Contacts of the strand formed by residues 271 - 274 (chain G) in PDB entry 1G9N
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 271 (chain G).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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231G LYS 4.1 9.0 - - - +
232G LYS* 3.4 43.5 - - + +
233G PHE 4.7 5.6 - - - +
234G ASN* 6.0 0.2 - - - -
266G ALA* 4.5 5.8 - - + -
269G GLU 3.2 17.0 + - - +
270G ILE* 1.3 73.3 - - - +
272G ILE* 1.3 70.4 + - - +
273G ARG* 3.7 33.8 + - + +
285G ILE 4.0 0.3 - - - +
286G VAL 3.6 0.3 - - - -
287G GLN* 2.7 45.7 + - + +
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Residues in contact with ILE 272 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
232G LYS* 4.9 5.0 + - - +
270G ILE* 4.3 2.7 + - + -
271G VAL* 1.3 85.7 - - - +
273G ARG* 1.3 62.8 + - - +
277G PHE* 3.2 34.3 - - + -
284G ILE* 4.2 8.5 - - + -
285G ILE 3.4 7.2 - - - +
286G VAL* 4.1 25.1 - - + -
345G ILE* 5.5 2.0 - - + +
348G LYS* 3.6 41.7 - - + +
349G LEU* 4.0 24.9 - - + -
352G GLN* 4.3 9.0 - - + -
353G PHE* 5.0 0.2 - - + -
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Residues in contact with ARG 273 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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95G MET* 3.0 19.8 - - + +
96G TRP* 3.5 19.4 - - + -
232G LYS* 5.5 0.4 - - - +
233G PHE 2.6 35.2 + - - +
234G ASN* 3.8 9.9 - - - +
271G VAL* 3.7 23.4 - - + +
272G ILE* 1.3 77.8 - - - +
274G SER* 1.3 65.3 + - - +
277G PHE* 3.6 2.0 - - - -
284G ILE* 3.6 2.8 - - - +
285G ILE* 2.9 47.6 + - + +
287G GLN* 2.7 35.3 + - - +
481G SER* 6.1 2.7 - - - +
484G TYR* 3.0 42.9 + - - -
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Residues in contact with SER 274 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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96G TRP* 3.1 17.9 + - - -
234G ASN 5.5 0.4 + - - -
236G THR* 5.0 6.6 - - - +
273G ARG* 1.3 76.7 - - - +
275G GLU* 1.3 63.9 + - - +
276G ASN* 2.9 9.8 + - - -
277G PHE* 3.2 55.5 + - - -
282G LYS* 4.2 7.1 + - - +
283G THR 3.7 13.4 + - - -
284G ILE* 4.2 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