PDB entry 1nqg

View 1nqg on RCSB PDB site
Description: outer membrane cobalamin transporter (btub) from e. coli, with bound calcium
Class: transport protein
Keywords: Beta barrel, cobalamin, VITAMIN B12, membrane transport, calcium binding, TRANSPORT PROTEIN
Deposited on 2003-01-21, released 2003-04-29
The last revision prior to the SCOPe 2.08 freeze date was dated 2011-07-13, with a file datestamp of 2011-05-08.
Experiment type: XRAY
Resolution: 3.31 Å
R-factor: 0.236
AEROSPACI score: 0.17 (click here for full SPACI score report)

Chains and heterogens:

  • Chain 'A':
    Compound: Vitamin B12 receptor
    Species: Escherichia coli [TaxId:562]
    Gene: btuB
    Database cross-references and differences (RAF-indexed): Domains in SCOPe 2.08: d1nqga_
  • Heterogens: CA, C8E

PDB Chain Sequences:

  • Chain 'A':
    Sequence, based on SEQRES records: (download) 
    >1nqgA (A:)
qdtspdtlvvtanrfeqprstvlapttvvtrqdidrwqstsvndvlrrlpgvditqnggs
gqlssifirgtnashvlvlidgvrlnlagvsgsadlsqfpialvqrveyirgprsavygs
daiggvvniittrdepgteisagwgsnsyqnydvstqqqlgdktrvtllgdyahthgydv
vaygntgtqaqtdndgflsktlygalehnftdawsgfvrgygydnrtnydayyspgspll
dtrklysqswdaglryngeliksqlitsyshskdynydphygrydssatldemkqytvqw
annvivghgsigagvdwqkqtttpgtgyvedgydqrntgiyltglqqvgdftfegaarsd
dnsqfgrhgtwqtsagwefiegyrfiasygtsykapnlgqlygfygnpnldpekskqweg
afegltagvnwrisgyrndvsdlidyddhtlkyynegkarikgveatanfdtgplthtvs
ydyvdarnaitdtpllrrakqqvkyqldwqlydfdwgityqylgtrydkdyssypyqtvk
mggvslwdlavaypvtshltvrgkianlfdkdyetvygyqtagreytlsgsytf

    Sequence, based on observed residues (ATOM records): (download) 
    >1nqgA (A:)
dtlvvtanrfeqprstvlapttvvtrqdidrwqstsvndvlrrlpgvditqnggsgqlss
ifirgtnashvlvlidgvrlnlagvsgsadlsqfpialvqrveyirgprsavygsdaigg
vvniittrdepgteisagwgsnsyqnydvstqqqlgdktrvtllgdyahthgydvvaygn
tgtqaqtdndgflsktlygalehnftdawsgfvrgygydnrtnydadtrklysqswdagl
ryngeliksqlitsyshskdynydphdssatldemkqytvqwannvivghgsigagvdwq
kqtttpgtgyvedgydqrntgiyltglqqvgdftfegaarsddnsqfgrhgtwqtsagwe
fiegyrfiasygtsykapnlgqlygfygnpnldpekskqwegafegltagvnwrisgyrn
dvsdlidyddhtlkyynegkarikgveatanfdtgplthtvsydyvdarnaitdtpllrr
akqqvkyqldwqlydfdwgityqylgtrydkdyssypyqtvkmggvslwdlavaypvtsh
ltvrgkianlfdkdyetvygyqtagreytlsgsytf