Structure of PDB 7mko Chain C

Receptor sequence

>7mkoC (length=1320) Species: 83333 (Escherichia coli K-12)

YSYTEKKRIRKDFGKRPQVLDVPYLLSIQLDSFQKFIEQDPEGQYGLEAA
FRSVFPIQSYSGNSELQYVSYRLGEPVFDVQECQIRGVTYSAPLRVKLRL
VIYEREAPEGTVKDIKEQEVYMGEIPLMTDNGTFVINGTERVIVSQLHRS
PGVFFDSDKGKTHSSGKVLYNARIIPYRGSWLDFEFDPKDNLFVRIDRRR
KLPATIILRALNYTTEQILDLFFEKVIFEIRDNKLQMELVPERLRGETAS
FDIEANGKVYVEKGRRITARHIRQLEKDDVKLIEVPVEYIAGKVVAKDYI
DESTGELICAANMELSLDLLAKLSQSGHKRIETLFTNDLDHGPYISETLR
VDPTNDRLSALVEIYRMMRPGEPPTREAAESLFENLFFSEDRYDLSAVGR
MKFNRSLLREEIEGSGILSKDDIIDVMKKLIDIRNGKGEVDDIDHLGNRR
IRSVGEMAENQFRVGLVRVERAVKERLSLGDLDTLMPQDMINAKPISAAV
KEFFGSSQLSQFMDQNNPLSEITHKRRISALGPGGLTRERAGFEVRDVHP
THYGRVCPIETPEGPNIGLINSLSVYAQTNEYGFLETPYRKVTDGVVTDE
IHYLSAIEEGNYVIAQANSNLDEEGHFVEDLVTCRSKGESSLFSRDQVDY
MDVSTQQVVSVGASLIPFLEHDDANRALMGANMQRQAVPTLRADKPLVGT
GMERAVAVDSGVTAVAKRGGVVQYVDASRIVIKVNEDEMYPGEAGIDIYN
LTKYTRSNQNTCINQMPCVSLGEPVERGDVLADGPSTDLGELALGQNMRV
AFMPWNGYNFEDSILVSERVVQEDRFTTIHIQELACVSRDTKLGPEEITA
DIPNVGEAALSKLDESGIVYIGAEVTGGDILVGKVTPKSDVKDSSLRVPN
GVSGTVIDVQVFTRDGVEKDKRALEIEEMQLKQAKKDLSEELQILEAGLF
SRIRAVLVAGGVEAEKLDKLPRDRWLELGLTDEEKQNQLEQLAEQYDELK
HEFEKKLEAKRRKITQGDDLAPGVLKIVKVYLAVKRRIQPGDKMAGRHGN
KGVISKINPIEDMPYDENGTPVDIVLNPLGVPSRMNIGQILETHLGMAAK
GIGDKINAMLKQQQEVAKLREFIQRAYDLGADVRQKVDLSTFSDEEVMRL
AENLRKGMPIATPVFDGAKEAEIKELLKLGDLPTSGQIRLYDGRTGEQFE
RPVTVGYMYMLKLNHLVDDKMHARSTGSYSLVTQQPLGGKAQFGGQRFGE
MEVWALEAYGAAYTLQEMLTVKSDDVNGRTKMYKNIVDGNHQMEPGMPES
FNVLLKEIRSLGINIELEDE

3D structure

• PDB: 7mko Structural basis of RNA polymerase recycling by the Swi2/Snf2 family of ATPase RapA in Escherichia coli.
• Chain: C
• Resolution: 3.15 Å

Enzymatic activity

• Enzyme Commision number: 2.7.7.6: DNA-directed RNA polymerase.

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	dna	C	R151 K163 R175 W183 D199 I445 R451 R542	R149 K161 R173 W181 D197 I443 R449 R540
BS02	rna	C	Q510 Q513 R540 P564 Q688 K1065 K1073 H1237 S1252 L1253 L1259	Q508 Q511 R538 P562 Q686 K1043 K1051 H1215 S1230 L1231 L1237
BS03	dna	C	N139 R143 H165 S508 F514 R542 K1262 R1269	N137 R141 H163 S506 F512 R540 K1240 R1247

Gene Ontology

Molecular Function

• GO:0003677 DNA binding
• GO:0003899 DNA-directed 5'-3' RNA polymerase activity
• GO:0005515 protein binding
• GO:0016779 nucleotidyltransferase activity
• GO:0032549 ribonucleoside binding
• GO:0034062 5'-3' RNA polymerase activity

Biological Process

• GO:0006351 DNA-templated transcription
• GO:0006352 DNA-templated transcription initiation
• GO:0006879 intracellular iron ion homeostasis
• GO:0009408 response to heat
• GO:0031564 transcription antitermination
• GO:0032784 regulation of DNA-templated transcription elongation
• GO:0036460 cellular response to cell envelope stress
• GO:0042128 nitrate assimilation
• GO:0044780 bacterial-type flagellum assembly
• GO:0046677 response to antibiotic
• GO:0048870 cell motility
• GO:0071973 bacterial-type flagellum-dependent cell motility
• GO:0090605 submerged biofilm formation
• GO:2000142 regulation of DNA-templated transcription initiation

Cellular Component

• GO:0000345 cytosolic DNA-directed RNA polymerase complex
• GO:0000428 DNA-directed RNA polymerase complex
• GO:0005737 cytoplasm
• GO:0005829 cytosol
• GO:0008023 transcription elongation factor complex
• GO:0016020 membrane

External links

• PDB: RCSB:7mko, PDBe:7mko, PDBj:7mko
• PDBsum: 7mko
• PubMed: 34774797
• UniProt: P0A8V2|RPOB_ECOLI DNA-directed RNA polymerase subunit beta (Gene Name=rpoB)