any of a group of substances which occur naturally as insect pigments
Examples of 'pterin' in a sentence
pterin
Pigment extractions revealed that orange body coloration resulted from pterin pigments and not carotenoids.
Yasmeen R. Erritouni, Beth A. Reinke, Ryan Calsbeek 2018, 'A novel body coloration phenotype in Anolis sagrei: Implications for physiology, fitness,and predation', PLOS ONE10.1371/journal.pone.0209261. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The pterin ligand forms two chelate rings.
Siddhartha S. Baisya, Parag S. Roy 2013, '(2-Amino-7-methyl-4-oxidopteridine-6-carboxylato-κ3O4,N5,O6)aqua(ethane-1,2-diamine-κ2N,N′)nickel(II)dihydrate', Acta Crystallographica Section Ehttp://scripts.iucr.org/cgi-bin/paper?S160053681300069X. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The phen and pterin ring systems are nearly perpendicular [dihedral angle = 85.16 (5)°].
Siddhartha S. Baisya, Baidyanath Ghosh, Parag S. Roy 2015, 'Crystal structure of (2-amino-7-methyl-4-oxidopteridine-6-carboxylato-κ3O4,N5,O6)aqua(1,10-phenanthroline-κ2N,N′)zinctrihydrate', Acta Crystallographica Section E: Crystallographic Communicationshttp://scripts.iucr.org/cgi-bin/paper?S2056989015014619. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Formaldehyde metabolizing systems can be divided into those dependent upon pterin cofactors, sugar phosphates and those dependent upon glutathione.
Nathan Houqian Chen, Karrera Y Djoko, Alastair G McEwan, Frédéric J Veyrier 2016, 'Formaldehyde stress responses in bacterial pathogens', Frontiers in Microbiologyhttp://journal.frontiersin.org/Journal/10.3389/fmicb.2016.00257/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)