SLC11: The proton coupled metal ion transporter family

Human Gene

Name

Protein

Name

Aliases

Predominant Substrates

Transport type /Coupling ions*

 

Tissue distribution and cellular/ subcellular expression

 

Link to disease#

Human gene locus

Sequence

Accession

ID

Splice variants and their specific features

SLC11A1

NRAMP1

NRAMP

LSH

Mn2+, Fe2+, and other divalent metal ions

C / H+

Phagolysosomes of phagocytes (macrophages, neutrophils)

Polymorphisms linked to susceptibilityG to bacterial infections (e.g. tuberculosis, leprosy), and to autoimmune diseases (e.g. Crohn’s disease)

 

2q35

NM_000578

 

SLC11A2

DMT1

NRAMP2

DCT1

Fe2+, Cd2+, Co2+, Cu1+, Mn2+

C / H+

Widespread, including intestine, erythroid cells, kidney, lung, brain, testis (Sertoli cells), thymus

 

Hereditary hemochromatosisA

12q13

NM_000617

Multiple splice forms (from 1A or 1B exons at 5 end, and with or without the 3 iron-responsive element) are discretely distributed and may be subject to separate control mechanisms

*) C: Cotransporter
 #)G: Genetic defect
A: Acquired defect (due to genetic defects in the HFE gene)


§IREG1 (also known as Ferroportin-1, MTP1, or FPN1) was previously assigned to SLC11A3. However, IREG1 bears no significant homology with SLC11A1 and SLC11A2, and has been therefore reassigned to SLC40A1.

                                                                                                                                                

References:

Original version of the SLC table:


Mackenzie B, Hediger MA. SLC11 family of H(+)-coupled metal-ion transporters NRAMP1 and DMT1. Pflugers Arch. 2004 Feb;447(5):571-9.