Di Girolamo, Mario et al. published their research in Physiological Chemistry and Physics and Medical NMR in 1984 | CAS: 16310-13-7

Thiazolidine-2-carboxylic acid (cas: 16310-13-7) belongs to thiazolidine derivatives. Thiazolidine motifs are very intriguing heterocyclic five-membered moieties present in diverse natural and bioactive compounds having sulfur at the first position and nitrogen at the third position. Thiazolidines are also used in peptide and protein modification, protein chemical synthesis, as activators to innate immunity and also act as immunostimulating agents.SDS of cas: 16310-13-7

Thiaproline and selenaproline transport in E. coli was written by Di Girolamo, Mario;Cini, Chiara;Busiello, Vincenzo;Coccia, Raffaella;De Marco, Carlo. And the article was included in Physiological Chemistry and Physics and Medical NMR in 1984.SDS of cas: 16310-13-7 This article mentions the following:

The proline transport system in Escherichia coli KL16 was studied. Its Km is 0.5 μM, and this value is not affected by the presence of glucose nor by pH variations in the range 5.5-8. The proline transport is inhibited by β- and γ-thiaproline, and β- and γ-selenaproline, proline isologs with the methylene group in β or in γ position substituted by an S or Se. The inhibition is of the competitive type and pH-dependent. The Ki values show that all isologs have an affinity for the transport system that is much lower than that of proline; selena isologs have lower affinity than thia isologs. In the experiment, the researchers used many compounds, for example, Thiazolidine-2-carboxylic acid (cas: 16310-13-7SDS of cas: 16310-13-7).

Thiazolidine-2-carboxylic acid (cas: 16310-13-7) belongs to thiazolidine derivatives. Thiazolidine motifs are very intriguing heterocyclic five-membered moieties present in diverse natural and bioactive compounds having sulfur at the first position and nitrogen at the third position. Thiazolidines are also used in peptide and protein modification, protein chemical synthesis, as activators to innate immunity and also act as immunostimulating agents.SDS of cas: 16310-13-7

Referemce:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com