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NMR solution structure of the supramolecular adduct between a liver cytosolic bile acid binding protein and a bile acid-based Gd(III)-chelate
Authors
Tomaselli, S., Zanzoni, S., Ragona, L., Gianolio, E., Aime, S., Assfalg, M., Molinari, H.
Assembly
bile acid-based Gd(III)-chelate and bile acid protein complex
Entity
1. Gd(III)-chelate (polymer, Thiol state: all free), 125 monomers, 14078.99 Da Detail

AFSGTWQVYA QENYEEFLKA LALPEDLIKM ARDIKPIVEI QQKGDDFVVT SKTPRQTVTN SFTLGKEADI TTMDGKKLKC TVHLANGKLV TKSEKFSHEQ EVKGNEMVET ITFGGVTLIR RSKRV


2. (3alpha,5alpha,8alpha)-3-[(N,N-bis{2-[bis(carboxymethyl)amino]ethyl}-L-gamma-glutamyl)amino]cholan-24-oic acid (non-polymer), 822.982 × 2 Da
Total weight
15724.954 Da
Max. entity weight
14078.99 Da
Source organism
Gallus gallus
Exptl. method
solution NMR
Refine. method
simulated annealing
Data set
assigned_chemical_shifts
Chem. Shift Complete
Sequence coverage: 100.0 %, Completeness: 88.4 %, Completeness (bb): 95.8 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All88.4 % (1312 of 1484)85.0 % (657 of 773)91.7 % (530 of 578)94.0 % (125 of 133)
Backbone95.8 % (713 of 744)94.1 % (240 of 255)96.7 % (355 of 367)96.7 % (118 of 122)
Sidechain83.4 % (715 of 857)80.5 % (417 of 518)88.7 % (291 of 328)63.6 % (7 of 11)
Aromatic44.8 % (43 of 96)47.9 % (23 of 48)42.6 % (20 of 47) 0.0 % (0 of 1)
Methyl91.9 % (136 of 148)89.2 % (66 of 74)94.6 % (70 of 74)

1. Gd(III)-chelate

AFSGTWQVYA QENYEEFLKA LALPEDLIKM ARDIKPIVEI QQKGDDFVVT SKTPRQTVTN SFTLGKEADI TTMDGKKLKC TVHLANGKLV TKSEKFSHEQ EVKGNEMVET ITFGGVTLIR RSKRV

Sample

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 298 K, pH 7.2


#NameIsotope labelingTypeConcentration
1entity_1[U-100% 13C; U-100% 15N]0.3 mM
2D2O[U-100% 2H]10 %
3H2Onatural abundance90 %

LACS Plot; CA
Referencing offset: 0.11 ppm, Outliers: 2 Detail
LACS Plot; CB
Referencing offset: 0.11 ppm, Outliers: 2 Detail
LACS Plot; HA
Referencing offset: -0.33 ppm, Outliers: 2 Detail
LACS Plot; CO
Referencing offset: 0.53 ppm, Outliers: 1 Detail
Protein Blocks Logo
Calculated from 7 models in PDB: 2K62, Strand ID: A Detail


Release date
2008-11-16
Citation
Solution structure of the supramolecular adduct between a liver cytosolic bile acid binding protein and a bile acid-based gadolinium(III)-chelate, a potential hepatospecific magnetic resonance imaging contrast agent
Tomaselli, S., Zanzoni, S., Ragona, L., Gianolio, E., Aime, S., Assfalg, M., Molinari, H.
J. Med. Chem. (2008), 51, 6782-6792, PubMed 18939814 , DOI 10.1021/jm800820b ,
Related entities 1. Gd(III)-chelate, : 1 : 8 : 1 : 220 entities Detail
Experiments performed 3 experiments Detail
NMR combined restraints 4 contents Detail
Keywords hepatospecific contrast agent, HADDOCK, Gd(III) bile acid adduct