Structure of PDB 6kql Chain D

Receptor sequence

>6kqlD (length=1486) Species: 300852 (Thermus thermophilus HB8)

KEVRKVRIALASPEKIRSWSYGEVEKPETINYRTLKPERDGLFDERIFGP
IKDYECACGKYKRQRFEGKVCERCGVEVTKSIVRRYRMGHIELATPAAHI
WFVKDVPSKIGTLLDLSATELEQVLYFSKYIVLDPKGAILNGVPVEKRQL
LTDEEYRELRYGKQETYPLPPGVDALVKDGEEVVKGQELAPGVVSRLDGV
ALYRFPRRVRVEYVKKERAGLRLPLAAWVEKEAYKPGEILAELPEPYLFR
AEEEGVVELKELEEGAFLVLRREDEPVATYFLPVGMTPLVVHGEIVEKGQ
PLAEAKGLLRMPRQVRAAQVEAEEEGETVYLTLFLEWTEPKDYRVQPHMN
VVVPEGARVEAGDKIVAAIDPEEEVIAEAEGVVHLHEPASILVVKARVYP
FEDDVEVSTGDRVAPGDVLADGGKVKSDVYGRVEVDLVRNVVRVVESYDI
DARMGAEAIQQLLKELDLEALEKELLEEMKHPSRARRAKARKRLEVVRAF
LDSGNRPEWMILEAVPVLPPDLRPMVQVDGGRFATSDLNDLYRRLINRNN
RLKKLLAQGAPEIIIRNEKRMLQEAVDALLDNGRRGAPVTNPGSDRPLRS
LTDILSGKQGRFRQNLLGKRVDYSGRSVIVVGPQLKLHQCGLPKRMALEL
FKPFLLKKMEEKGIAPNVKAARRMLERQRDIKDEVWDALEEVIHGKVVLL
NRAPTLHRLGIQAFQPVLVEGQSIQLHPLVCEAFNADFDGDQMAVHVPLS
SFAQAEARIQMLSAHNLLSPASGEPLAKPSRDIILGLYYITQVRKEKKGA
GLEFATPEEALAAHERGEVALNAPIKVAGRETSVGRLKYVFANPDEALLA
VAHGIVDLQDVVTVRYMGKRLETSPGRILFARIVAEAVEDEKVAWELIQL
DVPQEKNSLKDLVYQAFLRLGMEKTARLLDALKYYGFTFSTTSGITIGID
DAVIPEEKKQYLEEADRKLLQIEQAYEMGFLTDRERYDQILQLWTETTEK
VTQAVFKNFEENYPFNPLYVMAQSGARGNPQQIRQLCGLRGLMQKPSGET
FEVPVRSSFREGLTVLEYFISSHGARKGGADTALRTADSGYLTRKLVDVT
HEIVVREADCGTTNYISVPLFQPDEVTRSLRLRKRADIEAGLYGRVLARE
VEVLGVRLEEGRYLSMDDVHLLIKAAEAGEIQEVPVRSPLTCQTRYGVCQ
KCYGYDLSMARPVSIGEAVGIVAAQSIGEPGTQLTITQGLPRVIELFEAR
RPKAKAVISEIDGVVRIEETEEKLSVFVESEGFSKEYKLPKEARLLVKDG
DYVEAGQPLTRGAIDPHQLLEAKGPEAVERYLVEEIQKVYRAQGVKLHDK
HIEIVVRQMMKYVEVTDPGDSRLLEGQVLEKWDVEALNERLIAEGKTPVA
WKPLLMGVTKSALSTKSWLSAASFQNTTHVLTEAAIAGKKDELIGLKENV
ILGRLIPAGTGSDFVRFTQVVDQKTLKAIEEARKEA

3D structure

• PDB: 6kql RNA extension drives a stepwise displacement of an initiation-factor structural module in initial transcription.
• Chain: D
• Resolution: 2.89 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	D	K610 R622 R628 A705 T1088 A1089 Y1093 Q1441 N1442	K608 R620 R626 A703 T1086 A1087 Y1091 Q1425 N1426
BS02	dna	D	R1266 K1426	R1250 K1410
BS03	rna	D	R704 D741 D743	R702 D739 D741
BS04	ZN	D	C1112 C1194 C1201 C1204	C1110 C1192 C1199 C1202
BS05	ZN	D	C58 C73 C76	C56 C71 C74
BS06	MG	D	D739 D741 D743	D737 D739 D741
BS07	MG	D	W897 E898 I900	W895 E896 I898

Gene Ontology

Molecular Function

• GO:0000287 magnesium ion binding
• GO:0003677 DNA binding
• GO:0003899 DNA-directed 5'-3' RNA polymerase activity
• GO:0005515 protein binding
• GO:0008270 zinc ion binding
• GO:0016779 nucleotidyltransferase activity
• GO:0034062 5'-3' RNA polymerase activity
• GO:0046872 metal ion binding

Biological Process

• GO:0006351 DNA-templated transcription

Cellular Component

• GO:0000428 DNA-directed RNA polymerase complex

External links

• PDB: RCSB:6kql, PDBe:6kql, PDBj:6kql
• PDBsum: 6kql
• PubMed: 32127479
• UniProt: Q8RQE8|RPOC_THET8 DNA-directed RNA polymerase subunit beta' (Gene Name=rpoC)