FRONTIERS IN BIOSCIENCE CD Classification



Name

Other names

Family

M. W.

Expression

Functions

CD1a

CD1b

CD1c

CD1d

Ig superfamily (IgSF)

43-49

Cortical thymocytes, Langerhans cells, Dendritic cells, B cells (CD1c), Intestinal epithelium (CD1d)

MHC class I-like molecule, associated with b2-microglobulin. May have specialised role in antigen presentation

CD2

T11, LFA-2

IgSF

45-58

T cells, thymocytes, NK cells

Adhesion molecule, binding CD58 (LFA-3). Can activate T cells

CD2R

T11-3

IgSF

45-58

Activated T cells

activation-dependent conformational form of CD2

CD3

T3

IgSF (gde) z/h related to FcR g chain

g:25-28
d:20
e:20
z:16
h:22

Thymocytes, T cells

Associated with the T cell antigen receptor. Required for cell surface expression of and signal transduction by TCR.

CD4

T4, L3T4

IgSF

55

Thymocyte subsets, helper and inflammatory T cells (about two thirds of peripheral T cells), monocytes, macrophages

Coreceptor for MHC class II molecules. Binds lck on cytoplasmic face of membrane. Receptor for HIV-I and HIV-2 gp120.

CD5

T1, Ly1

Scavenger receptor

67

Thymocytes, T cells, subset of B cells

Binds to CD72

CD6

T12

Scavenger receptor

100-130

Thymocytes, T cells, B cell CLL

unknown.

CD7

IgSF

40

Pluripotential hematopoietic cells, thymocytes, T cells

unknown. Marker for T cell ALL and pluripotential stem cell leukemias

CD8

T8, Lyt2,3

IgSF

a: 32-34
b: 32-34

Thymocyte subsets, cytotoxic T cells (about one third of peripheral T cells)

Coreceptor for MHC class I molecules. Binds lck on cytoplasmic face of membrane

CD9

tetraspanning membrane protein

22-27

Pre-B cells, eosinophils, basophils, platelets

possible role in platelet aggregation and activation

CD10

Neutral endopeptidase, Common Acute Lymphocytic Leukemia Antigen (CALLA)

100

B and T cell precursors, bone marrow stromal cells

zinc metalloproteinase, marker for pre B ALL

CD11a

LFA-1

180

lymphocytes, granulocytes, monocytes and macrophages

aL subunit of integrin LFA-1 (associated with CD18) ; binds to CD54 (ICAM-1), ICAM-2 and ICAM-3

CD11b

Mac-1

170

myeloid and natural killer cells

aM subunit of integrin CR3 (associated with CD18) ; binds CD54, complement component iC3b and extracellular matrix proteins

CD11c

CR4,
p150, 95

150

myeloid cells

aX subunit of integrin CR4 (associated with CD18) ; binds fibrinogen

CDw12

90-120

monocytes, granulocytes, platelets

unknown

CD13

amino peptidase N

150-170

myelomonocytic cells

zinc metalloproteinase

CD14

53-55

myelomonocytic cells

receptor for complex of LPS and LPS binding protein (LBP)

CD15

& CD15S

Lewsi-x (Lex)

neutrophils, eosinophils, monocytes

branched pentasaccharide, expressed on glycolipids and many cell surface glycoproteins; the sialylated form is a ligand for CD62E (ELAM)

CD16

a & b

FcgRIII

IgSF

50-80

neutrophils, NK cells, macrophages

component of low affinity Fc receptor, FcgRIII, mediates phagocytosis and ADCC.

CDw17

neutrophils, monocytes, platelets

lactosyl ceramide, a cell surface glycosphingolipid

CD18

95

Leukocytes

integrin b2 subunit, associates with CD11a,b and c.

CD19

IgSF

95

B cells

forms complex with CD21 (CR2)and CD81 (TAPA-1); coreceptor for B cells

CD20

tetraspanning membrane protein

33-37

B cells

possible role in regulating B cell activation

CD21

CR2

complement control protein (CCP) superfamily

145

mature B cells, FDC

receptor for complement component C3d, EBV. With CD19 and CD81 forms coreceptor for B cells

CD22

BL-CAM

IgSF

a: 130
b: 140

mature B cells

Adhesion of B cells to monocytes, T cells

CD23

FceRII

C-type lectin

45

mature B cells, activated macrophages, eosinophils, follicular dendritic cells, platelets

low affinity receptor for IgE, ligand for CD19:CD21:CD81 coreceptor

CD24

possible human homologue of mouse Heat Stable Antigen (HSA) or J11d.

35-45

B cells, granulocytes

unknown

CD25

Tac

a:CCP b: cytokine receptor superfamily

a:55
:b75

activated T cells, B cells, monocytes

IL-2 receptor

CD26

Dipeptidyl peptidase IV

110

Activated B and T cells, macrophages

protease. Recently implicated in HIV entry into cells.

CD27

NGF receptor superfamily

50-55

Medullary thymocytes, T cells

unknown

CD28

Tp44

IgSF

44

T cell subsets, activated B cells

Activation of naive T cells, receptor for costimulatory signal (signal 2) binds CD80 (B7-1) and B7-2

CD29

130

Leukocytes

Integrin b1 subunit, associates with CD49a in VLA-1 integrin

CD30

Ki-1

NGF receptor superfamily

105-120

Activated B and T cells

unknown

CD31

PECAM-1

IgSF

130-140

monocytes, platelets, granulocytes, B cells, endothelial cells

Possibly an adhesion molecule

CDw32

FcgRII

IgSF

40

Monocytes, granulocytes, B cells eosinophils

low affinity Fc receptor for aggregated Ig/immune complexes

CD33

IgSF

67

myeloid progenitor cells, monocytes

unknown

CD34

105-120

hematopoietic precursors, capillary endothelium

Ligand for CD62 (L-selectin)

CD35

CR1

CCP superfamily

250

Erythrocytes, B cells, monocytes, neutrophils, eosinophils, FDC

Complement receptor 1, binds C3B and C4b, mediates phagocytosis

CD36

platelet GPIV

88

platelets, monocytes

unknown

CD37

tetraspanning membrane protein

40-52

mature B cells, mature T cells, myeloid cells

unknown

CD38

45

early B and T cells, activated T cells, germinal centre B cells, plasma cells

unknown

CD39

78

activated B cells, activated NK cells, macrophages, dendritic cells

unknown, may mediate adhesion of B cells

CD40

NGF receptor superfamily

50

B cells, monocytes, dendritic cells

receptor for costimulatory signal for B cells, binds CD40 Ligand (T-BAM),

CD41

125/22 dimer

platelets, megakaryocytes

aIIb integrin, associates with CD61 to form GPIIb, binds fibrinogen, fibronectin, von Willebrand factor and thrombospondin

CD42a,

b,c,d

a: GPIX
b: GPIba
c: GPIbb
d: GPV

a: 23
b: 135, 23
c: 22
d: 85

platelets, megakaryocytes

binds von Willebrand factor, thrombin; essential for platelet adhesion at sites of injury

CD43

leukosialin, sialophorin

115-135 (PMN)
95-115 (T cells)

leukocytes, except resting B cells

binds CD54 (ICAM-1)

CD44

Hermes antigen, Pgp-1

80-95

leukocytes, erythrocytes

binds hyaluronic acid, mediates adhesion of leukocytes

CD45

Leukocyte common antigen (LCA), T200, B220

180-240

leukocytes

tyrosine phosphatase, augments signalling through antigen receptor of B and T cells, multiple isoforms result from alternative splicing (see below)

CD45RO

180

T cell subsets, B cell subsets, monocytes, macrophages

isoform of CD45 containing none of the A, B and C exons

CD45RA

205-220

B cells, T cell subsets (naive T cells) monocytes

isoforms of CD45 containing the A exon

CD45RB

T200

190-220

T cell subsets, B cells, monocytes, macrophages, granulocytes

isoforms of CD45 containing the B exon

CD45RC

Restricted T200

CD46

MCP

CCP superfamily

56/66 (splice variants)

hematopoietic and non-hematopoietic nucleated cells

membrane cofactor protein, binds to C3b and C4b to permit their degradation by Factor I

CD47

47-52

all cells

unknown, associated with Rh blood group

CD48

Blast-1

IgSF

40-47

leukocytes

unknown

CD49a

VLA-1

210

activated T cells, monocytes

a1 integrin, associates with CD29, binds collagen, laminin

CD49b

VLA-2

165

B cells, monocyte, platelets

a2 integrin, associates with CD29, binds collagen, laminin

CD49c

VLA-3

125

B cells

a3 integrin, associates with CD29, bindslaminin, fibronectin

CD49d

VLA-4

150

B cells, thymocytes

a4 integrin, associates with CD29, binds fibronectin, PeyerÕs Patch HEV, VCAM-1

CD49e

VLA-5

135, 25 dimer

memory T cells, monocytes, platelets

a5 integrin, associates with CD29, binds fibronectin

CD49f

VLA-6

120, 25 dimer

memory T cells, thymocytes, monocytes

a6integrin, associates with CD29, binds laminin

CD50

ICAM3

130

thymocytes, T cells, B cells,monocytes, granulocytes

unknown

CD51

vitronectin receptor

125,24 dimer

platelets, megakaryocytes

av integrin, associates with CD61, binds vitronectin, von Willebrand factor, fibrinogen and thrombospondin

CD52

CAMPATH-1

21-28

thymocytes, T cells, B cells (not plasma cells), monocytes, granulocytes

unknown, target for antibodies used therapeutically to deplete T cells

CD53

MRC OX44

tetraspanning membrane protein

35-42

leukocytes

unknown

CD54

ICAM-1

IgSF

85-110

hematopoietic and non-hematopoietic cells

InterCellular Adhesion Molecule, (ICAM)-1 binds CD11a/CD18 (LFA-1) and CD11b/CD18 (Mac-1) integrins, receptor for rhinovirus

CD55

DAF

CCP superfamily

60-70

hematopoietic and non-hematopoietic cells

Decay Accelerating Factor (DAF), binds C3b, disassembles C3/C5 convertase

CD56

NKH-1

IgSF

175-185

NK cells

isoform of Neural Cell Adhesion Molecule (NCAM), adhesion molecule

CD57

HNK-1, Leu-7

NK cells subsets of T cells, B cells and monocytes

oligosaccharide, found on many cell surface glycoproteins

CD58

LFA-3

IgSF

55-70

hematopoietic and non-hematopoietic cells

Leukocyte Function-associated Antigen-3 (LFA-3), binds CD2, adhesion molecule

CD59

Protectin, Mac inhibitor

19

hematopoietic and non-hematopoietic cells

binds comlement components C8 and C9, blocks assembly of membrane attack complex

CD60

T cell subsets, platelets, monocytes

oligosaccharide present on gangliosides

CD61

105

platelets, megakaryocytes, macrophages

integrin b3 subunit, associates with CD41 (GPIIb/IIIa) or CD51 (vitronectin receptor)

CD62E

ELAM-1, E-selectin

C type lectin

140

endothelium

endothelium leukocyte adhesion molecule (ELAM), bindssialyl-Lewis x, mediates rolling interaction of neutrophils on endothelium

CD62L

LAM-1, L-selectin, LECAM-1

C type lectin

150

B cells, T cells, monocytes, NK cells

leukocyte adhesion molecule (LAM), binds CD34, GlyCAM, mediates rolling interactions with endothelium

CD62P

P-selectin, PADGEM

C type lectin

140

platelets, megakaryocytes, endothelium

adhesion molecule, binds sialyl Lewis x, mediates interaction of platelets with neutrophils, monocytes and rolling interaction of neutrophils on endothelium

CD63

tetraspanning membrane protein

53

activated platelets, monocytes, macrophages

unknown, is lysosomal membrane protein translocated to cell surface after activation

CD64

FcgRI

IgSF

72

monocytes, macrophages

hign affinity receptor for IgG

CD65

myeloid cells

oligosaccharide component of a ceramide dodecasaccharide

CD65s

Ceramide dodecasaccharide 4c

CD66a

biliary glycoprotein-1 (BGP-1)

IgSF

160-180

neutrophils

unknown, member of carcinoembryonic antigen (CEA) family (see below)

CD66b

previously CD67

IgSF

95-100

granulocytes

unknown, member of carcinoembryonic antigen (CEA) family

CD66c

Nonspecific Crossreacting Antigen (NCA)

IgSF

90

neutrophils, colon carcinoma

unknown, member of carcinoembryonic antigen (CEA) family

CD66d

IgSF

30

neutrophils

unknown, member of carcinoembryonic antigen (CEA) family

CD66e

CarcinoEmbryonic Antigen (CEA)

IgSF

180-200

adult colon epithelium, colon carcinoma

unknown, member of carcinoembryonic antigen (CEA) family

CD66f

Pregnancy specific glycoprotein

CD68

macrosialin

110

monocytes, macrophages, neutrophils, basophils, large lymphocytes

unknown

CD69

Activation Inducer Molecule (AIM)

28, 32 homo-dimer

activated B cells, activated T cells, activated macrophages, activated NK cells

unknown, early activation antigen

CD70

Ki-24

75,95,170

activated B cells, activated T cells, macrophages

unknown

CD71

T9

90-95 homo-dimer

activated leukocytes

transferrin receptor

CD72

Lyb-2

C type lectin

42 homo-dimer

B cells

unknown, ligand for CD5

CD73

69

B cell subsets, T cell subsets

ecto-5Õ-nucleotidase, dephosphorylates nucleotides to allow nucleoside uptake

CD74

Ii, Ig

33,35,41,43 (alternate initiation and splicing)

B cells, macrophages, monocytes, MHC class II positive cells

MHC class II associated Invariant chain

CDw75

mature B cells, T cell subsets

unknown, possibly oligosaccharide, dependent on sialylation

CDw76

mature B cells, T cell subsets

unknown, possibly oligosaccharide, dependent on sialylation

CD77

Gb3, Pk blood group

germinal center B cells

unknown,

CDw78

Ba

B cells

unknown

CD79a,

CD79b

Iga, Igb

IgSF

a: 32-33
b: 37-39

B cells

components of B cell antigen receptor analogous to CD3, required for cell surface expression and signal transduction

CD80

B7 (now B7-1), BB1

IgSF

60

B cell subset

costimulator, ligand for CD28 and CTLA-4

CD81

Target of AntiProliferative Antibody (TAPA-1)

tetraspanning membrane protein

26

lymphocytes

associates with CD19, CD21 to form B cell coreceptor

CD82

R2

tetraspanning membrane protein

50-53

leukocytes

unknown

CD83

HB15

43

Activated B cells, activated T cells, circulating dendritic cells (veil cells)

CDw84

GR6

73

monocytes, platelets, circulating B cells

CD85

GR4

120, 83

monocytes, circulating B cells

CD86

FUN-1, GR65

80

monocytes, activated B cells

CD87

UPA-R

50-65

granulocytes, monocytes, macrophages, activated T cells

Urokinase plasminogen activator receptor

CD88

C5aR

rhodopsin superfamily

40

polymorphonuclear leukocytes, macrophages, mast cells

Receptor for complement component C5a

CD89

FcaR

IgSF

50-70

monocytes, macrophages, granulocytes, neutrophils, B cell subsets, T cell subsets

IgA receptor

CD90

Thy-1

IgSF

18

CD34+ prothymocytes (human) thymocytes, T cells (mouse)

unknown

CD91

unknown

600

monocytes

a2 macroglobulin receptor

CDw92

GR9

70

neutrophils, monocytes, platelets, endothelium

unknown

CD93

GR11

120

neutrophils, monocytes, endothelium

unknown

CD94

KP43

43

T cell subsets, NK cells

unknown

CD95

Apo-1, Fas

NGF receptor superfamily

43

wide variety of cell lines in vivodistribution uncertain

binds TNF-like ligand, induces apoptosis

CD96

T cell ACTivation Increased Late Expression (TACTILE)

160

activated T cells

Unknown

CD97

GR1

74, 80, 90

activated cells

unknown

CD98

4F2

80, 40

T cells, B cells, NK cells, granulocytes, all human cell lines

unknown

CD99

MIC2, E2

32

Peripheral blood lymphocytes, thymocytes

Unknown

CD100

GR3

150

Broad expression on haematopoietic cells

unknown

CD101

BPC#4,BB27;BA27

140

Granulocytes, macrophages

Unknown

CD102

ICAM-2

IgSF

55-65

Resting lymphocytes, monocytes, strongest on vascular endothelial cells

binds CD11a/CD18 (LFA-1) but not CD11b/CD18 (Mac-1)

CD103

HML-1, a6, aE integrin

150,25

Intraepithelial lymphocytes, 2-6% of peripheral blood lymphocytes

aE integrin

CD104

b4, b4 integrin

220

Epithelia, Schwann cells, some tumour cells

b4 integrin

CD105

Endoglin

95, homo-dimer

Endothelial cells, bone marrow cell subset, in vitro activated macrophages

unknown, possibly ligand for an integrin

CD106

VCAM-1

IgSF

100,110

Endothelial cells

Adhesion molecule, ligand for VLA-4

CD107a

Lysosomal Associated Membrane Protein-1 (LAMP-1)

110

Activated platelets

Unknown, is lysosomal membrane protein translocated to the cell surface after activation

CD107b

LAMP-2

120

activated platelets

Unknown, is lysosomal membrane protein translocated to the cell surface after activation

CDw108

GR2

80

Activated T cells in spleen, some stromal cells

Unknown

CD109

Platelet activation factor, GR56

170/50

Activated T cells, platelets, endothelial cells

Unknown

CD114

G-CSF receptor

CD115

M-CSFR, c-fms

IgSF

150

monocytes, macrophages

Macrophage Colony Stimulating Factor (M-CSF) receptor

CD116

GM-CSFRa

cytokine receptor superfamily

70-85

monocytes, neutrophils,eosinophils, endothelium

Granulocyte, Macrophage Colony Stimulating Factor (GM-CSF) receptor a chain

CD117

c-kit

IgSF tyrosine kinase

145

hematopoietic progenitors

Stem Cell Factor (SCF) receptor

CD118

IFNa,bR

Broad cellular expression

Interferon a, b receptor

CD119

IFNgR

90-100

marophages, monocytes, B cells, endothelium

Interferon g receptor

CD120a

TNFR-I

NFG receptor superfamily

50-60

hematopoietic and non-hematopoietic cells, highest on epithelial cells

TNF receptor, binds both TNFa and TNFb

CD120b

TNFR-II

NFG receptor superfamily

75-85

hematopoietic and non-hematopoietic cells, highest on myeloid cells

TNF receptor, binds both TNFa and TNFb

CD121a

IL-1R type I

IgSF

80

thymocytes ,T cells

type I interleukin 1 receptor, binds IL-1a and IL-1b

CDw121b

IL-1R, ytpe II

IgSF

60-70

B cells, macrophages, monocytes

type II interleukin 1 receptor, binds IL-1a and IL-1b

CD122

IL-2Rb

75

Natural killer cells, resting T cell subpopulation, some B cell lines

IL-2 receptor b chain

CDw123

IL-3R

cytokine receptor superfamily fibronectin type III superfamily

70

Bone marrow stem cells, granulocytes, monocytes, megakaryocytes

IL-3 receptor a chain

CD124

IL-4R

cytokine receptor superfamily fibronectin type III superfamily

130-150

Mature B and T cells, haematopoietic precursor cells

IL-4 receptor

CDw125

IL-5R

cytokine receptor superfamily fibronectin type III superfamily

55-60

Eosinophils, basophils

IL-5 receptor

CD126

IL-6R

IgSF cytokine receptor superfamily fibronectin type III superfamily

80

Activated B cells and plsama cells, weak on most leukocytes

IL-6 receptor a subunit

CD127

IL-7R

fibronectin type III superfamily

68-79, possibly forms homodimers

Bone marrow lymphoid precursors, pro-B cells, mature T cells,monocytes

IL-7 receptor

CDw128

IL-8R

rhodopsin superfamily

58-67

Neutrophils, basophils, T cell subset

IL-8 receptor

CDw130

IL-6rb

IgSF
cytokine receptor superfamily
fibronectin type III superfamily

130

Activated B cells and plasma cells; weak on most leukocytes; endothelial cels

IL-6 receptor b subunit

CDw131

IL-3R common beta chain

95-120

monocytes, granulocytes,

eosinophils, B cells,

B and T cell growth

CD132

common gamma chain

64

T and B cells, fibroblasts haematopoietic precursors

B and T cell growth

CD134

OX-40

48-50

activated T cells

adhesion activated T cells;ligand for gp34

CD135

FLT3/FLK2

130-150

CD34 cells, carcinoma cells

receptor tyrosine kinase

CDw136

MSP-R

180

receptor tyrosine kinase

CDw137

4-1BB

30

T cells

co-stimulatory T cell activation

CD138

syndecan-1

plasma cells; syndecan 1

ligand for collagen type 1

CD139

CD140a

180

PDGFRa

CD140b

180

PDGFRb

CD141

Thrombomodulin

100

myeloid cells, endothelial cells, smooth muscle cells

myeloid thrombin receptor; regulation of coagulation

CD142

Tissue Factor

45

monocytes, endothelial cells

receptor for clotting factor VII, inhibits clotting

CD143

Angiotensin converting enzyme (ACE)

170

endothelial and epithelial cells

peptidyl-peptidase, ACE

CD144

VE-Cadherin

135

endothelial cells

adhesion molecule;role in cell-cell adhesion

CDw145

endothelial cells

CD146

MUC18, S-endo

113-118

endothelial cells, melanoma cells, follicular dendritic cell

homing of activated T cells

CD147

Neurothelin, basoglin

endothelial cells, myeloid cells, lymphocytes

CD148

HPTP-eta, p260

CDw149

MEM-133

CDw150

SLAM(surface lymphocyte activation marker)

75-95

T and B cells

signalling molecule

CD151

PETA-3

CD152

CTLA-4

44

T cells

neg. regul. for T cells co stimul;ligand CD80,86

CD153

CD30L

40

T cells

co-stimulatory for T cells; ligand for CD30

CD154

CD40L, T-BAM

TNF

32-39

T cells

co-stimulatory molecule; ligand for CD40

CD155

Polio virus receptor (PVR)

CD156

ADAM8

CD157

MO-5, BST-1

CD158a

p58.1

58/50

T cells

inhibition of cytotox; class-I specific NK-receptor

CD158b

p58.2

58/50

T cells

inhibition of cytotox; class-I specific NK-receptor

CD158c

p58.3

55-58

T cells

activating molecule;member of Ig superfamily

CD161

NKRP-1A

60

NK cells

regulation of NK cell-mediated cytotoxicity

CD162

P-selectin glycoprotein ligand-1 (PSGL-1)

240

monocytes, granulocytes, T cells, subset of B cells

adhesion molecule;leucocyte rolling; ligand P-selectin

CD163

GHI/61, M130

CD164

MGC-24

80

myeloid cells, T cells, epithelial cells, bone marrow stroma cells

adhesion molecule haem progenitor cells to stroma

CD165

AD2, gp37, A108

37

T cells, NK cells, platelets, thymocytes, thymic epithelium

adhesion molecule thymocytes/thymic epithelium

CD166

ALCAM

100

T cells, NK cells, platelets, thymocytes, activated B and T cells, eosinophils, fibroblasts, endothelial cells, keratinocytes

adhesion molecule; ligand for CD6