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HomoloGene Vertebrate Homology
Class ID
HomoloGene (Release 68, May 6, 2014)

Comparative GO Graph (mouse, human, rat)  
MGI HomoloGene Information
Species Symbol Gene Links Genetic Location Genome Coordinates
(mouse and human only)
Associated Human Diseases Sequences
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human TTC21B HGNC:25660 (HGNC)
79809 (Entrez Gene)
612014 (OMIM)
HGNC homology
Chr2 q24.3 Chr2:165873362-165953838 (-)
asphyxiating thoracic dystrophy 4
nephronophthisis 12
Q7Z4L5 (UniProt | EBI)
NM_024753 (RefSeq)
mouse Ttc21b MGI:1920918 (MGI)
73668 (Entrez Gene)
Gene Tree
HGNC homology
Chr2 39.08 cM Chr2:66184327-66256617 (-)
OTTMUSG00000012999 (VEGA)
OTTMUSP00000014010 (VEGA)
OTTMUST00000031324 (VEGA)
rat Ttc21b 295654 (Entrez Gene)
Chr3 q21 NP_001178666 (RefSeq)
NM_001191737 (RefSeq)
chimpanzee TTC21B 740725 (Entrez Gene)
Chr2B XP_009441902 (RefSeq)
cattle TTC21B 527412 (Entrez Gene)
Chr2 NP_001095578 (RefSeq)
NM_001102108 (RefSeq)
dog TTC21B 608674 (Entrez Gene)
Chr36 XP_850862 (RefSeq)
chicken TTC21B 424176 (Entrez Gene)
Chr7 XP_015145227 (RefSeq)
zebrafish ttc21b 569823 (Entrez Gene)
Chr9 NP_001121730 (RefSeq)
NM_001128258 (RefSeq)
frog, western clawed ttc21b 100490430 (Entrez Gene)
Chr9 XP_017953063 (RefSeq)
macaque, rhesus TTC21B 707811 (Entrez Gene)
Chr12 XP_001096248 (RefSeq)
MGI HomoloGene Information

MGI loads vertebrate homology data from NCBI HomoloGene, which programmatically detects homologs among the genome features of completely sequenced eukaryotic genomes (see: HomoloGene Build Procedure).

MGI includes homology for the following selected vertebrate species from HomoloGene:
 - human
 - mouse
 - rat
 - cattle
 - chicken
 - chimpanzee
 - dog
 - monkey, Rhesus
 - western clawed frog (Xenopus tropicalis)
 - zebrafish

These are a subset of the total species represented in HomoloGene Classes at NCBI.
Additional species may be present in an NCBI HomoloGene Class than appear in MGI.

Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Tumor Biology (MTB), Gene Ontology (GO), MouseCyc
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last database update
MGI 6.12
The Jackson Laboratory