3q90

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Template:STRUCTURE 3q90

Contents 1 Crystal structure of the NTF2 domain of Ras GTPase-activating protein-binding protein 1 2 Function 3 About this Structure 4 Reference

Crystal structure of the NTF2 domain of Ras GTPase-activating protein-binding protein 1

Function

[G3BP1_HUMAN] May be a regulated effector of stress granule assembly. Phosphorylation-dependent sequence-specific endoribonuclease in vitro. Cleaves exclusively between cytosine and adenine and cleaves MYC mRNA preferentially at the 3'-UTR. ATP- and magnesium-dependent helicase. Unwinds preferentially partial DNA and RNA duplexes having a 17 bp annealed portion and either a hanging 3' tail or hanging tails at both 5'- and 3'-ends. Unwinds DNA/DNA, RNA/DNA, and RNA/RNA substrates with comparable efficiency. Acts unidirectionally by moving in the 5' to 3' direction along the bound single-stranded DNA.^{[1] [2]}

About this Structure

3q90 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

1. ↑ Costa M, Ochem A, Staub A, Falaschi A. Human DNA helicase VIII: a DNA and RNA helicase corresponding to the G3BP protein, an element of the ras transduction pathway. Nucleic Acids Res. 1999 Feb 1;27(3):817-21. PMID:9889278
2. ↑ Tourriere H, Gallouzi IE, Chebli K, Capony JP, Mouaikel J, van der Geer P, Tazi J. RasGAP-associated endoribonuclease G3Bp: selective RNA degradation and phosphorylation-dependent localization. Mol Cell Biol. 2001 Nov;21(22):7747-60. PMID:11604510 doi:10.1128/MCB.21.22.7747-7760.2001