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The human genome codes for 95 non-redundant helicases: 64 RNA helicases and 31 DNA helicases. [2] Many cellular processes, such as DNA replication, transcription, translation, recombination, DNA repair, and ribosome biogenesis involve the separation of nucleic acid strands that necessitates the use of helicases. Some specialized helicases are ...
The minichromosome maintenance protein complex (MCM) is a DNA helicase essential for genomic DNA replication. Eukaryotic MCM consists of six gene products, Mcm2–7, which form a heterohexamer. [1] [2] As a critical protein for cell division, MCM is also the target of various checkpoint pathways, such as the S-phase entry and S-phase arrest ...
Within eukaryotes, DNA replication is controlled within the context of the cell cycle. As the cell grows and divides, it progresses through stages in the cell cycle; DNA replication takes place during the S phase (synthesis phase). The progress of the eukaryotic cell through the cycle is controlled by cell cycle checkpoints.
51428 72935 Ensembl ENSG00000183258 ENSMUSG00000021494 UniProt Q9UJV9 Q91VN6 RefSeq (mRNA) NM_016222 NM_001321732 NM_001321830 NM_134059 RefSeq (protein) NP_001308661 NP_001308759 NP_057306 NP_598820 Location (UCSC) Chr 5: 177.51 – 177.52 Mb Chr 13: 55.68 – 55.68 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Probable ATP-dependent RNA helicase DDX41 is an enzyme that in humans ...
DEAD box proteins were first brought to attention in the late 1980s in a study that looked at a group of NTP binding sites that were similar in sequence to the eIF4A RNA helicase sequence. [4] The results of this study showed that these proteins (p68, SrmB, MSS116, vasa, PL10, mammalian eIF4A, yeast eIF4A) involved in RNA metabolism had several ...
For DNA polymerases to function, the double-stranded DNA helix has to be unwound to expose two single-stranded DNA templates for replication. DNA helicases are responsible for unwinding the double-stranded DNA during chromosome replication. Helicases in eukaryotic cells are remarkably complex. [106]
The MCM complex consisting of MCM6 (this protein) and MCM2, 4 and 7 possesses DNA helicase activity, and may act as a DNA unwinding enzyme.The hexameric protein complex formed by the MCM proteins is a key component of the pre-replication complex (pre-RC) and may be involved in the formation of replication forks and in the recruitment of other DNA replication related proteins.
104721 Ensembl ENSG00000079785 ENSMUSG00000037149 UniProt Q92499 Q91VR5 RefSeq (mRNA) NM_004939 NM_134040 RefSeq (protein) NP_004930 NP_598801 Location (UCSC) Chr 2: 15.59 – 15.63 Mb Chr 12: 13.27 – 13.3 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse ATP-dependent RNA helicase DDX1 is an enzyme that in humans is encoded by the DDX1 gene. Function DEAD box proteins, characterized ...