| 1352340 | LETM1 | leucine zipper and EF-hand containing transmembrane protein 1 | This gene encodes a protein that is localized to the inner mitochondrial membrane. The protein functions to maintain the mitochondrial tubular shapes and is required for normal mitochondrial morphology and cellular viability. Mutations in this gene cause Wolf-Hirschhorn syndrome, a complex malformat ion syndrome caused by the deletion of parts of the distal short arm of chromosome 4. Related pseudogenes have been identified on chromosomes 8, 15 and 19. [provided by RefSeq, Oct 2009] | 4 | 1811479 | 1856156 | Human | 321 | symbol , old_gene_name , COSMIC , Human Proteome Map | gene, protein-coding, REVIEWED [RefSeq] |
| 1359678 | Letm1 | leucine zipper and EF-hand containing transmembrane protein 1 | ENCODES a protein that exhibits calcium:proton antiporter activity (ortholog); INVOLVED IN calcium export from the mitochondrion (ortholog); calcium ion transport (ortholog); cristae formation (ortholog); ASSOCIATED WITH Craniofacial Abnormalities (ortholog); Developmental Disabilities (ortholog); E pendymomas (ortholog); FOUND IN mitochondrial inner membrane (ortholog); mitochondrion (ortholog); INTERACTS WITH 6-propyl-2-thiouracil; amitrole; amphetamine | 14 | 81167268 | 81206776 | Rat | 166 | symbol , old_gene_name , PhenoGen | gene, protein-coding, PROVISIONAL [RefSeq] |
| 1553847 | Letm1 | leucine zipper-EF-hand containing transmembrane protein 1 | Enables calcium:proton antiporter activity. Involved in calcium export from the mitochondrion; mitochondrial calcium ion homeostasis; and protein complex oligomerization. Located in mitochondrial inner membrane. Is expressed in brain; embryo; gonad; liver; and seminiferous cord. Orthologous to human LETM1 (leucine zipper and EF-hand containing transmembrane protein 1). [provided by Alliance of Genome Resources, Jul 2025] | 5 | 33897017 | 33940061 | Mouse | 169 | symbol , old_gene_name , PhenoGen , description | gene, protein-coding, VALIDATED [RefSeq] |
| 8945824 | Letm1 | leucine zipper and EF-hand containing transmembrane protein 1 | ENCODES a protein that exhibits calcium:proton antiporter activity (ortholog); INVOLVED IN calcium export from the mitochondrion (ortholog); calcium ion transport (ortholog); cristae formation (ortholog); ASSOCIATED WITH Craniofacial Abnormalities (ortholog); Developmental Disabilities (ortholog); E pendymomas (ortholog); FOUND IN mitochondrial inner membrane (ortholog); mitochondrion (ortholog) | NW_004955514 | 1040103 | 1069297 | Chinchilla | 41 | symbol , old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 11728464 | LETM1 | leucine zipper and EF-hand containing transmembrane protein 1 | ENCODES a protein that exhibits antiporter activity (inferred); calcium ion binding (inferred); calcium:proton antiporter activity (inferred); INVOLVED IN protein hexamerization (ortholog); protein homooligomerization (ortholog); ASSOCIATED WITH Craniofacial Abnormalities (ortholog); Developmental D isabilities (ortholog); Ependymomas (ortholog); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred) | 4 | 1953033 | 1994958 | Bonobo | 45 | symbol , old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 12140035 | LETM1 | leucine zipper and EF-hand containing transmembrane protein 1 | ENCODES a protein that exhibits antiporter activity (inferred); calcium ion binding (inferred); calcium:proton antiporter activity (inferred); INVOLVED IN calcium export from the mitochondrion (inferred); calcium ion transport (inferred); cristae formation (inferred); ASSOCIATED WITH Craniofacial Ab normalities (ortholog); Developmental Disabilities (ortholog); Ependymomas (ortholog); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred) | 3 | 62268027 | 62304767 | Dog | 48 | symbol , old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 12668986 | Letm1 | leucine zipper and EF-hand containing transmembrane protein 1 | ENCODES a protein that exhibits antiporter activity (inferred); calcium ion binding (inferred); calcium:proton antiporter activity (inferred); INVOLVED IN calcium export from the mitochondrion (inferred); calcium ion transport (inferred); cristae formation (inferred); ASSOCIATED WITH Craniofacial Ab normalities (ortholog); Developmental Disabilities (ortholog); Ependymomas (ortholog); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred) | NW_004936477 | 21550104 | 21589662 | Squirrel | 45 | symbol , old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 13882842 | LETM1 | leucine zipper and EF-hand containing transmembrane protein 1 | ENCODES a protein that exhibits antiporter activity (inferred); calcium ion binding (inferred); calcium:proton antiporter activity (inferred); INVOLVED IN calcium export from the mitochondrion (inferred); calcium ion transport (inferred); cristae formation (inferred); ASSOCIATED WITH Craniofacial Ab normalities (ortholog); Developmental Disabilities (ortholog); Ependymomas (ortholog); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred); INTERACTS WITH deoxynivalenol | | | | Pig | 49 | symbol , old_gene_name | gene, protein-coding, VALIDATED [RefSeq] |
| 14380558 | Letm1 | | | | | | Fly | | symbol | gene, null |
| 18658814 | LETM1 | leucine zipper and EF-hand containing transmembrane protein 1 | ENCODES a protein that exhibits antiporter activity (inferred); calcium ion binding (inferred); calcium:proton antiporter activity (inferred); INVOLVED IN calcium export from the mitochondrion (inferred); calcium ion transport (inferred); cristae formation (inferred); ASSOCIATED WITH Craniofacial Ab normalities (ortholog); Developmental Disabilities (ortholog); Ependymomas (ortholog); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred) | | | | Green Monkey | 45 | symbol , old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 18922838 | Letm1 | leucine zipper and EF-hand containing transmembrane protein 1 | ENCODES a protein that exhibits antiporter activity (inferred); calcium ion binding (inferred); calcium:proton antiporter activity (inferred); INVOLVED IN cristae formation (ortholog); inner mitochondrial membrane organization (ortholog); mitochondrial calcium ion transmembrane transport (ortholog); ASSOCIATED WITH Craniofacial Abnormalities (ortholog); Developmental Disabilities (ortholog); Ependymomas (ortholog); FOUND IN mitochondrion (ortholog) | | | | Naked Mole-Rat | 44 | symbol , old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 155240646 | letm1 | | | | | | Tropical Clawed Frog | | symbol | gene, null |
| 625918245 | Letm1 | leucine zipper and EF-hand containing transmembrane protein 1 | ENCODES a protein that exhibits calcium:proton antiporter activity (ortholog); INVOLVED IN calcium export from the mitochondrion (ortholog); calcium ion transport (ortholog); cristae formation (ortholog); ASSOCIATED WITH Craniofacial Abnormalities (ortholog); Developmental Disabilities (ortholog); E pendymomas (ortholog); FOUND IN mitochondrial inner membrane (ortholog); mitochondrion (ortholog) | | | | Black Rat | 41 | symbol | gene, protein-coding, MODEL [RefSeq] |
| 155248506 | letm1.L | | | | | | African Clawed Frog | | symbol | gene, null |
| 155240645 | letm1.S | | | | | | African Clawed Frog | | symbol | gene, null |
| 626469407 | LETM1-DT | LETM1 divergent transcript | | | | | Human | | symbol , GTEx , COSMIC , name , Human Proteome Map | gene, ncrna |
| 1344708 | LETMD1 | LETM1 domain containing 1 | This gene encodes a mitochondrial outer membrane protein. It has a potential role in tumorigenesis, which may result from negative regulation of the p53 tumor suppressor gene. Alternatively spliced transcript variants have been noted for this gene. [provided by RefSeq, Aug 2011] | 12 | 51048220 | 51068958 | Human | 95 | old_gene_name , name | gene, protein-coding, REVIEWED [RefSeq] |
| 1552508 | Letmd1 | LETM1 domain containing 1 | Enables molecular adaptor activity. Involved in mitochondrion organization and positive regulation of cold-induced thermogenesis. Acts upstream of or within several processes, including non-canonical NF-kappaB signal transduction; nucleobase-containing compound biosynthetic process; and toll-like re ceptor 4 signaling pathway. Located in mitochondrial inner membrane. Is active in nucleus. Is expressed in several structures, including brain; cranial ganglion; dorsal root ganglion; and retina. Orthologous to human LETMD1 (LETM1 domain containing 1). [provided by Alliance of Genome Resources, Jul 2025] | 15 | 100360302 | 100377133 | Mouse | 119 | old_gene_name , name , description | gene, protein-coding, VALIDATED [RefSeq] |
| 1596738 | Letmd1 | LETM1 domain containing 1 | ENCODES a protein that exhibits molecular adaptor activity (ortholog); INVOLVED IN ATP biosynthetic process (ortholog); calcium ion homeostasis (ortholog); gene expression (ortholog); ASSOCIATED WITH breast cancer (ortholog); ovarian carcinoma (ortholog); renal carcinoma (ortholog); FOUND IN mitocho ndrial inner membrane (ortholog); mitochondrion (ortholog); nucleus (ortholog); INTERACTS WITH 2,3,7,8-tetrachlorodibenzodioxine; 6-propyl-2-thiouracil; amitrole | 7 | 133461920 | 133476592 | Rat | 98 | old_gene_name , name | gene, protein-coding, VALIDATED [RefSeq] |
| 8732434 | Letmd1 | LETM1 domain containing 1 | ENCODES a protein that exhibits molecular adaptor activity (ortholog); INVOLVED IN ATP biosynthetic process (ortholog); calcium ion homeostasis (ortholog); gene expression (ortholog); ASSOCIATED WITH breast cancer (ortholog); ovarian carcinoma (ortholog); renal carcinoma (ortholog); FOUND IN mitocho ndrial inner membrane (ortholog); mitochondrion (ortholog); nucleus (ortholog) | NW_004955547 | 1574210 | 1586432 | Chinchilla | 27 | old_gene_name , name | gene, protein-coding, MODEL [RefSeq] |
| 12042664 | LETMD1 | LETM1 domain containing 1 | ENCODES a protein that exhibits molecular adaptor activity (inferred); ribosome binding (inferred); INVOLVED IN ATP biosynthetic process (ortholog); calcium ion homeostasis (ortholog); gene expression (ortholog); ASSOCIATED WITH breast cancer (ortholog); ovarian carcinoma (ortholog); renal carcinoma (ortholog); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred); nucleus (inferred) | 12 | 37685741 | 37705104 | Bonobo | 31 | old_gene_name , name | gene, protein-coding, MODEL [RefSeq] |
| 12199580 | LETMD1 | LETM1 domain containing 1 | ENCODES a protein that exhibits molecular adaptor activity (inferred); ribosome binding (inferred); INVOLVED IN ATP biosynthetic process (ortholog); calcium ion homeostasis (ortholog); gene expression (ortholog); ASSOCIATED WITH breast cancer (ortholog); ovarian carcinoma (ortholog); renal carcinoma (ortholog); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred); nucleus (inferred) | 27 | 3761880 | 3770158 | Dog | 31 | old_gene_name , name | gene, protein-coding, MODEL [RefSeq] |
| 12493401 | Letmd1 | LETM1 domain containing 1 | ENCODES a protein that exhibits molecular adaptor activity (inferred); ribosome binding (inferred); INVOLVED IN ATP biosynthetic process (ortholog); calcium ion homeostasis (ortholog); gene expression (ortholog); ASSOCIATED WITH breast cancer (ortholog); ovarian carcinoma (ortholog); renal carcinoma (ortholog); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred); nucleus (inferred) | NW_004936512 | 8684597 | 8694074 | Squirrel | 31 | old_gene_name , name | gene, protein-coding, MODEL [RefSeq] |
| 13982802 | LETMD1 | LETM1 domain containing 1 | ENCODES a protein that exhibits molecular adaptor activity (inferred); ribosome binding (inferred); INVOLVED IN ATP biosynthetic process (ortholog); calcium ion homeostasis (ortholog); gene expression (ortholog); ASSOCIATED WITH breast cancer (ortholog); ovarian carcinoma (ortholog); renal carcinoma (ortholog); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred); nucleus (inferred) | | | | Pig | 31 | old_gene_name , name | gene, protein-coding, MODEL [RefSeq] |
| 18677024 | LETMD1 | LETM1 domain containing 1 | ENCODES a protein that exhibits molecular adaptor activity (inferred); ribosome binding (inferred); INVOLVED IN ATP biosynthetic process (ortholog); calcium ion homeostasis (ortholog); gene expression (ortholog); ASSOCIATED WITH breast cancer (ortholog); ovarian carcinoma (ortholog); renal carcinoma (ortholog); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred); nucleus (inferred) | | | | Green Monkey | 31 | old_gene_name , name | gene, protein-coding, MODEL [RefSeq] |
| 18929400 | Letmd1 | LETM1 domain containing 1 | ENCODES a protein that exhibits molecular adaptor activity (ortholog); INVOLVED IN ATP biosynthetic process (ortholog); calcium ion homeostasis (ortholog); gene expression (ortholog); ASSOCIATED WITH breast cancer (ortholog); ovarian carcinoma (ortholog); renal carcinoma (ortholog); FOUND IN nucleus (ortholog) | | | | Naked Mole-Rat | 29 | old_gene_name , name | gene, protein-coding, MODEL [RefSeq] |
| 625997760 | Letmd1 | LETM1 domain containing 1 | ENCODES a protein that exhibits molecular adaptor activity (ortholog); INVOLVED IN ATP biosynthetic process (ortholog); calcium ion homeostasis (ortholog); gene expression (ortholog); ASSOCIATED WITH breast cancer (ortholog); ovarian carcinoma (ortholog); renal carcinoma (ortholog); FOUND IN mitocho ndrial inner membrane (ortholog); mitochondrion (ortholog); nucleus (ortholog) | | | | Black Rat | 27 | old_gene_name , name | gene, protein-coding, MODEL [RefSeq] |
| 18912413 | LOC106009575 | LETM1 domain-containing protein 1 pseudogene | | | | | Naked Mole-Rat | | name | gene, pseudo, MODEL [RefSeq] |
| 18933654 | LOC101699965 | LETM1 domain-containing protein LETM2, mitochondrial | ENCODES a protein that exhibits ribosome binding (inferred); INVOLVED IN intracellular monoatomic cation homeostasis (inferred); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred) | | | | Naked Mole-Rat | 5 | name | gene, protein-coding, MODEL [RefSeq] |
| 18913079 | LOC110344069 | LETM1 domain-containing protein LETM2, mitochondrial-like | | | | | Naked Mole-Rat | | name | gene, pseudo, MODEL [RefSeq] |
| 18922283 | LOC101711757 | LETM1 and EF-hand domain-containing protein 1, mitochondrial pseudogene | | | | | Naked Mole-Rat | | name | gene, pseudo, MODEL [RefSeq] |
| 18926718 | LOC101712211 | LETM1 and EF-hand domain-containing protein 1, mitochondrial pseudogene | | | | | Naked Mole-Rat | | name | gene, pseudo, MODEL [RefSeq] |
| 16556299 | AC018442.1 | leucine zipper-EF-hand containing transmembrane protein 1 (LETM1) pseudogene | | | | | Human | | name | gene, processed_pseudogene |
| 1311220 | Letm2 | leucine zipper and EF-hand containing transmembrane protein 2 | ENCODES a protein that exhibits ribosome binding (inferred); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred); INTERACTS WITH 2-methoxyethanol; 3,3',4,4',5-pentachlorobiphenyl; bisphenol A | 16 | 73171768 | 73192336 | Rat | 54 | old_gene_name | gene, protein-coding, VALIDATED [RefSeq] |
| 1322565 | LETM2 | leucine zipper and EF-hand containing transmembrane protein 2 | Predicted to enable transmembrane transporter activity. Predicted to be involved in mitochondrial calcium ion transmembrane transport and mitochondrion organization. Located in mitochondrion. [provided by Alliance of Genome Resources, Jul 2025] | 8 | 38382431 | 38409527 | Human | 55 | old_gene_name | gene, protein-coding, VALIDATED [RefSeq] |
| 1616469 | Letm2 | leucine zipper-EF-hand containing transmembrane protein 2 | Predicted to enable transmembrane transporter activity. Predicted to be involved in mitochondrial calcium ion transmembrane transport and mitochondrion organization. Predicted to be located in mitochondrial inner membrane. Predicted to be active in mitochondrion. Orthologous to human LETM2 (leucine zipper and EF-hand containing transmembrane protein 2). [provided by Alliance of Genome Resources, Jul 2025] | 8 | 26068494 | 26088005 | Mouse | 55 | old_gene_name | gene, protein-coding, VALIDATED [RefSeq] |
| 8842726 | Letm2 | leucine zipper and EF-hand containing transmembrane protein 2 | FOUND IN mitochondrion (ortholog) | NW_004955463 | 13990353 | 14012911 | Chinchilla | 1 | old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 11927299 | LETM2 | leucine zipper and EF-hand containing transmembrane protein 2 | ENCODES a protein that exhibits ribosome binding (inferred); INVOLVED IN intracellular monoatomic cation homeostasis (inferred); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred) | 8 | 37687640 | 37711531 | Bonobo | 5 | old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 12236860 | LETM2 | leucine zipper and EF-hand containing transmembrane protein 2 | ENCODES a protein that exhibits ribosome binding (inferred); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred) | 16 | 27082167 | 27102172 | Dog | 8 | old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 12658000 | Letm2 | leucine zipper and EF-hand containing transmembrane protein 2 | ENCODES a protein that exhibits ribosome binding (inferred); INVOLVED IN intracellular monoatomic cation homeostasis (inferred); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred) | NW_004936710 | 1736010 | 1758480 | Squirrel | 5 | old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 14071024 | LETM2 | leucine zipper and EF-hand containing transmembrane protein 2 | ENCODES a protein that exhibits ribosome binding (inferred); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred) | | | | Pig | 8 | old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 18755673 | LETM2 | leucine zipper and EF-hand containing transmembrane protein 2 | ENCODES a protein that exhibits ribosome binding (inferred); INVOLVED IN intracellular monoatomic cation homeostasis (inferred); FOUND IN mitochondrial inner membrane (inferred); mitochondrion (inferred) | | | | Green Monkey | 5 | old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 625879802 | Letm2 | leucine zipper and EF-hand containing transmembrane protein 2 | FOUND IN mitochondrion (ortholog) | | | | Black Rat | 1 | old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 18537413 | LOC103235417 | mitochondrial proton/calcium exchanger protein-like | | | | | Green Monkey | | old_gene_name | gene, pseudo, MODEL [RefSeq] |
| 11717218 | LOC100976244 | mitochondrial proton/calcium exchanger protein-like | | 19 | 55056203 | 55060484 | Bonobo | | old_gene_name | gene, pseudo, MODEL [RefSeq] |
| 12499234 | LOC101971549 | mitochondrial proton/calcium exchanger protein-like | | NW_004936471 | 26880591 | 26882702 | Squirrel | | old_gene_name | gene, protein-coding, MODEL [RefSeq] |
| 18687520 | LOC103237676 | mitochondrial proton/calcium exchanger protein pseudogene | | | | | Green Monkey | | old_gene_name | gene, pseudo, MODEL [RefSeq] |
| 18406670 | LOC103245439 | mitochondrial proton/calcium exchanger protein pseudogene | | | | | Green Monkey | | old_gene_name | gene, pseudo, MODEL [RefSeq] |
| 11716375 | LOC103786642 | mitochondrial proton/calcium exchanger protein-like | | 8 | 96343327 | 96345585 | Bonobo | | old_gene_name | gene, pseudo, MODEL [RefSeq] |
| 2293112 | LETM1P1 | leucine zipper and EF-hand containing transmembrane protein 1 pseudogene 1 | | 15 | 66808567 | 66810669 | Human | | symbol , old_gene_name , COSMIC , Human Proteome Map | gene, pseudo, INFERRED [RefSeq] |
| 2293160 | LETM1P2 | leucine zipper and EF-hand containing transmembrane protein 1 pseudogene 2 | | 19 | 58044440 | 58048251 | Human | | symbol , COSMIC , Human Proteome Map | gene, pseudo, INFERRED [RefSeq] |
| 2306324 | LETM1P3 | leucine zipper and EF-hand containing transmembrane protein 1 pseudogene 3 | | 8 | 99695932 | 99698520 | Human | | symbol , GTEx , COSMIC , Human Proteome Map | gene, pseudo, INFERRED [RefSeq] |