Biosynthesis of chondroitin sulfate. Microsomal acceptors of sulfate, glucuronic acid, and N-acetylgalactosamine

Biochemistry ◽  
1973 ◽  
Vol 12 (20) ◽  
pp. 3898-3903 ◽  
Author(s):  
Martha E. Richmond ◽  
Silvana DeLuca ◽  
Jeremiah E. Silbert
2019 ◽  
Vol 15 ◽  
pp. 137-144 ◽  
Author(s):  
Teresa Mena-Barragán ◽  
José L de Paz ◽  
Pedro M Nieto

Here, we present an exploratory study on the fluorous-assisted synthesis of chondroitin sulfate (CS) oligosaccharides. Following this approach, a CS tetrasaccharide was prepared. However, in contrast to our previous results, a significant loss of β-selectivity was observed in [2 + 2] glycosylations involving N-trifluoroacetyl-protected D-galactosamine donors and D-glucuronic acid (GlcA) acceptors. These results, together with those obtained from experiments employing model monosaccharide building blocks, highlight the impact of the glycosyl acceptor structure on the stereoselectivity of glycosylation reactions. Our study provides useful data about the substitution pattern of GlcA units for the efficient synthesis of CS oligomers.


2018 ◽  
Vol 183 ◽  
pp. 192-200 ◽  
Author(s):  
Rômulo S. Cavalcante ◽  
Adriana S. Brito ◽  
Lais C.G.F. Palhares ◽  
Marcelo A. Lima ◽  
Renan P. Cavalheiro ◽  
...  

Marine Drugs ◽  
2018 ◽  
Vol 16 (10) ◽  
pp. 389 ◽  
Author(s):  
Nadezhda Ustyuzhanina ◽  
Maria Bilan ◽  
Elena Panina ◽  
Nadezhda Sanamyan ◽  
Andrey Dmitrenok ◽  
...  

Fucosylated chondroitin sulfate CD was isolated from the sea cucumber Cucumaria djakonovi collected from the Avachinsky Gulf of the eastern coast of Kamchatka. Structural characterization of CD was performed using a series of non-destructive NMR spectroscopic procedures. The polysaccharide was shown to contain a chondroitin core [→3)-β-d-GalNAc-(1→4)-β-d-GlcA-(1→]n where about 60% of GlcA residues were 3-O-fucosylated, while another part of GlcA units did not contain any substituents. The presence of unsubstituted both at O-2 and O-3 glucuronic acid residues in a structure of holothurian chondroitin sulfate is unusual and has not been reported previously. Three different fucosyl branches Fucp2S4S, Fucp3S4S and Fucp4S were found in the ratio of 2:1:1. The GalNAc units were mono- or disulfated at positions 4 and 6. Anti-inflammatory activity of CD was assessed on a model of acute peritoneal inflammation in rats. About 45% inhibition was found for CD, while a structurally related linear chondroitin sulfate SS from cartilage of the fish Salmo salar demonstrated only 31% inhibition, indicating that the presence of sulfated fucosyl branches is essential for anti-inflammatory effect of chondroitin sulfates of marine origin.


2007 ◽  
Vol 282 (51) ◽  
pp. 36895-36904 ◽  
Author(s):  
Duriya Fongmoon ◽  
Ajaya Kumar Shetty ◽  
Basappa ◽  
Shuhei Yamada ◽  
Makiko Sugiura ◽  
...  

2002 ◽  
Vol 277 (41) ◽  
pp. 38179-38188 ◽  
Author(s):  
Masanori Gotoh ◽  
Toshikazu Yada ◽  
Takashi Sato ◽  
Tomohiro Akashima ◽  
Hiroko Iwasaki ◽  
...  

1958 ◽  
Vol 108 (4) ◽  
pp. 507-513 ◽  
Author(s):  
Theodore T. Tsaltas

Some biochemical aspects of the collapse of the rabbit ears produced by the intravenous injection of papain have been studied. A marked depletion of chondromucoprotein (M.C.S.) and a reduction of the S35 content of cartilage matrix were found to coincide with the gross and histologic changes in the cartilage. At the same time there was a marked increase in the amount of S35 in the serum and an increase of S35 and glucuronic acid excreted in the urine. Alteration in the composition of the M.C.S. remaining in the cartilage of the papain-injected animals was detected. The findings indicate that the collapse of the rabbit ears is due to loss of chondromucoprotein from cartilage and reduction of chondroitin sulfate in the chondromucoprotein that remains. All these changes were reversed in recovery.


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