Article · Wikipedia archive · Last revised Jul 4, 2026

Serglycin

Serglycin, also known as hematopoietic proteoglycan core protein or secretory granule proteoglycan core protein, is a protein that in humans is encoded by the SRGN gene. It is primarily expressed in hematopoietic cells and endothelial cells, and is the only known intracellular proteoglycan.

Last revised
Jul 4, 2026
Read time
≈ 5 min
Length
1,141 w
Citations
13
Source
SRGN
Identifiers
AliasesSRGN, PPG, PRG, PRG1, serglycin
External IDsOMIM: 177040; MGI: 97756; HomoloGene: 2043; GeneCards: SRGN; OMA:SRGN - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_002727
NM_001321053
NM_001321054

NM_011157
NM_001358965

RefSeq (protein)

NP_001307982
NP_001307983
NP_002718

NP_035287
NP_001345894

Location (UCSC)Chr 10: 69.09 – 69.1 MbChr 10: 62.33 – 62.36 Mb
PubMed search34
Wikidata
View/Edit HumanView/Edit Mouse

Serglycin, also known as hematopoietic proteoglycan core protein or secretory granule proteoglycan core protein, is a protein that in humans is encoded by the SRGN gene.5 It is primarily expressed in hematopoietic cells and endothelial cells,6 and is the only known intracellular proteoglycan.7

Function

This gene encodes a protein best known as a hematopoietic cell granule proteoglycan. Proteoglycans stored in the secretory granules of many hematopoietic cells also contain a protease-resistant peptide core, which may be important for neutralizing hydrolytic enzymes. This encoded protein was found to be associated with the macromolecular complex of granzymes and perforin, and serves as a scaffold for the granzyme and perforin in granule-mediated apoptosis.58

References

References

  1. GRCh38: Ensembl release 89: ENSG00000122862Ensembl, May 2017
  2. GRCm38: Ensembl release 89: ENSMUSG00000020077Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. "Entrez Gene: SRGN serglycin".
  6. Kolset SO, Tveit H (April 2008). "Serglycin--structure and biology". Cellular and Molecular Life Sciences. 65 (7–8): 1073–85. doi:10.1007/s00018-007-7455-6. PMC 11131666. PMID 18066495. S2CID 19422023.
  7. Iozzo RV, Schaefer L (March 2015). "Proteoglycan form and function: A comprehensive nomenclature of proteoglycans". Matrix Biology. 42: 11–55. doi:10.1016/j.matbio.2015.02.003. PMC 4859157. PMID 25701227.
  8. Metkar SS, Wang B, Aguilar-Santelises M, Raja SM, Uhlin-Hansen L, Podack E, Trapani JA, Froelich CJ (March 2002). "Cytotoxic cell granule-mediated apoptosis: perforin delivers granzyme B-serglycin complexes into target cells without plasma membrane pore formation". Immunity. 16 (3): 417–428. doi:10.1016/s1074-7613(02)00286-8. ISSN 1074-7613. PMID 11911826.
Further reading

Further reading