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9ymx

De novo initial transcribing RNA polymerase with 5-mer RNA AUCUA (RPitc5b)

Method: ELECTRON MICROSCOPY D_max: 173.8 Å Quality: REASONABLE

SAXS Profile

P(r) Distribution

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1. Structure Basics

entry_id	9ymx
deposition_date	2025-10-10
title	De novo initial transcribing RNA polymerase with 5-mer RNA AUCUA (RPitc5b)
keywords	RNA polymerase, initial transcribing complex, nucleotide addition, promoter escape, TRANSCRIPTION; TRANSCRIPTION
method	ELECTRON MICROSCOPY

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Download Data

SAXS curve (.dat) P(r) distribution (.pr.out) Structure (CIF)

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2. SAXS Parameters (CRYSOL)

rg_guinier	52.33 Å
rg_electron	52.30 Å
i0	2931060000.00
molecular_weight	434300.0 kDa
excluded_volume	536700 Å³
envelope_volume	817900 Å³
shell_volume	125230 Å³
envelope_diameter	189.1 Å
shell_rg	59.06 Å
envelope_rg	52.23 Å
shape_rg	52.31 Å
total_rg	52.44 Å
total_atoms	30392
n_residues	3748
n_harmonics	20
q_range	— – 0.5000 Å⁻¹
n_points	101
shell_type	directional
solvent_density	0.3340 e/Å³
contrast_shell	0.0300 e/Å³
crysol_version	4.1.3

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3. P(r) Analysis (GNOM)

dmax	173.8 Å
rg_real	52.22 Å
rg_real_error	1.30 Å
i0_real	2.9310e+09
i0_real_error	5.1200e+07
rg_reciprocal	52.41 Å
i0_reciprocal	2932000000.0000
total_estimate	0.6341
solution_quality	REASONABLE a REASONABLE solution
n_peaks	2
r_peak_primary	63.7 Å
skewness	0.331
kurtosis	-0.189
angular_range	— – 0.1500 Å⁻¹
current_alpha	0.0000
highest_alpha	584500000.0000
n_real_points	31
gnom_version	4.1.3
quality_criteria	AN1: 0.000; Oscil: 0.814; Stabil: 1.000; Sysdev: 0.007; Positv: 1.000; Valcen: 0.961; Smooth: 0.815

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4. Crystallography & Experiment

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5. Entities & Polymer Info (12)

Entity 1 polymer

description	DNA-directed RNA polymerase subunit beta
formula_weight	150820.9 kDa
ec_number	2.7.7.6
src_method	man
entity_count	1

Polymer

type	polypeptide(L)
strand_id	I
atom_count	31075

MVYSYTEKKRIRKDFGKRPQVLDVPYLLSIQLDSFQKFIEQDPEGQYGLEAAFRSVFPIQSYSGNSELQYVSYRLGEPVFDVQECQIRGVTYSAPLRVKLRLVIYEREAPEGTVKDIKEQEVYMGEIPLMTDNGTFVINGTERVIVSQLHRSPGVFFDSDKGKTHSSGKVLYNARIIPYRGSWLDFEFDPKDNLFVRIDRRRKLPATIILRALNYTTEQILDLFFEKVIFEIRDNKLQMELVPERLRGETASFDIEANGKVYVEKGRRITARHIRQLEKDDVKLIEVPVEYIAGKVVAKDYIDESTGELICAANMELSLDLLAKLSQSGHKRIETLFTNDLDHGPYISETLRVDPTNDRLSALVEIYRMMRPGEPPTREAAESLFENLFFSEDRYDLSAVGRMKFNRSLLREEIEGSGILSKDDIIDVMKKLIDIRNGKGEVDDIDHLGNRRIRSVGEMAENQFRVGLVRVERAVKERLSLGDLDTLMPQDMINAKPISAAVKEFFGSSQLSQFMDQNNPLSEITHKRRISALGPGGLTRERAGFEVRDVHPTHYGRVCPIETPEGPNIGLINSLSVYAQTNEYGFLETPYRKVTDGVVTDEIHYLSAIEEGNYVIAQANSNLDEEGHFVEDLVTCRSKGESSLFSRDQVDYMDVSTQQVVSVGASLIPFLEHDDANRALMGANMQRQAVPTLRADKPLVGTGMERAVAVDSGVTAVAKRGGVVQYVDASRIVIKVNEDEMYPGEAGIDIYNLTKYTRSNQNTCINQMPCVSLGEPVERGDVLADGPSTDLGELALGQNMRVAFMPWNGYNFEDSILVSERVVQEDRFTTIHIQELACVSRDTKLGPEEITADIPNVGEAALSKLDESGIVYIGAEVTGGDILVGKVTPKGETQLTPEEKLLRAIFGEKASDVKDSSLRVPNGVSGTVIDVQVFTRDGVEKDKRALEIEEMQLKQAKKDLSEELQILEAGLFSRIRAVLVAGGVEAEKLDKLPRDRWLELGLTDEEKQNQLEQLAEQYDELKHEFEKKLEAKRRKITQGDDLAPGVLKIVKVYLAVKRRIQPGDKMAGRHGNKGVISKINPIEDMPYDENGTPVDIVLNPLGVPSRMNIGQILETHLGMAAKGIGDKINAMLKQQQEVAKLREFIQRAYDLGADVRQKVDLSTFSDEEVMRLAENLRKGMPIATPVFDGAKEAEIKELLKLGDLPTSGQIRLYDGRTGEQFERPVTVGYMYMLKLNHLVDDKMHARSTGSYSLVTQQPLGGKAQFGGQRFGEMEVWALEAYGAAYTLQEMLTVKSDDVNGRTKMYKNIVDGNHQMEPGMPESFNVLLKEIRSLGINIELEDE

Source

organism	Escherichia coli
ncbi_taxonomy_id	562
host_organism	Escherichia coli

Entity 2 polymer

description	DNA-directed RNA polymerase subunit omega
formula_weight	10249.5 kDa
ec_number	2.7.7.6
src_method	man
entity_count	1

Polymer

type	polypeptide(L)
strand_id	K

MARVTVQDAVEKIGNRFDLVLVAARRARQMQVGGKDPLVPEENDKTTVIALREIEEGLINNQILDVRERQEQQEQEAAELQAVTAIAEGRR

Source

organism	Escherichia coli
ncbi_taxonomy_id	562
host_organism	Escherichia coli

Entity 3 polymer

description	Nascent RNA
formula_weight	1531.0 kDa
src_method	syn
entity_count	1

Polymer

type	polyribonucleotide
strand_id	R

AUCUA

Entity 4 polymer

description	T7A1 promoter fragment non-template strand
formula_weight	29967.3 kDa
src_method	syn
entity_count	1

Polymer

type	polydeoxyribonucleotide
strand_id	P

GCTTAATTTAAAATTTATCAAAAAGAGTATTGACTTAAAGTCTAACCTATAGGATACTTACAGCCATCGAGAGGGACACGGCGAATAGCCATCCCGG

Entity 5 polymer

description	DNA-directed RNA polymerase subunit alpha
formula_weight	36558.7 kDa
ec_number	2.7.7.6
src_method	man
entity_count	2

Polymer

type	polypeptide(L)
strand_id	G,H

MQGSVTEFLKPRLVDIEQVSSTHAKVTLEPLERGFGHTLGNALRRILLSSMPGCAVTEVEIDGVLHEYSTKEGVQEDILEILLNLKGLAVRVQGKDEVILTLNKSGIGPVTAADITHDGDVEIVKPQHVICHLTDENASISMRIKVQRGRGYVPASTRIHSEEDERPIGRLLVDACYSPVERIAYNVEAARVEQRTDLDKLVIEMETNGTIDPEEAIRRAATILAEQLEAFVDLRDVRQPEVKEEKPEFDPILLRPVDDLELTVRSANCLKAEAIHYIGDLVQRTEVELLKTPNLGKKSLTEIKDVLASRGLSLGMRLENWPPASIADE

Source

organism	Escherichia coli
ncbi_taxonomy_id	562
host_organism	Escherichia coli

Entity 6 polymer

description	;DNA-directed RNA polymerase subunit beta' ;
formula_weight	156338.9 kDa
ec_number	2.7.7.6
src_method	man
entity_count	1

Polymer

type	polypeptide(L)
strand_id	J

MKDLLKFLKAQTKTEEFDAIKIALASPDMIRSWSFGEVKKPETINYRTFKPERDGLFCARIFGPVKDYECLCGKYKRLKHRGVICEKCGVEVTQTKVRRERMGHIELASPTAHIWFLKSLPSRIGLLLDMPLRDIERVLYFESYVVIEGGMTNLERQQILTEEQYLDALEEFGDEFDAKMGAEAIQALLKSMDLEQECEQLREELNETNSETKRKKLTKRIKLLEAFVQSGNKPEWMILTVLPVLPPDLRPLVPLDGGRFATSDLNDLYRRVINRNNRLKRLLDLAAPDIIVRNEKRMLQEAVDALLDNGRRGRAITGSNKRPLKSLADMIKGKQGRFRQNLLGKRVDYSGRSVITVGPYLRLHQCGLPKKMALELFKPFIYGKLELRGLATTIKAAKKMVEREEAVVWDILDEVIREHPVLLNRAPTLHRLGIQAFEPVLIEGKAIQLHPLVCAAYNADFDGDQMAVHVPLTLEAQLEARALMMSTNNILSPANGEPIIVPSQDVVLGLYYMTRDCVNAKGEGMVLTGPKEAERLYRSGLASLHARVKVRITEYEKDANGELVAKTSLKDTTVGRAILWMIVPKGLPYSIVNQALGKKAISKMLNTCYRILGLKPTVIFADQIMYTGFAYAARSGASVGIDDMVIPEKKHEIISEAEAEVAEIQEQFQSGLVTAGERYNKVIDIWAAANDRVSKAMMDNLQTETVINRDGQEEKQVSFNSIYMMADSGARGSAAQIRQLAGMRGLMAKPDGSIIETPITANFREGLNVLQYFISTHGARKGLADTALKTANSGYLTRRLVDVAQDLVVTEDDCGTHEGIMMTPVIEGGDVKEPLRDRVLGRVTAEDVLKPGTADILVPRNTLLHEQWCDLLEENSVDAVKVRSVVSCDTDFGVCAHCYGRDLARGHIINKGEAIGVIAAQSIGEPGTQLTMRTFHIGGAASRAAAESSIQVKNKGSIKLSNVKSVVNSSGKLVITSRNTELKLIDEFGRTKESYKVPYGAVLAKGDGEQVAGGETVANWDPHTMPVITEVSGFVRFTDMIDGQTITRQTDELTGLSSLVVLDSAERTAGGKDLRPALKIVDAQGNDVLIPGTDMPAQYFLPGKAIVQLEDGVQISSGDTLARIPQESGGTKDITGGLPRVADLFEARRPKEPAILAEISGIVSFGKETKGKRRLVITPVDGSDPYEEMIPKWRQLNVFEGERVERGDVISDGPEAPHDILRLRGVHAVTRYIVNEVQDVYRLQGVKINDKHIEVIVRQMLRKATIVNAGSSDFLEGEQVEYSRVKIANRELEANGKVGATYSRDLLGITKASLATESFISAASFQETTRVLTEAAVAGKRDELRGLKENVIVGRLIPAGTGYAYHQDRMRRRAAGEAPAAPQVTAEDASASLAELLNAGLGGSDNELELEVLFQ

Source

organism	Escherichia coli
ncbi_taxonomy_id	562
host_organism	Escherichia coli

Entity 7 polymer

description	RNA polymerase sigma factor RpoD
formula_weight	70715.6 kDa
src_method	man
entity_count	1

Polymer

type	polypeptide(L)
strand_id	L

SEFMEQNPQSQLKLLVTRGKEQGYLTYAEVNDHLPEDIVDSDQIEDIIQMINDMGIQVMEEAPDADDLMLAENTADEDAAEAAAQVLSSVESEIGRTTDPVRMYMREMGTVELLTREGEIDIAKRIEDGINQVQCSVAEYPEAITYLLEQYDRVEAEEARLSDLITGFVDPNAEEDLAPTATHVGSELSQEDLDDDEDEDEEDGDDDSADDDNSIDPELAREKFAELRAQYVVTRDTIKAKGRSHATAQEEILKLSEVFKQFRLVPKQFDYLVNSMRVMMDRVRTQERLIMKLCVEQCKMPKKNFITLFTGNETSDTWFNAAIAMNKPWSEKLHDVSEEVHRALQKLQQIEEETGLTIEQVKDINRRMSIGEAKARRAKKEMVEANLRLVISIAKKYTNRGLQFLDLIQEGNIGLMKAVDKFEYRRGYKFSTYATWWIRQAITRSIADQARTIRIPVHMIETINKLNRISRQMLQEMGREPTPEELAERMLMPEDKIRKVLKIAKEPISMETPIGDDEDSHLGDFIEDTTLELPLDSATTESLRAATHDVLAGLTAREAKVLRMRFGIDMNTDYTLEEVGKQFDVTRERIRQIEAKALRKLRHPSRSEVLRSFLDD

Source

organism	Escherichia coli
ncbi_taxonomy_id	562
host_organism	Escherichia coli

Entity 8 polymer

description	T7A1 promoter fragment template strand
formula_weight	29868.1 kDa
src_method	syn
entity_count	1

Polymer

type	polydeoxyribonucleotide
strand_id	Q

CCGGGATGGCTATTCGCCGTGTCCCTCTCGATGGCTGTAAGTATCCTATAGGTTAGACTTTAAGTCAATACTCTTTTTGATAAATTTTAAATTAAGC

Entity 9 non-polymer

description	PYROPHOSPHATE 2-
formula_weight	176.0 kDa
src_method	syn
entity_count	1

Entity 10 non-polymer

description	MAGNESIUM ION
formula_weight	24.3 kDa
src_method	syn
entity_count	1

Entity 11 non-polymer

description	ZINC ION
formula_weight	65.4 kDa
src_method	syn
entity_count	2

Entity 12 water

description	water
formula_weight	18.0 kDa
src_method	nat
entity_count	683

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6. Citations (1)

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length_a	1.000 Å
length_b	1.000 Å
length_c	1.000 Å
angle_alpha	90.00 °
angle_beta	90.00 °
angle_gamma	90.00 °
z_pdb	—

space_group	P 1
int_tables_number	1
crystal_system	—

resolution	2.70 Å
resolution_method	—
num_particles	153106

fit	/app/data/saxs_computation/ym/9ymx/9ymx.fit
pddf	/app/data/pr_computation/ym/9ymx/9ymx.pr.out
profile	/app/data/saxs_computation/ym/9ymx/9ymx.dat

De novo initial transcribing RNA polymerase with 5-mer RNA AUCUA (RPitc5b)

SAXS Profile

P(r) Distribution

1. Structure Basics

Download Data

2. SAXS Parameters (CRYSOL)

3. P(r) Analysis (GNOM)

4. Crystallography & Experiment

Unit Cell

Symmetry

EM 3D

5. Entities & Polymer Info (12)

Entity 1 polymer

Polymer

Source

Entity 2 polymer

Polymer

Source

Entity 3 polymer

Polymer

Entity 4 polymer

Polymer

Entity 5 polymer

Polymer

Source

Entity 6 polymer

Polymer

Source

Entity 7 polymer

Polymer

Source

Entity 8 polymer

Polymer

Entity 9 non-polymer

Entity 10 non-polymer

Entity 11 non-polymer

Entity 12 water

6. Citations (1)

7. Files & Curves (10)

Files (7)

Curves (3)