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Table 1 Online HPLC parameters for histones H4 and H3

From: Histone proteoform analysis reveals epigenetic changes in adult mouse brown adipose tissue in response to cold stress

 

Histone H4

Histone H3

Sample Volume

1 µL

1 µL

Temperature

4.0 [°C]

4.0 [°C]

Buffer A

2% ACN 0.1% FA

2% ACN 0.1% FA

Buffer B

98% ACN 0.1% FA

98% ACN 0.1% FA

Equilibration

Duration = 5.000 [min]

Duration = 5.000 [min]

Column

10 cm × 100 µm self-packed C3

10 cm × 100 µm self-packed C3

Flow rate

0.200 [µL/min]

0.200 [µL/min]

Linear Gradient

Time (min)

% Buffer B [%]

Time (min)

% Buffer B [%]

 

0

29.0

0

4.0

 

0.5

29.0

0.5

4.0

 

70

35.0

70

15.0

 

75

98.0

105

35.0

 

80

98.0

110

98.0

 

85

5.0

115

98.0

   

120

5.0

  1. 1 µL of sample was injected per run after resuspension to a standard concentration (200 ng/µL for histone H4; 2 µg/µL for histone H3). The same buffers were used with different gradients (See Linear Gradient section). Histone species were introduced to the Orbitrap Fusion Lumos mass spectrometer using nano-electrospray ionization as they eluted