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Table 2 Identified proteins with receptor function from the human islets of Langerhans

From: Membrane Protein Profiling of Human Islets of Langerhans Using Several Extraction Methods

Protein name

UniProt account no.

Mw (kDa)

Total protein extraction

Cell surface protein biotinylation

Hydrophobic phase

Insoluble phase

Plasma membrane protein extraction

LPI flow cell

GO term

TMH prediction

Protein ID probability (%)

Unique peptides

Protein ID probability (%)

Unique peptides

Protein ID probability (%)

Unique peptides

Protein ID probability (%)

Unique peptides

Protein ID probability (%)

Unique peptides

Protein ID probability (%)

Unique peptides

Membrane

Plasma membrane

Cell surface

40S ribosomal protein SA

P08865

33

100

8

0

0

100

7

100

6

100

3

0

0

Y

Y

0

alpha-2-Macroglobulin receptor-associated protein

P30533

41

50

1

0

0

0

0

0

0

100

3

0

0

Y

Y

Y

1

Aminopeptidase N

P15144

110

0

0

0

0

100

12

0

0

0

0

0

0

Y

Y

1

ATP-binding cassette transporter sub-family C member 8

Q09428

177

0

0

0

0

0

0

100

3

0

0

100

3

Y

Y

6

B cell receptor-associated protein 31

P51572

28

100

7

100

2

100

5

100

7

100

7

100

8

Y

Y

3

Cation-dependent mannose-6-phosphate receptor

P20645

31

0

0

0

0

100

6

0

0

0

0

86

1

Y

Y

Y

1

Cation-independent mannose-6-phosphate receptor

P11717

274

100

3

0

0

0

0

0

0

0

0

0

0

Y

Y

1

CD166 antigen

Q13740

65

100

1

0

0

100

17

0

0

0

0

0

0

Y

Y

1

CD44 antigen

P16070

82

100

6

0

0

100

4

0

0

100

3

100

3

Y

Y

Y

1

CD63 antigen

P08962

26

100

2

0

0

100

3

99

1

100

2

0

0

Y

Y

4

CD81 antigen

P60033

26

0

0

0

0

100

4

0

0

0

0

0

0

Y

Y

4

CD82 antigen

P27701

30

0

0

0

0

100

4

0

0

0

0

0

0

Y

Y

4

CD9 antigen

P21926

25

50

1

0

0

100

4

0

0

50

1

0

0

Y

Y

4

CD99 antigen

P14209

19

99

1

50

1

100

2

45

0

0

0

83

1

Y

Y

2

Claudin-3

O15551

23

0

0

0

0

100

3

0

0

0

0

0

0

Y

Y

4

Endoglin

P17813

71

0

0

0

0

100

2

0

0

0

0

0

0

Y

Y

Y

1

ER lumen protein retaining receptor 1

P24390

25

50

1

0

0

0

0

100

2

0

0

0

0

Y

4

gamma-Aminobutyric acid receptor-associated protein-like 2

P60520

14

100

2

0

0

100

4

0

0

0

0

0

0

Y

0

G-protein coupled receptor 56

Q9Y653

78

0

0

0

0

100

2

0

0

0

0

0

0

Y

Y

7

High affinity cationic amino acid transporter 1

P30825

68

0

0

0

0

100

2

0

0

0

0

0

0

Y

Y

4

HLA class I histocompatibility antigen, A-68 alpha chain

P01891

41

0

0

0

0

100

2

0

0

0

0

0

0

Y

Y

1

HLA class I histocompatibility antigen, A-69 alpha chain

P10316

41

100

2

0

0

100

10

100

2

100

2

83

1

Y

Y

1

HLA class I histocompatibility antigen, B-51 alpha chain

P18464

41

0

0

0

0

100

2

0

0

0

0

0

0

Y

Y

1

HLA class I histocompatibility antigen, B-8 alpha chain

P30460

40

50

1

0

0

100

6

50

1

0

0

100

2

Y

Y

1

Integrin alpha-1

P56199

131

0

0

0

0

100

5

0

0

50

1

0

0

Y

Y

Y

1

Integrin alpha-2

P17301

129

0

0

0

0

100

16

0

0

0

0

0

0

Y

Y

Y

1

Integrin alpha-5

P08648

115

0

0

0

0

100

7

0

0

0

0

0

0

Y

Y

Y

1

Integrin alpha-V

P06756

116

50

1

50

1

100

23

0

0

0

0

0

0

Y

Y

Y

1

Integrin beta-1

P05556

88

100

10

100

12

100

21

0

0

100

5

100

3

Y

Y

Y

1

Integrin beta-3

P05106

87

0

0

0

0

100

8

0

0

0

0

0

0

Y

Y

Y

1

Leukocyte surface antigen CD47

Q08722

35

7

0

0

0

100

5

0

0

0

0

0

0

Y

Y

6

Lipolysis-stimulated lipoprotein receptor

Q86X29

71

0

0

0

0

100

3

0

0

0

0

0

0

Y

Y

1

Lutheran blood group glycoprotein

P50895

67

0

0

0

0

100

6

0

0

21

0

86

1

Y

Y

Y

1

Lysosome membrane protein 2

Q14108

54

100

4

50

1

100

13

100

2

100

6

100

5

Y

Y

2

Membrane-associated progesterone receptor component 1

O00264

22

100

4

100

7

100

8

100

2

50

1

100

2

Y

1

Membrane-associated progesterone receptor component 2

O15173

24

100

6

100

5

100

10

100

5

100

3

100

2

Y

1

Mitochondrial import receptor subunit TOM34

Q15785

35

98

1

0

0

0

0

100

5

0

0

0

0

Y

Y

0

Mitochondrial import receptor subunit TOM40 homolog

O96008

38

100

2

0

0

100

5

0

0

0

0

0

0

Y

0

Mitochondrial import receptor subunit TOM70

O94826

67

0

0

50

1

0

0

100

6

100

2

0

0

Y

2

Monocyte differentiation antigen CD14

P08571

40

0

0

0

0

100

6

0

0

50

1

0

0

Y

Y

0

Niemann–Pick C1 protein

O15118

142

0

0

0

0

100

5

0

0

0

0

0

0

Y

Y

2

Neutral amino acid transporter B(0)

Q15758

57

0

0

0

0

100

2

0

0

0

0

0

0

Y

Y

9

Platelet glycoprotein 4

P16671

53

0

0

0

0

100

2

0

0

0

0

0

0

Y

Y

Y

2

Poliovirus receptor

P15151

45

0

0

0

0

100

3

0

0

0

0

0

0

Y

Y

Y

1

Prohibitin-2

Q99623

33

100

13

50

1

100

14

100

12

100

4

86

1

Y

0

Protein CutA

O60888

19

100

2

0

0

50

1

0

0

0

0

0

0

Y

1

Receptor expression-enhancing protein 5

Q00765

21

100

6

100

3

100

3

0

0

50

1

100

2

Y

2

Receptor-type tyrosine-protein phosphatase-like N

Q16849

106

0

0

98

1

100

4

50

1

0

0

100

2

Y

Y

1

Renin receptor

O75787

39

0

0

0

0

100

3

50

10

0

0

0

0

Y

Y

Y

1

Ribosome-binding protein 1

Q9P2E9

152

100

28

100

3

50

1

100

21

100

10

0

0

Y

1

Signal recognition particle receptor subunit alpha

P08240

70

9

0

0

0

0

0

100

3

0

0

0

0

Y

0

Signal recognition particle receptor subunit beta

Q9Y5M8

30

100

2

0

0

100

2

100

7

0

0

100

2

Y

1

Sortilin

Q99523

92

0

0

0

0

100

12

0

0

50

1

0

0

Y

Y

Y

1

Sortilin-related receptor

Q92673

248

0

0

100

2

0

0

0

0

0

0

86

1

Y

Y

1

Sushi domain-containing protein 2

Q9UGT4

90

0

0

0

0

100

2

0

0

0

0

0

0

Y

Y

1

Tetraspanin-7

P41732

28

100

3

50

1

100

3

0

0

0

0

89

1

Y

Y

4

Tetraspanin-3

O60637

28

0

0

0

0

100

2

0

0

0

0

89

1

Y

4

Transferrin receptor protein 1

P02786

85

15

0

0

0

100

23

50

1

100

2

0

0

Y

Y

1

Translocation protein SEC62

Q99442

46

0

0

0

0

100

3

99

1

0

0

99

1

Y

2

Tyrosine-protein kinase-like 7

Q13308

118

0

0

0

0

100

2

0

0

0

0

0

0

Y

Y

2

Tyrosine-protein phosphatase non-receptor type 1

P18031

50

0

0

0

0

100

5

50

1

0

0

0

0

Y

Y

1

  1. Bold figures indicate accepted protein identities
  2. Y yes, the identified protein is annotated to the specified GO term, TMH transmembrane helix