Structure of PDB 6n4c Chain C

Receptor sequence

>6n4cC (length=1341) Species: 83333 (Escherichia coli K-12)

VYSYTEKKRIRKDFGKRPQVLDVPYLLSIQLDSFQKFIEQDPEGQYGLEA
AFRSVFPIQSYSGNSELQYVSYRLGEPVFDVQECQIRGVTYSAPLRVKLR
LVIYEREAPEGTVKDIKEQEVYMGEIPLMTDNGTFVINGTERVIVSQLHR
SPGVFFDSDKGKTHSSGKVLYNARIIPYRGSWLDFEFDPKDNLFVRIDRR
RKLPATIILRALNYTTEQILDLFFEKVIFEIRDNKLQMELVPERLRGETA
SFDIEANGKVYVEKGRRITARHIRQLEKDDVKLIEVPVEYIAGKVVAKDY
IDESTGELICAANMELSLDLLAKLSQSGHKRIETLFTNDLDHGPYISETL
RVDPTNDRLSALVEIYRMMRPGEPPTREAAESLFENLFFSEDRYDLSAVG
RMKFNRSLLREEIEGSGILSKDDIIDVMKKLIDIRNGKGEVDDIDHLGNR
RIRSVGEMAENQFRVGLVRVERAVKERLSLGDLDTLMPQDMINAKPISAA
VKEFFGSSQLSQFMDQNNPLSEITHKRRISALGPGGLTRERAGFEVRDVH
PTHYGRVCPIETPEGPNIGLINSLSVYAQTNEYGFLETPYRKVTDGVVTD
EIHYLSAIEEGNYVIAQANSNLDEEGHFVEDLVTCRSKGESSLFSRDQVD
YMDVSTQQVVSVGASLIPFLEHDDANRALMGANMQRQAVPTLRADKPLVG
TGMERAVAVDSGVTAVAKRGGVVQYVDASRIVIKVNEDEMYPGEAGIDIY
NLTKYTRSNQNTCINQMPCVSLGEPVERGDVLADGPSTDLGELALGQNMR
VAFMPWNGYNFEDSILVSERVVQEDRFTTIHIQELACVSRDTKLGPEEIT
ADIPNVGEAALSKLDESGIVYIGAEVTGGDILVGKVTPKGETQLTPEEKL
LRAIFGEKASDVKDSSLRVPNGVSGTVIDVQVFTRDGVEKDKRALEIEEM
QLKQAKKDLSEELQILEAGLFSRIRAVLVAGGVEAEKLDKLPRDRWLELG
LTDEEKQNQLEQLAEQYDELKHEFEKKLEAKRRKITQGDDLAPGVLKIVK
VYLAVKRRIQPGDKMAGRHGNKGVISKINPIEDMPYDENGTPVDIVLNPL
GVPSRMNIGQILETHLGMAAKGIGDKINAMLKQQQEVAKLREFIQRAYDL
GADVRQKVDLSTFSDEEVMRLAENLRKGMPIATPVFDGAKEAEIKELLKL
GDLPTSGQIRLYDGRTGEQFERPVTVGYMYMLKLNHLVDDKMHARSTGSY
SLVTQQPLGGKAQFGGQRFGEMEVWALEAYGAAYTLQEMLTVKSDDVNGR
TKMYKNIVDGNHQMEPGMPESFNVLLKEIRSLGINIELEDE

3D structure

• PDB: 6n4c Interactions of Upstream and Downstream Promoter Regions with RNA Polymerase are Energetically Coupled and a Target of Regulation in Transcription Initiation
• Chain: C
• Resolution: 17.0 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	K163 W183 D199 R200 R201 M370 R371 T377 R394 R470 R473 R542	K162 W182 D198 R199 R200 M369 R370 T376 R393 R469 R472 R541
BS02	dna	C	R143 H165 S166 P190 K191 R202 K203 R478 N494 K496 P497 R758 G1261 K1262 A1263 Q1268 R1269	R142 H164 S165 P189 K190 R201 K202 R477 N493 K495 P496 R757 G1260 K1261 A1262 Q1267 R1268

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:6n4c, PDBe:6n4c, PDBj:6n4c
• PDBsum: 6n4c
• UniProt: P0A8V2|RPOB_ECOLI DNA-directed RNA polymerase subunit beta (Gene Name=rpoB)