请输入您要查询的英文单词:

 

单词 pterin
释义

pterinn.

Brit. /ˈtɛrɪn/, U.S. /ˈtɛrən/
Forms: 1900s– pterin, 1900s– pterine.
Origin: A borrowing from German. Etymon: German Pterin.
Etymology: < German Pterin (H. Wieland & C. Schöpf 1925, in Berichte der Deutsch. Chem. Ges. 58 2178) < ancient Greek πτερόν wing, feather (see ptero- comb. form) + German -in -in suffix1, so called because it is found in insect wings (compare quot. 1954). Compare French ptérine (1950 or earlier).
Chemistry.
A substituted derivative of pteridine; esp. any of a class of these compounds which occur naturally as insect pigments. Cf. pteridine n.
ΘΚΠ
the world > matter > chemistry > organic chemistry > organic compounds > [noun] > heterocyclic compounds > containing nitrogen > pteridine
pterin1934
pteridine1943
1934 Chem. Abstr. 28 1353 (heading) Occurrence of pterins in wasps and butterflies.
1954 Sci. News 34 91 The purines and pterines constitute a major source of colour to the wings of butterflies;..the latter as white, red, yellow, and orange pigments, which are also found in the integument of wasps.
1970 A. L. Lehninger Biochemistry xxiv. 543 Folic acid..contains three characteristic building blocks (1) a substituted pterin, (2) p-aminobenzoic acid, and (3) glutamic acid.
1988 P. W. Kuchel et al. Schaum's Outl. Theory & Probl. Biochem. xv. 419 Biopterin..contains the pterin ring.
2001 R. J. Goldstein Bettas 14 Katherine Royal..showed in the 1970s that red in Betta splendens is caused by pterins and carotenoids like astaxanthin.
This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).
<
n.1934
随便看

 

英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/3/31 7:04:40