Cysteine Residues

Some articles on cysteine residues, cysteines, residues, cysteine:

Cyclotides - Cyclotide Amino-acid Sequences
... in terms of the backbone segments, or loops, between successive cysteine residues ... The six cysteine residues are absolutely conserved throughout the cyclotide suite and presumably contribute to the preservation of the CCK motif ... Although the cysteines appear essential to maintaining the overall fold, several other residues that are highly conserved in cyclotides are thought to provide additional stability ...
Glycans and Proteins - N-Linked Glycans - Functions and Importance
... such as calnexin and calreticulin, bind to the three glucose residues present on the core N-linked glycan ... Following proper folding, the three glucose residues are removed, and the glycan moves on to further processing reactions ... If the protein fails to fold properly, the three glucose residues are reattached, allowing the protein to re-associate with the chaperones ...
Cysteine - Biological Functions - Roles in Protein Structure
... the translation of messenger RNA molecules to produce polypeptides, cysteine is coded for by the UGU and UGC codons ... Cysteine has traditionally been considered to be a hydrophilic amino acid, based largely on the chemical parallel between its thiol group and the hydroxyl groups in the ... However, the cysteine side chain has been shown to stabilize hydrophobic interactions in micelles to a greater degree than the side chain in the non-polar ...
Clostridium Difficile Toxin B - Structure
... Toxin B has four different structural domains catalytic, cysteine protease, translocation, and receptor binding ... glucosyltransferase catalytic domain includes amino acid residues 1-544 while the cysteine protease domain includes residues 545-801 ... Additionally, the translocation region incorporates amino acid residues from 802-1664 while the receptor binding region is part of the C-terminal region and includes amino acid ...
Thiol - Biological Importance - Cysteine and Cystine
... As the functional group of the amino acid cysteine, the thiol group plays a very important role in biology ... When the thiol groups of two cysteine residues (as in monomers or constituent units) are brought near each other in the course of protein folding, an ... Disulfide bonds can contribute to a protein's tertiary structure if the cysteines are part of the same peptide chain, or contribute to the quaternary structure of multi-unit proteins by forming ...

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