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Hydroxyproline is found in few proteins other than collagen. For this reason, hydroxyproline content has been used as an indicator to determine collagen and/or gelatin amount. However, the mammalian proteins elastin and argonaute 2 have collagen-like domains in which hydroxyproline is formed.
Extensins are a family of flexuous, rodlike, hydroxyproline-rich glycoproteins (HRGPs) of the plant cell wall. [1] [2] They are highly abundant proteins. There are around 20 extensins in Arabidopsis thaliana. They form crosslinked networks in the young cell wall.
In proteins that have segments extending extracellularly, the extracellular segments are also often glycosylated. Glycoproteins are also often important integral membrane proteins, where they play a role in cell–cell interactions. It is important to distinguish endoplasmic reticulum-based glycosylation of the secretory system from reversible ...
Complement proteins are proteins that play a role in the non-specific immune responses alongside these non-specific immune cells to make up the first line of immune defense. [4] The non-specific immune response is an immediate antigen-independent response, however it is not antigen-specific. Non-specific immunity results in no immunologic memory.
The systematic name of this enzyme class is UDP-N-acetyl-D-glucosamine:[Skp1-protein]-hydroxyproline N-acetyl-D-glucosaminyl-transferase. Other names in common use include Skp1-HyPro GlcNAc-transferase , UDP-N-acetylglucosamine (GlcNAc):hydroxyproline polypeptide , GlcNAc-transferase , UDP-GlcNAc:Skp1-hydroxyproline GlcNAc-transferase , and UDP ...
Unlike systemin, it is primarily associated with the cell wall. The precursors to HypSys appear to represent a distinct subfamily of hydroxyproline-rich proteins found in cell walls. Upon wounding it is thought that a protease from the cytosol, the cell wall matrix, or the pathogen, processes the precursor producing active HypSys peptides. [13]
3273 94175 Ensembl ENSG00000113905 ENSMUSG00000022877 UniProt P04196 Q9ESB3 RefSeq (mRNA) NM_000412 NM_053176 RefSeq (protein) NP_000403 NP_444406 Location (UCSC) Chr 3: 186.66 – 186.68 Mb Chr 16: 22.77 – 22.78 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Histidine-rich glycoprotein (HRG) is a glycoprotein that in humans is encoded by the HRG gene. The HRG protein is produced ...
A normal cell will display peptides from normal cellular protein turnover on its class I MHC, and CTLs will not be activated in response to them due to central and peripheral tolerance mechanisms. When a cell expresses foreign proteins, such as after viral infection, a fraction of the class I MHC will display these peptides on the cell surface.