Table 3 The summary of observed glycopeptides from α-chain from luteinizing hormone (LH).

From: Comparison of pregnant mare serum gonadotropin products with surprising differences in protein content

Site

Observed m/z1

[M + H]+

Sequences2

Glycan structures

α-chain

N80

803.3323+

2407.995

K.NITSESTC*C*VAK

CoreHexNAc

 

871.0253+

2611.076

K.NITSESTC*C*VAK

CoreHexNAc2

 

925.0433+

2773.129

K.NITSESTC*C*VAK

CoreHexNAc2Hex

 

938.7183+

2814.153

K.NITSESTC*C*VAK

CoreHexNAc3

 

965.3713+

2894.117

K.NITSESTC*C*VAK

CoreHexNAc3 + sulfate

 

992.7383+

2976.214

K.NITSESTC*C*VAK

CoreHexNAc3Hex

 

1022.0743+

3064.228

K.NITSESTC*C*VAK

CoreHexNAc2HexNeuAc

 

1035.7473+

3105.242

K.NITSESTC*C*VAK

CoreHexNAc3NeuAc

 

1143.7863+

3429.358

K.NITSESTC*C*VAK

Core(HexNAcHex)2HexNAcNeuAc1

 

1203.1343+

3607.401

K.NITSESTC*C*VAK

Core(HexNAcHex)2NeuAc2

 

1240.8153+

3720.445

K.NITSESTC*C*VAK

Core(HexNAcHex)2HexNAcNeuAc2

N106

790.3465+

3947.702

K.AFIRVTVMGNIKLENHTQC*YC*STC*.Y3

Man5

 

822.7575+

4109.758

K.AFIRVTVMGNIKLENHTQC*YC*STC*.Y

Man6

 

835.5306+

5008.142

K.AFIRVTVMGNIKLENHTQC*YC*STC*YHHKI.-

Man7

 

862.5376+

5170.186

K.AFIRVTVMGNIKLENHTQC*YC*STC*YHHKI.-

Man8

 

754.73685+

3769.655

K.AFIRVTVMGNIKLENHTQC*YC*STC*.Y

CoreFuc

 

795.3525+

5144.964

K.AFIRVTVMGNIKLENHTQC*YC*STC*.Y

CoreHexNacFuc

 

827.7645+

4134.789

K.AFIRVTVMGNIKLENHTQC*YC*STC*.Y

CoreHexNacHexFuc

 

835.9685+

4175.809

K.AFIRVTVMGNIKLENHTQC*YC*STC*.Y

CoreHexNac2Fuc

 

868.3805+

4337.871

K.AFIRVTVMGNIKLENHTQC*YC*STC*.Y

CoreHexNac2HexFuc

 

750.8266+

4499.916

K.AFIRVTVMGNIKLENHTQC*YC*STC*.Y

Core(HexNacHex)2Fuc

 

799.3436+

4791.017

K.AFIRVTVMGNIKLENHTQC*YC*STC*.Y

Core(HexNacHex)2FucNeuAc

 

1211.9754+

4844.879

R.VTVMGNIKLENHTQC*YC*STC*YHHKI.-

CoreHexNAc4 + sulfate

β-chain

N33

688.13735+

3436.657

A.SRGPLRPLC*RPINATLAAEK.E4

Man5

 

900.43334+

3598.712

A.SRGPLRPLC*RPINATLAAEK.E

Man6

 

752.95915+

3760.767

A.SRGPLRPLC*RPINATLAAEK.E

Man7

 

785.3705+

3922.820

A.SRGPLRPLC*RPINATLAAEK.E

Man8

 

1021.9734+

4084.869

A.SRGPLRPLC*RPINATLAAEK.E

Man9

 

778.8944+

3112.555

A.SRGPLRPLC*RPINATLAAEK.E

Core

 

652.5285+

3258.612

A.SRGPLRPLC*RPINATLAAEK.E

CoreFuc

 

693.1445+

3461.692

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNacFuc

 

725.5555+

3623.743

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNacHexFuc

 

783.7735+

3914.835

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNacHexFucNeuAc

 

733.7605+

3664.773

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNac2Fuc

 

766.1705+

3826.823

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNac2HexFuc

 

798.5835+

3988.884

A.SRGPLRPLC*RPINATLAAEK.E

Core(HexNacHex)2Fuc

 

856.7965+

4279.980

A.SRGPLRPLC*RPINATLAAEK.E

Core(HexNacHex)2FucNeuAc

 

915.01515+

4571.076

A.SRGPLRPLC*RPINATLAAEK.E

Core(HexNacHex)2FucNeuAc2

 

971.1924+

3881.746

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNac3 + 2Sulfate

 

774.3765+

3867.851

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNac3Fuc

 

987.7064+

3947.803

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNac3Fuc-sulfate

 

832.5925+

4158.933

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNac3FucNeuAc

 

806.7875+

4029.905

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNac3HexFuc

 

839.1975+

4191.955

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNac3Hex2Fuc

 

897.4155+

4483.047

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNac3Hex2FucNeuAc

 

955.6335+

4774.134

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNac3Hex2FucNeuAc2

 

847.4035+

4232.984

A.SRGPLRPLC*RPINATLAAEK.E

CoreHexNac4HexFuc

  1. 1Observed m/z from MS1 spectrum.
  2. 2C* represents carbamidomethylated cysteines.
  3. 3The MS/MS spectra matched the peptide with non-specific cleavage, meaning that C-terminal of α-chain was truncated.
  4. 4The MS/MS spectra matched the peptide starting from Serine due to the signal peptide.