W Heerma
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Explore the profile of W Heerma including associated specialties, affiliations and a list of published articles.
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Articles
34
Citations
198
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Recent Articles
1.
De Brouwer A, Bouma B, van Tiel C, Heerma W, Brouwers J, Bevers L, et al.
Chem Phys Lipids
. 2001 Sep;
112(2):109-19.
PMID: 11551535
Bovine liver phosphatidylcholine transfer protein (PC-TP) has been expressed in Escherichia coli and purified to homogeneity from the cytosol fraction at a yield of 0.45 mg PC-TP per 10 mg...
2.
van Dongen W, van Wijk J, Green B, Heerma W, Haverkamp J
Rapid Commun Mass Spectrom
. 1999 Aug;
13(17):1712-6.
PMID: 10455239
A systematic comparison between the up-front Collision induced dissociation (CID) mass spectra and low-energy CID tandem mass spectra from twenty-one singly and/or doubly charged peptides has been made. CID spectra...
3.
Brull L, Kovacik V, Thomas-Oates J, Heerma W, Haverkamp J
Rapid Commun Mass Spectrom
. 1998 Oct;
12(20):1520-32.
PMID: 9796537
The phenomenon of 'internal residue loss' of protonated native- and per-O-methylated oligosaccharides has recently been described as occurring on high-energy collision conditions. Awareness of this phenomenon in the mass spectrometric...
4.
Lagerwerf F, Wever R, van Rijn H, Versluis C, Heerma W, Haverkamp J, et al.
Anal Biochem
. 1998 Mar;
257(1):45-52.
PMID: 9512771
Nitric oxide (NO) is formed by a class of NO synthases (NOS), which convert arginine into citrulline. A decreased in vivo NO availability can be the result of an increased...
5.
Egorova-Zachernyuk T, Shvets V, Versluis K, Heerma W, Creemers A, Nieuwenhuis S, et al.
J Pept Sci
. 1996 Nov;
2(6):341-50.
PMID: 9230461
A simple procedure for the preparation of the specifically labelled peptide antibiotic zervamicins IC, IIA and IIB has been developed. The zervamicin molecules are labelled with stable isotopes by culturing...
6.
van Dongen W, Ruijters H, Luinge H, Heerma W, Haverkamp J
J Mass Spectrom
. 1996 Oct;
31(10):1156-62.
PMID: 8916424
A statistical study of the fragmentation behaviour of 138 model peptides, containing 3-9 amino acid residues (n = 3-9) under high-energy collision conditions is presented. The aim was to identify...
7.
Geijtenbeek T, Westerman J, Heerma W, Wirtz K
FEBS Lett
. 1996 Aug;
391(3):333-5.
PMID: 8765001
The phosphatidylcholine transfer protein (PC-TP) from bovine liver contains one molecule of non-covalently bound PC. In order to gain more insight into the physiological function of PC-TP, PC was extracted...
8.
Van den Hooven H, Lagerwerf F, Heerma W, Haverkamp J, Piard J, Hilbers C, et al.
FEBS Lett
. 1996 Aug;
391(3):317-22.
PMID: 8764998
The lantibiotic lacticin 481 is a bacteriocin produced by Lactococcus lactis ssp. lactis. This polypeptide contains 27 amino acids, including the unusual residues dehydrobutyrine and the thioether-bridging lanthionine and 3-methyllanthionine....
9.
Lagerwerf F, van de Weert M, Heerma W, Haverkamp J
Rapid Commun Mass Spectrom
. 1996 Jan;
10(15):1905-10.
PMID: 9004526
The positive- and negative-ion collision-induced dissociation spectra of peptides containing methionine, methionine sulphoxide and methionine sulphone have been studied. Characteristic fragmentations were identified and evaluated as possible indicators for the...
10.
Heerma W, Versluis C, de Koster C, Kruijtzer J, Zigrovic I, Liskamp R
Rapid Commun Mass Spectrom
. 1996 Jan;
10(4):459-64.
PMID: 8721042
The collision-induced dissociation (CID) spectra of the [M+H]+ ions of a pentapeptide and the corresponding peptoid and retropeptoid have been compared. The spectra of the peptide and peptoid both exhibit...