Detailed information of relaxase

Relaxase

• ID: 202
• GenBank: AAQ98619
• Name: TraI_R1
• UniProt ID: Q6TDU5
• Family: MOB_F
• PDB ID: 4L0J
• Length: 1756 a.a.
• Note: TraI; relaxase; oriT nicking and unwinding

Protein sequence

• Length: 1756 a.a.
• Molecular weight: 191754.64 Da
• Isoelectric Point: 5.9593

>AAQ98619.1 DNA helicase I (plasmid) [Escherichia coli]
MMSIAQVRSAGSAGNYYTDKDNYYVLGSMGERWAGKGAEQLGLQGSVDKDVFTRLLEGRLPDGADLSRMQ
DGSNKHRPGYDLTFSAPKSVSMMAMLGGDKRLIDAHNQAVDFAVRQVEALASTRVMTDGQSETVLTGNLV
MALFNHDTSRDQEPQLHTHAVVANVTQHNGEWKTLSSDKVGKTGFIENVYANQIAFGRLYREKLKEQVEA
LGYETEVVGKHGMWEMPGVPVEAFSGRSQAIREAVGEDASLKSRDVAALDTRKSKQHVDPEIRMAEWMQT
LKETGFDIRAYRDAADQRTEIRTQAPGPASQDGPDVQQAVTQAIAGLSERKVQFTYTDVLARTVGILPPE
NGVIERARAGIDEAISREQLIPLDREKGLFTSGIHVLDELSVRALSRDIMKQNRVTVHPEKSVPRTAGYS
DAVSVLAQDRPSLAIVSGQGGAAGQRERVAELVMMAREQGREVQIIAADRRSQMNLKQDERLSGELITGR
RQLLEGMAFTPGSTVIVDQGEKLSLKETLTLLDGAARHNVQVLITDSGQRTGTGSALMAMKDAGVNTYRW
QGGEQRPATIISEPDRNVRYARLAGDFAASVKAGEESVAQVSGVREQAILTQAIRSELKTQGVLGHPEVT
MTALSPVWLDSRSRYLRDMYRPGMVMEQWNPETRSHDRYVIDRVTAQSHSLTLRDAQGETQVVRISSLDS
SWSLFRPEKMPVADGERLRVTGKIPGLRVSGGDRLQVASVSEDAMTVVVPGRAEPASLPVSDSPFTALKL
ENGWVETPGHSVSDSATVFASVTQMAMDNATLNGLARSGRDVRLYSSLDETRTAEKLARHPSFTVVSEQI
KARAGETLLETAISLQKAGLHTPAQQAIHLALPVLESKNLAFSMVDLLTEAKSFAAEGTGFTELGGEINA
QIKRGDLLYVDVAKGYGTGLLVSRASYEAEKSILRHILEGKEAVTPLMERVPGELMETLTSGQRAATRMI
LETSDRFTVVQGYAGVGKTTQFRAVMSAVNMLPASERPRVVGLGPTHRAVGEMRSAGVDAQTLASFLHDT
QLQQRSGETPDFSNTLFLLDESSMVGNTEMARAYALIAAGGGRAVASGDTDQLQAIAPGQSFRLQQTRSA
ADVVIMKEIVRQTPELREAVYSLINRDVERALSGLESVKPSQVPRLEGAWAPEHSVTEFSHSQEAKLAEA
QQKAMLKGEAFPDIPMTLYEAIVRDYTGRTPEAREQTLIVTHLNEDRRVLNSMIHDAREKAGELGKEQVM
VPVLNTANIRDGELRRLSTWEKNPDALALVDNVYHRIAGISKDDGLITLQDAEGNTRLISPREAVAEGVT
LYTPDKIRVGTGDRMRFTKSDRERGYVANSVWTVTAVSGDSVTLSDGQQTRVIRPGQERAEQHIDLAYAI
TAHGAQGASETFAIALEGTEGNRKLMAGFESAYVALSRMKQHVQVYTDNRQGWTDAINNAVQKGTAHDVL
EPKPDREVMNAQRLFSTARELRDVAAGRAVLRQAGLAGGDSPARFIAPGRKYPQPYVALPAFDRNGKSAG
IWLNPLTTDDGNGLRGFSGEGRVKGSGDAQFVALQGSRNGESLLADNMQDGVRIARDNPDSGVVVRIAGE
GRPWNPGAITGGRVWGDIPDNSVQPGAGNGEPVTAEVLAQRQAEEAIRRETERRADEIVRKMAENKPDLP
DGKTELAVRDIAGQERDRSAISERETALPESVLRESQREREAVREVARENLLQERLQQMERDMVRDLQKE
KTLGGD

Protein domains

Predicted by InterproScan

• DNA relaxase TraI 2B/2B-like domain (TraI_2B) (633-712)

• DNA helicase TraI (TraI_C) (1434-1557)

• AAA domain (AAA_30) (968-1156)

• TrwC relaxase (TrwC) (10-283)

• single-stranded DNA binding TraI N-terminal subdomain (ssDNA_TraI_N) (575-626)

Protein structure

• PDB: 4L0J

Reference

[1] Csitkovits VC et al. (2004) Concomitant reconstitution of TraI-catalyzed DNA transesterase and DNA helicase activity in vitro. J Biol Chem. 279(44):45477-84. [PMID:15322083]
[2] Schwab M et al. (1991) The TraM protein of plasmid R1 is a DNA-binding protein. Mol Microbiol. 5(2):439-46. [PMID:2041477]