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  • Ambarwati, Y  (2)
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  • 1
    Online Resource
    Online Resource
    IOP Publishing ; 2019
    In:  Journal of Physics: Conference Series Vol. 1338, No. 1 ( 2019-10-01), p. 012009-
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 1338, No. 1 ( 2019-10-01), p. 012009-
    Abstract: Chromium(III) complexes have been known to increase insulin absorption and decrease glucose levels in the blood, so Cr(III) complexes can be used as an antidiabetic supplement especially for people with diabetes type 2. The experimentally Cr(III) complexes proven to decrease glucose level, but the role mechanism of Cr(III) complexes in the body until now there is no explain in detail. In this research, the interaction of Cr(III) phenylalanine [Cr(phe) 3 ] with protein tyrosine phosphatase (PTP) was studied by molecular docking. The aims this study was to identify the active site of PTP that binding with those Cr(III) phenylalanine. This research performed by computational calculations Hartree-Fock with basis set 6-31G, the interaction with PTP used the Autodock Vina software. The results showed that [Cr(phe) 3 ] interact with 5 amino acids of PTP, i.e Leu(13), Arg(18), Ser(94), Asp(129) and Tyr(131) with the interaction energy of -6,6 Kcal/mol. The results showed that the interaction Cr(III) phenylalanine with PTP indicate hydrogen bonding with bond leght from 1,8 Å to 2,9 Å.
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 2166409-2
    Location Call Number Limitation Availability
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  • 2
    Online Resource
    Online Resource
    IOP Publishing ; 2021
    In:  Journal of Physics: Conference Series Vol. 1751, No. 1 ( 2021-01-01), p. 012102-
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 1751, No. 1 ( 2021-01-01), p. 012102-
    Abstract: The Chromium(III) compounds have been shown to reduce glucose levels in type 2 diabetics, however, the role of chromium(III) in glucose metabolism cannot be clearly explained. Based on in vitro studies, there are two opinions regarding the mechanism of the role of chromium(III), the first opinion states that the chromium(III) that enters the body directly interacts with protein tyrosine phosphatase (PTP). Second opinion, chromium(III) which enters the body undergoes oxidation to become chromium(VI), and chromium(VI) interacts with PTP. To determine the mechanism that occurs, modeling using chromium(III) picolinate as a chromium(III) complex and chromate ion as chromium(VI) interacts with PTP. The structure optimization compounds was carried out using the Hartree-Fock computation method based on the 6-31G(d). The interaction study was studied using the Autodock Vina and ONIOM methods. The interaction results of chromium(III) picolinate docking interact with Leu(13), Ile(16), Ser(47), Trp(49), Asn(50), and Tyr(131) with interaction energy of - 7.00 kcal.mol −1 . Chromate ion interacts with amino acids Leu(13), Gly(14), Ile(16), Cys(17) and Arg(18) with an interaction energy of -4.10 kcal.mol −1 . The result of interaction energy of chromium(III) picolinate is lower than that of chromate ion, which indicates that the interaction of chromium(III) picolinate with PTP is better than chromate ion.
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2166409-2
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
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