PDB entry 1nqh

View 1nqh on RCSB PDB site
Description: outer membrane cobalamin transporter (btub) from e. coli, with bound calcium and cyanocobalamin (vitamin b12) substrate
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: 3.1 Å
R-factor: 0.226
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: d1nqha_
  • Heterogens: CA, CNC, C8E

PDB Chain Sequences:

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

    Sequence, based on observed residues (ATOM records): (download)
    >1nqhA (A:)
    dtlvvtanrfeqprstvlapttvvtrqdidrwqstsvndvlrrlpgvditqnggsgqlss
    ifirgtnashvlvlidgvrlnlagvsgsadlsqfpialvqrveyirgprsavygsdaigg
    vvniittrdepgteisagwgsnsyqnydvstqqqlgdktrvtllgdyahthgydvvaygn
    tgtqaqtdndgflsktlygalehnftdawsgfvrgygydnrtnydayyspgsplldtrkl
    ysqswdaglryngeliksqlitsyshskdynydphygrydssatldemkqytvqwannvi
    vghgsigagvdwqkqtttpedgydqrntgiyltglqqvgdftfegaarsddnsqfgrhgt
    wqtsagwefiegyrfiasygtsykapnlgqlygfygnpnldpekskqwegafegltagvn
    wrisgyrndvsdlidyddhtlkyynegkarikgveatanfdtgplthtvsydyvdarnai
    tdtpllrrakqqvkyqldwqlydfdwgityqylgtrydkdyssypyqtvkmggvslwdla
    vaypvtshltvrgkianlfdkdyetvygyqtagreytlsgsytf