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==Function==
==Function==
[[http://www.uniprot.org/uniprot/RD23A_HUMAN RD23A_HUMAN]] Multiubiquitin chain receptor involved in modulation of proteasomal degradation. Binds to 'Lys-48'-linked polyubiquitin chains in a length-dependent manner and with a lower affinity to 'Lys-63'-linked polyubiquitin chains. Proposed to be capable to bind simultaneously to the 26S proteasome and to polyubiquitinated substrates and to deliver ubiquitinated proteins to the proteasome.<ref>PMID:9372924</ref><ref>PMID:14621999</ref><ref>PMID:12643283</ref><ref>PMID:15321727</ref><ref>PMID:20614012</ref> Involved in nucleotide excision repair and is thought to be functional equivalent for RAD23B in global genome nucleotide excision repair (GG-NER) by association with XPC. In vitro, the XPC:RAD23A dimer has NER activity. Can stabilize XPC.<ref>PMID:9372924</ref><ref>PMID:14621999</ref><ref>PMID:12643283</ref><ref>PMID:15321727</ref><ref>PMID:20614012</ref> Involved in vpr-dependent replication of HIV-1 in non-proliferating cells and primary macrophages. Required for the association of HIV-1 vpr with the host proteasome.<ref>PMID:9372924</ref><ref>PMID:14621999</ref><ref>PMID:12643283</ref><ref>PMID:15321727</ref><ref>PMID:20614012</ref>  
[[http://www.uniprot.org/uniprot/RD23A_HUMAN RD23A_HUMAN]] Multiubiquitin chain receptor involved in modulation of proteasomal degradation. Binds to 'Lys-48'-linked polyubiquitin chains in a length-dependent manner and with a lower affinity to 'Lys-63'-linked polyubiquitin chains. Proposed to be capable to bind simultaneously to the 26S proteasome and to polyubiquitinated substrates and to deliver ubiquitinated proteins to the proteasome.<ref>PMID:9372924</ref> <ref>PMID:14621999</ref> <ref>PMID:12643283</ref> <ref>PMID:15321727</ref> <ref>PMID:20614012</ref>   Involved in nucleotide excision repair and is thought to be functional equivalent for RAD23B in global genome nucleotide excision repair (GG-NER) by association with XPC. In vitro, the XPC:RAD23A dimer has NER activity. Can stabilize XPC.<ref>PMID:9372924</ref> <ref>PMID:14621999</ref> <ref>PMID:12643283</ref> <ref>PMID:15321727</ref> <ref>PMID:20614012</ref>   Involved in vpr-dependent replication of HIV-1 in non-proliferating cells and primary macrophages. Required for the association of HIV-1 vpr with the host proteasome.<ref>PMID:9372924</ref> <ref>PMID:14621999</ref> <ref>PMID:12643283</ref> <ref>PMID:15321727</ref> <ref>PMID:20614012</ref>


==About this Structure==
==About this Structure==

Revision as of 04:30, 4 April 2013

Template:STRUCTURE 1dv0

Refined NMR solution structure of the C-terminal UBA domain of the human homologue of RAD23A (HHR23A)Refined NMR solution structure of the C-terminal UBA domain of the human homologue of RAD23A (HHR23A)

Template:ABSTRACT PUBMED 11087358

FunctionFunction

[RD23A_HUMAN] Multiubiquitin chain receptor involved in modulation of proteasomal degradation. Binds to 'Lys-48'-linked polyubiquitin chains in a length-dependent manner and with a lower affinity to 'Lys-63'-linked polyubiquitin chains. Proposed to be capable to bind simultaneously to the 26S proteasome and to polyubiquitinated substrates and to deliver ubiquitinated proteins to the proteasome.[1] [2] [3] [4] [5] Involved in nucleotide excision repair and is thought to be functional equivalent for RAD23B in global genome nucleotide excision repair (GG-NER) by association with XPC. In vitro, the XPC:RAD23A dimer has NER activity. Can stabilize XPC.[6] [7] [8] [9] [10] Involved in vpr-dependent replication of HIV-1 in non-proliferating cells and primary macrophages. Required for the association of HIV-1 vpr with the host proteasome.[11] [12] [13] [14] [15]

About this StructureAbout this Structure

1dv0 is a 1 chain structure with sequence from Homo sapiens. This structure supersedes the now removed PDB entry 1uba. Full experimental information is available from OCA.

ReferenceReference

[xtra 1]

  1. ↑ Withers-Ward ES, Mueller TD, Chen IS, Feigon J. Biochemical and structural analysis of the interaction between the UBA(2) domain of the DNA repair protein HHR23A and HIV-1 Vpr. Biochemistry. 2000 Nov 21;39(46):14103-12. PMID:11087358
  1. ↑ Sugasawa K, Ng JM, Masutani C, Maekawa T, Uchida A, van der Spek PJ, Eker AP, Rademakers S, Visser C, Aboussekhra A, Wood RD, Hanaoka F, Bootsma D, Hoeijmakers JH. Two human homologs of Rad23 are functionally interchangeable in complex formation and stimulation of XPC repair activity. Mol Cell Biol. 1997 Dec;17(12):6924-31. PMID:9372924
  2. ↑ Wang Q, Goh AM, Howley PM, Walters KJ. Ubiquitin recognition by the DNA repair protein hHR23a. Biochemistry. 2003 Nov 25;42(46):13529-35. PMID:14621999 doi:10.1021/bi035391j
  3. ↑ Raasi S, Pickart CM. Rad23 ubiquitin-associated domains (UBA) inhibit 26 S proteasome-catalyzed proteolysis by sequestering lysine 48-linked polyubiquitin chains. J Biol Chem. 2003 Mar 14;278(11):8951-9. PMID:12643283
  4. ↑ Raasi S, Orlov I, Fleming KG, Pickart CM. Binding of polyubiquitin chains to ubiquitin-associated (UBA) domains of HHR23A. J Mol Biol. 2004 Aug 27;341(5):1367-79. PMID:15321727 doi:10.1016/j.jmb.2004.06.057
  5. ↑ Li G, Elder RT, Dubrovsky L, Liang D, Pushkarsky T, Chiu K, Fan T, Sire J, Bukrinsky M, Zhao RY. HIV-1 replication through hHR23A-mediated interaction of Vpr with 26S proteasome. PLoS One. 2010 Jun 29;5(6):e11371. doi: 10.1371/journal.pone.0011371. PMID:20614012 doi:10.1371/journal.pone.0011371
  6. ↑ Sugasawa K, Ng JM, Masutani C, Maekawa T, Uchida A, van der Spek PJ, Eker AP, Rademakers S, Visser C, Aboussekhra A, Wood RD, Hanaoka F, Bootsma D, Hoeijmakers JH. Two human homologs of Rad23 are functionally interchangeable in complex formation and stimulation of XPC repair activity. Mol Cell Biol. 1997 Dec;17(12):6924-31. PMID:9372924
  7. ↑ Wang Q, Goh AM, Howley PM, Walters KJ. Ubiquitin recognition by the DNA repair protein hHR23a. Biochemistry. 2003 Nov 25;42(46):13529-35. PMID:14621999 doi:10.1021/bi035391j
  8. ↑ Raasi S, Pickart CM. Rad23 ubiquitin-associated domains (UBA) inhibit 26 S proteasome-catalyzed proteolysis by sequestering lysine 48-linked polyubiquitin chains. J Biol Chem. 2003 Mar 14;278(11):8951-9. PMID:12643283
  9. ↑ Raasi S, Orlov I, Fleming KG, Pickart CM. Binding of polyubiquitin chains to ubiquitin-associated (UBA) domains of HHR23A. J Mol Biol. 2004 Aug 27;341(5):1367-79. PMID:15321727 doi:10.1016/j.jmb.2004.06.057
  10. ↑ Li G, Elder RT, Dubrovsky L, Liang D, Pushkarsky T, Chiu K, Fan T, Sire J, Bukrinsky M, Zhao RY. HIV-1 replication through hHR23A-mediated interaction of Vpr with 26S proteasome. PLoS One. 2010 Jun 29;5(6):e11371. doi: 10.1371/journal.pone.0011371. PMID:20614012 doi:10.1371/journal.pone.0011371
  11. ↑ Sugasawa K, Ng JM, Masutani C, Maekawa T, Uchida A, van der Spek PJ, Eker AP, Rademakers S, Visser C, Aboussekhra A, Wood RD, Hanaoka F, Bootsma D, Hoeijmakers JH. Two human homologs of Rad23 are functionally interchangeable in complex formation and stimulation of XPC repair activity. Mol Cell Biol. 1997 Dec;17(12):6924-31. PMID:9372924
  12. ↑ Wang Q, Goh AM, Howley PM, Walters KJ. Ubiquitin recognition by the DNA repair protein hHR23a. Biochemistry. 2003 Nov 25;42(46):13529-35. PMID:14621999 doi:10.1021/bi035391j
  13. ↑ Raasi S, Pickart CM. Rad23 ubiquitin-associated domains (UBA) inhibit 26 S proteasome-catalyzed proteolysis by sequestering lysine 48-linked polyubiquitin chains. J Biol Chem. 2003 Mar 14;278(11):8951-9. PMID:12643283
  14. ↑ Raasi S, Orlov I, Fleming KG, Pickart CM. Binding of polyubiquitin chains to ubiquitin-associated (UBA) domains of HHR23A. J Mol Biol. 2004 Aug 27;341(5):1367-79. PMID:15321727 doi:10.1016/j.jmb.2004.06.057
  15. ↑ Li G, Elder RT, Dubrovsky L, Liang D, Pushkarsky T, Chiu K, Fan T, Sire J, Bukrinsky M, Zhao RY. HIV-1 replication through hHR23A-mediated interaction of Vpr with 26S proteasome. PLoS One. 2010 Jun 29;5(6):e11371. doi: 10.1371/journal.pone.0011371. PMID:20614012 doi:10.1371/journal.pone.0011371

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