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Cystatin C is a non-glycosylated, basic protein (isoelectric point at pH 9.3). The crystal structure of cystatin C is characterized by a short alpha helix and a long alpha helix which lies across a large antiparallel, five-stranded beta sheet. Like other type 2 cystatins, it has two disulfide bonds.
The functions of the kidney include maintenance of acid-base balance; regulation of fluid balance; regulation of sodium, potassium, and other electrolytes; clearance of toxins; absorption of glucose, amino acids, and other small molecules; regulation of blood pressure; production of various hormones, such as erythropoietin; and activation of vitamin D.
Pores in one of the structures of the glomerular filtration barrier. Shrunken pore syndrome (SPS) is a kidney disorder described in 2015 in which the pores in the glomerular filtration barrier are hypothesized to have shrunken so that the glomerular filtration rate (GFR) of 5–30 kDa proteins, for example cystatin C, is selectively reduced compared to that of small molecules (less than 5 kDa ...
One of these is cystatin C, a ubiquitous protein secreted by most cells in the body (it is an inhibitor of cysteine protease). [14] Cystatin C is freely filtered at the glomerulus. After filtration, Cystatin C is reabsorbed and catabolized by the tubular epithelial cells, with only small amounts excreted in the urine.
Hereditary cystatin C amyloid angiopathy (HCCAA) is a rare, fatal type of hereditary cerebral amyloid angiopathy found almost exclusively in Iceland. A mutation in the protein cystatin C leads to amyloid (protein aggregate) dispositions in arteries in the brain, resulting in repeated brain hemorrhages .
n/a Ensembl ENSG00000170369 n/a UniProt P09228 n/a RefSeq (mRNA) NM_001322 n/a RefSeq (protein) NP_001313 n/a Location (UCSC) Chr 20: 23.82 – 23.83 Mb n/a PubMed search n/a Wikidata View/Edit Human Cystatin-SA is a protein that in humans is encoded by the CST2 gene. The cystatin superfamily encompasses proteins that contain multiple cystatin-like sequences. Some of the members are active ...
Interpretation [ edit ] In the United States and in most European countries creatinine is usually reported in m g / d L , whereas in Canada, Australia, [ 23 ] and a few European countries, such as the UK, μ mol / L is the usual unit.
Levey is known for developing the most widely used equations to estimate GFR (renal function) globally.He pioneered work with the MDRD Study Equation, [1] led the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI), which pooled measured kidney function CKD data from studies all over the world to develop equations to estimate kidney function from serum creatinine, cystatin C, and ...