| SolubleOther = Topen v vročem [[alkohol]]u, alkalnih hidroksidih, netopen v [[kloroform]]u.
| pKa=2,38 (karboksil), 9,39 (amino)<ref name="isbn0-19-855338-2">{{cite book | author = Dawson, RMC | authorlink = | editor = | others = | title = Data for Biochemical Research | edition = | publisher = Clarendon Press | location = Oxford | year = 1969 | pages = | isbn = 0-19-855338-2 |display-authors=etal}}</ref>
}}
|Section6={{Chembox Pharmacology
Vrstica 61:
==Zgodovina==
Prvi je triptofan izoliral in opisal [[Frederick Hopkins]] leta 1901.<ref name="pmid16992614">{{cite journal | authorsauthor1 = Hopkins FG, |author2=Cole SW | title = A contribution to the chemistry of proteids: Part I. A preliminary study of a hitherto undescribed product of tryptic digestion | journal = The Journal of Physiology | volume = 27 | issue = 4-5 | pages = 418–28 | date = Dec 1901 | pmid = 16992614 | pmc = 1540554 | doi = 10.1113/jphysiol.1901.sp000880 }}</ref> Iz 600 g [[kazein]]a je po [[hidroliza|hidrolizi]] pridobil 4-8 g triptofana.<ref name="Cox_1943">{{cite journal|doi=10.15227/orgsyn.010.0100 | author = Cox GJ, King H | title = L-Tryptophane | volume= 2 | pages = 612–616 | year = 1943 | url=http://www.orgsyn.org/demo.aspx?prep=CV2P0612|journal=Org. Synth}}</ref>
== Biosinteza ==
[[Mikroorganizmi]] in [[rastlina|rastline]] so sposobni sami sintetizirati triptofan, medtem ko ga živali dobijo s prehrano, običajno v obliki proteinov. Običajni poti sinteze sta iz šikimske ali iz antranilne kisline.<ref name="pmid7640526">{{cite journal | authorsauthor1 = Radwanski ER, |author2=Last RL | title = Tryptophan biosynthesis and metabolism: biochemical and molecular genetics | journal = The Plant Cell | volume = 7 | issue = 7 | pages = 921–34 | date = Jul 1995 | pmid = 7640526 | pmc = 160888 | doi = 10.1105/tpc.7.7.921 }}</ref> V zadnjem koraku sinteze [[encim]] triptofan sintaza katalizira reakcijo med indolom in [[serin]]om.
