Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords | 
| 1 | A (L0)  | 5'ETS rRNA | polymer | 700 | 225543.1 | 1 | GenBank (329138943) | Saccharomyces cerevisiae S288C | |
| 2 | B (L1)  | 18S rRNA | polymer | 1802 | 580701.0 | 1 | Saccharomyces cerevisiae S288C (Baker's yeast) | ||
| 3 | C (L2)  | U3 snoRNA | polymer | 334 | 106943.5 | 1 | Saccharomyces cerevisiae S288C (Baker's yeast) | ||
| 4 | D (L3)  | 40S ribosomal protein S18-A | polymer | 146 | 17071.6 | 1 | UniProt (P0CX55) | Saccharomyces cerevisiae S288C | Small ribosomal subunit protein uS13-A | 
| 5 | E (L4)  | 40S ribosomal protein S4-A | polymer | 261 | 29469.3 | 1 | UniProt (P0CX35) | Saccharomyces cerevisiae S288C | RP5,S7,YS6 | 
| 6 | F (L5)  | 40S ribosomal protein S5 | polymer | 225 | 25072.6 | 1 | UniProt (P26783) | Saccharomyces cerevisiae S288C | RP14,S2,YS8 | 
| 7 | G (L6)  | 40S ribosomal protein S6-A | polymer | 236 | 27054.5 | 1 | UniProt (P0CX37) | Saccharomyces cerevisiae S288C | RP9,S10,YS4 | 
| 8 | H (L7)  | 40S ribosomal protein S7-A | polymer | 190 | 21658.2 | 1 | UniProt (P26786) | Saccharomyces cerevisiae S288C | RP30,RP40 | 
| 9 | I (L8)  | 40S ribosomal protein S8-A | polymer | 200 | 22537.8 | 1 | UniProt (P0CX39) | Saccharomyces cerevisiae S288C | RP19,S14,YS9 | 
| 10 | J (L9)  | 40S ribosomal protein S9-A | polymer | 197 | 22487.9 | 1 | UniProt (O13516) | Saccharomyces cerevisiae S288C | RP21,S13,YP28,YS11 | 
| 11 | K (LC)  | 40S ribosomal protein S16-A | polymer | 143 | 15877.5 | 1 | UniProt (P0CX51) | Saccharomyces cerevisiae S288C | RP61R | 
| 12 | L (LD)  | 40S ribosomal protein S11-A | polymer | 156 | 17785.9 | 1 | UniProt (P0CX47) | Saccharomyces cerevisiae S288C | RP41,S18,YS12 | 
| 13 | M (LE)  | 40S ribosomal protein S22-A | polymer | 130 | 14650.1 | 1 | UniProt (P0C0W1) | Saccharomyces cerevisiae S288C | RP50,S24,YP58,YS22 | 
| 14 | N (LF)  | 40S ribosomal protein S24-A | polymer | 135 | 15362.8 | 1 | UniProt (P0CX31) | Saccharomyces cerevisiae S288C | RP50 | 
| 15 | O (LG)  | 40S ribosomal protein S28-A | polymer | 67 | 7605.8 | 1 | UniProt (Q3E7X9) | Saccharomyces cerevisiae S288C | S33,Small ribosomal subunit protein eS28-A,YS27 | 
| 16 | P (LH)  | NET1-associated nuclear protein 1 | polymer | 896 | 101341.7 | 1 | UniProt (Q02931) | Saccharomyces cerevisiae S288C | U three protein 17,t-17,U3 protein 17 required for transcription,U3 small nucleolar RNA-associated protein 17,U3 snoRNA-associated protein 17 | 
| 17 | Q (LI)  | U3 small nucleolar RNA-associated protein 8 | polymer | 713 | 80269.6 | 1 | UniProt (P53276) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 8,U three protein 8,U3 protein 8 required for transcription,t-UTP8 | 
| 18 | R (LJ)  | U3 small nucleolar RNA-associated protein 15 | polymer | 513 | 57765.3 | 1 | UniProt (Q04305) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 15,U three protein 15,U3 protein 15 required for transcription,t-UTP15 | 
| 19 | S (LK)  | U3 small nucleolar RNA-associated protein 9 | polymer | 575 | 65347.3 | 1 | UniProt (P38882) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 9,U three protein 9,U3 protein 9 required for transcription,t-UTP9 | 
| 20 | T (LL)  | U3 small nucleolar RNA-associated protein 5 | polymer | 643 | 72079.4 | 1 | UniProt (Q04177) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 5,U three protein 5,U3 protein 5 required for transcription,t-UTP5 | 
| 21 | U (LM)  | U3 small nucleolar RNA-associated protein 10 | polymer | 1769 | 200299.0 | 1 | UniProt (P42945) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 10,U three protein 10,U3 protein 10 required for transcription,t-UTP10 | 
| 22 | V (LN)  | U3 small nucleolar RNA-associated protein 4 | polymer | 776 | 87909.2 | 1 | UniProt (Q06679) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 4,U three protein 4,U3 protein 4 required for transcription,t-UTP4 | 
| 23 | W (LO)  | Periodic tryptophan protein 2 | polymer | 923 | 104097.0 | 1 | UniProt (P25635) | Saccharomyces cerevisiae S288C | U three protein 1,U3 small nucleolar RNA-associated protein 1,U3 snoRNA-associated protein 1 | 
| 24 | X (LP)  | U3 small nucleolar RNA-associated protein 6 | polymer | 440 | 52495.3 | 1 | UniProt (Q02354) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 6,U three protein 6 | 
| 25 | Y (LQ)  | U3 small nucleolar RNA-associated protein 12 | polymer | 943 | 106481.1 | 1 | UniProt (Q12220) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 12,DOM34-interacting protein 2,U three protein 12 | 
| 26 | Z (LR)  | U3 small nucleolar RNA-associated protein 13 | polymer | 817 | 91132.6 | 1 | UniProt (Q05946) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 13,U three protein 13 | 
| 27 | AA (LS)  | U3 small nucleolar RNA-associated protein 18 | polymer | 594 | 66574.2 | 1 | UniProt (P40362) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 18,U three protein 18 | 
| 28 | BA (LT)  | U3 small nucleolar RNA-associated protein 21 | polymer | 939 | 104927.8 | 1 | UniProt (Q06078) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 21,U three protein 21 | 
| 29 | CA (LU)  | Protein SOF1 | polymer | 489 | 56888.9 | 1 | UniProt (P33750) | Saccharomyces cerevisiae S288C | U3 small nucleolar RNA-associated protein SOF1,U3 snoRNA-associated protein SOF1 | 
| 30 | DA (LW)  | U3 small nucleolar RNA-associated protein 7 | polymer | 554 | 62418.6 | 1 | UniProt (P40055) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 7,U three protein 7 | 
| 31 | EA (LZ)  | U3 small nucleolar ribonucleoprotein protein IMP3 | polymer | 183 | 21928.5 | 1 | UniProt (P32899) | Saccharomyces cerevisiae S288C | U3 snoRNP protein IMP3,Interacting with MPP10 protein 3 | 
| 32 | FA (NA)  | U3 small nucleolar RNA-associated protein MPP10 | polymer | 593 | 67042.5 | 1 | UniProt (P47083) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein MPP10,M phase phosphoprotein 10 | 
| 33 | GA (NB)  | Something about silencing protein 10 | polymer | 610 | 70364.4 | 1 | UniProt (Q12136) | Saccharomyces cerevisiae S288C | U three protein 3,U3 small nucleolar RNA-associated protein 3,U3 snoRNA-associated protein 11 | 
| 34 | HA (ND)  | Bud site selection protein 21 | polymer | 214 | 24431.0 | 1 | UniProt (Q08492) | Saccharomyces cerevisiae S288C | U three protein 16,U3 small nucleolar RNA-associated protein 16,U3 snoRNA-associated protein 16 | 
| 35 | IA (NF)  | 40S ribosomal protein S13 | polymer | 151 | 17059.9 | 1 | UniProt (P05756) | Saccharomyces cerevisiae S288C | S27a,Small ribosomal subunit protein uS15,YS15 | 
| 36 | JA (NG)  | 40S ribosomal protein S14-A | polymer | 137 | 14562.7 | 1 | UniProt (P06367) | Saccharomyces cerevisiae S288C | RP59A,Small ribosomal subunit protein uS11-A | 
| 37 | KA (NH)  | U3 small nucleolar RNA-associated protein 22 | polymer | 1237 | 140660.1 | 1 | UniProt (P53254) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 22,U three protein 22 | 
| 38 | LA (NI)  | Ribosomal RNA-processing protein 7 | polymer | 297 | 34526.4 | 1 | UniProt (P25368) | Saccharomyces cerevisiae S288C | |
| 39 | MA (NL)  | Dimethyladenosine transferase | polymer | 318 | 36003.8 | 1 | UniProt (P41819) | Saccharomyces cerevisiae S288C | 18S rRNA (adenine(1779)-N(6)/adenine(1780)-N(6))-dimethyltransferase,18S rRNA dimethylase,S-adenosylmethionine-6-N',N'-adenosyl(rRNA) dimethyltransferase | 
| 40 | NA (NM)  | Small ribosomal subunit protein eS1A | polymer | 255 | 28798.5 | 1 | UniProt (P33442) | Saccharomyces cerevisiae S288C | 40S ribosomal protein S1-A,RP10A | 
| 41 | OA (NP)  | 40S ribosomal protein S19-A | polymer | 144 | 15942.1 | 1 | UniProt (P07280) | Saccharomyces cerevisiae S288C | RP55A,S16a,Small ribosomal subunit protein eS19-A,YP45,YS16A | 
| 42 | PA (NQ)  | 40S ribosomal protein S27-A | polymer | 82 | 8893.4 | 1 | UniProt (P35997) | Saccharomyces cerevisiae S288C | RP61,Small ribosomal subunit protein eS27-A,YS20 | 
| 43 | QA (NS)  | Probable ATP-dependent RNA helicase DHR1 | polymer | 1267 | 145171.4 | 1 | UniProt (Q04217) | Saccharomyces cerevisiae S288C | DEAH box RNA helicase DHR1,Extracellular mutant protein 16 | 
| 44 | RA (NV)  | Exosome complex exonuclease RRP6 | polymer | 733 | 84160.6 | 1 | UniProt (Q12149) | Saccharomyces cerevisiae S288C | Rrp6p,Ribosomal RNA-processing protein 6 | 
| 45 | SA (OA)  | rRNA biogenesis protein RRP5 | polymer | 1729 | 193411.4 | 1 | UniProt (Q05022) | Saccharomyces cerevisiae S288C | Ribosomal RNA-processing protein 5,U3 small nucleolar RNA-associated protein RRP5,U3 snoRNA-associated protein RRP5 | 
| 46 | TA (OH)  | 40S ribosomal protein S12 | polymer | 143 | 15488.6 | 1 | UniProt (P48589) | Saccharomyces cerevisiae S288C | |
| 47 | UA (OU)  | Ubiquitin-40S ribosomal protein S31 | polymer | 152 | 17254.2 | 1 | UniProt (P05759) | Saccharomyces cerevisiae S288C | |
| 48 | VA (SA)  | Nucleolar protein 56 | polymer | 504 | 56961.2 | 1 | UniProt (Q12460) | Saccharomyces cerevisiae S288C | Ribosome biosynthesis protein SIK1,Suppressor of I kappa b protein 1 | 
| 49 | WA (SB)  | Nucleolar protein 58 | polymer | 511 | 57060.3 | 1 | UniProt (Q12499) | Saccharomyces cerevisiae S288C | Nucleolar protein 5 | 
| 50 | XA, YA (SC, SD)  | rRNA 2'-O-methyltransferase fibrillarin | polymer | 327 | 34525.4 | 2 | UniProt (P15646) | Saccharomyces cerevisiae S288C | Histone-glutamine methyltransferase,U3 small nucleolar RNA-associated protein NOP1,U3 snoRNA-associated protein NOP1 | 
| 51 | AB, ZA (SE, SF)  | 13 kDa ribonucleoprotein-associated protein | polymer | 126 | 13582.9 | 2 | UniProt (P39990) | Saccharomyces cerevisiae S288C | Small nuclear ribonucleoprotein-associated protein 1 | 
| 52 | BB (SG)  | Ribosomal RNA-processing protein 9 | polymer | 573 | 65147.0 | 1 | UniProt (Q06506) | Saccharomyces cerevisiae S288C | |
| 53 | CB (SH)  | RNA 3'-terminal phosphate cyclase-like protein | polymer | 367 | 40220.6 | 1 | UniProt (Q08096) | Saccharomyces cerevisiae S288C | |
| 54 | DB (SI)  | Ribosome biogenesis protein BMS1 | polymer | 1183 | 135792.3 | 1 | UniProt (Q08965) | Saccharomyces cerevisiae S288C | |
| 55 | EB, FB (SJ, SK)  | Ribosomal RNA small subunit methyltransferase NEP1 | polymer | 252 | 27936.5 | 2 | UniProt (Q06287) | Saccharomyces cerevisiae S288C | 18S rRNA (pseudouridine(1189)-N1)-methyltransferase,18S rRNA Psi1189 methyltransferase,Essential for mitotic growth protein 1,Nucleolar essential protein 1 | 
| 56 | GB (SL)  | rRNA-processing protein FCF1 | polymer | 189 | 21650.7 | 1 | UniProt (Q05498) | Saccharomyces cerevisiae S288C | FAF1-copurifying factor 1 | 
| 57 | HB (SM)  | U3 small nucleolar ribonucleoprotein protein IMP4 | polymer | 290 | 33536.2 | 1 | UniProt (P53941) | Saccharomyces cerevisiae S288C | U3 snoRNP protein IMP4,Interacting with MPP10 protein 4 | 
| 58 | IB (SP)  | U3 small nucleolar RNA-associated protein 20 | polymer | 2493 | 287915.5 | 1 | UniProt (P35194) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 20,U three protein 20 | 
| 59 | JB (SQ)  | rRNA-processing protein FCF2 | polymer | 217 | 25689.2 | 1 | UniProt (Q12035) | Saccharomyces cerevisiae S288C | FAF1 copurifying factor 2 | 
| 60 | KB (SR)  | 40S ribosomal protein S23-A | polymer | 145 | 16073.9 | 1 | UniProt (P0CX29) | Saccharomyces cerevisiae S288C | RP37,S28,YS14 | 
| 61 | LB (SS)  | U3 small nucleolar RNA-associated protein 14 | polymer | 899 | 103269.7 | 1 | UniProt (Q04500) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 14,U three protein 14 | 
| 62 | MB (ST)  | Nucleolar complex protein 14 | polymer | 810 | 94463.2 | 1 | UniProt (Q99207) | Saccharomyces cerevisiae S288C | U three protein 2,U3 small nucleolar RNA-associated protein 2,U3 snoRNA-associated protein 2 | 
| 63 | NB (SU)  | Nucleolar complex protein 4 | polymer | 552 | 63707.8 | 1 | UniProt (Q06512) | Saccharomyces cerevisiae S288C | U three protein 19,U3 small nucleolar RNA-associated protein 19,U3 snoRNA-associated protein 19 | 
| 64 | OB (SV)  | Regulator of rDNA transcription protein 14 | polymer | 206 | 23898.3 | 1 | UniProt (P40470) | Saccharomyces cerevisiae S288C | |
| 65 | PB (SW)  | Pre-rRNA-processing protein PNO1 | polymer | 274 | 30380.6 | 1 | UniProt (Q99216) | Saccharomyces cerevisiae S288C | Partner of NOB1,Ribosomal RNA-processing protein 20 | 
| 66 | QB (SX)  | Unassigned peptides | polymer | 30 | 2672.3 | 1 | Saccharomyces cerevisiae S288C (Baker's yeast) | ||
| 67 | RB (SY)  | U3 small nucleolar RNA-associated protein 11 | polymer | 250 | 29806.3 | 1 | UniProt (P34247) | Saccharomyces cerevisiae S288C | U3 snoRNA-associated protein 11,U three protein 11 | 
| 68 | SB (SZ)  | Essential nuclear protein 1 | polymer | 483 | 55207.4 | 1 | UniProt (P38333) | Saccharomyces cerevisiae S288C | |
| 69 | AC, AD, BC, BD, CC... (L1, NH, NS, SI)  | MAGNESIUM ION | non-polymer | 24.3 | 39 | Chemie (MG) | |||
| 70 | DD (NH)  | ADENOSINE-5'-TRIPHOSPHATE | non-polymer | 507.2 | 1 | Chemie (ATP) | |||
| 71 | FD, ID, LD (NQ, OU, SL)  | ZINC ION | non-polymer | 65.4 | 3 | Chemie (ZN) | |||
| 72 | GD (NS)  | ADENOSINE-5'-DIPHOSPHATE | non-polymer | 427.2 | 1 | Chemie (ADP) | |||
| 73 | JD (SI)  | GUANOSINE-5'-TRIPHOSPHATE | non-polymer | 523.2 | 1 | Chemie (GTP) | 
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 71 | 
| Total formula weight | 4691090.6 | |
| Non-Polymers* | Number of molecules | 45 | 
| Total formula weight | 2601.7 | |
| All* | Total formula weight | 4693692.3 | 






