156
~
tfJ·
iii
~
al
"'C
:a!
125
100
75
50
25
0
125
100
75
50
a
.............
c
,,0"-'
-.S. Pantoja
., .............. ~
" .. ~ \
b
\
I
\
,
\
I
~. ,"0'
........ /
'.'
".
, ....... . .
. /:)-0'
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,
.
........................
d
.0 - .-0-, _._. -. _._. -0-' _. _. -.- .
I
~
- 0 - LYA-ala 4
)
.... - 25
.....................................................
....... LYA-ala 2
t
-·0·- LYA-ala
~
r-L
o 2 4 6 8 10 12 14 0
200
400
600
800
Time (h)
Fig. 6.14. Time course of hydrolysis; a,b LYA-ala4 incubated in Flax Pond sea water; c,d A kinetic model
in which all bonds are hydrolyzed at the same rate. Expanded scales show the first 14 h of incubation
(a) and the random model for the same period (e), whereas the entire experiment is depicted in b for
the incubation and d for the model
Acknowledgements
I would like to thank A. Gianguzza and the organizing committee of the International School on Marine Chemistry for the invitation to participate in this event. Thanks
to 1. Aluwihare and K. Harper for helpful comments on a previous version of this
article. Work with fluorescent molecular probes was developed while the author
was conducting his Ph.D. research under the guidance of Dr. C. tee at Stony
Brook (SUNY). S. Pantoja was supported by the Postdoctoral Scholar Program at the
Woods Hole Oceanographic Institution, with funding provided by the Johnson Foundation.