TMEM256 transmembrane protein 256 [Homo sapiens (human)] - Gene

Summary

Official Symbol: TMEM256provided by HGNC
Official Full Name: transmembrane protein 256provided by HGNC
Primary source: HGNC:HGNC:28618
See related: Ensembl:ENSG00000205544 MIM:617779; AllianceGenome:HGNC:28618
Gene type: protein coding
RefSeq status: VALIDATED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as: C17orf61
Summary: Located in extracellular exosome and mitochondrion. [provided by Alliance of Genome Resources, Jun 2025]
Expression: Ubiquitous expression in fat (RPKM 45.8), duodenum (RPKM 45.5) and 25 other tissues See more
Orthologs: mouse all
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Genomic context

Location:: 17p13.1

Exon count:: 4

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCh38.p14 (GCF_000001405.40)	17	NC_000017.11 (7402975..7404097, complement)
RS_2024_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	17	NC_060941.1 (7307020..7308140, complement)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	17	NC_000017.10 (7306294..7307416, complement)

Chromosome 17 - NC_000017.11 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Expression

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See details

Project title: Tissue-specific circular RNA induction during human fetal development
Description: 35 human fetal samples from 6 tissues (3 - 7 replicates per tissue) collected between 10 and 20 weeks gestational time were sequenced using Illumina TruSeq Stranded Total RNA
BioProject: PRJNA270632
Publication: PMID 26076956
Analysis date: Mon Apr 2 22:54:59 2018

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Western blot experiments designed to detect flotillin 2, TMEM256, Rab3B and LAMTOR1 showed that the level of these proteins was higher in urinary exosomes from prostate cancer patients compared to healthy males
Title: Exosomal proteins as prostate cancer biomarkers in urine: From mass spectrometry discovery to immunoassay-based validation.

Submit: New GeneRIF Correction

Phenotypes

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Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

Variation

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See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

RH46979 (e-PCR)
- UniSTS:38408

RH40266 (e-PCR)
- UniSTS:86653

WI-18431 (e-PCR)
- UniSTS:21654

Readthrough TMEM256-PLSCR3

Readthrough gene: TMEM256-PLSCR3, Included gene: PLSCR3

Gene Ontology Provided by GOA

Component	Evidence Code	Pubs
located_in extracellular exosome	HDA more info	PubMed
is_active_in membrane	IBA Inferred from Biological aspect of Ancestor more info
located_in membrane	IEA Inferred from Electronic Annotation more info
located_in mitochondrion	HTP more info	PubMed

General protein information

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Preferred Names: transmembrane protein 256

Names: UPF0451 protein C17orf61

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.