Dimitrijević, Blagoje P.

Link to this page

Authority KeyName Variants
deddbe36-1583-48af-a335-b9d36c5c74b8
  • Dimitrijević, Blagoje P. (4)
Projects

Author's Bibliography

The effect of the intensity of parasitic infection with Strongyloides papillosus and albendazole therapy on biochemical parameters in sheep blood

Dimitrijević, Blagoje P.; Borozan, Sunčica; Jović, Slavoljub; Bacić, Dragan; Katić-Radivojević, Sofija; Stojanović, Srđan; Savić, Mila

(Veterinary Faculty, Univ Beogradu, Belgrade, 2013)

TY  - JOUR
AU  - Dimitrijević, Blagoje P.
AU  - Borozan, Sunčica
AU  - Jović, Slavoljub
AU  - Bacić, Dragan
AU  - Katić-Radivojević, Sofija
AU  - Stojanović, Srđan
AU  - Savić, Mila
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1157
AB  - The aim of this report was to study the biochemical parameters in sheep blood under conditions of various intensities of parasitic infection with Strongyloides papillosus, as well as after therapy with albendazole (ABZ). Investigations were performed on sheep of the Würtemberg race (n = 30) in which were detected mild, moderate and high intensities of parasitic infection with S. papillosus. The control group (n = 10) was composed of sheep negative to parasitic infections. The degree and type of changes were monitored by determining the concentrations of glucose, total proteins, albumin, A/G ratio, AST, urea, total bilirubin, calcium, phosphorus, total LDH activity and isoenzymatic LDH1-5 distributions. On the basis of the obtained results, we determined, through isoenzymatic LDH distribution, that during parasitic infection with S. papillosus, there is ongoing damage to the liver, heart muscle and lung, while after therapy with ABZ, the liver suffers the most damage. The concentration of glucose, total proteins and albumin fell linearly with the rise in the intensity of parasitic infection (p LT 0.05), while after therapy with ABZ, the fall of these parameters was at a statistically significantly higher level (p LT 0.01). The activity of AST, concentration of urea and total bilirubin also rose linearly with the intensity of parasitic infection (p LT 0.05). After therapy with ABZ, the activity of AST and the concentration of total bilirubin were at a statistically significantly higher level (p LT 0.001), while the concentration of urea retained the same levels as in the case of parasitic infection. Values of calcium concentrations (p>0.05) and phosphorus (p LT 0.05) also fall linearly with the rise of the intesity of the parasitic infection. The trend in the concentration fall of these macroelements, continues also after treatment with albendazole (p LT 0.001). Having in mind our previous studies in the field of oxidative stress and phenomena lying behind these changes, we strongly recommend that in antiparasitic treatment protocols, beside antihelminthics, compounds with antioxidative properties should also be used.
AB  - Cilj ovog rada je bio da se ispitaju biohemijski parametri u krvi ovaca u uslovima različitog intenziteta parazitske infekcije sa Strongyloides papillosus, kao i nakon terapije sa albendazolom (ABZ). Istraživanje je izvedeno na ovcama Wurtemberg rase (n = 30) kod kojih je utvrđen blagi, srednji i visoki intenzitet parazitske infekcije sa S. papillosus. Kontrolnu grupu (n = 10) činile su ovce negativne na prisustvo parazitske infekcije. Stepen i vrsta promene praćeni su određivanjem koncentracije glukoze, ukupnih proteina, albumina, A/G ratio, AST, urea, ukupnog bilirubina, kalcijuma, fosfora, ukupne aktivnosti LDH i izoenzimske distribucije LDH1-5. Na osnovu dobijenih rezultata utvrdili smo, preko izoenzimske distribucije LDH, da u toku parazitske infekcije sa S. papillosus dolazi do oštećenja jetre, srčanog mišića i pluća, dok nakon terapije sa ABZ jetra je organ koji je najviše oštećen. Koncentracija glukoze, ukupnih proteina i albumina linearno je opadala sa rastom intenziteta parazitske infekcije (p LT 0.05), a nakon terapije sa ABZ pad koncentracije ovih parametara bio je na statistički značajnom većem nivou (p LT 0.01). Aktivnost AST, koncentracija uree i ukupnog bilirubina takođe su linearno rasle sa intenzitetom parazitske infekcije (p LT 0.05). Nakon terapije sa ABZ aktivnost AST i koncentracija ukupnog bilirubina bile su na statistički značajno većem nivou (p LT 0.001), dok je koncentracija uree zadržala iste nivoe kao u slučaju parazitske infekcije. Vrednosti koncentracija kalcijuma (p > 0.05) i fosfora (p LT 0.05) takođe linearno opadaju sa rastom intenziteta parazitske infekcije. Trend pada koncentracije ovih makroelemenata, nastavlja se i nakon terapije sa albendazolom (p LT 0.001). Imajući u vidu naša prethodna istraživanja na polju oksidativnog stresa, fenomena koji se nalazi u osnovi ovih promena, strogo preporučujemo da se u antiparazitske protokole, pored antihelmintika koriste i preparati sa antioksidativnim osobinama.
PB  - Veterinary Faculty, Univ Beogradu, Belgrade
T2  - Acta veterinaria
T1  - The effect of the intensity of parasitic infection with Strongyloides papillosus and albendazole therapy on biochemical parameters in sheep blood
T1  - Uticaj intenziteta parazitske infekcije sa Strongyloides papillosus i terapije albendazolom na biohemijske parametre u krvi ovaca
VL  - 63
IS  - 5-6
SP  - 581
EP  - 600
DO  - 10.2298/AVB1306581D
ER  - 
@article{
author = "Dimitrijević, Blagoje P. and Borozan, Sunčica and Jović, Slavoljub and Bacić, Dragan and Katić-Radivojević, Sofija and Stojanović, Srđan and Savić, Mila",
year = "2013",
abstract = "The aim of this report was to study the biochemical parameters in sheep blood under conditions of various intensities of parasitic infection with Strongyloides papillosus, as well as after therapy with albendazole (ABZ). Investigations were performed on sheep of the Würtemberg race (n = 30) in which were detected mild, moderate and high intensities of parasitic infection with S. papillosus. The control group (n = 10) was composed of sheep negative to parasitic infections. The degree and type of changes were monitored by determining the concentrations of glucose, total proteins, albumin, A/G ratio, AST, urea, total bilirubin, calcium, phosphorus, total LDH activity and isoenzymatic LDH1-5 distributions. On the basis of the obtained results, we determined, through isoenzymatic LDH distribution, that during parasitic infection with S. papillosus, there is ongoing damage to the liver, heart muscle and lung, while after therapy with ABZ, the liver suffers the most damage. The concentration of glucose, total proteins and albumin fell linearly with the rise in the intensity of parasitic infection (p LT 0.05), while after therapy with ABZ, the fall of these parameters was at a statistically significantly higher level (p LT 0.01). The activity of AST, concentration of urea and total bilirubin also rose linearly with the intensity of parasitic infection (p LT 0.05). After therapy with ABZ, the activity of AST and the concentration of total bilirubin were at a statistically significantly higher level (p LT 0.001), while the concentration of urea retained the same levels as in the case of parasitic infection. Values of calcium concentrations (p>0.05) and phosphorus (p LT 0.05) also fall linearly with the rise of the intesity of the parasitic infection. The trend in the concentration fall of these macroelements, continues also after treatment with albendazole (p LT 0.001). Having in mind our previous studies in the field of oxidative stress and phenomena lying behind these changes, we strongly recommend that in antiparasitic treatment protocols, beside antihelminthics, compounds with antioxidative properties should also be used., Cilj ovog rada je bio da se ispitaju biohemijski parametri u krvi ovaca u uslovima različitog intenziteta parazitske infekcije sa Strongyloides papillosus, kao i nakon terapije sa albendazolom (ABZ). Istraživanje je izvedeno na ovcama Wurtemberg rase (n = 30) kod kojih je utvrđen blagi, srednji i visoki intenzitet parazitske infekcije sa S. papillosus. Kontrolnu grupu (n = 10) činile su ovce negativne na prisustvo parazitske infekcije. Stepen i vrsta promene praćeni su određivanjem koncentracije glukoze, ukupnih proteina, albumina, A/G ratio, AST, urea, ukupnog bilirubina, kalcijuma, fosfora, ukupne aktivnosti LDH i izoenzimske distribucije LDH1-5. Na osnovu dobijenih rezultata utvrdili smo, preko izoenzimske distribucije LDH, da u toku parazitske infekcije sa S. papillosus dolazi do oštećenja jetre, srčanog mišića i pluća, dok nakon terapije sa ABZ jetra je organ koji je najviše oštećen. Koncentracija glukoze, ukupnih proteina i albumina linearno je opadala sa rastom intenziteta parazitske infekcije (p LT 0.05), a nakon terapije sa ABZ pad koncentracije ovih parametara bio je na statistički značajnom većem nivou (p LT 0.01). Aktivnost AST, koncentracija uree i ukupnog bilirubina takođe su linearno rasle sa intenzitetom parazitske infekcije (p LT 0.05). Nakon terapije sa ABZ aktivnost AST i koncentracija ukupnog bilirubina bile su na statistički značajno većem nivou (p LT 0.001), dok je koncentracija uree zadržala iste nivoe kao u slučaju parazitske infekcije. Vrednosti koncentracija kalcijuma (p > 0.05) i fosfora (p LT 0.05) takođe linearno opadaju sa rastom intenziteta parazitske infekcije. Trend pada koncentracije ovih makroelemenata, nastavlja se i nakon terapije sa albendazolom (p LT 0.001). Imajući u vidu naša prethodna istraživanja na polju oksidativnog stresa, fenomena koji se nalazi u osnovi ovih promena, strogo preporučujemo da se u antiparazitske protokole, pored antihelmintika koriste i preparati sa antioksidativnim osobinama.",
publisher = "Veterinary Faculty, Univ Beogradu, Belgrade",
journal = "Acta veterinaria",
title = "The effect of the intensity of parasitic infection with Strongyloides papillosus and albendazole therapy on biochemical parameters in sheep blood, Uticaj intenziteta parazitske infekcije sa Strongyloides papillosus i terapije albendazolom na biohemijske parametre u krvi ovaca",
volume = "63",
number = "5-6",
pages = "581-600",
doi = "10.2298/AVB1306581D"
}
Dimitrijević, B. P., Borozan, S., Jović, S., Bacić, D., Katić-Radivojević, S., Stojanović, S.,& Savić, M.. (2013). The effect of the intensity of parasitic infection with Strongyloides papillosus and albendazole therapy on biochemical parameters in sheep blood. in Acta veterinaria
Veterinary Faculty, Univ Beogradu, Belgrade., 63(5-6), 581-600.
https://doi.org/10.2298/AVB1306581D
Dimitrijević BP, Borozan S, Jović S, Bacić D, Katić-Radivojević S, Stojanović S, Savić M. The effect of the intensity of parasitic infection with Strongyloides papillosus and albendazole therapy on biochemical parameters in sheep blood. in Acta veterinaria. 2013;63(5-6):581-600.
doi:10.2298/AVB1306581D .
Dimitrijević, Blagoje P., Borozan, Sunčica, Jović, Slavoljub, Bacić, Dragan, Katić-Radivojević, Sofija, Stojanović, Srđan, Savić, Mila, "The effect of the intensity of parasitic infection with Strongyloides papillosus and albendazole therapy on biochemical parameters in sheep blood" in Acta veterinaria, 63, no. 5-6 (2013):581-600,
https://doi.org/10.2298/AVB1306581D . .
4
3
4

Cation-pi interactions in high resolution protein-RNA complex crystal structures

Borozan, Sunčica; Dimitrijević, Blagoje P.; Stojanović, Srđan

(Elsevier Sci Ltd, Oxford, 2013)

TY  - JOUR
AU  - Borozan, Sunčica
AU  - Dimitrijević, Blagoje P.
AU  - Stojanović, Srđan
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1247
AB  - In this work, we have analyzed the influence of cation-pi interactions to the stability of 59 high resolution protein-RNA complex crystal structures. The total number of Lys and Arg are similar in the dataset as well as the number of their interactions. On the other hand, the aromatic chains of purines are exhibiting more cation-pi interactions than pyrimidines. 35% of the total interactions in the dataset are involved in the formation of multiple cation-pi interactions. The multiple cation-pi interactions have been conserved more than the single interactions. The analysis of the geometry of the cation-pi interactions has revealed that the average distance (d) value falls into distinct ranges corresponding to the multiple (4.28 angstrom) and single (5.50 angstrom) cation-pi interactions. The G-Arg pair has the strongest interaction energy of -3.68 kcal mol(-1) among all the possible pairs of amino acids and bases. Further, we found that the cation-pi interactions due to five-membered rings of A and G are stronger than that with the atoms in six-membered rings. 8.7% stabilizing residues are involved in building cation-pi interactions with the nucleic bases. There are three types of structural motifs significantly over-represented in protein-RNA interfaces: beta-turn-ir, niche-4r and st-staple. Tetraloops and kink-turns are the most abundant RNA motifs in protein-RNA interfaces. Amino acids deployed in the protein-RNA interfaces are deposited in helices, sheets and coils. Arg and Lys, involved in cation-pi interactions, prefer to be in the solvent exposed surface. The results from this study might be used for structure-based prediction and as scaffolds for future protein-RNA complex design.
PB  - Elsevier Sci Ltd, Oxford
T2  - Computational Biology and Chemistry
T1  - Cation-pi interactions in high resolution protein-RNA complex crystal structures
VL  - 47
SP  - 105
EP  - 112
DO  - 10.1016/j.compbiolchem.2013.08.005
ER  - 
@article{
author = "Borozan, Sunčica and Dimitrijević, Blagoje P. and Stojanović, Srđan",
year = "2013",
abstract = "In this work, we have analyzed the influence of cation-pi interactions to the stability of 59 high resolution protein-RNA complex crystal structures. The total number of Lys and Arg are similar in the dataset as well as the number of their interactions. On the other hand, the aromatic chains of purines are exhibiting more cation-pi interactions than pyrimidines. 35% of the total interactions in the dataset are involved in the formation of multiple cation-pi interactions. The multiple cation-pi interactions have been conserved more than the single interactions. The analysis of the geometry of the cation-pi interactions has revealed that the average distance (d) value falls into distinct ranges corresponding to the multiple (4.28 angstrom) and single (5.50 angstrom) cation-pi interactions. The G-Arg pair has the strongest interaction energy of -3.68 kcal mol(-1) among all the possible pairs of amino acids and bases. Further, we found that the cation-pi interactions due to five-membered rings of A and G are stronger than that with the atoms in six-membered rings. 8.7% stabilizing residues are involved in building cation-pi interactions with the nucleic bases. There are three types of structural motifs significantly over-represented in protein-RNA interfaces: beta-turn-ir, niche-4r and st-staple. Tetraloops and kink-turns are the most abundant RNA motifs in protein-RNA interfaces. Amino acids deployed in the protein-RNA interfaces are deposited in helices, sheets and coils. Arg and Lys, involved in cation-pi interactions, prefer to be in the solvent exposed surface. The results from this study might be used for structure-based prediction and as scaffolds for future protein-RNA complex design.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Computational Biology and Chemistry",
title = "Cation-pi interactions in high resolution protein-RNA complex crystal structures",
volume = "47",
pages = "105-112",
doi = "10.1016/j.compbiolchem.2013.08.005"
}
Borozan, S., Dimitrijević, B. P.,& Stojanović, S.. (2013). Cation-pi interactions in high resolution protein-RNA complex crystal structures. in Computational Biology and Chemistry
Elsevier Sci Ltd, Oxford., 47, 105-112.
https://doi.org/10.1016/j.compbiolchem.2013.08.005
Borozan S, Dimitrijević BP, Stojanović S. Cation-pi interactions in high resolution protein-RNA complex crystal structures. in Computational Biology and Chemistry. 2013;47:105-112.
doi:10.1016/j.compbiolchem.2013.08.005 .
Borozan, Sunčica, Dimitrijević, Blagoje P., Stojanović, Srđan, "Cation-pi interactions in high resolution protein-RNA complex crystal structures" in Computational Biology and Chemistry, 47 (2013):105-112,
https://doi.org/10.1016/j.compbiolchem.2013.08.005 . .
12
11
12

Effects of infection intensity with Strongyloides papillosus and albendazole treatment on development of oxidative/nitrosative stress in sheep

Dimitrijević, Blagoje P.; Borozan, Sunčica; Katic-Radivojevic, Sofija; Stojanović, Srđan

(Elsevier, 2012)

TY  - JOUR
AU  - Dimitrijević, Blagoje P.
AU  - Borozan, Sunčica
AU  - Katic-Radivojevic, Sofija
AU  - Stojanović, Srđan
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/944
AB  - The objective of this study was to estimate and evaluate oxidative/nitrosative stress parameters in sheep infected with Strongyloides papillosus and after antihelminthic treatment with albendazole (ABZ). This parasite, especially during development stages can seriously damage parenchaematous organs during migration within the host. The presence of parasites leads to increased productions of reactive oxygen species (ROS) and reactive nitrogen species (RNS). It is also well known that certain drugs can be very harmful for the delicate oxidant-antioxidant equilibrium, provoking oxidative stress during their biotransformation. ABZ is a broad spectrum antihelminthic drug, frequently used in veterinary medicine for therapy of parasitic infections. The current research was performed on female Wurttemberg sheep (n = 48). The distribution of parasites in sheep was evaluated using the native smear coprological technique, by sedimentation and flotation methods, revealing the presence of S. papillosus. The degree of infection intensity per sheep was quantitatively established by the method of McMaster, the animals having been divided into three groups according to the intensity of infection; mild, moderate and high. The control group consisted of sheep negative to the parasites. After determining the type of parasite infection, the sheep were treated with ABZ, per orally, in single doses of 5 mg/kg per body weight. Sampling of feces for parasitological and blood for biochemical assaying was performed on the 0 and 21st day after treatment with ABZ. The oxidative stress parameters were measured for catalase activity (CAT), the red cell membrane damage by level of malondialdehyde (MDA), while carbonyl and thiol plasma protein group concentrations were used as indicators of the degree of protein oxidative modification. The activity of Cu,Zn-superoxide dismutase (SOD) and relative distribution of lactate dehydrogenase (LDH1-LDH5) activity were determined electrophoretically. The distribution of LDH isoenzymes in sheep moderately and highly infected with S. papillosus revealed that the parasite induced damage to the myocardial (LDH2), lung (LDH3) and liver cells (LDH5) in infected animals, while ABZ treatment only damaged liver cells (LDH5). The MDA concentration revealed that lipid peroxidation increased both in the presence of parasites and the antihelminthic formulation tested (p  LT  0.001) when compared to the control sheep, while the increase of carbonyl concentration (p  LT  0.001), as well as the observed decrease of thiol concentration (p  LT  0.001) indicated significant oxidative damage of plasma proteins in experimental sheep, when compared to the control animals. Our results indicate that S. papillosus induces oxidative/nitrosative stress in sheep. The antihelminthic treatment with ABZ further promotes the disbalance of oxidative-antioxidative equilibrium in all tested sheep.
PB  - Elsevier
T2  - Veterinary Parasitology
T1  - Effects of infection intensity with Strongyloides papillosus and albendazole treatment on development of oxidative/nitrosative stress in sheep
VL  - 186
IS  - 3-4
SP  - 364
EP  - 375
DO  - 10.1016/j.vetpar.2011.11.017
ER  - 
@article{
author = "Dimitrijević, Blagoje P. and Borozan, Sunčica and Katic-Radivojevic, Sofija and Stojanović, Srđan",
year = "2012",
abstract = "The objective of this study was to estimate and evaluate oxidative/nitrosative stress parameters in sheep infected with Strongyloides papillosus and after antihelminthic treatment with albendazole (ABZ). This parasite, especially during development stages can seriously damage parenchaematous organs during migration within the host. The presence of parasites leads to increased productions of reactive oxygen species (ROS) and reactive nitrogen species (RNS). It is also well known that certain drugs can be very harmful for the delicate oxidant-antioxidant equilibrium, provoking oxidative stress during their biotransformation. ABZ is a broad spectrum antihelminthic drug, frequently used in veterinary medicine for therapy of parasitic infections. The current research was performed on female Wurttemberg sheep (n = 48). The distribution of parasites in sheep was evaluated using the native smear coprological technique, by sedimentation and flotation methods, revealing the presence of S. papillosus. The degree of infection intensity per sheep was quantitatively established by the method of McMaster, the animals having been divided into three groups according to the intensity of infection; mild, moderate and high. The control group consisted of sheep negative to the parasites. After determining the type of parasite infection, the sheep were treated with ABZ, per orally, in single doses of 5 mg/kg per body weight. Sampling of feces for parasitological and blood for biochemical assaying was performed on the 0 and 21st day after treatment with ABZ. The oxidative stress parameters were measured for catalase activity (CAT), the red cell membrane damage by level of malondialdehyde (MDA), while carbonyl and thiol plasma protein group concentrations were used as indicators of the degree of protein oxidative modification. The activity of Cu,Zn-superoxide dismutase (SOD) and relative distribution of lactate dehydrogenase (LDH1-LDH5) activity were determined electrophoretically. The distribution of LDH isoenzymes in sheep moderately and highly infected with S. papillosus revealed that the parasite induced damage to the myocardial (LDH2), lung (LDH3) and liver cells (LDH5) in infected animals, while ABZ treatment only damaged liver cells (LDH5). The MDA concentration revealed that lipid peroxidation increased both in the presence of parasites and the antihelminthic formulation tested (p  LT  0.001) when compared to the control sheep, while the increase of carbonyl concentration (p  LT  0.001), as well as the observed decrease of thiol concentration (p  LT  0.001) indicated significant oxidative damage of plasma proteins in experimental sheep, when compared to the control animals. Our results indicate that S. papillosus induces oxidative/nitrosative stress in sheep. The antihelminthic treatment with ABZ further promotes the disbalance of oxidative-antioxidative equilibrium in all tested sheep.",
publisher = "Elsevier",
journal = "Veterinary Parasitology",
title = "Effects of infection intensity with Strongyloides papillosus and albendazole treatment on development of oxidative/nitrosative stress in sheep",
volume = "186",
number = "3-4",
pages = "364-375",
doi = "10.1016/j.vetpar.2011.11.017"
}
Dimitrijević, B. P., Borozan, S., Katic-Radivojevic, S.,& Stojanović, S.. (2012). Effects of infection intensity with Strongyloides papillosus and albendazole treatment on development of oxidative/nitrosative stress in sheep. in Veterinary Parasitology
Elsevier., 186(3-4), 364-375.
https://doi.org/10.1016/j.vetpar.2011.11.017
Dimitrijević BP, Borozan S, Katic-Radivojevic S, Stojanović S. Effects of infection intensity with Strongyloides papillosus and albendazole treatment on development of oxidative/nitrosative stress in sheep. in Veterinary Parasitology. 2012;186(3-4):364-375.
doi:10.1016/j.vetpar.2011.11.017 .
Dimitrijević, Blagoje P., Borozan, Sunčica, Katic-Radivojevic, Sofija, Stojanović, Srđan, "Effects of infection intensity with Strongyloides papillosus and albendazole treatment on development of oxidative/nitrosative stress in sheep" in Veterinary Parasitology, 186, no. 3-4 (2012):364-375,
https://doi.org/10.1016/j.vetpar.2011.11.017 . .
23
18
23

pi-pi and cation-pi interactions in protein-porphyrin complex crystal structures

Dimitrijević, Blagoje P.; Borozan, Sunčica; Stojanović, Srđan

(The Royal Society of Chemistry, 2012)

TY  - JOUR
AU  - Dimitrijević, Blagoje P.
AU  - Borozan, Sunčica
AU  - Stojanović, Srđan
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1119
AB  - In this study we have described the pi-pi and cation-pi interactions between the porphyrin ring and the protein part of porphyrin-containing proteins to better understand their stabilizing role. The number of pi-pi interactions was higher than that of cation-pi interactions in the same set of proteins studied. The pyrrole groups of one porphyrin can be involved in pi-pi interactions with pi systems of another porphyrin in the protein. We have found 5.1% cation-pi interactions between porphyrin Fe2+ metal cations and pi systems of surrounding amino acids as well as the pyrrole rings of other porphyrins. We observed that most of the pi-pi interactions have an energy in the range -0.5 to -2.0 kcal mol(-1), while the cation-pi interactions showed an energy in the range 22 to -4 kcal mol(-1). Further, an appreciable number of metal/cation-pi interaction pairs have an energy in the range -6 to -13 kcal mol(-1). The preferred parallel-stacked orientation is found to be more stable than a T-shaped structure for the full set of pi-pi interaction pairs. In the case of cation-pi interactions, it was found that 44% of the cation-pi interactions involved planar stacking, 37% of the interactions belonged to the oblique category, and the remaining 19% of the interactions were of the orthogonal type. The separation distance between the cation group and the aromatic ring decreases as the interplanar angle decreases. Furthermore, in the present study we have found that 10.4% of pi residues and 3.9% of cationic residues were found to have one or more stabilization centers. Amino acids deployed in the environment of porphyrin rings are deposited in helices and coils. The results from this study might be used for structure-based porphyrin protein prediction and as scaffolds for future porphyrin-containing protein design.
PB  - The Royal Society of Chemistry
T2  - RSC Advances
T1  - pi-pi and cation-pi interactions in protein-porphyrin complex crystal structures
VL  - 2
IS  - 33
SP  - 12963
EP  - 12972
DO  - 10.1039/c2ra21937a
ER  - 
@article{
author = "Dimitrijević, Blagoje P. and Borozan, Sunčica and Stojanović, Srđan",
year = "2012",
abstract = "In this study we have described the pi-pi and cation-pi interactions between the porphyrin ring and the protein part of porphyrin-containing proteins to better understand their stabilizing role. The number of pi-pi interactions was higher than that of cation-pi interactions in the same set of proteins studied. The pyrrole groups of one porphyrin can be involved in pi-pi interactions with pi systems of another porphyrin in the protein. We have found 5.1% cation-pi interactions between porphyrin Fe2+ metal cations and pi systems of surrounding amino acids as well as the pyrrole rings of other porphyrins. We observed that most of the pi-pi interactions have an energy in the range -0.5 to -2.0 kcal mol(-1), while the cation-pi interactions showed an energy in the range 22 to -4 kcal mol(-1). Further, an appreciable number of metal/cation-pi interaction pairs have an energy in the range -6 to -13 kcal mol(-1). The preferred parallel-stacked orientation is found to be more stable than a T-shaped structure for the full set of pi-pi interaction pairs. In the case of cation-pi interactions, it was found that 44% of the cation-pi interactions involved planar stacking, 37% of the interactions belonged to the oblique category, and the remaining 19% of the interactions were of the orthogonal type. The separation distance between the cation group and the aromatic ring decreases as the interplanar angle decreases. Furthermore, in the present study we have found that 10.4% of pi residues and 3.9% of cationic residues were found to have one or more stabilization centers. Amino acids deployed in the environment of porphyrin rings are deposited in helices and coils. The results from this study might be used for structure-based porphyrin protein prediction and as scaffolds for future porphyrin-containing protein design.",
publisher = "The Royal Society of Chemistry",
journal = "RSC Advances",
title = "pi-pi and cation-pi interactions in protein-porphyrin complex crystal structures",
volume = "2",
number = "33",
pages = "12963-12972",
doi = "10.1039/c2ra21937a"
}
Dimitrijević, B. P., Borozan, S.,& Stojanović, S.. (2012). pi-pi and cation-pi interactions in protein-porphyrin complex crystal structures. in RSC Advances
The Royal Society of Chemistry., 2(33), 12963-12972.
https://doi.org/10.1039/c2ra21937a
Dimitrijević BP, Borozan S, Stojanović S. pi-pi and cation-pi interactions in protein-porphyrin complex crystal structures. in RSC Advances. 2012;2(33):12963-12972.
doi:10.1039/c2ra21937a .
Dimitrijević, Blagoje P., Borozan, Sunčica, Stojanović, Srđan, "pi-pi and cation-pi interactions in protein-porphyrin complex crystal structures" in RSC Advances, 2, no. 33 (2012):12963-12972,
https://doi.org/10.1039/c2ra21937a . .
27
16
27