NDLI: LRIG1 protein in human cells and tissues

Content Provider	Springer Nature Link
Author	Nilsson, Jonas Starefeldt, Anna Henriksson, Roger Hedman, Håkan
Copyright Year	2003
Abstract	We have recently cloned the human LRIG1 gene (formerly LIG1). LRIG1 is a predicted integral cell-surface protein showing similarities to Kekkon-1, the Drosophila melanogaster epidermal growth-factor-receptor antagonist . A specific peptide antibody, LRIG1–151, was raised in rabbits and used to study the LRIG1 protein. LRIG1 migrated in denaturing polyacrylamide gel electrophoresis under reducing conditions as two species with apparent molecular weights of 143 kDa and 134 kDa, and as two fragments corresponding to an N-terminal 111-kDa species and a C-terminal 32-kDa species. Under non-reducing conditions, both apparent monomers and apparent higher molecular weight complexes were evident. Immunoblotting analysis of cell-surface-biotinylated lysates and confocal microscopy revealed that LRIG1 was localized to the cell surface in ZR-75 cells expressing endogenous LRIG1 and in COS-7 cells expressing a synthetic LRIG1-GFP fusion protein. Immunohistochemical analysis of normal human tissues showed staining for LRIG1 in epithelia in various organs, scattered neurons, and muscles. Immunoblotting demonstrated LRIG1 protein in tissue lysates from normal human prostate, mammary epithelial cells, ileum, stomach, lung, and cerebral cortex. These results demonstrate that LRIG1 is an integral cell-surface membrane protein that is expressed by specific cells in various human tissues and that its 143-kDa form might be cleaved into 111-kDa and 32-kDa fragments.
Starting Page	65
Ending Page	71
Page Count	7
File Format	PDF
ISSN	0302766X
Journal	Cell and Tissue Research
Volume Number	312
Issue Number	1
e-ISSN	14320878
Language	English
Publisher	Springer-Verlag
Publisher Date	2003-03-18
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Cell Biology Histology Pathology and Forensic Medicine

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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