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Amino Acid Elemental Range Finding for Elemental Calculations

 

Elemental Count

Unk Mass/AA mass

Range Finding

mass

C

H

N

O

S

587.3

C

H

N

O

Ala

71

3

5

1

1

8.3

24.8

41.4

8.3

9.3

Arg

156.1

6

12

4

1

3.8

22.6

45.1

15.0

4.8

Asn

114

4

6

2

2

5.2

20.6

30.9

10.3

11.3

Asp

115

4

5

1

3

5.1

20.4

25.5

5.1

16.3

Cys

103

3

5

1

1

1

5.7

17.1

28.5

5.7

6.7

Glu

129

5

7

1

3

4.6

22.8

31.9

4.6

14.7

Gln

128.1

5

8

2

2

4.6

22.9

36.7

9.2

10.2

Gly

57

2

3

1

1

10.3

20.6

30.9

10.3

11.3

His

137.1

6

7

3

1

4.3

25.7

30.0

12.9

5.3

Ile

113.1

6

11

1

1

5.2

31.2

57.1

5.2

6.2

Leu

113.1

6

11

1

1

5.2

31.2

57.1

5.2

6.2

Lys

128.1

6

12

2

1

4.6

27.5

55.0

9.2

5.6

Met

131

5

9

1

1

1

4.5

22.4

40.3

4.5

5.5

Phe

147.1

9

9

1

1

4.0

35.9

35.9

4.0

5.0

Pro

97.1

5

7

1

1

6.0

30.2

42.3

6.0

7.0

Ser

87

3

5

1

2

6.8

20.3

33.8

6.8

14.5

Thr

101

4

7

1

2

5.8

23.3

40.7

5.8

12.6

Trp

186.1

11

10

2

1

3.2

34.7

31.6

6.3

4.2

Tyr

163.1

9

9

1

2

3.6

32.4

32.4

3.6

8.2

Val

99.1

5

9

1

1

5.9

29.6

53.3

5.9

6.9

 

The table above is just a basic rule of thumb calculation for the maximum and minimum element count for a given peptide mass.  The residue masses are divided into the unknown mass and then this number is multiplied against all of the elements in that amino acid residue to give the extreme range to be plugged into an elemental calculator. 

 

 
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Last updated:  Tuesday, January 19, 2016 02:49:03 PM