BLASTP 2.2.26 [Sep-21-2011]
Reference: Altschul, Stephen F., Thomas L. Madden, Alejandro A. Schaffer,
Jinghui Zhang, Zheng Zhang, Webb Miller, and David J. Lipman (1997),
"Gapped BLAST and PSI-BLAST: a new generation of protein database search
programs", Nucleic Acids Res. 25:3389-3402.
Reference for compositional score matrix adjustment: Altschul, Stephen F.,
John C. Wootton, E. Michael Gertz, Richa Agarwala, Aleksandr Morgulis,
Alejandro A. Schaffer, and Yi-Kuo Yu (2005) "Protein database searches
using compositionally adjusted substitution matrices", FEBS J. 272:5101-5109.
Query= 008283
(571 letters)
Database: pdbaa
62,578 sequences; 14,973,337 total letters
Searching..................................................done
>pdb|1TGZ|A Chain A, Structure Of Human Senp2 In Complex With Sumo-1
pdb|1TH0|A Chain A, Structure Of Human Senp2
pdb|1TH0|B Chain B, Structure Of Human Senp2
Length = 226
Score = 78.2 bits (191), Expect = 1e-14, Method: Compositional matrix adjust.
Identities = 65/219 (29%), Positives = 101/219 (46%), Gaps = 41/219 (18%)
Query: 316 VEICYTDINHLAPAAYLTSPIMNFYIRYL----QLQASPTNRAIRDCHFFNTYFYSKLKE 371
+ I DI L +L ++NFY+ L + Q P H F+T+FY KLK
Sbjct: 32 LRITRGDIQTLKNYHWLNDEVINFYMNLLVERNKKQGYPA------LHVFSTFFYPKLKS 85
Query: 372 AVSHKGGDKDSFFIKFRRWWKGVNIFQKSYVLIPIHEDVHWSLVIICIPDKEDESGPIIL 431
GG + +RW KGVN+F++ +L+PIH VHWSLV+I D +
Sbjct: 86 -----GG-----YQAVKRWTKGVNLFEQEIILVPIHRKVHWSLVVI------DLRKKCLK 129
Query: 432 HLDSL--KLHCSLSIFSNIRSFLKEEWNYLKQEVSPSDLPIAERIWQHLPRRIDDRIIPV 489
+LDS+ K H I + +L++E + SDL + E W H + + +
Sbjct: 130 YLDSMGQKGH---RICEILLQYLQDE----SKTKRNSDLNLLE--WTHHSMKPHE----I 176
Query: 490 PQQKNDYDCGLFVLFFMERFMEEAPERLKKKDLAMFGKR 528
PQQ N DCG+F + + + P + + +F K+
Sbjct: 177 PQQLNGSDCGMFTCKYADYISRDKPITFTQHQMPLFRKK 215
>pdb|2IO0|A Chain A, Crystal Structure Of Human Senp2 In Complex With Presumo-2
pdb|2IO1|A Chain A, Crystal Structure Of Human Senp2 In Complex With Presumo-3
pdb|2IO1|C Chain C, Crystal Structure Of Human Senp2 In Complex With Presumo-3
pdb|2IO1|E Chain E, Crystal Structure Of Human Senp2 In Complex With Presumo-3
pdb|2IO2|A Chain A, Crystal Structure Of Human Senp2 In Complex With
Rangap1-sumo-1
pdb|2IO3|A Chain A, Crystal Structure Of Human Senp2 In Complex With Rangap1-
Sumo-2
Length = 232
Score = 74.7 bits (182), Expect = 1e-13, Method: Compositional matrix adjust.
Identities = 64/219 (29%), Positives = 101/219 (46%), Gaps = 41/219 (18%)
Query: 316 VEICYTDINHLAPAAYLTSPIMNFYIRYL----QLQASPTNRAIRDCHFFNTYFYSKLKE 371
+ I DI L +L ++NFY+ L + Q P H F+T+FY KLK
Sbjct: 38 LRITRGDIQTLKNYHWLNDEVINFYMNLLVERNKKQGYPA------LHVFSTFFYPKLKS 91
Query: 372 AVSHKGGDKDSFFIKFRRWWKGVNIFQKSYVLIPIHEDVHWSLVIICIPDKEDESGPIIL 431
GG + +RW KGVN+F++ +L+PIH VHWSLV+I + K +
Sbjct: 92 -----GG-----YQAVKRWTKGVNLFEQEIILVPIHRKVHWSLVVIDLRKK------CLK 135
Query: 432 HLDSL--KLHCSLSIFSNIRSFLKEEWNYLKQEVSPSDLPIAERIWQHLPRRIDDRIIPV 489
+LDS+ K H I + +L++E + SDL + E W H + + +
Sbjct: 136 YLDSMGQKGHRICEI---LLQYLQDE----SKTKRNSDLNLLE--WTHHSMKPHE----I 182
Query: 490 PQQKNDYDCGLFVLFFMERFMEEAPERLKKKDLAMFGKR 528
PQQ N D G+F + + + P + + +F K+
Sbjct: 183 PQQLNGSDSGMFTCKYADYISRDKPITFTQHQMPLFRKK 221
>pdb|2XPH|A Chain A, Crystal Structure Of Human Senp1 With The Bound Cobalt
pdb|2XPH|B Chain B, Crystal Structure Of Human Senp1 With The Bound Cobalt
Length = 238
Score = 70.1 bits (170), Expect = 3e-12, Method: Compositional matrix adjust.
Identities = 57/214 (26%), Positives = 93/214 (43%), Gaps = 31/214 (14%)
Query: 316 VEICYTDINHLAPAAYLTSPIMNFYIRYLQLQASPTNRAIRDCHFFNTYFYSKLKEAVSH 375
+ I DI L +L I+NFY+ L ++ + + H FNT+F++KLK A
Sbjct: 44 LTITRKDIQTLNHLNWLNDEIINFYMNMLMERSKE--KGLPSVHAFNTFFFTKLKTAG-- 99
Query: 376 KGGDKDSFFIKFRRWWKGVNIFQKSYVLIPIHEDVHWSLVIICIPDKEDESGPIILHLDS 435
+ +RW K V++F +L+PIH VHW L ++ K I + DS
Sbjct: 100 --------YQAVKRWTKKVDVFSVDILLVPIHLGVHWCLAVVDFRKKN------ITYYDS 145
Query: 436 LKLHCSLSIFSNIRSFLKEEWNYLKQE-VSPSDLPIAERIWQHLPRRIDDRIIPVPQQKN 494
+ I + L + YLKQE + WQ ++ + +PQQ N
Sbjct: 146 MG-----GINNEACRILLQ---YLKQESIDKKRKEFDTNGWQLFSKKSQE----IPQQMN 193
Query: 495 DYDCGLFVLFFMERFMEEAPERLKKKDLAMFGKR 528
DCG+F + + ++ P ++ + F KR
Sbjct: 194 GSDCGMFACKYADCITKDRPINFTQQHMPYFRKR 227
>pdb|2XRE|A Chain A, Detection Of Cobalt In Previously Unassigned Human Senp1
Structure
pdb|2XRE|B Chain B, Detection Of Cobalt In Previously Unassigned Human Senp1
Structure
Length = 230
Score = 68.9 bits (167), Expect = 6e-12, Method: Compositional matrix adjust.
Identities = 57/214 (26%), Positives = 93/214 (43%), Gaps = 31/214 (14%)
Query: 316 VEICYTDINHLAPAAYLTSPIMNFYIRYLQLQASPTNRAIRDCHFFNTYFYSKLKEAVSH 375
+ I DI L +L I+NFY+ L ++ + + H FNT+F++KLK A
Sbjct: 36 LTITRKDIQTLNHLNWLNDEIINFYMNMLMERSKE--KGLPSVHAFNTFFFTKLKTAG-- 91
Query: 376 KGGDKDSFFIKFRRWWKGVNIFQKSYVLIPIHEDVHWSLVIICIPDKEDESGPIILHLDS 435
+ +RW K V++F +L+PIH VHW L ++ K I + DS
Sbjct: 92 --------YQAVKRWTKKVDVFSVDILLVPIHLGVHWCLAVVDFRKKN------ITYYDS 137
Query: 436 LKLHCSLSIFSNIRSFLKEEWNYLKQE-VSPSDLPIAERIWQHLPRRIDDRIIPVPQQKN 494
+ I + L + YLKQE + WQ ++ + +PQQ N
Sbjct: 138 MG-----GINNEACRILLQ---YLKQESIDKKRKEFDTNGWQLFSKKSQE----IPQQMN 185
Query: 495 DYDCGLFVLFFMERFMEEAPERLKKKDLAMFGKR 528
DCG+F + + ++ P ++ + F KR
Sbjct: 186 GSDCGMFACKYADCITKDRPINFTQQHMPYFRKR 219
>pdb|3EAY|A Chain A, Crystal Structure Of The Human Senp7 Catalytic Domain
Length = 323
Score = 68.9 bits (167), Expect = 8e-12, Method: Compositional matrix adjust.
Identities = 34/127 (26%), Positives = 63/127 (49%), Gaps = 7/127 (5%)
Query: 300 MIDAKIYYPSRVDPESVEICYTDINHLAPAAYLTSPIMNFYIRYLQLQASPTNRAIRDCH 359
++ I YP + + D+ L +L I++FY++YL L+ + ++ + H
Sbjct: 17 LVQKLIVYPPPPTKGGLGVTNEDLECLEEGEFLNDVIIDFYLKYLILEKA-SDELVERSH 75
Query: 360 FFNTYFYSKLKEAVSHKGGDKDSFFIKFRR------WWKGVNIFQKSYVLIPIHEDVHWS 413
F+++FY L ++ D + + RR W + +NIF K Y+ +P++E HW
Sbjct: 76 IFSSFFYKCLTRKENNLTEDNPNLSMAQRRHKRVRTWTRHINIFNKDYIFVPVNESSHWY 135
Query: 414 LVIICIP 420
L +IC P
Sbjct: 136 LAVICFP 142
Score = 40.8 bits (94), Expect = 0.002, Method: Compositional matrix adjust.
Identities = 35/122 (28%), Positives = 54/122 (44%), Gaps = 16/122 (13%)
Query: 428 PIILHLDSLKLHCSLSIFSNIRSFLKEEWNY-LKQEVSPSDLPIAERIWQHLPRRIDDRI 486
P IL LDSLK + N+R +L+ EW LK S + D
Sbjct: 206 PCILILDSLKAASVQNTVQNLREYLEVEWEVKLKTHRQFSKTNMV------------DLC 253
Query: 487 IPVPQQKNDYDCGLFVLFFMERFMEEAPERLKKKDLAMFGKRWFRPEEASGLRIKIRNLL 546
VP+Q N DCG+++L ++E F ++ + +L + ++WF R IR L+
Sbjct: 254 PKVPKQDNSSDCGVYLLQYVESFFKDP---IVNFELPIHLEKWFPRHVIKTKREDIRELI 310
Query: 547 KK 548
K
Sbjct: 311 LK 312
>pdb|2IYC|A Chain A, Senp1 Native Structure
pdb|2IYC|B Chain B, Senp1 Native Structure
pdb|2IYD|A Chain A, Senp1 Covalent Complex With Sumo-2
Length = 226
Score = 68.6 bits (166), Expect = 9e-12, Method: Compositional matrix adjust.
Identities = 57/214 (26%), Positives = 93/214 (43%), Gaps = 31/214 (14%)
Query: 316 VEICYTDINHLAPAAYLTSPIMNFYIRYLQLQASPTNRAIRDCHFFNTYFYSKLKEAVSH 375
+ I DI L +L I+NFY+ L ++ + + H FNT+F++KLK A
Sbjct: 32 LTITRKDIQTLNHLNWLNDEIINFYMNMLMERSKE--KGLPSVHAFNTFFFTKLKTAG-- 87
Query: 376 KGGDKDSFFIKFRRWWKGVNIFQKSYVLIPIHEDVHWSLVIICIPDKEDESGPIILHLDS 435
+ +RW K V++F +L+PIH VHW L ++ K I + DS
Sbjct: 88 --------YQAVKRWTKKVDVFSVDILLVPIHLGVHWCLAVVDFRKKN------ITYYDS 133
Query: 436 LKLHCSLSIFSNIRSFLKEEWNYLKQE-VSPSDLPIAERIWQHLPRRIDDRIIPVPQQKN 494
+ I + L + YLKQE + WQ ++ + +PQQ N
Sbjct: 134 MG-----GINNEACRILLQ---YLKQESIDKKRKEFDTNGWQLFSKKSQE----IPQQMN 181
Query: 495 DYDCGLFVLFFMERFMEEAPERLKKKDLAMFGKR 528
DCG+F + + ++ P ++ + F KR
Sbjct: 182 GSDCGMFACKYADCITKDRPINFTQQHMPYFRKR 215
>pdb|2CKG|A Chain A, The Structure Of Senp1 Sumo-2 Co-Complex Suggests A
Structural Basis For Discrimination Between Sumo
Paralogues During Processing
pdb|2CKG|B Chain B, The Structure Of Senp1 Sumo-2 Co-Complex Suggests A
Structural Basis For Discrimination Between Sumo
Paralogues During Processing
pdb|2CKH|A Chain A, Senp1-sumo2 Complex
Length = 225
Score = 67.8 bits (164), Expect = 2e-11, Method: Compositional matrix adjust.
Identities = 57/214 (26%), Positives = 92/214 (42%), Gaps = 32/214 (14%)
Query: 316 VEICYTDINHLAPAAYLTSPIMNFYIRYLQLQASPTNRAIRDCHFFNTYFYSKLKEAVSH 375
+ I DI L +L I+NFY+ L ++ + + H FNT+F++KLK A
Sbjct: 32 LTITRKDIQTLNHLNWLNDEIINFYMNMLMERSKE--KGLPSVHAFNTFFFTKLKTAG-- 87
Query: 376 KGGDKDSFFIKFRRWWKGVNIFQKSYVLIPIHEDVHWSLVIICIPDKEDESGPIILHLDS 435
+ +RW K V++F +L+PIH VHW L ++ K I + DS
Sbjct: 88 --------YQAVKRWTKKVDVFSVDILLVPIHLGVHWCLAVVDFRKKN------ITYYDS 133
Query: 436 LKLHCSLSIFSNIRSFLKEEWNYLKQE-VSPSDLPIAERIWQHLPRRIDDRIIPVPQQKN 494
+ I + L + YLKQE + WQ ++ +PQQ N
Sbjct: 134 MG-----GINNEACRILLQ---YLKQESIDKKRKEFDTNGWQLFSKKSQ-----IPQQMN 180
Query: 495 DYDCGLFVLFFMERFMEEAPERLKKKDLAMFGKR 528
DCG+F + + ++ P ++ + F KR
Sbjct: 181 GSDCGMFACKYADCITKDRPINFTQQHMPYFRKR 214
>pdb|2IY0|A Chain A, Senp1 (Mutant) Sumo1 Rangap
pdb|2IY1|A Chain A, Senp1 (Mutant) Full Length Sumo1
pdb|2IY1|C Chain C, Senp1 (Mutant) Full Length Sumo1
Length = 226
Score = 65.1 bits (157), Expect = 1e-10, Method: Compositional matrix adjust.
Identities = 55/218 (25%), Positives = 91/218 (41%), Gaps = 39/218 (17%)
Query: 316 VEICYTDINHLAPAAYLTSPIMNFYIRYLQLQASPTNRAIRDCHFFNTYFYSKLKEAVSH 375
+ I DI L +L I+NFY+ L ++ + + H FNT+F++KLK A
Sbjct: 32 LTITRKDIQTLNHLNWLNDEIINFYMNMLMERSKE--KGLPSVHAFNTFFFTKLKTAG-- 87
Query: 376 KGGDKDSFFIKFRRWWKGVNIFQKSYVLIPIHEDVHWSLVIICIPDKEDESGPIILHLDS 435
+ +RW K V++F +L+PIH VHW L ++ K I + DS
Sbjct: 88 --------YQAVKRWTKKVDVFSVDILLVPIHLGVHWCLAVVDFRKKN------ITYYDS 133
Query: 436 L----KLHCSLSIFSNIRSFLKEEWNYLKQE-VSPSDLPIAERIWQHLPRRIDDRIIPVP 490
+ C + + YLKQE + WQ ++ + +P
Sbjct: 134 MGGINNEACRILL------------QYLKQESIDKKRKEFDTNGWQLFSKKSQE----IP 177
Query: 491 QQKNDYDCGLFVLFFMERFMEEAPERLKKKDLAMFGKR 528
QQ N D G+F + + ++ P ++ + F KR
Sbjct: 178 QQMNGSDAGMFACKYADCITKDRPINFTQQHMPYFRKR 215
>pdb|2G4D|A Chain A, Crystal Structure Of Human Senp1 Mutant (C603s) In Complex
With Sumo-1
pdb|2G4D|C Chain C, Crystal Structure Of Human Senp1 Mutant (C603s) In Complex
With Sumo-1
Length = 205
Score = 63.5 bits (153), Expect = 3e-10, Method: Compositional matrix adjust.
Identities = 56/214 (26%), Positives = 92/214 (42%), Gaps = 31/214 (14%)
Query: 316 VEICYTDINHLAPAAYLTSPIMNFYIRYLQLQASPTNRAIRDCHFFNTYFYSKLKEAVSH 375
+ I DI L +L I+NFY+ L ++ + + H FNT+F++KLK A
Sbjct: 11 LTITRKDIQTLNHLNWLNDEIINFYMNMLMERSKE--KGLPSVHAFNTFFFTKLKTAG-- 66
Query: 376 KGGDKDSFFIKFRRWWKGVNIFQKSYVLIPIHEDVHWSLVIICIPDKEDESGPIILHLDS 435
+ +RW K V++F +L+PIH VHW L ++ K I + DS
Sbjct: 67 --------YQAVKRWTKKVDVFSVDILLVPIHLGVHWCLAVVDFRKKN------ITYYDS 112
Query: 436 LKLHCSLSIFSNIRSFLKEEWNYLKQE-VSPSDLPIAERIWQHLPRRIDDRIIPVPQQKN 494
+ I + L + YLKQE + WQ ++ + +PQQ N
Sbjct: 113 MG-----GINNEACRILLQ---YLKQESIDKKRKEFDTNGWQLFSKKSQE----IPQQMN 160
Query: 495 DYDCGLFVLFFMERFMEEAPERLKKKDLAMFGKR 528
D G+F + + ++ P ++ + F KR
Sbjct: 161 GSDSGMFACKYADCITKDRPINFTQQHMPYFRKR 194
>pdb|1EUV|A Chain A, X-Ray Structure Of The C-Terminal Ulp1 Protease Domain In
Complex With Smt3, The Yeast Ortholog Of Sumo
Length = 221
Score = 55.1 bits (131), Expect = 9e-08, Method: Compositional matrix adjust.
Identities = 54/214 (25%), Positives = 92/214 (42%), Gaps = 47/214 (21%)
Query: 314 ESVEICYTDINHLAPAAYLTSPIMNFYIRYLQLQASPTNRAIRDCHFFNTYFYSKLKEAV 373
+++EI D LAP +L I+ F+++Y++ +++P A FN++FY+ L E
Sbjct: 31 DNIEITVRDFKTLAPRRWLNDTIIEFFMKYIE-KSTPNTVA------FNSFFYTNLSER- 82
Query: 374 SHKGGDKDSFFIKFRRWW--KGVNIFQKSYVLIPIH-EDVHWSLVIICIPDKEDESGPII 430
++G RRW K I + + PI+ HW+L II + K I
Sbjct: 83 GYQG---------VRRWMKRKKTQIDKLDKIFTPINLNQSHWALGIIDLKKKT------I 127
Query: 431 LHLDSLK---LHCSLSIFSNIRSFLKEEWNYLKQEVSPSDLPIAERIWQHLPRRIDDRII 487
++DSL S +I ++++ ++ EE + D + +
Sbjct: 128 GYVDSLSNGPNAMSFAILTDLQKYVMEE----SKHTIGEDFDLIH--------------L 169
Query: 488 PVPQQKNDYDCGLFVLFFMERFMEEAPERLKKKD 521
PQQ N YDCG++V +AP KD
Sbjct: 170 DCPQQPNGYDCGIYVCMNTLYGSADAPLDFDYKD 203
>pdb|2HKP|A Chain A, Sumo Protease Ulp1 With The Catalytic Cysteine Oxidized To
A Sulfenic Acid
pdb|2HL8|A Chain A, Sumo Protease Ulp1 With The Catalytic Cysteine Oxidized To
A Sulfinic Acid
pdb|2HL9|A Chain A, Sumo Protease Ulp1 With The Catalytic Cysteine Oxidized To
A Sulfonic Acid
Length = 221
Score = 51.2 bits (121), Expect = 2e-06, Method: Compositional matrix adjust.
Identities = 53/214 (24%), Positives = 91/214 (42%), Gaps = 47/214 (21%)
Query: 314 ESVEICYTDINHLAPAAYLTSPIMNFYIRYLQLQASPTNRAIRDCHFFNTYFYSKLKEAV 373
+++EI D LAP +L I+ F+++Y++ +++P A FN++FY+ L E
Sbjct: 31 DNIEITVRDFKTLAPRRWLNDTIIEFFMKYIE-KSTPNTVA------FNSFFYTNLSER- 82
Query: 374 SHKGGDKDSFFIKFRRWW--KGVNIFQKSYVLIPIH-EDVHWSLVIICIPDKEDESGPII 430
++G RRW K I + + PI+ HW+L II + K I
Sbjct: 83 GYQG---------VRRWMKRKKTQIDKLDKIFTPINLNQSHWALGIIDLKKKT------I 127
Query: 431 LHLDSLK---LHCSLSIFSNIRSFLKEEWNYLKQEVSPSDLPIAERIWQHLPRRIDDRII 487
++DSL S +I ++++ ++ EE + D + +
Sbjct: 128 GYVDSLSNGPNAMSFAILTDLQKYVMEE----SKHTIGEDFDLIH--------------L 169
Query: 488 PVPQQKNDYDCGLFVLFFMERFMEEAPERLKKKD 521
PQQ N YD G++V +AP KD
Sbjct: 170 DCPQQPNGYDXGIYVCMNTLYGSADAPLDFDYKD 203
>pdb|3MT0|A Chain A, The Crystal Structure Of A Functionally Unknown Protein
Pa17 Pseudomonas Aeruginosa Pao1
Length = 290
Score = 29.6 bits (65), Expect = 5.2, Method: Compositional matrix adjust.
Identities = 36/115 (31%), Positives = 46/115 (40%), Gaps = 22/115 (19%)
Query: 32 LIVKKSGPPTPAQKSVPMSDDPGSGEELDRQIPDQELGVRIARMKDTYSKVRHCLPDKGK 91
LI+K+ P P +K++ DD +L R P L + AR P G
Sbjct: 92 LIIKQHFPDNPLKKAILTPDD----WKLLRFAPCPVLXTKTAR------------PWTGG 135
Query: 92 KILATVTRLEKECERRRL-AGAVPVCLDIDGCDKLTQSPSSDCFTQRTPSPQIQS 145
KILA V + E R L AG + DI G K T S PSP + S
Sbjct: 136 KILAAVDVGNNDGEHRSLHAGIISHAYDIAGLAKATLHVIS-----AHPSPXLSS 185
>pdb|1XT9|A Chain A, Crystal Structure Of Den1 In Complex With Nedd8
Length = 212
Score = 29.3 bits (64), Expect = 6.0, Method: Compositional matrix adjust.
Identities = 13/37 (35%), Positives = 21/37 (56%), Gaps = 3/37 (8%)
Query: 470 IAERIWQHLPRRIDDRII---PVPQQKNDYDCGLFVL 503
+AE++ L R+ D P Q+N YDCG++V+
Sbjct: 132 VAEKLEAFLGRKGDKLAFVEEKAPAQQNSYDCGMYVI 168
Database: pdbaa
Posted date: Mar 3, 2013 10:34 PM
Number of letters in database: 14,973,337
Number of sequences in database: 62,578
Lambda K H
0.317 0.134 0.404
Lambda K H
0.267 0.0410 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Hits to DB: 17,637,763
Number of Sequences: 62578
Number of extensions: 774634
Number of successful extensions: 1447
Number of sequences better than 100.0: 14
Number of HSP's better than 100.0 without gapping: 9
Number of HSP's successfully gapped in prelim test: 5
Number of HSP's that attempted gapping in prelim test: 1417
Number of HSP's gapped (non-prelim): 15
length of query: 571
length of database: 14,973,337
effective HSP length: 104
effective length of query: 467
effective length of database: 8,465,225
effective search space: 3953260075
effective search space used: 3953260075
T: 11
A: 40
X1: 16 ( 7.3 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.7 bits)
S2: 54 (25.4 bits)