Single cell type - LETM2 - The Human Protein Atlas

GENERAL INFORMATIONⁱ General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.
Gene nameⁱ Official gene symbol, which is typically a short form of the gene name, according to HGNC.	LETM2
Gene descriptionⁱ Full gene name according to HGNC.	Leucine zipper and EF-hand containing transmembrane protein 2
Protein classⁱ Assigned HPA protein class(es) for the encoded protein(s).	Transporters
Predicted locationⁱ All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions. Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached. Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s). The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.	Membrane, Intracellular
Number of transcriptsⁱ Number of protein-coding transcripts from the gene as defined by Ensembl.	9

HUMAN PROTEIN ATLAS INFORMATIONⁱ Summary of RNA expression and protein localization based on data generated within the Human Protein Atlas project.
Single cell type expression clusterⁱ The RNA data was used to cluster genes according to their expression across single cell types. Clusters contain genes that have similar expression patterns, and each cluster has been manually annotated to describe common features in terms of function and specificity.	Spermatocytes & Spermatids - Spermatid development (mainly)
Single cell type specificityⁱ The RNA specificity category is based on mRNA expression levels in the analyzed cell types based on scRNA-seq data from normal tissues. The categories include: cell type enriched, group enriched, cell type enhanced, low cell type specificity and not detected.	Cell type enhanced (Early spermatids, Late spermatids, Spermatocytes)
Tau specificity scoreⁱ Tau specificity score is a numerical indicator of the specificity of the gene expression across cells or tissues. The value ranges from 0 and 1, where 0 indicates identical expression across all cells/tissue types, while 1 indicates expression in a single cell/tissue type.	0.68
Brain cluster specificityⁱ The RNA specificity category is based on mRNA expression levels in the analyzed cell cluster types based on snRNA-seq data from brain samples. The categories include: cell type enriched, group enriched, cell type enhanced, low cell type specificity and not detected. "cell type" refer to one of the 34 cluster names used to summarize the 2.5 million cells included in the brain cell representation.	Low cell type specificity
Immune cell specificityⁱ The RNA specificity category is based on mRNA expression levels in the analyzed samples based on data from HPA. The categories include: cell type enriched, group enriched, cell type enhanced, low cell type specificity and not detected.	Immune cell enriched (neutrophil)
Protein evidenceⁱ Evidence score for genes based on UniProt protein existence (UniProt evidence); neXtProt protein existence (neXtProt evidence);and a Human Protein Atlas antibody- or RNA based score (HPA evidence). The avaliable scores are evidence at protein level, evidence at transcript level, no evidence, or not avaliable.	Evidence at protein level

ASSAYSⁱ

Single cell type

Cell type enrichment

Single nuclei - Brain

Immune cells

Expression clustering

SINGLE CELL TYPESⁱ A summary of normalized single cell RNA (nTPM) from all single cell types. Color-coding is based on cell type groups, each consisting of cell types with functional features in common.
Single cell types RNA single cell type specificity: Cell type enhanced (Early spermatids, Late spermatids, Spermatocytes)

TISSUE CELL TYPEⁱ The tissue cell type section provides a cell type specificity prediction for all protein coding genes. More information on the data available can be found here and a description of the analysis here.
	Core cell typesⁱ The core cell type table displays data for a panel of eight cell types that are found in many tissues. Colored dots indicate that the selected gene has core cell type specificity in the indicated tissue. Grey dots indicate that cell type is present within that tissue, but the selected gene is not predicted to be enriched there. Category Alphabetical Enrichment Tissue specific cell typesⁱ This plot shows the enrichment score of the selected gene in all non-core cell types found within the profiled tissues, allowing comparisons between different cell types within different tissues. An enlarged symbol indicates classification of the gene as cell type enriched in the corresponding cell type.

SINGLE NUCLEI BRAINⁱ

Single nuclei cluster types

RNA brain cluster specificity: Low cell type specificity

IMMUNE CELL TYPE EXPRESSION (RNA)ⁱ Blood cell type expression overview shows RNA-seq data from three different sources: Internally generated Human Protein Atlas (HPA) data, as well as data generated by (Monaco et al) and (Schmiedel et al). Color-coding is based on blood cell type lineages, including B-cells, T-cells, NK-cells, monocytes, granulocytes and dendritic cells as well as total PBMC. To access sample data, click on tissue name or bar.
HPA datasetⁱ The resulting transcript expression values calculated as nTPM, resulting from the internal normalization pipeline for 18 immune cell types and total peripheral blood mononuclear cells (PBMC). Lineage Expression Alphabetical Immune cell type specificity: Immune cell enriched (neutrophil)
Monaco datasetⁱ The transcript expression values (nTPM) resulting from the internal normalization pipeline are visualized for 29 blood cell types and total peripheral blood mononuclear cells (PBMC) from Monaco et al. Lineage Expression Alphabetical
Schmiedel datasetⁱ Transcript Per Million (TPM) values are visualized for 15 blood cell types from the Schmiedel et al. dataset. Lineage Expression Alphabetical

EXPRESSION CLUSTERING & CORRELATIONⁱ

SINGLE CELL TYPE

LETM2 is part of cluster 70 Spermatocytes & Spermatids - Spermatid development with confidenceⁱ 1
376 genes in cluster

Go to interactive expression cluster page

15 nearest neighbours based on single cell RNA expression

Neighbourⁱ Gene name according to HGNC.	Descriptionⁱ Gene description according to HGNC.	Correlationⁱ Correlation between the selected gene and neighboring gene. Correlation is calculated as Spearman correlation in PCA space based on the RNA-seq expression data.	Clusterⁱ ID of the expression cluster of the neighboring gene.
DBF4	DBF4 zinc finger	0.5508	70
JPT1	Jupiter microtubule associated homolog 1	0.5350	45
DKK4	Dickkopf WNT signaling pathway inhibitor 4	0.5214	45
FAM186B	Family with sequence similarity 186 member B	0.5166	70
DYNLT2	Dynein light chain Tctex-type 2	0.5146	70
FIBCD1	Fibrinogen C domain containing 1	0.5098	45
PPP1R2B	PPP1R2 family member B	0.5098	70
C19orf67	Chromosome 19 open reading frame 67	0.5056	70
CCDC83	Coiled-coil domain containing 83	0.4954	70
INO80C	INO80 complex subunit C	0.4930	70
LAMC2	Laminin subunit gamma 2	0.4928	45
LRIT1	Leucine rich repeat, Ig-like and transmembrane domains 1	0.4925	70
C11orf91	Chromosome 11 open reading frame 91	0.4890	70
HIGD2B	HIG1 hypoxia inducible domain family member 2B	0.4885	70
PABPC3	Poly(A) binding protein cytoplasmic 3	0.4883	70

IMMUNE CELLS

LETM2 is part of cluster 21 Neutrophils - Unknown function with confidenceⁱ 1
492 genes in cluster

Go to interactive expression cluster page

15 nearest neighbours based on single cell RNA expression

Neighbourⁱ Gene name according to HGNC.	Descriptionⁱ Gene description according to HGNC.	Correlationⁱ Correlation between the selected gene and neighboring gene. Correlation is calculated as Spearman correlation in PCA space based on the RNA-seq expression data.	Clusterⁱ ID of the expression cluster of the neighboring gene.
STON1	Stonin 1	0.9762	35
RGS6	Regulator of G protein signaling 6	0.9762	35
BCAS3	BCAS3 microtubule associated cell migration factor	0.9524	4
MUSTN1	Musculoskeletal, embryonic nuclear protein 1	0.9524	35
TXNIP	Thioredoxin interacting protein	0.9524	21
ASB7	Ankyrin repeat and SOCS box containing 7	0.9524	4
RASSF3	Ras association domain family member 3	0.9524	4
HDAC7	Histone deacetylase 7	0.9524	21
REM2	RRAD and GEM like GTPase 2	0.9524	21
HYAL1	Hyaluronidase 1	0.9524	21
TBL1X	Transducin beta like 1 X-linked	0.9524	21
RFFL	Ring finger and FYVE like domain containing E3 ubiquitin protein ligase	0.9524	21
NRDC	Nardilysin convertase	0.9524	21
HERC3	HECT and RLD domain containing E3 ubiquitin protein ligase 3	0.9286	21
ID1	Inhibitor of DNA binding 1	0.9286	21