The Transporter Page

with official gene symbols (update: july-2000)

Uptake transporters
Solute carrier family 10
Name Species mRNA AA Mr Chromosome Assession-Nr Homology Expression Localization
NTCP
SLC10A1
human 1.7 349 50 14q24.1- 24.2 NM_003049 with L basolateral
Ntcp rat 1.8 362 51 6q24 M77479 77% (NTCP) L basolateral
ISBT
SLC10A2
human 1.2 348 48 13q33 NM_000452   I apical
Isbt rat 1.2 348 48 ? U07183   I apical
Solute carrier family 22
Name Species mRNA AA Mr Chromosome Assession-Nr Homology Expression Localization
OCT1
SLC22A1
human 1.9 554 62 6q26 NM_003057 80% (rOct1) L,K basolateral
Oct1 mouse       17        
Oct1 rat 1.9/3.4 556 62 1q11-12 X78855 with L,K basolateral
OCT2
SLC22A2
human 2 554 ? 6q26 NM_003058 70% (OCT1) K ?
Oct2 mouse     ? 17       ?
Oct2 rat 2.1 593 ? ? D83044 67% (rOct1) K ?
OCT3
SLC22A3
human 3.5?     6q26-q27 AF078749     ?
Oct3 mouse 3.5?     17 AF078748   P,I,B ?
Oct3 rat 3.5 551 62? ? AF055286   P,I,B ?
OCTN1
SLC22A4
human 2.1 551 ? 5 NM_003059   widely ?
OCTN2
SLC22A5
human 3.5 557 ? 5q31 NM_003060 75.8%
(OCTN1)
widely ?
OCTL3 human >2.6 551   3p21/22 NM_004256   widely ?
OCTL4 human >2.2 594   3p21/22 NM_004803   widely ?
Octn2
ct1
rat 3.0 557 ? ? AB017260 85%
(OCTN2)
K,L,Co ?
USTr1 rat 2.6 552 62? ? Y09945     ?
Rst mouse 1.8 553 ?   AB005451 30% (rOct1) K  
OAT-1
SLC22A6
human 1.6 550 ? 11q13.1 NM_004790 38% (OCT1) K basolateral
Oat-1 rat 2.2 551 ? ? AB004559   K basolateral
Oat-1 mouse 2.5 546 ? 19 U52842 93% (rOat1) K basolateral
OAT-2
SLC22A7
human 2.1 548 ? ? NM_006672 42% (OAT1) L basolateral?
Oat-2 rat 2.0 535 ? ? L27651
L30107
42% (rOat1) L basolateral?
OAT-3
SLC22A8
human 1.7 568 ? 11q11-q12 NM_004254   K basolateral?
Oat-3 mouse 2 537 ? 19 AF078869 84% (OAT3) K basolateral?
Solute carrier family 21
Name Species mRNA AA Mr Chromosome Assession-Nr Homology Expression Localization
SLC21A1 human         ?      
Slc21a1
Oatp1
rat 2.7 670 80   L19031 67% (OATP-A) L basolateral
Slc21a1
Oatp1
mouse 2.01 670 80 XA3-A5 NM_013797
NP_038825
81% (rOatp1) L basolateral
SLC21A2
PGT
human 4.2/2.3 643 ? 3q21 NM_005630
NP_005621
82% (Pgt) widely basolateral?
Slc21a2 rat 4.7/4 643 ?   M64862 37% (rOatp1) widely basolateral?
SLC21A3
OATP-A, OATP
human 2.7 670 80 12p12 NM_005075
NP_005066
  BBB basolateral
SLC21A4 human         ?      
Slc21a4
Oat-K1/K2
rat >2.8 669 ? ? D79981
AB012662
72% (rOatp1) K apical
SLC21A5 human         ?      
Slc21a5
Oatp2
rat 3.64 661 80 ? U88036 77% (rOatp1) L basolateral
SLC21A6
OATP-C, LST-1
human >2.5 691 ? 12 NM_006446
NP_006437
  L basolateral?
SLC21A7 human         ?      
Slc21a7
Oatp3
rat 2.5 670 80 ? AF041105   I basolateral?
SLC21A8 human         ?      
SLC21A9
OATP-B
human >2.4 709 ? 11q13 NM_007256
NP_009187
  BBB basolateral?
SLC21A10 human         ?      
Slc21a10
Oatp4, Lst-1
rat 3.2 687 ? ? AJ271682
CAB92299
  L basolateral?
SLC21A11
OATP-D
human 2.7 710 ? 15q26 NM_013272
NP_037404
  kidney basolateral
SLC21A12 human         ?      
SLC21A13 human         ?      
Slc21a13
Oatp5
rat 2.5 670   ? AF053317      
SLC21A14
OATP-F
human 3 712   12 NM_017435
NP_059131
     
Export (ABC)-transporters (see also here!)
MDR/TAP (ABC subfamily B)
Name Species mRNA AA Mr Chromosome Assession-Nr Homology Expression Localization
MDR1
ABCB1
human 4.5 1280 170 7q21 NM_000927
M14758 
(G->V)
78% (Mdr1b) L,K,I,BBB apical
Mdr1a
Abcb1a
mouse 4.3 1276 170 5 M33581 82.2% (MDR1) L,K,I,BBB apical
Mdr1a
Abcb1a
rat 4.3 1272 170 4q11-12 AF257746 83% (MDR1) L,K,I,BBB apical
Mdr1b
Abcb1b
mouse 4.3 1276 170 5 M14757 84.2% (Mdr1a) L,Lu,I apical
Mdr1b
Abcb1b
rat 4.3 1277 170 4q11-12 M62425 79% (MDR1) L,Lu,I apical
MDR2/3
ABCB4
human 4.5 1279 170 7q21 NM_000443 74.9% (MDR1) L apical
Mdr2
Abcb4
mouse 4.5 1276 170 ? J03398 69.4% (Mdr1b) L apical
Mdr2
Abcb4
rat 4.5 1278 170 4q11-12 L15079 72.1% (Mdr1b) L apical
BSEP
ABCB11
human 5.4 1321 170 2q24 NM_003742 88% (rat) L apical
Bsep
Abcb11
mouse 5 1321 160 2 AF133903 94% (rat)
89% (human)
L apical
Bsep
Abcb11
rat 5.4 1321 160 ? U69487
AF010597
48% (Mdr2) L apical
CFTR/MRP (ABC subfamily C)
Name Species mRNA AA Mr Chromosome Assession-Nr Homology Expression Localization
MRP1
ABCC1
human 6.5 1531 190 16p13.12-13 NM_004996 19% (CFTR) widely lateral
Mrp1
Abcc1
mouse 6-6.2 1528 185 ? AF022908 84% (MRP1) widely lateral
MRP2
ABCC2
human 6.5 1545 200 10q24 NM_000392 46% (MRP1) L,K,I apical
Mrp2
Abcc2
rat 6.5 1541 200 ? L49379
X96393
D86086
48% (MRP1) L,K,I apical
MRP3
ABCC3
human 6.5 1527 200 17q21.3 NM_003786 58% (MRP1) L,K,I basolateral
Mrp3
Abcc3
rat 6.5 1523 ? ? AB010467
U73038
AF072816
- L,K,I basolateral
MRP4
ABCC4
human >4.2 1325 ? 13q31/32 NM_005845 -   ?
MRP5
ABCC5
human 6.6? 1437 ? 3q27 NM_005688 -   ?
Mrp5
Abcc5
mouse 5.4 1436 ? ? AB019003     ?
Mrp5
Abcc5
rat 5.75 1436 ? ? AB020209     ?
MRP6
ABCC6
human 6.5 (4.5) 1503 ? 16p13 AF076622 - L,I lateral
Mrp6
Abcc6
mouse 5 1498 ? ? AB028737   L,I lateral
Mrp6
Abcc6
rat 5.8 1502 ? ? AB010466
U73038
- L,I lateral

modified from M. Müller and P.L.M. Jansen:
Molecular aspects of hepatobiliary transport (Am.J.Physiol. 272, G1285 - G1303, 1997)

with helpful comments from Bruno Hagenbuch.

  Links

Human Genome
Nomenclature
ABC-transporter
Nomenclature
Genetic Maps of the
Rat Genome
The rat genome database
MGD OMIA EcoCyc SGD
The Swine Genome Map Flybase C. elegans Zebrafish
GDB Human ESTs MIPS  EMBL WWW Services
OMIM LocusLink GENATLAS GeneCards
Basic Blast ExPasy Tools TRANSFAC PubMed
Paul Watkins Lab (some informations on transporter specificity)
The Yeast Transport Protein Database Milton Saier's
Transport Protein Classification
E. Coli   ABC TRANSPORTER ATPase MOTIF II/III Whitehead Institute for Biomedical Research 

10-20-1996 by MM
update 7-2000
© M. Müller