Contacts of the strand formed by residues 53 - 56 (chain C) in PDB entry 1G3I
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 ILE 53 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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26C ALA* 4.2 5.2 - - + +
27C VAL* 3.7 31.9 - - + +
30C ALA* 3.9 22.2 - - + -
51C LYS 4.1 0.7 - - - +
52C ASN* 1.3 78.8 - - - +
54C LEU* 1.3 66.3 + - - +
55C MET* 4.0 9.9 - - + -
304C LEU* 4.6 4.7 - - + -
305C PHE 3.1 7.4 + - - +
306C ILE* 3.4 19.1 - - + -
307C ALA* 2.9 25.5 + - - +
327C LEU* 4.5 5.2 - - - +
329C ILE* 3.4 30.3 - - + +
331C VAL* 3.5 29.4 - - + -
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Residues in contact with LEU 54 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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53C ILE* 1.3 75.6 - - - +
55C MET* 1.3 64.1 + - - +
56C ILE* 3.1 25.7 - - + +
259C ILE* 4.2 7.2 - - + -
307C ALA* 3.0 32.1 - - + +
308C SER 4.2 0.2 - - - +
311C PHE* 4.1 17.3 - - + -
316C PRO* 3.5 32.8 - - + -
319C LEU* 4.6 8.7 - - + -
327C LEU* 4.2 15.7 - - + -
329C ILE 2.8 9.5 + - - +
330C ARG* 3.5 23.3 - - - +
331C VAL 3.2 16.5 + - - -
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Residues in contact with MET 55 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
23C ALA* 4.7 9.4 - - + +
27C VAL* 4.3 20.2 - - + -
53C ILE* 4.1 5.4 - - + -
54C LEU* 1.3 69.8 - - - +
56C ILE* 1.3 64.8 + - - +
63C LYS* 3.7 44.4 - - + +
66C ILE* 4.7 4.7 - - + -
67C ALA* 4.3 7.6 - - + +
255C PHE* 4.3 3.6 - - + -
306C ILE* 3.1 32.8 - - + -
307C ALA 2.8 11.1 + - - +
308C SER* 3.4 4.2 - - - -
309C GLY 3.2 23.7 + - - +
331C VAL* 3.5 19.7 - - + -
333C LEU* 3.5 21.1 - - + -
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Residues in contact with ILE 56 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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54C LEU* 3.1 42.4 - - + +
55C MET* 1.3 75.8 - - - +
57C GLY* 1.3 63.3 + - - +
63C LYS* 3.9 1.6 - - - -
309C GLY 3.2 4.5 - - - +
310C ALA 3.7 18.4 - - - +
311C PHE* 4.0 19.1 - - + -
316C PRO* 4.0 14.6 - - + -
330C ARG* 4.7 6.7 - - + -
331C VAL 3.0 13.4 + - - +
332C GLU* 3.6 16.3 - - + +
333C LEU* 2.9 26.9 + - - +
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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