PMID- 9706381
OWN - NLM
STAT- MEDLINE
DCOM- 19981026
LR  - 20181003
IS  - 1075-4261 (Print)
IS  - 1075-4261 (Linking)
VI  - 4
IP  - 4
DP  - 1998
TI  - Vibrational study of phosphate modes in GDP and GTP and their interaction with 
      magnesium in aqueous solution.
PG  - 219-27
AB  - Raman and infrared spectra were examined for guanosine 5'-diphosphate (GDP) and 
      guanosine 5'-triphosphate (GTP) in aqueous solution. The vibrational modes were 
      assigned on the basis of isotopic frequency shifts and relative intensities in 
      the Raman and infrared spectra. The observed frequency shifts on 18O isotope 
      labeling made it possible to identify the bands from each phosphate group (alpha, 
      beta, gamma). Frequency shifts were observed as Mg2+ complexes with GDP and GTP. 
      The results suggested that Mg2+ binds to GDP in a bidentate manner to the alpha, 
      beta P[symbol: see text]O bonds and in a tridentate manner to the alpha, beta and 
      gamma P[symbol: see text]O bonds of Mg.GTP. The results indicate that structure 
      of Mg2+ coordinated to GTP in aqueous solution differs somewhat to that found for 
      Mg.ATP.
FAU - Wang, J H
AU  - Wang JH
AD  - Department of Physics, City College, City University of New York, New York 10031, 
      USA.
FAU - Xiao, D G
AU  - Xiao DG
FAU - Deng, H
AU  - Deng H
FAU - Callender, R
AU  - Callender R
FAU - Webb, M R
AU  - Webb MR
LA  - eng
GR  - GM35183/GM/NIGMS NIH HHS/United States
PT  - Journal Article
PT  - Research Support, U.S. Gov't, P.H.S.
PL  - United States
TA  - Biospectroscopy
JT  - Biospectroscopy
JID - 9605413
RN  - 0 (Cations, Divalent)
RN  - 0 (Oxygen Isotopes)
RN  - 0 (Solutions)
RN  - 059QF0KO0R (Water)
RN  - 146-91-8 (Guanosine Diphosphate)
RN  - 86-01-1 (Guanosine Triphosphate)
RN  - I38ZP9992A (Magnesium)
SB  - IM
MH  - Cations, Divalent
MH  - Guanosine Diphosphate/*chemistry
MH  - Guanosine Triphosphate/*chemistry
MH  - Hydrogen-Ion Concentration
MH  - Magnesium/*chemistry
MH  - Molecular Structure
MH  - Oxygen Isotopes
MH  - Solutions
MH  - Spectroscopy, Fourier Transform Infrared/methods
MH  - Spectrum Analysis, Raman/methods
MH  - Vibration
MH  - Water
EDAT- 1998/08/26 00:00
MHDA- 1998/08/26 00:01
CRDT- 1998/08/26 00:00
PHST- 1998/08/26 00:00 [pubmed]
PHST- 1998/08/26 00:01 [medline]
PHST- 1998/08/26 00:00 [entrez]
AID - 10.1002/(SICI)1520-6343(1998)4:4%3C219::AID-BSPY1%3E3.0.CO;2-Y [doi]
PST - ppublish
SO  - Biospectroscopy. 1998;4(4):219-27. doi: 
      10.1002/(SICI)1520-6343(1998)4:4%3C219::AID-BSPY1%3E3.0.CO;2-Y.