Contacts of the strand formed by residues 85 - 90 (chain N) in PDB entry 1PP9
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 HIS 85 (chain N).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
79N VAL* 4.3 0.4 - - - -
83N GLY 3.8 5.0 + - - -
84N ALA* 1.3 79.2 - - - +
86N LEU* 1.3 61.1 + - - +
87N ASN* 4.1 1.7 + - + -
98N TYR* 3.8 0.9 - - - +
99N ILE* 3.0 8.2 - - - +
100N LYS* 2.7 56.7 + - + +
283O PRO 3.6 25.1 + - - -
284O HIS* 3.2 29.1 + + - +
367O GLY* 5.5 6.3 - - - -
370O MET* 3.7 27.3 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 86 (chain N).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
64N PHE* 3.5 49.2 - - + -
75N LEU* 4.2 7.9 - - + -
76N GLU* 6.2 0.4 - - - -
79N VAL* 4.0 25.3 - - + +
85N HIS* 1.3 72.8 - - - +
87N ASN* 1.3 60.9 + - - +
98N TYR 3.5 10.3 - - - +
99N ILE* 3.3 27.6 - - + -
113N LEU* 4.6 3.6 - - + -
116N ILE* 3.9 16.4 - - + -
284O HIS 2.8 9.2 + - - +
285O VAL* 3.5 18.9 - - + -
286O LYS* 3.0 25.3 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ASN 87 (chain N).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
64N PHE* 3.5 8.8 - - - -
85N HIS* 4.1 2.2 - - + -
86N LEU* 1.3 74.6 - - - +
88N ALA* 1.3 77.4 + - - +
89N TYR* 6.1 0.4 - - - -
97N TYR* 3.4 1.9 - - - -
98N TYR* 2.8 71.6 + - + +
286O LYS* 3.3 27.4 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 88 (chain N).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
60N GLU* 4.0 14.6 - - + +
64N PHE* 3.7 11.0 - - + -
87N ASN* 1.3 87.2 + - - +
89N TYR* 1.3 62.4 + - - +
96N ALA 3.1 15.3 - - - +
97N TYR* 3.5 24.7 - - + -
98N TYR* 4.7 2.7 - - - -
286O LYS* 2.6 33.0 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 89 (chain N).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
40N TRP* 2.8 29.0 + + - -
60N GLU* 3.6 5.8 - - - -
87N ASN* 6.1 0.4 - - - -
88N ALA* 1.3 76.5 - - - +
90N SER* 1.3 64.8 + - - +
91N THR* 4.2 21.3 - - + -
94N HIS* 4.6 10.3 - - + +
95N THR* 3.4 5.1 - - - +
96N ALA* 3.0 46.7 + - + +
98N TYR* 4.3 23.3 - + - -
377N GLU* 2.7 33.3 + - + +
381N ARG* 4.9 6.1 + - - +
286O LYS* 4.3 3.6 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with SER 90 (chain N).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
44N GLY* 6.1 0.4 - - - -
56N GLY* 4.3 7.6 + - - -
57N TYR* 4.5 8.7 - - - -
60N GLU* 2.5 34.7 + - - +
89N TYR* 1.3 75.4 + - - +
91N THR* 1.3 66.1 + - - +
94N HIS 3.5 5.2 - - - -
95N THR* 4.3 15.4 - - - +
167N VAL* 3.6 29.4 - - - +
----------------------------------------------------------
Back to top of page
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
------------------------------------------------------------
Atomic class I II III IV V VI VII VIII
------------------------------------------------------------
I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
------------------------------------------------------------
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