Nucleoside diphosphate kinase B

Definition:

Major role in the synthesis of nucleoside triphosphates other than ATP. The ATP gamma phosphate is transferred to the NDP beta phosphate via a ping-pong mechanism, using a phosphorylated active-site intermediate (By similarity). Negatively regulates Rho activity by interacting with AKAP13/LBC. Acts as a transcriptional activator of the MYC gene; binds DNA non-specifically. Binds to both single-stranded guanine- and cytosine-rich strands within the nuclease hypersensitive element (NHE) III(1) region of the MYC gene promoter. Does not bind to duplex NHE III(1). Has G-quadruplex (G4) DNA-binding activity, which is independent of its nucleotide-binding and kinase activity. Binds both folded and unfolded G4 with similar low nanomolar affinities. Stabilizes folded G4s regardless of whether they are prefolded or not. Exhibits histidine protein kinase activity.

References:

[1]. Shinki Iwashita, et al. Lbc proto-oncogene product binds to and could be negatively regulated by metastasis suppressor nm23-H2. Biochem Biophys Res Commun. 2004 Aug 6;320(4):1063-8. [Content Brief]

[2]. E H Postel, et al. Human c-myc transcription factor PuF identified as nm23-H2 nucleoside diphosphate kinase, a candidate suppressor of tumor metastasis. Science. 1993 Jul 23;261(5120):478-80. [Content Brief]

[3]. Thomas Wieland, et al. Reversible histidine phosphorylation in mammalian cells: a teeter-totter formed by nucleoside diphosphate kinase and protein histidine phosphatase 1. Methods Enzymol. 2010;471:379-402. [Content Brief]

[4]. Mykhailo Kopylov, et al. The maize (Zea mays L.) nucleoside diphosphate kinase1 (ZmNDPK1) gene encodes a human NM23-H2 homologue that binds and stabilizes G-quadruplex DNA. Biochemistry. 2015 Mar 10;54(9):1743-57. [Content Brief]

[5]. Thomas S Dexheimer, et al. NM23-H2 may play an indirect role in transcriptional activation of c-myc gene expression but does not cleave the nuclease hypersensitive element III(1). Mol Cancer Ther. 2009 May;8(5):1363-77. [Content Brief]

Biomedical Dictionary

The Biomedical Dictionary is a comprehensive and professional collection of biological academic terms and subject datas. All explanations are supported by authoritative books or high impact factor literatures, and you can acquire accurate explanations of the biomedical terms you want to know.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Name
Email *

	Sorry, but the email address you supplied was invalid.