Contacts of the strand formed by residues 171 - 177 (chain G) in PDB entry 1YKN
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 171 (chain G).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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144G TYR* 3.6 12.1 - - + -
145G PHE 4.0 2.0 - - - -
146G ASP* 3.6 37.7 - - + +
152G ASN* 3.9 24.2 - - + +
158G LEU* 4.9 6.3 - - + -
167G ARG* 3.7 18.8 - - + +
168G GLU* 3.1 19.8 + - + +
169G THR 3.5 1.5 - - - +
170G LEU* 1.4 76.4 - - + +
172G ALA* 1.3 60.8 + - - +
173G LYS* 3.9 1.6 + - - +
185G PHE* 4.7 2.2 - - - -
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Residues in contact with ALA 172 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
143G LEU* 4.0 16.6 - - + -
144G TYR 2.9 17.9 + - - +
145G PHE* 4.8 0.2 - - - -
146G ASP* 3.2 26.0 + - - +
170G LEU 3.8 1.8 + - - -
171G ILE* 1.3 71.5 - - - +
173G LYS* 1.4 62.1 + - - +
174G ARG 3.6 0.5 + - - -
183G TYR* 3.8 23.8 - - + -
184G ARG 3.4 13.9 - - - +
185G PHE* 4.0 16.8 - - + -
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Residues in contact with LYS 173 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
146G ASP* 3.5 9.6 - - - +
171G ILE 3.9 2.3 + - - +
172G ALA* 1.4 68.3 - - - +
174G ARG* 1.3 65.6 + - - +
175G CYS* 3.6 3.2 + - + -
183G TYR* 3.0 2.5 - - - -
184G ARG* 2.8 45.4 + - + +
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Residues in contact with ARG 174 (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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47G GLU* 5.2 5.6 + - - -
146G ASP* 3.1 26.9 + - - +
147G ASP* 3.0 33.2 + - - +
172G ALA 3.6 1.4 + - - -
173G LYS* 1.3 75.2 - - - +
175G CYS* 1.3 68.4 + - - +
176G GLU* 5.8 6.1 + - - +
181G THR* 3.9 26.9 + - + +
182G ALA 3.4 10.1 - - - +
183G TYR* 3.5 13.8 + - + -
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Residues in contact with CYS 175 (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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52G LEU* 4.8 4.7 - - - -
173G LYS 4.2 7.9 - - - +
174G ARG* 1.3 79.8 - - - +
176G GLU* 1.3 72.5 + - - +
177G VAL* 4.6 10.1 - - - -
181G THR* 3.9 3.3 - - - +
182G ALA* 3.0 43.9 + - - +
183G TYR 4.6 0.2 - - - -
184G ARG* 4.4 17.7 - - - -
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Residues in contact with GLU 176 (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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174G ARG* 5.8 6.1 + - - +
175G CYS* 1.3 85.7 - - - +
177G VAL* 1.3 68.0 + - - +
178G ASP 4.2 0.9 - - - -
179G GLY* 5.1 11.6 - - - +
180G LYS 3.3 11.7 - - - +
181G THR* 5.0 4.3 - - - -
182G ALA 4.5 0.2 - - - +
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Residues in contact with VAL 177 (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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50G LEU* 3.9 25.5 - - + +
52G LEU* 4.7 10.1 - - + -
175G CYS* 4.6 9.2 - - - -
176G GLU* 1.3 80.5 - - - +
178G ASP* 1.4 79.4 + - - +
180G LYS* 2.9 32.1 + - - +
182G ALA* 4.2 14.5 - - + +
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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