ALANINE
ALA, A

CHEMICAL STRUCTURE
CHEMICAL SHIFTS
Standard chemical shifts of random extended chain structures:
 
1Ha 13Ca 15Nb
NH: 8.25 
HA: 4.35
HB: 1.39
CO: 175.8 
CA: 50.8 
CB: 17.7
N: 122.5
a) from 86BOOK1: b) from 91JMB311-222
More info in:
  • 1H chemical shifts of amino acids
  • 13C chemical shifts of amino acids
  • Average 1HA, 1HN and 15N chemical shifts in random coil
  • IDENTIFICATION
    Easy spin system identification from:
    SECONDARY STRUCTURE
    Standard average chemical shift values used in determination of secondary structure by means of the CSI method:
    HA: 4.35
    CA: 52.2
    CO: 177.6
    Thus:

              HELIX           B STRAND          COIL
                 CA      CO       CA      CO           CA      CO
                54.7    179.6     50.3    175.0      52.4    177.6

    More info in: 13CA and 13CO chemical shifts according to secondary structure.

    OBSERVATIONS
     
    RELATED TOPICS