SeMet derivative of Streptomyces antibioticus PNPase/GPSI enzyme

A Duplicated Fold is the Structural Basis for Polynucleotide Phosphorylase Catalytic Activity, Processivity, and Regulation

BIFUNCTIONAL ENZYME POLYRIBONUCLEOTIDE NUCLEOTIDYL TRANSFERASE, ATP\:GTP DIPHOSPHOTRANSFERASE

POLYNUCLEOTIDE PHOSPHORYLASE, GUANOSINE PENTAPHOSPHATE SYNTHETASE

AS(MSE)TGGQQ(MSE)GRGSGSEF(MSE)ENETHYAEAVIDNGAFGTRTIRFETGRLARQAAGSAVAYLDDDT(MSE)V
LSATTASKNPKDQLDFFPLTVDVEER(MSE)YAAGKIPGSFFRREGRPSEDAILTCRLIDRPLRPSFKKGLRNEIQVVAT
I(MSE)ALNPDHLYDVVAINAASASTQLAGLPFSGPIGGVRVALIRGQWVAFPTHTELEDAVFD(MSE)VVAGRVLEDGD
VAI(MSE)(MSE)VEAEATEKTIQLVKDGAEAPTEEVVAAGLDAAKPFIKVLCKAQADLAAKAAKPTGEFPVFLDYQDDV
LEALSAAVRPELSAALTIAGKQDREAELDRVKALAAEKLLPEFEGREKEISAAYRALTKSLVRERVIAEKKRIDGRGVTD
IRTLAAEVEAIPRVHGSALFERGETQILGVTTLN(MSE)LR(MSE)EQQLDTLSPVTRKRY(MSE)HNYNFPPYSVGETG
RVGSPKRREIGHGALAERAIVPVLPTREEFPYAIRQVSEALGSNGSTS(MSE)GSVCAST(MSE)SLLNAGVPLKAPVAG
IA(MSE)GLISQEINGETHYVALTDILGAEDAFGD(MSE)DFKVAGTKEFVTALQLDTKLDGIPASVLAAALKQARDARL
HILDV(MSE)(MSE)EAIDTPDE(MSE)SPNAPRIITVKIPVDKIGEVIGPKRQ(MSE)INQIQEDTGAEITIEDDGTIY
IGAADGPAAEAARATINGIANPTSPEVGERILGSVVKTTTFGAFVSLLPGKDGLLHISQIRKLAGGKRVENVEDVLGVGQ
KVQVEIAEIDSRGKLSLIPVIEGEEAASDEKKDDAEQ

ASMTGGQQMGRGSGSEFMENETHYAEAVIDNGAFGTRTIRFETGRLARQAAGSAVAYLDDDTMVLSATTASKNPKDQLDF
FPLTVDVEERMYAAGKIPGSFFRREGRPSEDAILTCRLIDRPLRPSFKKGLRNEIQVVATIMALNPDHLYDVVAINAASA
STQLAGLPFSGPIGGVRVALIRGQWVAFPTHTELEDAVFDMVVAGRVLEDGDVAIMMVEAEATEKTIQLVKDGAEAPTEE
VVAAGLDAAKPFIKVLCKAQADLAAKAAKPTGEFPVFLDYQDDVLEALSAAVRPELSAALTIAGKQDREAELDRVKALAA
EKLLPEFEGREKEISAAYRALTKSLVRERVIAEKKRIDGRGVTDIRTLAAEVEAIPRVHGSALFERGETQILGVTTLNML
RMEQQLDTLSPVTRKRYMHNYNFPPYSVGETGRVGSPKRREIGHGALAERAIVPVLPTREEFPYAIRQVSEALGSNGSTS
MGSVCASTMSLLNAGVPLKAPVAGIAMGLISQEINGETHYVALTDILGAEDAFGDMDFKVAGTKEFVTALQLDTKLDGIP
ASVLAAALKQARDARLHILDVMMEAIDTPDEMSPNAPRIITVKIPVDKIGEVIGPKRQMINQIQEDTGAEITIEDDGTIY
IGAADGPAAEAARATINGIANPTSPEVGERILGSVVKTTTFGAFVSLLPGKDGLLHISQIRKLAGGKRVENVEDVLGVGQ
KVQVEIAEIDSRGKLSLIPVIEGEEAASDEKKDDAEQ

DATA STATISTICS ARE FOR LOW ENERGY REMOTE DATASET. INITIAL SE SUBSTRUCTURE MODEL FROM SHELX-90 SEARCH OF REVISE PATTERSON MAP.

1.8M (NH4)2SO4, 100MM TRISHCL PH8.5, 100MM BISTRISHCL PH6.5, 60MM NACL, 4MM MGCL2, 5MM DTT., pH 7.00

TUNGSTATE DERIVATIVE OF STREPTOMYCES ANTIBIOTICUS PNPASE/GPSI ENZYM

THIS IS A BIFUNCTIONAL ENZYME
EC:2.7.7.8- POLYRIBONUCLEOTIDE NUCLEOTIDYLTRANSFERASE
EC:2.7.6.5- ATP:GTP 3'-PYROPHOSPHOTRANSFERASE

ARG A 31, SEQUENCING AMBIGUITY
ILE A 156, SEQUENCING AMBIGUITY
ILE A 210, SEQUENCING AMBIGUITY
PHE A 260, SEQUENCING AMBIGUITY
LEU A 261, SEQUENCING AMBIGUITY
ASP A 262, SEQUENCING AMBIGUITY
TYR A 263, SEQUENCING AMBIGUITY
GLN A 264, SEQUENCING AMBIGUITY
ASP A 265, SEQUENCING AMBIGUITY
VAL A 267, SEQUENCING AMBIGUITY
LEU A 268, SEQUENCING AMBIGUITY
GLU A 269, SEQUENCING AMBIGUITY
ALA A 323, SEQUENCING AMBIGUITY
LEU A 324, SEQUENCING AMBIGUITY
THR A 325, SEQUENCING AMBIGUITY
LYS A 326, SEQUENCING AMBIGUITY
LEU A 328, SEQUENCING AMBIGUITY
VAL A 329, SEQUENCING AMBIGUITY
ARG A 330, SEQUENCING AMBIGUITY
ALA A 335, SEQUENCING AMBIGUITY
TYR A 409, SEQUENCING AMBIGUITY

REFINEMENT TARGET (MLHL) INCLUDED WEIGHTED EXPERIMENTAL PHASE DISTRIBUTION ESTIMATES FROM SHARP POOR DENSITY FOR RESIDUES 605 - 614 AND 623 - 632 WAS INTERPRETED FROM MODEL OF HOMOLOGOUS DOMAIN PDB 1VIH POSITIONED BY HAND IN DENSITY. MODEL HERE IS POLYALA (EXCEPT GLY AND PRO WHERE EXPECTED FROM SEQUENCE) WITH B-FACTOR SET TO 100.00 AND SUBJECT TO POSITIONAL REFINEMENT ONLY. THE C- TERMINAL RESIDUE WAS NOT SEEN IN DENSITY MAPS

POLYRIBONUCLEOTIDE TRANSFERASE, ATP:GTP DIPHOSPHOTRANSFERASE, RNA PROCESSING, RNA DEGRADATION