Contacts of the strand formed by residues 125 - 129 (chain K) in PDB entry 1I9R
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 SER 125 (chain K).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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122K LYS* 4.7 6.8 + - - -
124K PRO* 1.3 76.0 + - - +
126K VAL* 1.3 60.8 + - - +
127K PHE* 3.4 28.6 - - - -
146K LEU 3.8 0.4 - - - -
147K VAL* 3.0 5.9 - - - -
148K LYS* 2.5 40.2 + - - -
149K ASP* 5.0 5.8 + - - +
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Residues in contact with VAL 126 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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124K PRO* 4.9 0.7 - - + -
125K SER* 1.3 79.7 - - - +
127K PHE* 1.3 77.3 + - - +
128K PRO* 4.6 0.7 - - - +
145K CYS* 5.2 3.1 - - + -
146K LEU 3.0 5.2 - - - +
147K VAL* 4.5 4.0 - - + -
201K CYS* 5.4 2.5 - - - -
203K VAL* 3.9 39.5 - - + -
212K VAL* 3.5 34.5 - - + -
214K LYS* 4.0 20.9 - - + +
127M GLU* 4.2 12.8 - - - +
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Residues in contact with PHE 127 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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125K SER* 3.4 35.7 - - - -
126K VAL* 1.3 85.6 - - - +
128K PRO* 1.3 72.1 - - - +
145K CYS* 3.5 2.6 - - - +
146K LEU* 2.8 58.4 + - + +
148K LYS* 4.0 13.2 - - + -
214K LYS* 4.5 2.2 - - - -
125M SER* 2.9 21.3 - - - +
127M GLU* 4.1 16.6 - - + -
128M GLN* 3.1 52.7 - - + +
131M SER* 4.5 8.7 - - - -
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Residues in contact with PRO 128 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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127K PHE* 1.3 87.6 - - + +
129K LEU* 1.3 62.5 + - - +
130K ALA* 3.3 11.2 + - + +
144K GLY 3.8 3.8 - - - +
145K CYS* 4.8 1.3 - - - -
214K LYS* 3.6 42.8 - - + +
216K VAL* 3.9 18.2 - - + -
217K GLU 5.0 1.8 - - - +
219K LYS* 5.0 13.7 - - - +
123M PRO 5.3 1.9 - - - +
125M SER* 3.7 27.5 + - - -
127M GLU* 4.4 9.0 - - + +
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Residues in contact with LEU 129 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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127K PHE* 4.1 1.8 - - + +
128K PRO* 1.3 71.9 - - - +
130K ALA* 1.3 55.5 + - - +
143K LEU* 3.3 2.8 - - - +
144K GLY 2.5 46.8 + - - +
145K CYS 3.5 8.5 - - - +
146K LEU* 3.6 24.2 - - + -
184K SER* 3.3 22.2 - - - +
186K VAL* 3.6 21.1 - - + -
216K VAL* 4.0 1.3 - - - +
122M PHE* 2.8 46.1 - - + -
123M PRO 5.8 1.3 - - - -
125M SER* 5.8 0.9 - - - +
137M VAL* 4.2 24.2 - - + -
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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