Contacts of the helix formed by residues 318 - 324 (chain F) in PDB entry 1NZB
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with VAL 318 (chain F).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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310E MET* 5.0 1.8 - - - -
316E THR* 4.6 11.9 - - - +
318E VAL* 4.2 21.8 - - + -
306F ILE* 3.6 42.0 - - + -
310F MET* 4.7 4.3 - - + -
317F ASN* 1.3 94.5 - - - +
319F ASN* 1.3 65.4 + - - +
320F ILE 3.8 0.4 - - - -
321F VAL* 3.2 18.5 - - + +
322F MET* 3.0 34.9 + - + +
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Residues in contact with ASN 319 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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204E VAL* 4.8 8.7 + - - +
206E THR* 3.3 28.3 - - - +
316E THR* 3.2 24.0 + - - +
317F ASN* 2.5 29.4 + - - +
318F VAL* 1.3 65.6 - - - +
320F ILE* 1.3 68.2 + - + +
322F MET* 2.6 31.9 + - - +
323F ASN 2.8 8.9 + - - -
118G T 3.7 13.5 + - + +
117H A 6.0 0.9 - - - -
118H T 3.7 26.3 - - - +
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Residues in contact with ILE 320 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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315F TRP* 4.0 15.0 - - + +
317F ASN* 5.9 0.4 - - + +
318F VAL 3.8 0.2 - - - -
319F ASN* 1.3 85.2 - - + +
321F VAL* 1.3 51.4 + - - +
323F ASN* 2.9 12.7 + - + +
324F TYR* 2.8 71.8 + - + +
115G A 4.1 31.4 - - + +
116G T 3.8 40.6 - - + +
117G G 5.3 5.8 - - + +
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Residues in contact with VAL 321 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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307E PRO* 5.9 4.0 - - + -
296F ALA* 5.3 8.1 - - + +
300F ALA* 5.6 1.6 - - + -
306F ILE* 6.0 1.6 - - + -
309F ILE* 4.1 28.9 - - + -
310F MET* 5.5 3.4 - - - -
315F TRP* 4.2 29.8 - - + -
317F ASN 4.7 4.5 - - - +
318F VAL* 3.2 30.7 - - + +
319F ASN 2.8 3.2 + - - -
320F ILE* 1.3 74.6 - - + +
322F MET* 1.3 65.3 + - - +
324F TYR* 2.8 27.7 + - - +
325F ILE* 3.2 23.6 - - + +
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Residues in contact with MET 322 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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206E THR* 3.6 32.0 - - - +
207E ALA 4.8 1.7 - - - +
307E PRO* 4.1 11.7 - - - +
310E MET* 3.2 48.9 - - + +
311E GLN* 3.4 15.2 - - + +
315E TRP 3.3 17.5 - - - +
316E THR* 4.6 7.0 - - - -
318F VAL* 3.0 33.0 - - + +
319F ASN* 2.6 13.2 + - - +
321F VAL* 1.3 82.6 - - - +
323F ASN* 1.3 58.2 + - - +
325F ILE* 3.3 23.5 + - - +
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Residues in contact with ASN 323 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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204E VAL* 2.8 39.8 - - + +
205E SER 3.3 26.6 + - - +
206E THR* 4.1 3.2 - - + +
131F ALA 5.5 2.4 - - - +
132F LYS 5.7 0.2 - - - +
133F GLN* 2.9 42.8 + - - +
319F ASN 2.8 6.6 + - - +
320F ILE* 3.2 22.9 - - + +
322F MET* 1.3 78.5 - - - +
324F TYR* 1.3 59.0 + - + +
325F ILE 3.2 8.9 + - - +
115G A 4.7 10.3 + - - -
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Residues in contact with TYR 324 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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133F GLN* 3.4 30.2 - - + +
289F HIS* 3.2 22.5 - - - -
292F ARG* 4.5 2.2 - - + -
293F VAL* 3.5 45.3 - - + +
296F ALA* 3.8 20.0 - - + -
297F ARG* 3.2 30.0 + - - +
315F TRP* 4.0 13.7 - + - -
320F ILE* 2.8 38.9 + - + +
321F VAL* 2.8 11.2 + - - +
323F ASN* 1.3 80.2 - - + +
325F ILE* 1.3 58.9 + - + +
115G A 3.2 28.8 + - - -
116G T 3.8 5.0 + - - -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il