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Database: UniProt
Entry: P0ABU0
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Original site: P0ABU0 
ID   MENB_ECOLI              Reviewed;         285 AA.
AC   P0ABU0; P27290;
DT   25-OCT-2005, integrated into UniProtKB/Swiss-Prot.
DT   25-OCT-2005, sequence version 1.
DT   27-MAR-2024, entry version 138.
DE   RecName: Full=1,4-dihydroxy-2-naphthoyl-CoA synthase {ECO:0000255|HAMAP-Rule:MF_01934, ECO:0000303|PubMed:21830810};
DE            Short=DHNA-CoA synthase {ECO:0000255|HAMAP-Rule:MF_01934, ECO:0000303|PubMed:23658663};
DE            EC=4.1.3.36 {ECO:0000255|HAMAP-Rule:MF_01934, ECO:0000269|PubMed:20643650, ECO:0000269|PubMed:21830810, ECO:0000269|PubMed:22606952, ECO:0000269|PubMed:23658663};
GN   Name=menB {ECO:0000255|HAMAP-Rule:MF_01934};
GN   OrderedLocusNames=b2262, JW2257;
OS   Escherichia coli (strain K12).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=83333;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=K12;
RX   PubMed=1629162; DOI=10.1128/jb.174.15.5057-5062.1992;
RA   Sharma V., Suvarna K., Meganathan R., Hudspeth M.E.;
RT   "Menaquinone (vitamin K2) biosynthesis: nucleotide sequence and expression
RT   of the menB gene from Escherichia coli.";
RL   J. Bacteriol. 174:5057-5062(1992).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=K12 / W3110 / ATCC 27325 / DSM 5911;
RX   PubMed=9205837; DOI=10.1093/dnares/4.2.91;
RA   Yamamoto Y., Aiba H., Baba T., Hayashi K., Inada T., Isono K., Itoh T.,
RA   Kimura S., Kitagawa M., Makino K., Miki T., Mitsuhashi N., Mizobuchi K.,
RA   Mori H., Nakade S., Nakamura Y., Nashimoto H., Oshima T., Oyama S.,
RA   Saito N., Sampei G., Satoh Y., Sivasundaram S., Tagami H., Takahashi H.,
RA   Takeda J., Takemoto K., Uehara K., Wada C., Yamagata S., Horiuchi T.;
RT   "Construction of a contiguous 874-kb sequence of the Escherichia coli-K12
RT   genome corresponding to 50.0-68.8 min on the linkage map and analysis of
RT   its sequence features.";
RL   DNA Res. 4:91-113(1997).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=K12 / MG1655 / ATCC 47076;
RX   PubMed=9278503; DOI=10.1126/science.277.5331.1453;
RA   Blattner F.R., Plunkett G. III, Bloch C.A., Perna N.T., Burland V.,
RA   Riley M., Collado-Vides J., Glasner J.D., Rode C.K., Mayhew G.F.,
RA   Gregor J., Davis N.W., Kirkpatrick H.A., Goeden M.A., Rose D.J., Mau B.,
RA   Shao Y.;
RT   "The complete genome sequence of Escherichia coli K-12.";
RL   Science 277:1453-1462(1997).
RN   [4]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=K12 / W3110 / ATCC 27325 / DSM 5911;
RX   PubMed=16738553; DOI=10.1038/msb4100049;
RA   Hayashi K., Morooka N., Yamamoto Y., Fujita K., Isono K., Choi S.,
RA   Ohtsubo E., Baba T., Wanner B.L., Mori H., Horiuchi T.;
RT   "Highly accurate genome sequences of Escherichia coli K-12 strains MG1655
RT   and W3110.";
RL   Mol. Syst. Biol. 2:E1-E5(2006).
RN   [5]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-6.
RC   STRAIN=K12;
RA   Sharma V., Hudspeth M.E., Meganathan R.;
RL   Submitted (JUL-1994) to the EMBL/GenBank/DDBJ databases.
RN   [6]
RP   FUNCTION IN MENAQUINONE BIOSYNTHESIS.
RX   PubMed=1091286; DOI=10.1021/bi00673a029;
RA   Young I.G.;
RT   "Biosynthesis of bacterial menaquinones. Menaquinone mutants of Escherichia
RT   coli.";
RL   Biochemistry 14:399-406(1975).
RN   [7]
RP   FUNCTION AS A DHNA-COA SYNTHASE, CATALYTIC ACTIVITY, MUTAGENESIS OF
RP   GLN-154; GLY-156 AND TRP-184, COFACTOR, ACTIVITY REGULATION, AND SUBUNIT.
RX   PubMed=20643650; DOI=10.1074/jbc.m110.147702;
RA   Jiang M., Chen M., Guo Z.F., Guo Z.;
RT   "A bicarbonate cofactor modulates 1,4-dihydroxy-2-naphthoyl-coenzyme a
RT   synthase in menaquinone biosynthesis of Escherichia coli.";
RL   J. Biol. Chem. 285:30159-30169(2010).
RN   [8]
RP   X-RAY CRYSTALLOGRAPHY (1.95 ANGSTROMS) IN COMPLEX WITH THE SUBSTRATE ANALOG
RP   O-SUCCINYLBENZOYL-N-COENZYME A, CATALYTIC ACTIVITY, FUNCTION, SUBUNIT,
RP   BIOPHYSICOCHEMICAL PROPERTIES, AND MUTAGENESIS OF TYR-97 AND GLY-156.
RX   PubMed=21830810; DOI=10.1021/bi200877x;
RA   Li H.J., Li X., Liu N., Zhang H., Truglio J.J., Mishra S., Kisker C.,
RA   Garcia-Diaz M., Tonge P.J.;
RT   "Mechanism of the intramolecular Claisen condensation reaction catalyzed by
RT   MenB, a crotonase superfamily member.";
RL   Biochemistry 50:9532-9544(2011).
RN   [9]
RP   X-RAY CRYSTALLOGRAPHY (2.19 ANGSTROMS) IN COMPLEX WITH HYDROGENCARBONATE,
RP   CATALYTIC ACTIVITY, COFACTOR, AND SUBUNIT.
RX   PubMed=22606952; DOI=10.1021/bi300486j;
RA   Sun Y., Song H., Li J., Jiang M., Li Y., Zhou J., Guo Z.;
RT   "Active site binding and catalytic role of bicarbonate in 1,4-dihydroxy-2-
RT   naphthoyl coenzyme A synthases from vitamin K biosynthetic pathways.";
RL   Biochemistry 51:4580-4589(2012).
RN   [10]
RP   X-RAY CRYSTALLOGRAPHY (1.85 ANGSTROMS) IN COMPLEX WITH THE SUBSTRATE ANALOG
RP   1-HYDROXY-2-NAPHTHOYL-COA, FUNCTION, CATALYTIC ACTIVITY, COFACTOR, SUBUNIT,
RP   MUTAGENESIS OF LYS-89; ARG-91; ARG-267; PHE-270 AND LYS-273, AND
RP   BIOPHYSICOCHEMICAL PROPERTIES.
RX   PubMed=23658663; DOI=10.1371/journal.pone.0063095;
RA   Sun Y., Song H., Li J., Li Y., Jiang M., Zhou J., Guo Z.;
RT   "Structural basis of the induced-fit mechanism of 1,4-dihydroxy-2-naphthoyl
RT   coenzyme A synthase from the crotonase fold superfamily.";
RL   PLoS ONE 8:E63095-E63095(2013).
CC   -!- FUNCTION: Converts o-succinylbenzoyl-CoA (OSB-CoA) to 1,4-dihydroxy-2-
CC       naphthoyl-CoA (DHNA-CoA). {ECO:0000255|HAMAP-Rule:MF_01934,
CC       ECO:0000269|PubMed:1091286, ECO:0000269|PubMed:20643650,
CC       ECO:0000269|PubMed:21830810, ECO:0000269|PubMed:23658663}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2-succinylbenzoyl-CoA + H(+) = 1,4-dihydroxy-2-naphthoyl-CoA +
CC         H2O; Xref=Rhea:RHEA:26562, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:57364, ChEBI:CHEBI:58897; EC=4.1.3.36;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01934,
CC         ECO:0000269|PubMed:20643650, ECO:0000269|PubMed:21830810,
CC         ECO:0000269|PubMed:22606952, ECO:0000269|PubMed:23658663};
CC   -!- COFACTOR:
CC       Name=hydrogencarbonate; Xref=ChEBI:CHEBI:17544;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01934,
CC         ECO:0000269|PubMed:20643650, ECO:0000305|PubMed:22606952};
CC       Note=The hydrogencarbonate anion plays the same catalytic role (proton
CC       acceptor) as the side-chain carboxylate group of the essential 'Asp-
CC       185' found in actinobacteria, archaea, bacteroidetes, and
CC       deltaproteobacteria. {ECO:0000269|PubMed:20643650,
CC       ECO:0000305|PubMed:22606952};
CC   -!- ACTIVITY REGULATION: Inhibited by sulfite and nitrate.
CC       {ECO:0000269|PubMed:20643650}.
CC   -!- BIOPHYSICOCHEMICAL PROPERTIES:
CC       Kinetic parameters:
CC         KM=26 uM for o-succinylbenzoyl-CoA {ECO:0000269|PubMed:21830810};
CC         KM=2.8 uM for o-succinylbenzoyl-CoA {ECO:0000269|PubMed:23658663};
CC         Note=kcat is 620 sec(-1) with o-succinylbenzoyl-CoA as
CC         substrate(PubMed:21830810). kcat is 1.24 min(-1) with o-
CC         succinylbenzoyl-CoA as substrate (PubMed:23658663). All assays are
CC         performed at pH 7.0 at 25 degrees Celsius and in the presence of 20
CC         mM NaHCO(3). {ECO:0000269|PubMed:21830810,
CC         ECO:0000269|PubMed:23658663};
CC   -!- PATHWAY: Quinol/quinone metabolism; 1,4-dihydroxy-2-naphthoate
CC       biosynthesis; 1,4-dihydroxy-2-naphthoate from chorismate: step 6/7.
CC       {ECO:0000255|HAMAP-Rule:MF_01934}.
CC   -!- PATHWAY: Quinol/quinone metabolism; menaquinone biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_01934}.
CC   -!- SUBUNIT: Homohexamer. Dimer of a homotrimer.
CC       {ECO:0000269|PubMed:20643650, ECO:0000269|PubMed:21830810,
CC       ECO:0000269|PubMed:22606952, ECO:0000269|PubMed:23658663}.
CC   -!- INTERACTION:
CC       P0ABU0; P67910: hldD; NbExp=3; IntAct=EBI-554195, EBI-543760;
CC   -!- SIMILARITY: Belongs to the enoyl-CoA hydratase/isomerase family. MenB
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_01934}.
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DR   EMBL; M93421; AAA23682.1; -; Genomic_DNA.
DR   EMBL; U00096; AAC75322.1; -; Genomic_DNA.
DR   EMBL; AP009048; BAA16086.1; -; Genomic_DNA.
DR   EMBL; L35030; AAA24152.1; -; Genomic_DNA.
DR   PIR; A42714; D64997.
DR   RefSeq; NP_416765.1; NC_000913.3.
DR   RefSeq; WP_000639996.1; NZ_STEB01000008.1.
DR   PDB; 3T88; X-ray; 2.00 A; A/B/C/D/E/F=1-285.
DR   PDB; 3T89; X-ray; 1.95 A; A/B/C/D/E/F=1-285.
DR   PDB; 4ELS; X-ray; 2.30 A; A/B/C/D/E/F=1-285.
DR   PDB; 4ELW; X-ray; 2.55 A; A/B/C/D/E/F=1-285.
DR   PDB; 4ELX; X-ray; 2.19 A; A/B/C/D/E/F=1-285.
DR   PDB; 4I42; X-ray; 1.85 A; A/B/C/D/E/F/G/H/I/J/K/L=1-285.
DR   PDBsum; 3T88; -.
DR   PDBsum; 3T89; -.
DR   PDBsum; 4ELS; -.
DR   PDBsum; 4ELW; -.
DR   PDBsum; 4ELX; -.
DR   PDBsum; 4I42; -.
DR   AlphaFoldDB; P0ABU0; -.
DR   SMR; P0ABU0; -.
DR   BioGRID; 4260504; 18.
DR   BioGRID; 851088; 1.
DR   DIP; DIP-47854N; -.
DR   IntAct; P0ABU0; 6.
DR   STRING; 511145.b2262; -.
DR   jPOST; P0ABU0; -.
DR   PaxDb; 511145-b2262; -.
DR   EnsemblBacteria; AAC75322; AAC75322; b2262.
DR   GeneID; 75205687; -.
DR   GeneID; 946747; -.
DR   KEGG; ecj:JW2257; -.
DR   KEGG; eco:b2262; -.
DR   PATRIC; fig|511145.12.peg.2355; -.
DR   EchoBASE; EB1342; -.
DR   eggNOG; COG0447; Bacteria.
DR   HOGENOM; CLU_009834_7_7_6; -.
DR   InParanoid; P0ABU0; -.
DR   OMA; FCDARED; -.
DR   OrthoDB; 9807606at2; -.
DR   PhylomeDB; P0ABU0; -.
DR   BioCyc; EcoCyc:NAPHTHOATE-SYN-MONOMER; -.
DR   BioCyc; MetaCyc:NAPHTHOATE-SYN-MONOMER; -.
DR   UniPathway; UPA00079; -.
DR   UniPathway; UPA01057; UER00167.
DR   PRO; PR:P0ABU0; -.
DR   Proteomes; UP000000318; Chromosome.
DR   Proteomes; UP000000625; Chromosome.
DR   GO; GO:0005829; C:cytosol; IDA:EcoCyc.
DR   GO; GO:0008935; F:1,4-dihydroxy-2-naphthoyl-CoA synthase activity; IDA:EcoliWiki.
DR   GO; GO:0071890; F:bicarbonate binding; IDA:UniProtKB.
DR   GO; GO:0009234; P:menaquinone biosynthetic process; IMP:EcoCyc.
DR   CDD; cd06558; crotonase-like; 1.
DR   Gene3D; 1.10.12.10; Lyase 2-enoyl-coa Hydratase, Chain A, domain 2; 1.
DR   HAMAP; MF_01934; MenB; 1.
DR   InterPro; IPR029045; ClpP/crotonase-like_dom_sf.
DR   InterPro; IPR010198; DHNA-CoA_synthase_MenB.
DR   InterPro; IPR018376; Enoyl-CoA_hyd/isom_CS.
DR   InterPro; IPR001753; Enoyl-CoA_hydra/iso.
DR   InterPro; IPR014748; Enoyl-CoA_hydra_C.
DR   NCBIfam; TIGR01929; menB; 1.
DR   PANTHER; PTHR43113:SF1; 1,4-DIHYDROXY-2-NAPHTHOYL-COA SYNTHASE, PEROXISOMAL; 1.
DR   PANTHER; PTHR43113; NUCLEOSIDE-DIPHOSPHATE-SUGAR EPIMERASE; 1.
DR   Pfam; PF00378; ECH_1; 1.
DR   SUPFAM; SSF52096; ClpP/crotonase; 1.
DR   PROSITE; PS00166; ENOYL_COA_HYDRATASE; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Lyase; Menaquinone biosynthesis; Reference proteome.
FT   CHAIN           1..285
FT                   /note="1,4-dihydroxy-2-naphthoyl-CoA synthase"
FT                   /id="PRO_0000109325"
FT   BINDING         45
FT                   /ligand="substrate"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01934,
FT                   ECO:0000269|PubMed:21830810, ECO:0000269|PubMed:23658663"
FT   BINDING         84..89
FT                   /ligand="substrate"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000269|PubMed:21830810,
FT                   ECO:0000269|PubMed:23658663"
FT   BINDING         97
FT                   /ligand="substrate"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01934,
FT                   ECO:0000269|PubMed:21830810"
FT   BINDING         129..133
FT                   /ligand="substrate"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01934,
FT                   ECO:0000269|PubMed:21830810, ECO:0000269|PubMed:23658663"
FT   BINDING         154..156
FT                   /ligand="hydrogencarbonate"
FT                   /ligand_id="ChEBI:CHEBI:17544"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01934,
FT                   ECO:0000269|PubMed:22606952"
FT   BINDING         155
FT                   /ligand="substrate"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01934,
FT                   ECO:0000269|PubMed:21830810, ECO:0000269|PubMed:23658663"
FT   BINDING         161
FT                   /ligand="substrate"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01934,
FT                   ECO:0000269|PubMed:23658663"
FT   BINDING         258
FT                   /ligand="substrate"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01934,
FT                   ECO:0000269|PubMed:21830810"
FT   BINDING         273
FT                   /ligand="substrate"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01934,
FT                   ECO:0000269|PubMed:21830810, ECO:0000269|PubMed:23658663"
FT   SITE            97
FT                   /note="Important for catalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01934,
FT                   ECO:0000305|PubMed:21830810"
FT   SITE            258
FT                   /note="Important for catalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01934,
FT                   ECO:0000305|PubMed:21830810"
FT   MUTAGEN         89
FT                   /note="K->A: Strongly decreases affinity for substrate and
FT                   DHNA-CoA synthase activity."
FT                   /evidence="ECO:0000269|PubMed:23658663"
FT   MUTAGEN         91
FT                   /note="R->A: Loss of DHNA-CoA synthase activity."
FT                   /evidence="ECO:0000269|PubMed:23658663"
FT   MUTAGEN         97
FT                   /note="Y->F: Loss of DHNA-CoA synthase activity."
FT                   /evidence="ECO:0000269|PubMed:21830810"
FT   MUTAGEN         154
FT                   /note="Q->A: Reduces the specific DHNA-CoA synthase
FT                   activity by 15-fold, whereas its affinity for
FT                   hydrogencarbonate is reduced by 36-fold."
FT                   /evidence="ECO:0000269|PubMed:20643650"
FT   MUTAGEN         156
FT                   /note="G->D: Loss of DHNA-CoA synthase activity."
FT                   /evidence="ECO:0000269|PubMed:20643650,
FT                   ECO:0000269|PubMed:21830810"
FT   MUTAGEN         184
FT                   /note="W->F: Reduces the specific DHNA-CoA synthase
FT                   activity by 530-fold, whereas its affinity for
FT                   hydrogencarbonate is reduced by 20-fold."
FT                   /evidence="ECO:0000269|PubMed:20643650"
FT   MUTAGEN         267
FT                   /note="R->A: Strongly decreases affinity for substrate and
FT                   DHNA-CoA synthase activity."
FT                   /evidence="ECO:0000269|PubMed:23658663"
FT   MUTAGEN         270
FT                   /note="F->A: Strongly decreases affinity for substrate and
FT                   DHNA-CoA synthase activity."
FT                   /evidence="ECO:0000269|PubMed:23658663"
FT   MUTAGEN         273
FT                   /note="K->A: Impairs protein folding."
FT                   /evidence="ECO:0000269|PubMed:23658663"
FT   HELIX           6..9
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   STRAND          15..17
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   STRAND          23..30
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   STRAND          33..39
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           42..44
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           50..65
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   STRAND          71..83
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           88..90
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   STRAND          93..98
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   TURN            105..107
FT                   /evidence="ECO:0007829|PDB:4ELX"
FT   HELIX           108..117
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   STRAND          122..126
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   STRAND          128..131
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           133..140
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   STRAND          141..147
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   STRAND          151..153
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           156..159
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   TURN            166..168
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           169..175
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           177..186
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           192..197
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   STRAND          200..205
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           207..209
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           210..222
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           226..238
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           242..258
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           261..271
FT                   /evidence="ECO:0007829|PDB:4I42"
FT   HELIX           278..280
FT                   /evidence="ECO:0007829|PDB:3T88"
SQ   SEQUENCE   285 AA;  31633 MW;  C38E7206924408E6 CRC64;
     MIYPDEAMLY APVEWHDCSE GFEDIRYEKS TDGIAKITIN RPQVRNAFRP LTVKEMIQAL
     ADARYDDNIG VIILTGAGDK AFCSGGDQKV RGDYGGYKDD SGVHHLNVLD FQRQIRTCPK
     PVVAMVAGYS IGGGHVLHMM CDLTIAADNA IFGQTGPKVG SFDGGWGASY MARIVGQKKA
     REIWFLCRQY DAKQALDMGL VNTVVPLADL EKETVRWCRE MLQNSPMALR CLKAALNADC
     DGQAGLQELA GNATMLFYMT EEGQEGRNAF NQKRQPDFSK FKRNP
//
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