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Crystal structure of seleno-l-cystine di-hydro-chloride.

ABSTRACT: Numerous crystal structures are available for the dimeric amino acid cystine. In proteins it is formed by oxidation of the -SH thiol groups of two closely spaced cysteine residues, resulting in the formation of a familiar di-sulfide bridge. The title compound [systematic name: (R,R)-1,1'-dicarb-oxy-2,2'-(diselanedi-yl)diethanaminium dichloride], C6H14N2O4Se2 (2+)·2Cl(-), is the first example of a small mol-ecule structure of the biologically important analogue with a -CH2-Se-Se-CH2- bridging unit. Bond lengths and angles of seleno-l-cystine di-hydro-chloride and its isotypic sulfur analogue l-cystine di-hydro-chloride are compared.

SUBMITTER: Gorbitz CH

PROVIDER: S-EPMC4459342 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature

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Crystal structure of seleno-l-cystine di-hydro-chloride.

Görbitz Carl Henrik CH Levchenko Vladimir V Semjonovs Jevgenijs J Sharif Mohamed Yusuf MY

Acta crystallographica. Section E, Crystallographic communications 20150530 Pt 6

Numerous crystal structures are available for the dimeric amino acid cystine. In proteins it is formed by oxidation of the -SH thiol groups of two closely spaced cysteine residues, resulting in the formation of a familiar di-sulfide bridge. The title compound [systematic name: (R,R)-1,1'-dicarb-oxy-2,2'-(diselanedi-yl)diethanaminium dichloride], C6H14N2O4Se2 (2+)·2Cl(-), is the first example of a small mol-ecule structure of the biologically important analogue with a -CH2-Se-Se-CH2- bridging uni ...[more]

PMID: 26090162

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