Initially
the absorbance at 214 nm was monitored because it is generally
accepted as the standard peptide-mapping wavelength.5 Figure 2A
shows the TFA chromatograms at 214 nm obtained for two lots of
wheat
fluorometric assay for the
measurement of nitrite in biological samples. Anal.
Biochem., 214(1), 11-16 (1993).
5. Grisham, M. B., et al., Quantitation of nitrate and
nitrite in extracellular fluids.
]
Compression force [kN]
5 20 25 30 351510
Excipient System LubMannitol+API traditional mix Mannitol+API+MST
Filler Lubricant
50
100
150
200
250
0
Ta
b
le
t
H
a
rd
Radioactivity (SR) of ATP (cpm/nmole)
SR = cpm of 5 µl of γ-32P-ATP Assay Cocktail
nmole of ATP
cpm – value from control (step 7)
nmole – 1.25 nmole (5 µl of 250 µM ATP
Assay Cocktail)
2. Specific
Radioactivity (SR) of ATP (cpm/nmole)
SR = cpm of 5 µl of γ-32P-ATP Assay Cocktail
nmole of ATP
cpm – value from control (step 7)
nmole – 1.25 nmole (5 µl of 250 µM ATP
Assay Cocktail)
2. Specific
Radioactivity (SR) of ATP (cpm/nmole)
SR = cpm of 5 µl of γ-32P-ATP Assay Cocktail
nmole of ATP
cpm – value from control (step 7)
nmole – 1.25 nmole (5 µl of 250 µM ATP
Assay Cocktail)
2. Specific
Radioactivity (SR) of ATP (cpm/nmole)
SR = cpm of 5 µl of γ-32P-ATP Assay Cocktail
nmole of ATP
cpm – value from control (step 7)
nmole – 1.25 nmole (5 µl of 250 µM ATP
Assay Cocktail)
2. Specific
Radioactivity (SR) of ATP (cpm/nmole)
SR = cpm of 5 µl of γ-32P-ATP Assay Cocktail
nmole of ATP
cpm – value from control (step 7)
nmole – 1.25 nmole (5 µl of 250 µM ATP
Assay Cocktail)
2. Specific
Formula weight: 480.9 (anhydrous)
pKa = 3.3, 7.7, 9.7 at 25 °C
1
Melting Point: Decomposes at 214 °C2
EMm (220nm) = 13 (free base in 0.1 M HCl)2
EmM (268nm) = 18.04
35)
Column Isothermal Programmed
PEG 1 280 °C 280 °C
PEG 2 260 °C 270 °C
PEG 3 250 °C 260 °C
PEG 4 250 °C 260 °C
PEG 5 280 °C 300 °C
SLB-IL60 300 °C 300 °C
Description Cat. No.
SLB-IL60, 15 m
Radioactivity (SR) of ATP (cpm/nmole)
SR = cpm of 5 µl of γ-32P-ATP Assay Cocktail
nmole of ATP
cpm – value from control (step 7)
nmole – 1.25 nmole (5 µl of 250 µM ATP
Assay Cocktail)
2. Specific
Radioactivity (SR) of ATP (cpm/nmole)
SR = cpm of 5 µl of γ-32P-ATP Assay Cocktail
nmole of ATP
cpm – value from control (step 7)
nmole – 1.25 nmole (5 µl of 250 µM ATP
Assay Cocktail)
2. Specific
Radioactivity (SR) of ATP (cpm/nmole)
SR = cpm of 5 µl of γ-32P-ATP Assay Cocktail
nmole of ATP
cpm – value from control (step 7)
nmole – 1.25 nmole (5 µl of 250 µM ATP
Assay Cocktail)
2. Specific
Discovery C18
column (25 cm × 4.6 mm, 5 micron, Catalog Number
504971) using a 20 minute linear gradient from 5–50%
B at 0.7 ml/min with UV detection at 214 nm followed by
mass spectrometry.
Solvent
REFERENCE:
de la Haba, G., Leder, I.G., and Racker, E. (1955) Journal of Biological Chemistry 214, 409-426
NOTES:
1. This assay is based on the cited reference.
2. Triosephosphate Isomerase
Barratt, M.J., et al., Proc. Natl. Acad. Sci. USA, 91,
4781-4785 (1994).
5. Thomson, S., et al., Semin. Cell. Biol., 10, 205-214
(1999).
6. Strahl, B.D., et al., Proc. Natl. Acad. Sci. USA, 96
, K., Eur. J. Biochem., 53, 481-486 (1975).
5. Yamazaki, Y. et al., Eur. J. Biochem., 77, 511-520 (1977).
6. Haystead, C.M.M. et al., Eur. J. Biochem., 214, 459-467 (1993).
7. Bar-Tana, J. and Cleland
Dimensions 250 x 4.6 mm
20 µm
10 µm
Column dimension:
50 mm I.D:, 220 mm length
Flow rate: 23.5 CV/h
5
Figure 5.
Packing of PharmPrep™ P 100 RP-8e, 10 µm sorbent into
showed no peaks greater in intensity than 0.004 AUFS (after the
column frontal volume) at either 214 nm or 254 nm.
User Guide
HPLC Certified
Millex®-LG and Millex®-LH
4, 13, and 25 mm Syringe