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NME8 NME/NM23 family member 8 [ Homo sapiens (human) ]

Gene ID: 51314, updated on 19-May-2026
Official Symbol
NME8provided by HGNC
Official Full Name
NME/NM23 family member 8provided by HGNC
Primary source
HGNC:HGNC:16473
See related
Ensembl:ENSG00000086288 MIM:607421; AllianceGenome:HGNC:16473
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Homo sapiens
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as
NDK8; CILD6; DNAI8; SPTRX2; TXNDC3; NM23-H8; sptrx-2; HEL-S-99
Summary
This gene encodes a protein with an N-terminal thioredoxin domain and three C-terminal nucleoside diphosphate kinase (NDK) domains, but the NDK domains are thought to be catalytically inactive. The sea urchin ortholog of this gene encodes a component of sperm outer dynein arms, and the protein is implicated in ciliary function. Mutations in this gene are implicated in primary ciliary dyskinesia type 6.[provided by RefSeq, Nov 2009]
Expression
Biased expression in testis (RPKM 4.9), bone marrow (RPKM 3.6) and 3 other tissues See more
Orthologs
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Try the new Transcripts and proteins table
See NME8 in Genome Data Viewer
Location:
7p14.1
Exon count:
18
Annotation release Status Assembly Chr Location
RS_2025_08 current GRCh38.p14 (GCF_000001405.40) 7 NC_000007.14 (37848597..37900397)
RS_2025_08 current T2T-CHM13v2.0 (GCF_009914755.1) 7 NC_060931.1 (37989652..38041414)
RS_2024_09 previous assembly GRCh37.p13 (GCF_000001405.25) 7 NC_000007.13 (37888199..37939999)

Chromosome 7 - NC_000007.14Genomic Context describing neighboring genes Neighboring gene H3K27ac hESC enhancer GRCh37_chr7:37843212-37843712 Neighboring gene G protein-coupled receptor 141B, pseudogene Neighboring gene CDCA3 pseudogene 1 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 25863 Neighboring gene Neanderthal introgressed variant-containing enhancer experimental_98467 Neighboring gene ATAC-STARR-seq lymphoblastoid silent region 18107 Neighboring gene secreted frizzled related protein 4 Neighboring gene ependymin related 1 Neighboring gene Sharpr-MPRA regulatory region 10360 Neighboring gene H3K27ac-H3K4me1 hESC enhancer GRCh37_chr7:37987061-37987582 Neighboring gene H3K27ac-H3K4me1 hESC enhancer GRCh37_chr7:37987583-37988102

  • 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

GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Associated conditions

Description Tests
Primary ciliary dyskinesia 6
MedGen: C1970506 OMIM: 610852 GeneReviews: Primary Ciliary Dyskinesia
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EBI GWAS Catalog

Description
Genome-wide meta-analysis identifies 56 bone mineral density loci and reveals 14 loci associated with risk of fracture.
EBI GWAS Catalog
Meta-analysis of 74,046 individuals identifies 11 new susceptibility loci for Alzheimer's disease.
EBI GWAS Catalog
Products Interactant Other Gene Complex Source Pubs Description

Markers

Potential readthrough

Included gene: EPDR1

Gene Ontology Provided by GOA

Function Evidence Code Pubs
enables 3'-5'-DNA exonuclease activity IDA
Inferred from Direct Assay
more info
PubMed 
enables microtubule binding IBA
Inferred from Biological aspect of Ancestor
more info
 
enables microtubule binding IDA
Inferred from Direct Assay
more info
PubMed 
Process Evidence Code Pubs
involved_in DNA catabolic process IDA
Inferred from Direct Assay
more info
PubMed 
involved_in cilium assembly IBA
Inferred from Biological aspect of Ancestor
more info
 
acts_upstream_of_or_within cilium assembly IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in flagellated sperm motility IBA
Inferred from Biological aspect of Ancestor
more info
 
Component Evidence Code Pubs
is_active_in axoneme IBA
Inferred from Biological aspect of Ancestor
more info
 
located_in axoneme IEA
Inferred from Electronic Annotation
more info
 
located_in axoneme ISS
Inferred from Sequence or Structural Similarity
more info
 
located_in cytoplasm IDA
Inferred from Direct Assay
more info
PubMed 
located_in cytoplasm IEA
Inferred from Electronic Annotation
more info
 
located_in cytoplasm ISS
Inferred from Sequence or Structural Similarity
more info
 
located_in cytosol IDA
Inferred from Direct Assay
more info
 
located_in nucleus IDA
Inferred from Direct Assay
more info
PubMed 
part_of outer dynein arm IMP
Inferred from Mutant Phenotype
more info
PubMed 
located_in sperm cytoplasmic droplet IEA
Inferred from Electronic Annotation
more info
 
located_in sperm flagellum IEA
Inferred from Electronic Annotation
more info
 
located_in sperm midpiece IDA
Inferred from Direct Assay
more info
PubMed 
is_active_in sperm principal piece IBA
Inferred from Biological aspect of Ancestor
more info
 
located_in sperm principal piece IDA
Inferred from Direct Assay
more info
PubMed 
located_in sperm principal piece IEA
Inferred from Electronic Annotation
more info
 
Preferred Names
protein NME8
Names
3'-5' exonuclease NME8
epididymis secretory protein Li 99
nucleoside diphosphate kinase 8
protein kinase NME8
putative 3'-5'-DNA exonuclease NDK8
sperm-specific thioredoxin 2
spermatid-specific thioredoxin-2
thioredoxin domain containing 3 (spermatozoa)
thioredoxin domain-containing protein 3

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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.

Genomic

  1. NG_015893.1 RefSeqGene

    Range
    5001..56801
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. NM_016616.5NP_057700.3  protein NME8

    See identical proteins and their annotated locations for NP_057700.3

    Status: REVIEWED

    Source sequence(s)
    AF202051, BC036816
    Consensus CDS
    CCDS5452.1
    UniProtKB/Swiss-Prot
    Q8N427, Q9NZH1
    UniProtKB/TrEMBL
    A0A0K0K1K2
    Related
    ENSP00000199447.4, ENST00000199447.9
    Conserved Domains (3) summary
    smart00562
    Location:451586
    NDK; Enzymes that catalyze nonsubstrate specific conversions of nucleoside diphosphates to nucleoside triphosphates
    cd02948
    Location:11113
    TRX_NDPK; TRX domain, TRX and NDP-kinase (NDPK) fusion protein family; most members of this group are fusion proteins which contain one redox active TRX domain containing a CXXC motif and three NDPK domains, and are characterized as intermediate chains (ICs) of ...
    cd04416
    Location:451582
    NDPk_TX; NDP kinase domain of thioredoxin domain-containing proteins (TXNDC3 and TXNDC6): Txl-2 (TXNDC6) and Sptrx-2 (TXNDC3) are fusion proteins of Group II N-terminal thioredoxin domains followed by one or three NDP kinase domains, respectively. Sptrx-2, which ...

RefSeqs of Annotated Genomes: GCF_000001405.40-RS_2025_08

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p14 Primary Assembly

Genomic

  1. NC_000007.14 Reference GRCh38.p14 Primary Assembly

    Range
    37848597..37900397
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

Alternate T2T-CHM13v2.0

Genomic

  1. NC_060931.1 Alternate T2T-CHM13v2.0

    Range
    37989652..38041414
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)