation is a frequent and early event potentially contributing to colorectal tumorigenesis.[7]

References

  1. 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.
  2. 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.
  3. 3.0 3.1 "Entrez Gene: LMAN1 lectin, mannose-binding, 1".
  4. 4.0 4.1 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.
  5. 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.
  6. 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.
  7. 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