{"id":1548,"date":"2017-04-09T06:40:18","date_gmt":"2017-04-09T04:40:18","guid":{"rendered":"https:\/\/wissen.science-and-fun.de\/chemistry\/?p=1548"},"modified":"2017-04-29T08:14:27","modified_gmt":"2017-04-29T06:14:27","slug":"histidine-his-h","status":"publish","type":"post","link":"https:\/\/wissen.science-and-fun.de\/chemistry\/2017\/04\/09\/histidine-his-h\/","title":{"rendered":"Histidine (His, H)"},"content":{"rendered":"

NMR-data [1] of histidine:<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\"Histidin\"<\/th>\nAtom<\/th>\nAtomtyp<\/th>\nchemical shift [ppm]1<\/sup><\/th>\nRandom Coil
\nchem. shift\u00a03<\/sup><\/th>\n		Random Coil
\nchem. shift\u00a04<\/sup><\/th>\n<\/tr>\n
average<\/strong><\/td>\nstandard deviation<\/strong><\/td>\nentries2<\/sup><\/strong><\/td>\n<\/tr>\n
H<\/td>\nH<\/td>\n\u00a08.261<\/td>\n\u00a00.746<\/td>\n17517<\/td>\n8.42<\/td>\n8.37<\/td>\n<\/tr>\n
H\u03b1<\/td>\nH<\/td>\n\u00a04.62<\/td>\n\u00a00.614<\/td>\n13920<\/td>\n4.73<\/td>\n5.00<\/td>\n<\/tr>\n
H\u03b22<\/td>\nH<\/td>\n\u00a03.175<\/td>\n\u00a01.199<\/td>\n13026<\/td>\n3.29<\/td>\n3.23<\/td>\n<\/tr>\n
H\u03b23<\/td>\nH<\/td>\n\u00a03.107<\/td>\n\u00a01.141<\/td>\n12659<\/td>\n3.16<\/td>\n3.12<\/td>\n<\/tr>\n
H\u03b41<\/td>\nH<\/td>\n\u00a010.356<\/td>\n\u00a09.354<\/td>\n841<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
H\u03b42<\/td>\nH<\/td>\n\u00a07.201<\/td>\n\u00a03.606<\/td>\n9406<\/td>\n7.29<\/td>\n7.29<\/td>\n<\/tr>\n
H\u03b51<\/td>\nH<\/td>\n\u00a07.809<\/td>\n\u00a02.350<\/td>\n7460<\/td>\n8.58<\/td>\n8.57<\/td>\n<\/tr>\n
H\u03b52<\/td>\nH<\/td>\n\u00a011.407<\/td>\n\u00a08.532<\/td>\n325<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
C<\/td>\nC<\/td>\n\u00a0175.110<\/td>\n\u00a04.876<\/td>\n10830<\/td>\n174.1<\/td>\n172.6<\/td>\n<\/tr>\n
C\u03b1<\/td>\nC<\/td>\n\u00a056.521<\/td>\n\u00a02.80<\/td>\n15550<\/td>\n55.0<\/td>\n53.3<\/td>\n<\/tr>\n
C\u03b2<\/td>\nC<\/td>\n\u00a030.294<\/td>\n\u00a02.418<\/td>\n4662<\/td>\n29.0<\/td>\n29.0<\/td>\n<\/tr>\n
C\u03b3<\/td>\nC<\/td>\n\u00a0131.214<\/td>\n\u00a08.018<\/td>\n169<\/td>\n131.1<\/td>\n131.2<\/td>\n<\/tr>\n
C\u03b42<\/td>\nC<\/td>\n\u00a0119.917<\/td>\n\u00a05.929<\/td>\n5908<\/td>\n120.1<\/td>\n120.3<\/td>\n<\/tr>\n
C\u03b51<\/td>\nC<\/td>\n\u00a0137.278<\/td>\n\u00a05.448<\/td>\n4641<\/td>\n136.2<\/td>\n136.3<\/td>\n<\/tr>\n
N<\/td>\nN<\/td>\n\u00a0119.637<\/td>\n\u00a04.80<\/td>\n16062<\/td>\n118.2<\/td>\n118.2<\/td>\n<\/tr>\n
N\u03b41<\/td>\nN<\/td>\n\u00a0193.065<\/td>\n\u00a033.590<\/td>\n642<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
N\u03b52<\/td>\nN<\/td>\n\u00a0180.661<\/td>\n\u00a021.090<\/td>\n601<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
roportion of proteines<\/th>\npK2<\/sub> COOH<\/th>\npK1<\/sub>COOH<\/th>\nisoelectrical
\npoint<\/th>\n		pK1<\/sub>NH2<\/sub><\/th>\npK2<\/sub>NH2<\/sub><\/th>\n<\/tr>\n
\u00a02.1%<\/td>\n\u00a0–<\/td>\n\u00a01.78<\/td>\n\u00a07.47<\/td>\n\u00a08.97<\/td>\n\u00a05.97<\/td>\n<\/tr>\n
CAS- Nnmber<\/th>\nmolar mass<\/th>\nformula<\/th>\ndensity<\/th>\nmelting point<\/th>\nsolubility<\/th>\n<\/tr>\n
\n
    \n
  • 71-00-1 (L<\/small>-Enantiomer)<\/li>\n
  • 351-50-8 (D<\/small>-Enantiomer)<\/li>\n
  • 4998-57-6 (DL<\/small>-Histidine)<\/li>\n<\/ul>\n<\/td>\n
\u00a0155,16\u00a0g\u00b7mol\u22121<\/sup><\/td>\n\u00a0C6<\/sub>H9<\/sub>N3<\/sub>O2<\/sub><\/td>\n<\/td>\n\u00a0287\u00b0C\u00a0(decomposition)<\/small><\/td>\nbad in water\u00a0(38,2 g\u00b7l\u22121<\/sup>\u00a0at 20\u00b0C)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

1<\/sup> Depending on the type of atom it was 1<\/sup>H, 13<\/sup>C or 15<\/sup>N chemical shift. 1<\/sup>H und 13<\/sup>C relative to TMS and 15<\/sup>N relative to liquid ammonia<\/p>\n

2<\/sup> Number of individual chemical shift data for averaging according to [2]<\/p>\n

3<\/sup> with Alanine as neighborhood in the hexapeptide Gly-Gly-X-Ala-Gly-Gly [3]<\/p>\n

4<\/sup> with Proline as neighborhood in the hexapeptide Gly-Gly-X-Pro-Gly-Gly [3]<\/p>\n

\n

3D- Modell<\/h3>\n
<\/div>\n

<\/p>\n

sources:<\/p>\n

[1] “BioMagResBank”, Eldon L. Ulrich; Hideo Akutsu; Jurgen F. Doreleijers; Yoko Harano; Yannis E. Ioannidis; Jundong Lin; Miron Livny; Steve Mading; Dimitri Maziuk; Zachary Miller; Eiichi Nakatani; Christopher F. Schulte; David E. Tolmie; R. Kent Wenger; Hongyang Yao; John L. Markley; Nucleic Acids Research 36, D402-D408 (2008) doi: 10.1093\/nar\/gkm957<\/p>\n

[2] http:\/\/www.bmrb.wisc.edu\/ last visit march 2017<\/p>\n

[3] David S. Wishart, Colin G. Bigam, Arne Holm, Robert S. Hodges, Brian D. Sykes; Journal of Biomolecular NMR
\nJanuary 1995, Volume 5, Issue 1, pp 67-81 doi:10.1007\/BF00227471<\/p>\n

[4] Wikipedia\u00a0http:\/\/de.wikipedia.org\/wiki\/Aminos%C3%A4uren (last visit january 2014)<\/p>\n

[5] Wikipedia http:\/\/de.wikipedia.org\/wiki\/Asparagin\u00a0(last visit january 2014)<\/p>\n

3D Mol: Nicholas Rego and David Koes
\n3Dmol.js: molecular visualization with WebGL
\nBioinformatics (2015) 31 (8): 1322-1324 doi:10.1093\/bioinformatics\/btu829<\/p>\n","protected":false},"excerpt":{"rendered":"

NMR-data [1] of histidine: Atom Atomtyp chemical shift [ppm]1 Random Coil chem. shift\u00a03 Random Coil chem. shift\u00a04 average standard deviation entries2 H H \u00a08.261 \u00a00.746 17517 8.42 8.37 H\u03b1 H \u00a04.62 \u00a00.614 13920 4.73 5.00 H\u03b22 H \u00a03.175 \u00a01.199 13026 3.29 3.23 H\u03b23 H \u00a03.107 \u00a01.141 12659 3.16 3.12 H\u03b41 H \u00a010.356 \u00a09.354 841 H\u03b42 … <\/p>\n

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