LRIG1

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Identifiers
Aliases
External IDs	GeneCards: [1]
Orthologs
Species	Human	Mouse
Entrez	n/a	n/a
Ensembl	n/a	n/a
UniProt	n/a	n/a
RefSeq (mRNA)	n/a	n/a
RefSeq (protein)	n/a	n/a
Location (UCSC)	n/a	n/a
PubMed search	n/a	n/a
Wikidata
View/Edit Human

Leucine-rich repeats and immunoglobulin-like domains protein 1 is a protein that in humans is encoded by the LRIG1 gene. It encodes a transmembrane protein that has been shown to interact with receptor tyrosine kinases of the EGFR-family , MET and RET.

Model organisms

Lrig1 knockout mouse phenotype

Characteristic	Phenotype
Homozygote viability	Normal
Fertility	Normal
Body weight	Abnormal
Anxiety	Normal
Neurological assessment	Normal
Grip strength	Normal
Hot plate	Normal
Dysmorphology	Abnormal
Indirect calorimetry	Normal
Glucose tolerance test	Normal
Auditory brainstem response	Abnormal
DEXA	Abnormal
Radiography	Abnormal
Body temperature	Normal
Eye morphology	Normal
Clinical chemistry	Abnormal
Plasma immunoglobulins	Normal
Haematology	Normal
Micronucleus test	Normal
Heart weight	Normal
Tail epidermis wholemount	Abnormal
Skin Histopathology	Abnormal
Eye Histopathology	Normal
Salmonella infection	Abnormal
Citrobacter infection	Abnormal
All tests and analysis from

Model organisms have been used in the study of LRIG1 function. A conditional knockout mouse line, called Lrig1^{tm1a(EUCOMM)Wtsi} was generated as part of the International Knockout Mouse Consortium program — a high-throughput mutagenesis project to generate and distribute animal models of disease to interested scientists.

Male and female animals underwent a standardized phenotypic screen to determine the effects of deletion. Twenty five tests were carried out on homozygous mutant mice and ten significant abnormalities were observed, including decreased body weight and total body fat, scaly skin, abnormal hair shedding, a moderate degree of hearing impairment, vertebral fusion, abnormal plasma chemistry and an increased susceptibility to bacterial infection (with both Salmonella and Citrobacter).

Further reading

• Suzuki Y, Sato N, Tohyama M, et al. (1996). "cDNA cloning of a novel membrane glycoprotein that is expressed specifically in glial cells in the mouse brain. LIG-1, a protein with leucine-rich repeats and immunoglobulin-like domains". J. Biol. Chem. 271 (37): 22522–7. doi:10.1074/jbc.271.37.22522. PMID 8798419.
• Suzuki Y, Miura H, Tanemura A, et al. (2002). "Targeted disruption of LIG-1 gene results in psoriasiform epidermal hyperplasia". FEBS Lett. 521 (1–3): 67–71. doi:10.1016/S0014-5793(02)02824-7. PMID 12067728.
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Nilsson J, Starefeldt A, Henriksson R, Hedman H (2004). "LRIG1 protein in human cells and tissues". Cell Tissue Res. 312 (1): 65–71. doi:10.1007/s00441-003-0697-1. PMID 12684867.
• Thomasson M, Hedman H, Guo D, et al. (2003). "LRIG1 and epidermal growth factor receptor in renal cell carcinoma: a quantitative RT–PCR and immunohistochemical analysis". Br. J. Cancer. 89 (7): 1285–9. doi:10.1038/sj.bjc.6601208. PMC 2394322. PMID 14520461.
• Gur G, Rubin C, Katz M, et al. (2005). "LRIG1 restricts growth factor signaling by enhancing receptor ubiquitylation and degradation". EMBO J. 23 (16): 3270–81. doi:10.1038/sj.emboj.7600342. PMC 514515. PMID 15282549.
• Laederich MB, Funes-Duran M, Yen L, et al. (2004). "The leucine-rich repeat protein LRIG1 is a negative regulator of ErbB family receptor tyrosine kinases". J. Biol. Chem. 279 (45): 47050–6. doi:10.1074/jbc.M409703200. PMID 15345710.
• Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The Status, Quality, and Expansion of the NIH Full-Length cDNA Project: The Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
• Ljuslinder I, Malmer B, Golovleva I, et al. (2006). "Increased copy number at 3p14 in breast cancer". Breast Cancer Res. 7 (5): R719–27. doi:10.1186/bcr1279. PMC 1242137. PMID 16168117.
• Jensen KB, Watt FM (2006). "Single-cell expression profiling of human epidermal stem and transit-amplifying cells: Lrig1 is a regulator of stem cell quiescence". Proc. Natl. Acad. Sci. U.S.A. 103 (32): 11958–63. doi:10.1073/pnas.0601886103. PMC 1567680. PMID 16877544.
• Shattuck DL, Miller JK, Laederich M, et al. (2007). "LRIG1 Is a Novel Negative Regulator of the Met Receptor and Opposes Met and Her2 Synergy". Mol. Cell. Biol. 27 (5): 1934–46. doi:10.1128/MCB.00757-06. PMC 1820466. PMID 17178829.