Anti-Ribophorin I/RPN-I Antibody

Dolichyl-diphosphooligosaccharide-protein glycosyltransferase subunit 1 (EC 2.4.99.18; UniProt P04843; also known as Dolichyl-diphosphooligosaccharide-protein glycosyltransferase 67 kDa subunit, Ribophorin I, RPN-I, Ribophorin-1) is encoded by the RPN1 gene (Gene ID 6184) in human. Ribophorin I is an ER transmembrane protein and a subunit of the mammalian Oligosaccharyltransferase (OST) complex. Ribophorin I binds newly synthesized target proteins and delivers them to the catalytic core of the OST complex. Association of ribophorin I with newly synthesized membrane proteins was observed after the exit of the nascent chain from the Sec61 translocon, and it was unaffected by the N-glycosylation status. Ribophorin I is reported to preferentially interact with misfolded over native ribonuclease A. In addition, Ribophorin I is shown to complex with another ER protein malectin and enhance malectin′s ability to prevent the secretion of the folding-defective proteins.

Epitope: C-terminus.

KLH-conjugated linear peptide corresponding to the C-terminal sequence of human Ribophorin I/RPN-I.

Research Category
Signaling

Research Sub Category
Organelle & Cell Markers

This Anti-Ribophorin I/RPN-I Antibody is validated for use in Western Blotting for the detection of Ribophorin I.

Western Blotting Analysis: An 1:5,000 dilution from a representative lot detected ribophorin I in in 25 µg of HeLa cell lysate (Courtesy of Dr. Christopher V. Nicchitta, Duke University Medical Center, Durham, NC).
Western Blotting Analysis: A representative lot detected ribophorin I in the alkali-extracted and Triton X-114-selected integral membrane fraction derived from UV-cross-linked canine pancreas rough microsomes (RM) preparation (Jagannathan, S., et al. (2014). J. Biol. Chem. 2014, 289(37):25907-25924).
Western Blotting Analysis: A representative lot detected ribophorin I in both the Brij35-sensitive (BrS) and Brij35-resistant (BrR) fraction of HeLa ER membrfane proteins (Jagannathan, S., et al. (2014). J. Biol. Chem. 2014, 289(37):25907-25924).
Western Blotting Analysis: A representative lot detected ribophorin I associated with the rRNA-free poly(A) messenger ribonucleoproteins (mRNPs) purified by oligo(dT) from UV-cross-linked canine pancreas rough microsomes (RM) preparation (Jagannathan, S., et al. (2014). J. Biol. Chem. 2014, 289(37):25907-25924).
Western Blotting Analysis: A representative lot detected ribophorin I in both the smooth and rough microsomes sub-fractionated from a rat liver microsome preparation (Menon, A.K., et al. (2000). Curr. Biol. 10(5):241-252).
Western Blotting Analysis: A representative lot detected ribophorin I in canine rough microsome (RM) fractions obtained by sucrose gradient centrifugation of digitonin- or DHPC-solubilized canine RM preparation with or without ribosomes stripping by EDTA treatment (Potter, M.D., and Nicchitta, C.V. (2000). J. Biol. Chem. 275(3):2037-2045).

Evaluated by Western Blotting in canine pancreas tissue rough microsome lysate.

Western Blotting Analysis: A 1:500 dilution of this antibody detected Ribophorin I/RPN-I in 2.5 µL of canine pancreas tissue rough microsome lysate.

~68 kDa observed.

Unpurified

Rabbit polyclonal serum with 0.05% sodium azide.

Stable for 1 year at -20°C from date of receipt.
Handling Recommendations: Upon receipt and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance.

Concentration: Please refer to lot specific datasheet.

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.