5e5f

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X-ray structure of the complex between RNase A and compound 4-PF6 ([(PPh3)Au(mi-pbi)Pt(Me)(DMSO)][PF6]), the heterobimetallic derivative obtained in the reaction between the organometallic compound [Pt(pbi)(Me)(DMSO)], pbi=2-(2'-pyridil)benzimidazole (compound 3) and the gold(I) compound [Au(Ph3P)][PF6]X-ray structure of the complex between RNase A and compound 4-PF6 ([(PPh3)Au(mi-pbi)Pt(Me)(DMSO)][PF6]), the heterobimetallic derivative obtained in the reaction between the organometallic compound [Pt(pbi)(Me)(DMSO)], pbi=2-(2'-pyridil)benzimidazole (compound 3) and the gold(I) compound [Au(Ph3P)][PF6]

Structural highlights

5e5f is a 2 chain structure with sequence from Bos taurus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.68Å
Ligands:, ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

RNAS1_BOVIN Endonuclease that catalyzes the cleavage of RNA on the 3' side of pyrimidine nucleotides. Acts on single stranded and double stranded RNA.[1]

Publication Abstract from PubMed

A novel platinum(ii) organometallic complex, [Pt(pbi)(Me)(DMSO)], bearing the 2-(2'-pyridyl)-benzimidazole (pbiH) ligand, was synthesized and fully characterized. Interestingly, the reaction of this organometallic platinum(ii) complex with two distinct gold(i) phosphane compounds afforded the corresponding heterobimetallic derivatives with the pbi ligand bridging the two metal centers. The antiproliferative properties in vitro of [Pt(pbi)(Me)(DMSO)] and its gold(i) derivatives as well as those of the known coordination platinum(ii) and palladium(ii) complexes with the same ligand, of the general formula [MCl2(pbiH)], were comparatively evaluated against A2780 cancer cells, either sensitive or resistant to cisplatin. A superior biological activity of the organometallic compound clearly emerged compared to the corresponding platinum(ii) complex; the antiproliferative effects are further enhanced upon attaching the gold(i) triphenylphosphine moiety to the organometallic Pt compound. Remarkably, these novel metal species are able to overcome nearly complete resistance to cisplatin. Significant mechanistic insight into the study compounds was gained after investigating their reactions with a few representative biomolecules by electrospray mass spectrometry and X-ray crystallography. The obtained results are comprehensively discussed.

Cytotoxic properties of a new organometallic platinum(ii) complex and its gold(i) heterobimetallic derivatives.,Serratrice M, Maiore L, Zucca A, Stoccoro S, Landini I, Mini E, Massai L, Ferraro G, Merlino A, Messori L, Cinellu MA Dalton Trans. 2015 Nov 26. PMID:26609781[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. delCardayre SB, Ribo M, Yokel EM, Quirk DJ, Rutter WJ, Raines RT. Engineering ribonuclease A: production, purification and characterization of wild-type enzyme and mutants at Gln11. Protein Eng. 1995 Mar;8(3):261-73. PMID:7479688
  2. Serratrice M, Maiore L, Zucca A, Stoccoro S, Landini I, Mini E, Massai L, Ferraro G, Merlino A, Messori L, Cinellu MA. Cytotoxic properties of a new organometallic platinum(ii) complex and its gold(i) heterobimetallic derivatives. Dalton Trans. 2015 Nov 26. PMID:26609781 doi:http://dx.doi.org/10.1039/c5dt02714d

5e5f, resolution 1.68Å

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