Chapter 6 Using Tools and Applications

6

4.

Select the Formula or Sequence for the type of isotope to

 

calculate.

 

 

 

5.

Select a formula from the list, or type in a new formula.

 

 

Valid entries for each formula type are:

 

 

 

Formula Type

Valid Entries

 

 

Elemental

Any element from the Periodic

 

Table. The first letter of two-letter

 

elemental symbols must be

 

capitalized. Spaces do not matter.

 

 

Amino Acid

One-letter or three-letter amino acid

Sequence

codes. The first letter of amino acid

 

codes must be capitalized. Spaces

 

do not matter.

 

NOTE: Do not include elemental

 

codes when you type the sequence

 

(for example, to specify water of

 

hydration). Invalid results may be

 

generated.

 

 

DNA

ACGT

Sequence

 

 

 

RNA

ACGU

Sequence

 

 

 

Carbohydrates

Any entry listed for carbohydrates

 

from Elemental Composition Limits.

 

See “Setting limits for other result

 

types” on page 6-12.

 

Separate entries with spaces.

 

 

6. Select the Plus H2O check box if you want to calculate the isotopes for the complete molecule (residue plus water of hydration).

6-14 Applied Biosystems