a yellow, crystalline, heteroaromatic compound having a bicyclic molecular structure; any substituted derivative of this, examples of which occur naturally, esp as vitamins of the B group and insect pigments. Formula: C6H4N4
Examples of 'pteridine' in a sentence
pteridine
Pteridine levels in bees do not correlate with age as well as in other insects.
Frank D. Rinkevich, Joseph W. Margotta, Jean M. Pittman, James A. Ottea, Kristen B.Healy 2016, 'Pteridine levels and head weights are correlated with age and colony task in the honeybee, Apis mellifera', PeerJhttps://peerj.com/articles/2155.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Previous reports showed that melanin, ommochrome and pteridine are increased in silkworm quail (q) mutants.
Hongyi Nie, Chun Liu, Tingcai Cheng, Qiongyan Li, Yuqian Wu, Mengting Zhou, YinxiaZhang, Qingyou Xia 2014, 'Transcriptome analysis of integument differentially expressed genes in the pigmentmutant (quail) during molting of silkworm, Bombyx mori.', PLoS ONEhttp://europepmc.org/articles/PMC3981777?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Pigmentation of the silkworm epidermis consists of melanin, ommochrome and pteridine.
Pingyang Wang, Zhiyong Qiu, Dingguo Xia, Shunming Tang, Xingjia Shen, Qiaoling Zhao 2017, 'Transcriptome analysis of the epidermis of the purple quail-like (q-lp) mutant ofsilkworm, Bombyx mori', PLOS ONE10.1371/journal.pone.0175994. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Pteridine levels correlate well with age, and wild caught insects may be accurately aged by measuring pteridine levels.
Frank D. Rinkevich, Joseph W. Margotta, Jean M. Pittman, James A. Ottea, Kristen B.Healy 2016, 'Pteridine levels and head weights are correlated with age and colony task in the honeybee, Apis mellifera', PeerJhttps://peerj.com/articles/2155.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
To observe xanthophores, the iridophore layer was scraped from the scale and the pteridine/carotenoid pigments were aggregated.
Kanta Mizusawa, Yutaka Yamamura, Satoshi Kasagi, José Miguel Cerdá-Reverter, AkiyoshiTakahashi 2017, 'Data on the density of xanthophores in a whole scale of goldfish acclimated to whiteor black background color', Data in Briefhttp://www.sciencedirect.com/science/article/pii/S235234091730416X. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Of particular interest are enzymes corresponding to pteridine biosynthesis, reported for the first time in this study.
Meng-Hsiun Tsai, Steve G. Huang, Shyh-Chang Tsaur, Yao-Ching Hung, Sheng-Hsiung Chiu,Chi-Wei Wang 2009, 'Clinical Genomics Identifies the Expression of Human Ovarian Carcinoma', International Journal of Gerontologyhttp://www.sciencedirect.com/science/article/pii/S1873959809700420. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Pteridine levels were higher in foragers than nurses of the same age in bees from single cohort colonies.
Frank D. Rinkevich, Joseph W. Margotta, Jean M. Pittman, James A. Ottea, Kristen B.Healy 2016, 'Pteridine levels and head weights are correlated with age and colony task in the honeybee, Apis mellifera', PeerJhttps://peerj.com/articles/2155.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)