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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Slc11a2mk
microcytic anemia
MGI:1856400
Summary 5 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Slc11a2mk/Slc11a2mk 129S6.MK-Slc11a2mk MGI:3578663
hm2
Slc11a2mk/Slc11a2mk involves: C57BL/6J * DBA/2J * WB/Re MGI:3767059
hm3
Slc11a2mk/Slc11a2mk MK/ReJ MGI:3578662
hm4
Slc11a2mk/Slc11a2mk SEC.Cg-Slc11a2mk MGI:4820598
cx5
Hfetm2Nca/Hfetm2Nca
Slc11a2mk/Slc11a2mk
involves: 129S6/SvEvTac * C57BL/6J * MK/ReJ MGI:2655485


Genotype
MGI:3578663
hm1
Allelic
Composition
Slc11a2mk/Slc11a2mk
Genetic
Background
129S6.MK-Slc11a2mk
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Slc11a2mk mutation (2 available); any Slc11a2 mutation (38 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
N
• Background Sensitivity: nearly 100% survival to adulthood on a 129S6.Mk/ReJ background

homeostasis/metabolism
• liver non-heme iron levels higher than in knock-out mice

liver/biliary system
• liver non-heme iron levels higher than in knock-out mice




Genotype
MGI:3767059
hm2
Allelic
Composition
Slc11a2mk/Slc11a2mk
Genetic
Background
involves: C57BL/6J * DBA/2J * WB/Re
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Slc11a2mk mutation (2 available); any Slc11a2 mutation (38 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• red blood cell protoporphyrin levels are higher than in controls

homeostasis/metabolism
• red blood cell protoporphyrin levels are higher than in controls




Genotype
MGI:3578662
hm3
Allelic
Composition
Slc11a2mk/Slc11a2mk
Genetic
Background
MK/ReJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Slc11a2mk mutation (2 available); any Slc11a2 mutation (38 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cellular
• homozygous embryos of homozygous mothers have a higher proportion of erythrocytes with pale stain for hemoglobin than do those of heterozygous mothers

mortality/aging
• many homozygotes die between 1 and 3 weeks of age (J:5167)
• Background Sensitivity: only 10% survive to weaning on the MK/ReJ background (J:98088)

hematopoietic system
• mean splenic weight in adults is 206mg versus 88mg in heterozygotes
• homozygotes can be identified at birth by their pale color due to the small erythrocytes with diminished hemoglobin content, although the red cell counts are not significantly lower than normal (J:5167)
• at 6 and 8 weeks of age all homozygotes have considerably increased erythrocyte numbers with low mean cell volumes
• homozygotes from 10-30 weeks of age have a mean hematocrit of 38.9% while 10-20 week old heterozygous controls have a mean hematocrit of 49.7%
• severely decreased in adults and as early as embryonic day 15 hemoglobin stain is pale in an abnormally high proportion of erythrocytes (J:5167)
• Background Sensitivity: hemoglobin concentration in circulating blood ranges from 8.2 to 10.6 g/ml compared with 16.1 to 17.0 in wildtype controls (J:162917)
• found as early as embryonic day 15 and persisting into adulthood
• homozygotes from 10-30 weeks of age have 5.3-28% reticulocytes compared with 10-20 week old heterozygotes with 1.1-5.2% reticulocytes (J:5167)
• reticulocyte concentration of 15-23% compared with 3-4% in wild-type controls (J:162917)
• mean red blood cell lifespan of 24 days compared with 45 days in controls

homeostasis/metabolism
• decrease in total iron uptake and a decrease in the incorportation of iron into heme by reticulocytes
• intraerythroid defects in iron metabolism with the erythrocyte zinc protoporphrin IX to heme (Znpp/H) ratio increased by 3.2 fold

immune system
• mean splenic weight in adults is 206mg versus 88mg in heterozygotes

reproductive system

growth/size/body
• although normal in weight at birth, by 1 week of age homozygotes have a lower body weight than heterozygous controls and this persists into adulhood
• mean splenic weight in adults is 206mg versus 88mg in heterozygotes

liver/biliary system
N
• no evidence of jaundice

integument
• homozygotes can develop skin lesions in the postnatal period




Genotype
MGI:4820598
hm4
Allelic
Composition
Slc11a2mk/Slc11a2mk
Genetic
Background
SEC.Cg-Slc11a2mk
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Slc11a2mk mutation (2 available); any Slc11a2 mutation (38 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• many homozygotes die between 1 and 3 weeks of age

cellular
• homozygous embryos of homozygous mothers have a higher proportion of erythrocytes with pale stain for hemoglobin than do those of heterozygous mothers

hematopoietic system
• homozygotes can be identified at birth by their pale color due to the small erythrocytes with diminished hemoglobin content, although the red cell counts are not significantly lower than normal (J:5167)
• at 6 and 8 weeks of age all homozygotes have considerably increased erythrocyte numbers with low mean cell volumes
• at 8 weeks of age females have a mean hematocrit of 38.9% compared with 48.5% in heterozygous controls and males have a mean hematocrit of 40.3% compared with 50% in heterozygous controls
• decreased in females from 17.1g in heterozygous controls to 20.6g per 100 cc blood and in males from 17.8g in heterozygous controls to 11.2g per 100cc blood (J:5167)
• as early as embryonic day 15 hemoglobin stain is pale in an abnormally high proportion of erythrocytes (J:5167)
• Background Sensitivity: hemoglobin concentration in circulating blood ranges from 6.1 to 7.8 g/ml compared with 16.1 to 17.0 in wildtype controls (J:162917)
• decreased from 17.4g to 8g per 100cc packed red cells in females and from 16.3g to 8g per 100cc packed red cells in males
• found as early as embryonic day 15 and persisting into adulthood
• reticulocyte concentration of 15-23% compared with 3-4% in wild-type controls (J:162917)
• Background Sensitivity: mean red blood cell lifespan of 15 days compared with 45 days in controls, with splenectomy increasing red blood cell lifespan to 23 days
• the red blood cell population contains a smaller population of osmotically sensitive cells and a larger population of osmotically resistant cells

growth/size/body
• although normal in weight at birth, by 1 week of age homozygotes have a lower body weight than heterozygous controls and this persists into adulhood

immune system

reproductive system

liver/biliary system
N
• no evidence of jaundice

integument
• homozygotes can develop skin lesions in the postnatal period




Genotype
MGI:2655485
cx5
Allelic
Composition
Hfetm2Nca/Hfetm2Nca
Slc11a2mk/Slc11a2mk
Genetic
Background
involves: 129S6/SvEvTac * C57BL/6J * MK/ReJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hfetm2Nca mutation (1 available); any Hfe mutation (34 available)
Slc11a2mk mutation (2 available); any Slc11a2 mutation (38 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• some mice die prior to weaning
• increased viability relative to Slc11a2mk homozygous mutant mice

homeostasis/metabolism
• hepatic iron levels similar to those observed in Slc11a2mk homozygous mutant mice

liver/biliary system
• hepatic iron levels similar to those observed in Slc11a2mk homozygous mutant mice





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last database update
05/07/2024
MGI 6.23
The Jackson Laboratory