Assignment 9
1. Make a protein structure model of MLH1 based on the protein you find in assignment 7. Show their pairwise alignment.

AlignMaster output
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Length of target sequence: 756 residues

Reading user-defined template list

Extracting template sequences

Running pair-wise alignments with target sequence
Sequence identity of templates with target:

1BKNA.pdb: 46.05 % identity
1BKNB.pdb: 40.9 % identity

Looking for template groups
Global alignment overview:

Taget Sequence: |==================================================|
1BKNA.pdb | -------
1BKNB.pdb | -------

AlignMaster found 1 regions to model separately:
1: Using template(s) 1BKNA.pdb 1BKNB.pdb

1BKNA
CRYSTAL STRUCTURE OF AN N-TERMINAL 40KD FRAGMENT OF E. COL
DNA MISMATCH REPAIR PROTEIN MUTL
MOL_ID: 1;
MOLECULE: MUTL;
CHAIN: A, B;
FRAGMENT: N-TERMINAL 40KD FRAGMENT;
ENGINEERED: YES
MOL_ID: 1;
ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;
STRAIN: K-12;
PLASMID: PTX418;
GENE: MUTL;
EXPRESSION_SYSTEM: ESCHERICHIA COLI;
EXPRESSION_SYSTEM_STRAIN: HMS174 (LAMBDA DE3);
EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;
EXPRESSION_SYSTEM_PLASMID: PTX418;
EXPRESSION_SYSTEM_GENE: MUTL
W.YANG,C.BAN

Length = 272

Score = 124 bits (309), Expect = 1e-28
Identities = 81/287 (28%) Positives = 144/287 (49%) Gaps = 30/287 (10%)

Query: 25  IQRPANAIKEMIENCLDAKSTSIQVIVKEGGLKLIQIQDNGTGIRKEDLDIVCERFTTSK 84
RPA KE EN LDA T I GG KLI I DNG GI K L
Sbjct: 1 VERPASVVKELVENSLDAGATRIDIDIERGGAKLIRIRDNGCGIKKDELALAL------A 54
   
Query: 85  LQSFEDLASISTYGFRGEALASISHVAHVTITTKTADGKCAYRASYSDGKLKAPPKPCAG 144
S DL I GFRGEALASIS V T T TA A
Sbjct: 55 IASLDDLEAIISLGFRGEALASISSVSRLTLTSRTAEQQEAW------------------ 96
Query: 145 NQGTQITVEDLFYNIATRRKALKNPSEEYGKILEVVGRYSVHNAGISFSVKKQGETVADV 204
Q TV T L E I E R G V
Sbjct: 97 -QAYAVTVKPAAHPVGTTLEVLDTEKTEFNHIDEIIRRIALARFDVTINLSHNGKIVRQY 155
Query: 205 RTLPNASTVD-NIRSIFGNAVSRELIEIGCEDKTLAFKMNGYISNANYSVKKC--IFLLF 261
R P I G A I L G N I
Sbjct: 156 RAVPEGGQKERRLGAICGTAFLEQALAIEWQHGDLT--LRGWVADPNHTTPALAEIQYCY 213

Query: 262 INHRLVESTSLRKAIETVYAAYLPKNTHPFLYLSLEISPQNVDVNVH 308
N R AI L P L LEI P V VH
Sbjct: 214 VNGRMMRDRLINHAIRQACEDKLGADQQPAFVLYLEIDPHQVSRLVH 260 1BKNB
CRYSTAL STRUCTURE OF AN N-TERMINAL 40KD FRAGMENT OF E. COL
DNA MISMATCH REPAIR PROTEIN MUTL
MOL_ID: 1;
MOLECULE: MUTL;
CHAIN: A, B;
FRAGMENT: N-TERMINAL 40KD FRAGMENT;
ENGINEERED: YES
MOL_ID: 1;
ORGANISM_SCIENTIFIC: ESCHERICHIA COLI;
STRAIN: K-12;
PLASMID: PTX418;
GENE: MUTL;
EXPRESSION_SYSTEM: ESCHERICHIA COLI;
EXPRESSION_SYSTEM_STRAIN: HMS174 (LAMBDA DE3);
EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;
EXPRESSION_SYSTEM_PLASMID: PTX418;
EXPRESSION_SYSTEM_GENE: MUTL
W.YANG,C.BAN
Length = 271

Score = 118 bits (293), Expect = 8e-27
Identities = 81/282 (28%) Positives = 141/282 (49%) Gaps = 33/282 (11%)

Query: 25  IQRPANAIKEMIENCLDAKSTSIQVIVKEGGLKLIQIQDNGTGIRKEDLDIVCERFTTSK 84
RPA KE EN LDA T I GG KLI I DNG GI K L
Sbjct: 1 VERPASVVKELVENSLDAGATRIDIDIERGGAKLIRIRDNGCGIKKDELALALAE----- 55

Query: 85  LQSFEDLASISTYGFRGEALASISHVAHVTITTKTADGKCAYRASYSDGKLKAPPKPCAG 144
I GFRGEALASIS V T T TA A A KP A
Sbjct: 56 --------AIISLGFRGEALASISSVSRLTLTSRTAEQQEAWQA-----YMNVTVKPAAH 102
Query: 145 NQGTQITVEDLFYNIATRRKALKNPSEEYGKILEVVGRYSVHNAGISFSVKKQGETVADV 204
GT V DL L E I E R G V
Sbjct: 103 PVGTTLEVLDL----------LRTEKTEFNHIDEIIRRIALARFDVTINLSHNGKIVRQY 152 Query: 205 RTLPNASTVD-NIRSIFGNAVSRELIEIGCEDKTLAFKMNGYISNANYSVKKC--IFLLF 261
R P I G A I L G N I
Sbjct: 153 RAVPEGGQKERRLGAICGTAFLEQALAIEWQHGDLT--LRGWVADPNHTTPALAEIQYCY 210

Query: 262 INHRLVESTSLRKAIETVYAAYLPKNTHPFLYLSLEISPQNV 303
N R AI L P L LEI P V
Sbjct: 211 VNGRMMRDRLINHAIRQACEDKLGADQQPAFVLYLEIDPHQV 252
 

2. How large is the fragment of MLH1 possible to be modeled?

   336 residues

3. Show three rasmol pictures of your model of MLH1?

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