Here are a few other labelling schemes which I am aware of – but this is by no means a complete list. Please look at the references for more details.

 

Alanine Methyl Labelling

An extension/alternative to the IVL labelling method in which alanine residues are ¹³C labelled at the Cβ position and deuterated at the Hα potision. Two separate protocols have been developed, one of which is based on the use of a rich medium (Isaacson et al.) and the other on M9 minimal medium (Ayala et al.).

References:
R.L. Isaacson, P.J. Simpson, M. Liu, E. Cota, X. Zhang, P. Freemont and S. Matthews (2007) J. Am. Chem. Soc. 129 15428-15429. (Link to Article)
I. Ayala, R. Sounier, N. Usé, P. Gans and J. Boisbouvier (2009) J. Biomol. NMR 43 111-119. (Link to Article)

 

Methionine Methyl Labelling

An extension/alternative to the IVL labelling method in which the methionine methyl groups are ¹H,¹³C labelled against a ²H,¹²C background. Two separate protols have been developed by Fischer et al. and Gelis et al.

References:
M. Fischer, K. Kloiber, J. Häusler, K. Ledolter, R. Konrat and W. Schmid (2007) ChemBioChem 8 610-612. (Link to Article)
I. Gelis, A.M.J.J. Bonvin, D. Keramisanou, M. Koukaki, G. Gouridis, S. Karamanou, A. Economou and C.G. Kalodimos (2007) Cell 131 756-769. (Link to Article)

 

Threonine Methyl Labelling

An extension/alternative to the IVL labelling method in which threonine methyl groups are ¹H,¹³C labelled against a ²H,¹²C background.

Reference:
A Velyvis, A.M. Ruschak and L.E. Kay (2012) PLoS ONE 7 e43725. (Link to Article)

 

10% Glucose Labelling

This results in a somewhat complicated labelling scheme rather like the glycerol labelling. It can be used to enable sterospecific assignment of Val and Leu methyl groups and also simplifies MAS-NMR ¹³C-¹³C correlation experiments.

References:
H. Senn, B. Werner, B.A. Messerle, C. Weber, R. Traber and K. Wüthrich (1989) FEBS Letters 249 113-118. (Link to Article)
D. Neri, T. Szyperski, G. Otting, H. Senn and K. Wüthrich (1989) Biochemistry 28 7510-7516. (Link to Article)
M. Schubert, T. Manolikas, M. Rogowski and B.H. Meier (2006) J. Biomol. NMR 35 167-173. (Link to Article)

 

1- and 2-Glucose Labelling

This scheme introduces isolated ¹³C atoms into aromatic side chains which is useful when studying the dynamics of Cα, methyl and aromatic side chain groups using relaxation methods (Teilum et al.; Lundström et al). For solid-state MAS NMR studies these labelling schemes can be used in a similar way to the 1,3- and 2-glycerol scheme or they can be used specifically to detect inter-molecular contacts (Loquet et al.)

References:
M. Hong (1999) J. Mag. Res. 139 389-401. (Link to Article)
K. Teilum, U. Brath, P. Lundström and Mikael Akke (2006) J. Am. Chem. Soc. 128 2516-2507. (Link to Article)
P.Lundström, K. Teilum, T. Carstensen, I. Bezsonova, S. Wiesner, D.F. Hansen, T.L. Religa, M. Akke and L.E. Kay (2007) J. Biomol. NMR 38 199-212. (Link to Article)
A. Loquet, K. Giller, S. Becker and A. Lange (2010) J. Am. Chem. Soc. 132 15164-15166. (Link to Article)

 

Succinic Acid Labelling

[1,2,3,4-¹³C], [1,4-¹³C] or [2,3-¹³C] succinic acid are used as the carbon sources in the bacterial growth medium to label a light harvesting complex in the photosynthetic purple bacteria R. acidophila. The resulting MAS-NMR spectra show an increase in resolution and reduced spectral crowding.

Reference:
A.J. van Gammeren, F.B. Hulsvergen, J.G. Hollander and H.J.M. de Groot (2004) J. Biomol. NMR 30 267-274. (Link to Article)

 

Acetate Labelling

The protein is produced using a mixture of 15% ¹³C₁-acetate, 15% ¹³C₂-acetate and 70% ¹²C₁,¹²C₂-acetate. This reduces (but does not eliminate) the number of directly bonded ¹³C atoms and makes relaxation studies easier.

Reference:
A.J. Wand, R.J. Bieber, J.L. Urbauer, R.P. McEvoy and Z. Gan (1995) J. Mag. Res. 108 173-175. (Link to Article)