Structure of PDB 6kqh Chain C

Receptor sequence

>6kqhC (length=1112) Species: 300852 (Thermus thermophilus HB8)

MEIKRFGRIREVIPLPPLTEIQVESYRRALQADVPPEKRENVGIQAAFRE
TFPIEEGLVLDFLEYRLGEPPFPQDECREKDLTYQAPLYARLQLIHKDTG
LIKEDEVFLGHIPLMTEDGSFIINGADRVIVSQIHRSPGVYFTPDPARPG
RYIASIIPLPKRGPWIDLEVEPNGVVSMKVNKRKFPLVLLLRVLGYDQET
LARELGAYGELVQGLMDESVFAMRPEEALIRLFTLLRPGDPPKRDKAVAY
VYGLIADPRRYDLGEAGRYKAEEKLGIRLSGRTLARFEDGEFKDEVFLPT
LRYLFALTAGVPGHEVDDIDHLGNRRIRTVGELMTDQFRVGLARLARGVR
ERMLMGSEDSLTPAKLVNSRPLEAAIREFFSRSQLSQFKDETNPLSSLRH
KRRISALGPGGLTRERAGFDVRDVHRTHYGRICPVETPEGANIGLITSLA
AYARVDELGFIRTPYRRVVGGVVTDEVVYMTATEEDRYTIAQANTPLEGN
RIAAERVVARRKGEPVIVSPEEVEFMDVSPKQVFSVNTNLIPFLEHDDAN
RALMGSNMQTQAVPLIRAQAPVVMTGLEERVVRDSLAALYAEEDGEVAKV
DGNRIVVRYEDGRLVEYPLRRFYRSNQGTALDQRPRVVVGQRVRKGDLLA
DGPASENGFLALGQNVLVAIMPFDGYNFEDAIVISEELLKRDFYTSIHIE
RYEIEARDTKLGPERITRDIPHLSEAALRDLDEEGVVRIGAEVKPGDILV
GRTSFKGESEPTPEERLLRSIFGEKARDVKDTSLRVPPGEGGIVVRTVRL
RRGDPGVELKPGVREVVRVYVAQKRKLQVGDKLANRHGNKGVVAKILPVE
DMPHLPDGTPVDVILNPLGVPSRMNLGQILETHLGLAGYFLGQRYISPIF
DGAKEPEIKELLAQAFEVYFGKRKGEGFGVDKREVEVLRRAEKLGLVTPG
KTPEEQLKELFLQGKVVLYDGRTGEPIEGPIVVGQMFIMKLYHMVEDKMH
ARSTGPYSLITQQPLGGKAQFGGQRFGEMEVWALEAYGAAHTLQEMLTLK
SDDIEGRNAAYEAIIKGEDVPEPSVPESFRVLVKELQALALDVQTLDEKD
NPVDIFEGLASK

3D structure

• PDB: 6kqh RNA extension drives a stepwise displacement of an initiation-factor structural module in initial transcription.
• Chain: C
• Resolution: 3.18 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	R134 F394 G1023 R1031 M1035	R128 F388 G1017 R1025 M1029
BS02	dna	C	R142 K167 G169 P170 W171 R243 R266 D326 L418 R422 V427	R136 K161 G163 P164 W165 R237 R260 D320 L412 R416 V421
BS03	rna	C	R420 N448 Q567 K838 K846 H999	R414 N442 Q561 K832 K840 H993

Gene Ontology

Molecular Function

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

Biological Process

• GO:0006351 DNA-templated transcription

Cellular Component

• GO:0000428 DNA-directed RNA polymerase complex

External links

• PDB: RCSB:6kqh, PDBe:6kqh, PDBj:6kqh
• PDBsum: 6kqh
• PubMed: 32127479
• UniProt: Q8RQE9|RPOB_THET8 DNA-directed RNA polymerase subunit beta (Gene Name=rpoB)