1: Karunakaran R, Ebert K, Harvey S, Leonard ME, Ramachandran V, Poole PS.
Thiamine is synthesized by a salvage pathway in Rhizobium leguminosarum bv.
viciae strain 3841. J Bacteriol. 2006 Sep;188(18):6661-8. PubMed PMID: 16952958; 
PubMed Central PMCID: PMC1595474.

2: Nosaka K, Nishimura H, Kawasaki Y, Tsujihara T, Iwashima A. Isolation and
characterization of the THI6 gene encoding a bifunctional thiamin-phosphate
pyrophosphorylase/hydroxyethylthiazole kinase from Saccharomyces cerevisiae. J
Biol Chem. 1994 Dec 2;269(48):30510-6. PubMed PMID: 7982968.

3: Kawasaki Y. Copurification of hydroxyethylthiazole kinase and
thiamine-phosphate pyrophosphorylase of Saccharomyces cerevisiae:
characterization of hydroxyethylthiazole kinase as a bifunctional enzyme in the
thiamine biosynthetic pathway. J Bacteriol. 1993 Aug;175(16):5153-8. PubMed PMID:
8394314; PubMed Central PMCID: PMC204982.

4: Nishimura H, Kawasaki Y, Nosaka K, Kaneko Y, Iwashima A. A constitutive
thiamine metabolism mutation, thi80, causing reduced thiamine pyrophosphokinase
activity in Saccharomyces cerevisiae. J Bacteriol. 1991 Apr;173(8):2716-9. PubMed
PMID: 1849514; PubMed Central PMCID: PMC207844.

5: Kawasaki Y, Nosaka K, Kaneko Y, Nishimura H, Iwashima A. Regulation of
thiamine biosynthesis in Saccharomyces cerevisiae. J Bacteriol. 1990
Oct;172(10):6145-7. PubMed PMID: 2170344; PubMed Central PMCID: PMC526944.