CHAPTER 9 • Binding Ability of Inorganic Major Components of Sea Water
259
Table A9.5. Apparent protonation constants of amino acids in SSWE at different salinities
5
Glycine
a
Serine
b
Valine
b
/3-alanine
b
logK,
logK2
logK,
logK2
logK,
logK2
logK,
logK2
5
2.426
9.496
2.292
9.072
2.341
9.480
3.495
9.923
5.5
2.393
9.539
9
2.252
9.011
2.276
9.465
10
2.363
9.447
10.6
3.448
9.907
12.5
2.371
9.447
14.5
2.247
8.951
2.297
9.431
3.515
9.853
17.5
2.186
8.773
2.286
9.393
3.472
9.866
20
2.210
8.791
2.315
9.287
3.451
9.905
21
8.883
2.298
9.340
3.465
9.852
22.6
2.186
8.858
2.276
9.361
24.7
8.845
2.304
9.341
3.498
9.884
25
2.365
26.5
2.370
9.339
29
2.172
8.727
2.281
9.338
3.488
9.837
32
2.124
8.821
2.332
9.378
35
2.358
9.392
2.177
8.793
2.316
9.319
3.476
9.836
5
a-alanine
c
Leucine
c
Threonine
c
Methionine
c
logK,
logK2
logK,
logK2
logK,
logK2
logK,
logK2
4.5
2.478
9.715
2.424
9.583
2.293
8.985
2.251
9.087
13.5
2.415
9.626
2.414
9.514
2.261
8.842
2.271
9.010
22.5
2.414
9.614
2.388
9.474
2.223
8.767
2.261
8.973
27.7
2.422
9.581
2.396
9.452
2.290
8.791
2.272
8.963
32.4
2.465
9.589
2.473
9.482
2.342
8.790
2.384
9.001
a Fiol et al. (1995a).
b Fiol et al. (1998).
C Fiol et al. (1995b).