3qb5

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Template:STRUCTURE 3qb5

Contents

Human C3PO complex in the presence of MnSO4

Template:ABSTRACT PUBMED 21552258

Function

[TSN_HUMAN] DNA-binding protein that specifically recognizes consensus sequences at the breakpoint junctions in chromosomal translocations, mostly involving immunoglobulin (Ig)/T-cell receptor gene segments. Seems to recognize single-stranded DNA ends generated by staggered breaks occurring at recombination hot spots.[1] [2] Exhibits both single-stranded and double-stranded endoribonuclease activity. May act as an activator of RNA-induced silencing complex (RISC) by facilitating endonucleolytic cleavage of the siRNA passenger strand.[3] [4] [TSNAX_HUMAN] Acts in combination with TSN as an endonuclease involved in the activation of the RNA-induced silencing complex (RISC). Possible role in spermatogenesis.[5] [6]

About this Structure

3qb5 is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

  • Ye X, Huang N, Liu Y, Paroo Z, Huerta C, Li P, Chen S, Liu Q, Zhang H. Structure of C3PO and mechanism of human RISC activation. Nat Struct Mol Biol. 2011 May 8. PMID:21552258 doi:10.1038/nsmb.2032
  1. Kasai M, Matsuzaki T, Katayanagi K, Omori A, Maziarz RT, Strominger JL, Aoki K, Suzuki K. The translin ring specifically recognizes DNA ends at recombination hot spots in the human genome. J Biol Chem. 1997 Apr 25;272(17):11402-7. PMID:9111049
  2. Ye X, Huang N, Liu Y, Paroo Z, Huerta C, Li P, Chen S, Liu Q, Zhang H. Structure of C3PO and mechanism of human RISC activation. Nat Struct Mol Biol. 2011 May 8. PMID:21552258 doi:10.1038/nsmb.2032
  3. Kasai M, Matsuzaki T, Katayanagi K, Omori A, Maziarz RT, Strominger JL, Aoki K, Suzuki K. The translin ring specifically recognizes DNA ends at recombination hot spots in the human genome. J Biol Chem. 1997 Apr 25;272(17):11402-7. PMID:9111049
  4. Ye X, Huang N, Liu Y, Paroo Z, Huerta C, Li P, Chen S, Liu Q, Zhang H. Structure of C3PO and mechanism of human RISC activation. Nat Struct Mol Biol. 2011 May 8. PMID:21552258 doi:10.1038/nsmb.2032
  5. Bray JD, Chennathukuzhi VM, Hecht NB. Identification and characterization of cDNAs encoding four novel proteins that interact with translin associated factor-X. Genomics. 2002 Jun;79(6):799-808. PMID:12036294 doi:10.1006/geno.2002.6779
  6. Ye X, Huang N, Liu Y, Paroo Z, Huerta C, Li P, Chen S, Liu Q, Zhang H. Structure of C3PO and mechanism of human RISC activation. Nat Struct Mol Biol. 2011 May 8. PMID:21552258 doi:10.1038/nsmb.2032

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